Merge pull request #1 from thehanslevi/codex/readme-occurred-typo

Fix README typo
2026-06-21 11:26:30 +03:00 · 2026-06-19 08:32:08 +03:00 · 2026-06-18 21:16:03 -04:00 · 2026-06-08 17:09:05 +03:00 · 2026-06-04 18:24:26 +03:00 · 2026-06-02 18:31:17 +03:00
16 changed files with 1117 additions and 1446 deletions
--- a/Dummy_cameras/dummyfunc.c
+++ b/Dummy_cameras/dummyfunc.c
@@ -49,7 +49,7 @@ static int campoll(cc_capture_status *st, float *remain){
    if(capstat != CAPTURE_PROCESS){
        if(st) *st = capstat;
        if(remain) *remain = 0.;
-        return TRUE;
+        return FALSE;
    }
    if(sl_dtime() - texpstart > exptime){
        if(st) *st = CAPTURE_READY;
--- a/Readme.md
+++ b/Readme.md
@@ -187,7 +187,7 @@ clients connected.
 When you send a command to server you will receive:

 - one of answers - "OK" (all OK), "BUSY" (can't run setter because camera is busy), "FAIL" (some error
-occured), "BADKEY" (wrong key name) or "BADVAL" (wrong key's value) - for procedures and setters
+occurred), "BADKEY" (wrong key name) or "BADVAL" (wrong key's value) - for procedures and setters
 (instead of "OK" you will give "parameter=value" for setter if all OK);
 - "parameter=value" for getters.

--- a/ccdcapture.c
+++ b/ccdcapture.c
@@ -24,6 +24,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <sys/ioctl.h>
+#include <sys/stat.h>
 #include <sys/un.h>  // unix socket
 #include <unistd.h>
 #include <usefull_macros.h>
@@ -43,6 +44,82 @@ double __t0 = 0.;
 static int ntries = 2;  // amount of tries to send messages controlling the answer
 double answer_timeout = 0.1; // timeout of waiting answer from server (not static for client.c)

+static sem_t *sem = SEM_FAILED;
+
+// client-side SHM lock
+int cc_lock_shm(int isserver){
+    if(sem == SEM_FAILED){
+        DBG("Can't lock NULL");
+        return FALSE;
+    }
+    struct timespec ts = {.tv_sec = 0, .tv_nsec = 10000000};
+    DBG("Try to lock");
+    if(isserver){
+        int locked = TRUE;
+        while(sem_timedwait(sem, &ts) && locked){
+            switch(errno){
+            case EINTR:
+                DBG("Interrupt -> try to lock again");
+                break;
+            default: // timeout or other error -> force locking
+                DBG("Error locking -> force unlock");
+                locked = FALSE;
+            }
+        }
+        if(locked){
+            double t0 = sl_dtime();
+            while(sem_trywait(sem) && sl_dtime() - t0 < 0.1) sem_post(sem); // force locking
+        }
+    }else{
+        if(sem_timedwait(sem, &ts)){
+            DBG("Image semaphore is locked too long by other side");
+            return FALSE; // can't lock
+        }
+    }
+    DBG("Semaphore locked");
+    return TRUE;
+}
+
+void cc_unlock_shm(){
+    if(sem == SEM_FAILED){
+        DBG("Can't unlock NULL");
+        return;
+    }
+    if(sem_post(sem)){
+        switch(errno){
+        case EOVERFLOW: // already unlocked
+            break;
+        default: // not a valid? or other?
+            WARN("Can't unlock image semaphore");
+            LOGERR("Can't unlock image semaphore");
+            return;
+        }
+    }
+    DBG("Semaphore unlocked");
+}
+
+void cc_init_sem(int isserver){
+    if(sem != SEM_FAILED) return;
+    umask(0); // for read-write semaphore
+    // create samaphore if no
+    if(isserver){
+        sem = sem_open(SEM_NAME, O_CREAT, 0666, 1);
+    }else{
+        sem = sem_open(SEM_NAME, 0);
+    }
+    if(sem == SEM_FAILED){
+        LOGERR("sem_open failed: %s", strerror(errno));
+    }
+}
+
+void cc_remove_sem(){
+    if(sem == SEM_FAILED) return;
+    sem_close(sem);
+    DBG("semaphore closed\n");
+    if(-1 == sem_unlink(SEM_NAME))
+        LOGERR("Can't delete semaphore");
+}
+
 /**
 * @brief cc_open_socket - create socket and open it
 * @param isserver  - TRUE for server, FALSE for client
@@ -134,15 +211,19 @@ int cc_senddata(int fd, void *data, size_t l){
    DBG("fd=%d, l=%zd", fd, l);
    if(fd < 1 || !data || l < 1) return TRUE; // empty message
    DBG("send new data (size=%zd) to fd %d", l, fd);
-//strncpy((char*)data, "TEST image data\n", 17);
-//l = 16;
-    if(l != (size_t)send(fd, data, l, MSG_NOSIGNAL)){
-        WARN("write()");
-        LOGWARN("write()");
-        return FALSE;
+    size_t total = 0;
+    while(total < l){
+        ssize_t sent = send(fd, (char*)data + total, l - total, MSG_NOSIGNAL);
+        if(sent <= 0){
+            WARN("send()");
+            LOGWARN("send()");
+            break; // error
+        }
+        total += sent;
    }
+    if(total != l) return FALSE;
    DBG("success");
-    if(sl_globlog)  LOGDBG("SEND data (size=%d) to fd %d", l, fd);
+    LOGDBG("SEND data (size=%d) to fd %d", l, fd);
    return TRUE;
 }

@@ -155,25 +236,36 @@ int cc_sendmessage(int fd, const char *msg, int l){
    static int buflen = 0;
    if(l + 1 > buflen){
        buflen = 1024 * (1 + l/1024);
-        tmpbuf = realloc(tmpbuf, buflen);
+        char *newbuf = realloc(tmpbuf, buflen);
+        if(!newbuf){
+            LOGERR("realloc())");
+            return FALSE;
+        }
+        tmpbuf = newbuf;
    }
    DBG("send to fd %d:\n%s[%d]", fd, msg, l);
    memcpy(tmpbuf, msg, l);
    if(msg[l-1] != '\n') tmpbuf[l++] = '\n';
-    if(l != send(fd, tmpbuf, l, MSG_NOSIGNAL)){
-        WARN("write()");
-        LOGWARN("write()");
-        pthread_mutex_unlock(&mutex);
-        return FALSE;
-    }else{
-        //DBG("success");
+    int total = 0;
+    while(total < l){
+        ssize_t sent = send(fd, tmpbuf + total, l - total, MSG_NOSIGNAL);
+        if(sent <= 0){
+            WARN("send()");
+            LOGWARN("send()");
+            break; // error
+        }
+        total += sent;
+    }
+    int ret = FALSE;
+    if(total == l){
+        ret = TRUE;
        if(sl_globlog){ // logging turned ON
            tmpbuf[l-1] = 0; // remove trailing '\n' for logging
            LOGDBG("SEND '%s'", tmpbuf);
        }
    }
    pthread_mutex_unlock(&mutex);
-    return TRUE;
+    return ret;
 }
 int cc_sendstrmessage(int fd, const char *msg){
    if(fd < 1 || !msg) return TRUE; // empty message
@@ -230,36 +322,6 @@ char *cc_get_keyval(char **keyval){
    return val;
 }

-/**
- * check data from  fd (polling function for client)
- * @param fd - file descriptor
- * @return 0 in case of timeout, 1 in case of fd have data, -1 if error
- */
-int cc_canberead(int fd){
-    fd_set fds;
-    struct timeval timeout;
-    timeout.tv_sec = 0;
-    timeout.tv_usec = 100;
-    FD_ZERO(&fds);
-    FD_SET(fd, &fds);
-    do{
-        int rc = select(fd+1, &fds, NULL, NULL, &timeout);
-        if(rc < 0){
-            if(errno != EINTR){
-                LOGWARN("select()");
-                WARN("select()");
-                return -1;
-            }
-            continue;
-        }
-        break;
-    }while(1);
-    if(FD_ISSET(fd, &fds)){
-        return 1;
-    }
-    return 0;
-}
-
 /**
 * @brief cc_getshm - get shared memory segment for image
 * @param imsize - size of image data (in bytes): if !=0 allocate as server, else - as client (readonly)
@@ -268,7 +330,7 @@ int cc_canberead(int fd){
 cc_IMG *cc_getshm(key_t key, size_t imsize){
    size_t shmsize = sizeof(cc_IMG) + imsize;
    shmsize = 1024 * (1 + shmsize / 1024);
-    DBG("Allocate %zd bytes in shared memory", shmsize);
+    DBG("Shared memory; sizeof(cc_IMG)=%zd, imsize=%zd", sizeof(cc_IMG), imsize);
    int shmid = -1;
    int flags = (imsize) ? IPC_CREAT | 0666 : 0;
    shmid = shmget(key, 0, flags);
@@ -287,9 +349,15 @@ cc_IMG *cc_getshm(key_t key, size_t imsize){
            WARN("Can't create shared memory segment %d", key);
            return NULL;
        }
+    }else{
+#ifdef EBUG
+        struct shmid_ds buf;
+        if(shmctl(shmid, IPC_STAT, &buf)) WARNX("Can't get SHM data");
+        else DBG("SHM size = %zd", buf.shm_segsz);
+#endif
    }
    flags = (imsize) ? 0 : SHM_RDONLY; // client opens memory in readonly mode
-    cc_IMG *ptr = shmat(shmid, NULL, flags);
+    cc_IMG *ptr = shmat(shmid, NULL, 0);
    if(ptr == (void*)-1){
        if(imsize) WARN("Can't attach SHM segment %d", key);
        return NULL;
@@ -453,8 +521,17 @@ int cc_read2buf(int fd, cc_strbuff *buf){
    pthread_mutex_lock(&buf->mutex);
    if(!buf->buf || buf->buflen >= buf->bufsize) goto ret;
    size_t maxlen = buf->bufsize - buf->buflen;
-    ssize_t rd = read(fd, buf->buf + buf->buflen, maxlen);
-    if(rd <= 0) goto ret;
+    ssize_t rd;
+    do{
+        rd = read(fd, buf->buf + buf->buflen, maxlen);
+        if(rd <= 0){
+            if(errno == EINTR){
+                DBG("errno=%d, '%s'", errno, strerror(errno));
+                continue;
+            }
+            goto ret; // EAGAIN or other error -> client disconnected
+        }else break;
+    }while(1);
    DBG("got %zd bytes", rd);
    if(rd) buf->buflen += rd;
    ret = TRUE;
@@ -470,7 +547,7 @@ ret:
 * @return TRUE if got data
 */
 int cc_refreshbuf(int fd, cc_strbuff *buf){
-    if(!cc_canberead(fd)) return FALSE;
+    if(!sl_canread(fd)) return FALSE;
    return cc_read2buf(fd, buf);
 }

@@ -548,7 +625,7 @@ static cc_hresult ask4cmd(int fd, cc_strbuff *buf, const char *cmdwargs){
        if(!cc_sendstrmessage(fd, cmdwargs)) continue;
        double t0 = sl_dtime();
        while(sl_dtime() - t0 < answer_timeout){
-            int r = cc_canberead(fd);
+            int r = sl_canread(fd);
            if(r == 0) continue;
            else if(r < 0){
                LOGERR("Socket disconnected");
@@ -651,54 +728,60 @@ cc_hresult cc_getfloat(int fd, cc_strbuff *cbuf, const char *cmd, float *val){


 // get next record from external buffer, newlines==1 if every record ends with '\n'
-char *cc_nextkw(char *buf, char record[FLEN_CARD+1], int newlines){
+char *cc_nextkw(char *buf, char record[FLEN_CARD], int newlines){
    char *nextline = NULL;
-    int l = FLEN_CARD - 1;
+    int l = FLEN_CARD;
    if(newlines){
        char *e = strchr(buf, '\n');
        if(e){
-            if(e - buf < FLEN_CARD) l = e - buf;
+            if(e - buf < FLEN_CARD) l = e - buf + 1;
            nextline = e + 1;
        }
    }else nextline = buf + (FLEN_CARD - 1);
    strncpy(record, buf, l);
-    record[l] = 0;
+    if(l < FLEN_CARD) record[l] = 0;
    return nextline;
 }

 /**
 * @brief cc_kwfromfile - add records from file
- * @param b - buffer to add
+ * @param img - buffer to add
 * @param filename - file name with FITS headers ('\n'-terminated or by 80 chars)
 * @return amount of bytes added
 */
-size_t cc_kwfromfile(cc_charbuff *b, char *filename){
-    if(!b) return 0;
+size_t cc_kwfromfile(cc_IMG *img, char *filename){
+    if(!img) return 0;
    sl_mmapbuf_t *buf = sl_mmap(filename);
    if(!buf || buf->len < 1){
        WARNX("Can't add FITS records from file %s", filename);
        LOGWARN("Can't add FITS records from file %s", filename);
        return 0;
    }
-    size_t blen0 = b->buflen;
-    char rec[FLEN_CARD+1], card[FLEN_CARD+1];
+    char rec[FLEN_CARD], card[FLEN_CARD];
    char *data = buf->data, *x = strchr(data, '\n'), *eodata = buf->data + buf->len;
    int newlines = 0;
    if(x && (x - data) < FLEN_CARD){ // we found newline -> this is a format with newlines
        newlines = 1;
    }
+    size_t written = 0;
    do{
        data = cc_nextkw(data, rec, newlines);
        if(data > eodata) break;
        int status = 0, kt = 0;
        fits_parse_template(rec, card, &kt, &status);
        if(status) fits_report_error(stderr, status);
-        else cc_charbufaddline(b, card);
+        else{
+            if(img->headerstrings < FITS_HEADER_STRINGS_MAX){
+                ++written;
+                snprintf(img->fitsheader[img->headerstrings++], FLEN_CARD, "%s", card);
+            }else break;
+        }
    }while(data && *data);
    sl_munmap(buf);
-    return b->buflen - blen0;
+    return written;
 }

+#if 0
 /**
 * @brief cc_charbuf2kw - write all keywords from `b` to file `f`
 * `b` should be prepared by cc_kwfromfile or similar
@@ -734,6 +817,7 @@ int cc_charbuf2kw(cc_charbuff *b, fitsfile *f){
    }
    return TRUE;
 }
+#endif

 static size_t print_val(cc_partype_t t, void *val, char *buf, size_t bufl){
    size_t l = 0;
--- a/ccdcapture.h
+++ b/ccdcapture.h
@@ -20,14 +20,21 @@

 #include <fitsio.h> // FLEN_CARD
 #include <pthread.h>
+#include <semaphore.h>
 #include <stdint.h>
 #include <stdlib.h> // for size_t

+// max strings in header
+#define FITS_HEADER_STRINGS_MAX (1000)
+
 // magic to mark our SHM
 #define CC_SHM_MAGIC   (0xdeadbeef)

+// semaphore for SHM protection
+#define SEM_NAME "ccdcapture"
+
 // base image parameters - sent by socket and stored in shared memory
-typedef struct __attribute__((packed, aligned(4))){
+typedef struct __attribute__((packed)){
    uint32_t MAGICK;            // magick (DEADBEEF) - to mark our shm
    double timestamp;           // timestamp of image taken
    uint8_t bitpix;             // bits per pixel (8 or 16)
@@ -39,6 +46,8 @@ typedef struct __attribute__((packed, aligned(4))){
    size_t imnumber;            // counter of images captured from server's start
    void *data;                 // pointer to data (next byte after this struct) - only for server
    /* `data` is uint8_t or uint16_t depending on `bitpix` */
+    char fitsheader[FITS_HEADER_STRINGS_MAX][FLEN_CARD]; // FITS-header for given image
+    size_t headerstrings;       // amount of records in header
 } cc_IMG;

 typedef struct{
@@ -192,9 +201,11 @@ typedef struct{
 // wait for mutex locking
 #define CC_BUSY_TIMEOUT    (1.0)
 // wait for exposition ends (between subsequent check calls)
-#define CC_WAIT_TIMEOUT    (2.0)
+#define CC_WAIT_TIMEOUT    (15.0)
 // client will disconnect after this time from last server message
-#define CC_CLIENT_TIMEOUT  (3.0)
+#define CC_CLIENT_TIMEOUT  (30.0)
+// minimal sleep (us) time when client waits for exp end
+#define CC_IMWAIT_SLEEP     (1000)

 // fd - socket fd to send private messages, key, val - key and its value
 typedef cc_hresult (*cc_mesghandler)(int fd, const char *key, const char *val);
@@ -215,7 +226,6 @@ typedef enum{
 } cc_camera_state;

 // common information about everything
-#define CC_CMD_INFO        "info"
 #define CC_CMD_HELP        "help"
 // restart server
 #define CC_CMD_RESTART     "restartTheServer"
@@ -226,19 +236,17 @@ typedef enum{
 #define CC_CMD_SHMEMKEY    "shmemkey"

 // CCD/CMOS
+#define CC_CMD_IMNUMBER    "imnumber"
 #define CC_CMD_PLUGINCMD   "plugincmd"
 #define CC_CMD_CAMLIST     "camlist"
 #define CC_CMD_CAMDEVNO    "camdevno"
 #define CC_CMD_EXPOSITION  "exptime"
-#define CC_CMD_LASTFNAME   "lastfilename"
-#define CC_CMD_FILENAME    "filename"
-#define CC_CMD_FILENAMEPREFIX "filenameprefix"
 // rewrite=1 will rewrite files, =0 - not (only for `filename`)
-#define CC_CMD_REWRITE     "rewrite"
 #define CC_CMD_HBIN        "hbin"
 #define CC_CMD_VBIN        "vbin"
 #define CC_CMD_CAMTEMPER   "tcold"
-#define CC_CMD_CAMFANSPD   "ccdfanspeed"
+#define CC_CMD_CAMFANSPD   "camfanspeed"
+#define CC_CMD_CAMFLAGS    "camflags"
 #define CC_CMD_SHUTTER     "shutter"
 #define CC_CMD_CONFIO      "confio"
 #define CC_CMD_IO          "io"
@@ -250,7 +258,7 @@ typedef enum{
 // expstate=CAMERA_CAPTURE will start exposition, CAMERA_IDLE - cancel
 #define CC_CMD_EXPSTATE    "expstate"
 #define CC_CMD_TREMAIN     "tremain"
-#define CC_CMD_8BIT        "8bit"
+#define CC_CMD_8BIT        "lowres"
 #define CC_CMD_FASTSPD     "fastspeed"
 #define CC_CMD_DARK        "dark"
 #define CC_CMD_INFTY       "infty"
@@ -262,17 +270,21 @@ typedef enum{
 #define CC_CMD_OBJECT      "object"
 #define CC_CMD_PROGRAM     "program"
 #define CC_CMD_OBJTYPE     "objtype"
-#define CC_CMD_HEADERFILES "headerfiles"

 // focuser
 #define CC_CMD_FOCLIST     "foclist"
 #define CC_CMD_FDEVNO      "focdevno"
 #define CC_CMD_FGOTO       "focpos"
+#define CC_CMD_FMINPOS     "focminpos"
+#define CC_CMD_FMAXPOS     "focmaxpos"
+#define CC_CMD_FTEMP       "foctemp"

 // wheel
 #define CC_CMD_WLIST       "wlist"
 #define CC_CMD_WDEVNO      "wdevno"
 #define CC_CMD_WPOS        "wpos"
+#define CC_CMD_WMAXPOS     "wmaxpos"
+#define CC_CMD_WTEMP       "wtemp"

 typedef enum{ // parameter type
    CC_PAR_NONE, // no parameter
@@ -328,12 +340,16 @@ int cc_sendmessage(int fd, const char *msg, int l);
 int cc_sendstrmessage(int fd, const char *msg);
 char *cc_get_keyval(char **keyval);
 cc_IMG *cc_getshm(key_t key, size_t imsize);
-int cc_canberead(int fd);
 cc_hresult cc_setint(int fd, cc_strbuff *cbuf, const char *cmd, int val);
 cc_hresult cc_getint(int fd, cc_strbuff *cbuf, const char *cmd, int *val);
 cc_hresult cc_setfloat(int fd, cc_strbuff *cbuf, const char *cmd, float val);
 cc_hresult cc_getfloat(int fd, cc_strbuff *cbuf, const char *cmd, float *val);

-char *cc_nextkw(char *buf, char record[FLEN_CARD+1], int newlines);
-size_t cc_kwfromfile(cc_charbuff *b, char *filename);
-int cc_charbuf2kw(cc_charbuff *b, fitsfile *f);
+char *cc_nextkw(char *buf, char record[FLEN_CARD], int newlines);
+size_t cc_kwfromfile(cc_IMG *img, char *filename);
+//int cc_charbuf2kw(cc_charbuff *b, fitsfile *f);
+
+void cc_init_sem(int isserver);
+int cc_lock_shm(int isserver);
+void cc_unlock_shm();
+void cc_remove_sem();
--- a/ccdfunc.c
+++ b/ccdfunc.c
@@ -73,15 +73,20 @@ static int check_filenameprefix(char *buff, int buflen){
    return FALSE;
 }

-cc_charbuff *getFITSheader(cc_IMG *img){
-    static cc_charbuff charbuf = {0};
-    cc_charbufclr(&charbuf);
-    char card[FLEN_CARD+1], templ[2*FLEN_CARD+1], bufc[FLEN_CARD+1];
+/**
+ * @brief fillFITSheader (server-side only!) - update img->fitsheader by image data and additional headers
+ * @param img (io) - image to update
+ * @return img->headerstrings
+ */
+size_t fillFITSheader(cc_IMG *img){
+    if(!img) return 0;
+    img->headerstrings = 0;
+    char card[FLEN_CARD], templ[2*FLEN_CARD], bufc[FLEN_CARD];
 #define FORMKW(in)                              \
 do{ int status = 0, kt = 0;                      \
    fits_parse_template(in, card, &kt, &status);  \
    if(status) fits_report_error(stderr, status);\
-    else{cc_charbufaddline(&charbuf, card);} \
+    else if(img->headerstrings < FITS_HEADER_STRINGS_MAX) snprintf(img->fitsheader[img->headerstrings++], FLEN_CARD, "%s", card); \
 }while(0)
 #define FORMINT(key, val, comment) do{ \
    snprintf(templ, FLEN_CARD, "%s = %d / %s", key, val, comment); \
@@ -98,12 +103,6 @@ do{ int status = 0, kt = 0;                      \
    calculate_stat(img);
    float tmpf = 0.0;
    int tmpi = 0;
-   /* FORMKW("COMMENT this is just a test comment - 0");
-    FORMKW("COMMENT this is just a test comment - 1");
-    FORMKW("COMMENT this is just a test comment - 2");
-    FORMKW("HIERARCH longsome1 = 'this is just a test comment'");
-    FORMKW("HIERARCH longsome2 = 'this is just a test comment'");
-    FORMKW("HIERARCH longsome3 = 'this is just a test comment'");*/
    FORMKW("ORIGIN = 'SAO RAS' / Organization responsible for the data");
    FORMKW("OBSERVAT = 'Special Astrophysical Observatory, Russia' / Observatory name");
    FORMKW("INSTRUME = 'direct imaging'  / Instrument");
@@ -171,10 +170,10 @@ do{ int status = 0, kt = 0;                      \
        if(wheel->getTbody && wheel->getTbody(&tmpf))
            FORMFLT("FILTTEMP", tmpf, "Filter wheel body temperature, degr C");
    }
-    if(GP->addhdr){ // add records from files
+    if(GP->addhdr){ // add records from server-side files
        char **nxtfile = GP->addhdr;
        while(*nxtfile){
-            cc_kwfromfile(&charbuf, *(nxtfile++));
+            cc_kwfromfile(img, *(nxtfile++));
        }
    }
    // add these keywords after all to override records from files
@@ -185,7 +184,7 @@ do{ int status = 0, kt = 0;                      \
    if(camera->getModelName && camera->getModelName(bufc, FLEN_CARD))
        FORMSTR("DETECTOR", bufc, "Detector model");
    if(GP->instrument) FORMSTR("INSTRUME", GP->instrument, "Instrument");
-    return &charbuf;
+    return img->headerstrings;
 }

 // save FITS file `img` into GP->outfile or GP->outfileprefix_XXXX.fits
@@ -193,14 +192,10 @@ do{ int status = 0, kt = 0;                      \
 // return FALSE if failed
 int saveFITS(cc_IMG *img, char **outp){
    int ret = FALSE;
-    if(!camera){
-        LOGERR("Can't save image: no camera device");
-        WARNX(_("Camera device unknown"));
-        return FALSE;
-    }
    char fnam[PATH_MAX+1];
    if(!GP->outfile && !GP->outfileprefix){
        LOGWARN("Image not saved: neither filename nor filename prefix pointed");
+        WARNX("Image not saved: neither filename nor filename prefix pointed");
        return FALSE;
    }
    if(GP->outfile){ // pointed specific output file name like "file.fits", check it
@@ -236,8 +231,20 @@ int saveFITS(cc_IMG *img, char **outp){
    if(nbytes == 1) TRYFITS(fits_create_img, fp, BYTE_IMG, 2, naxes);
    else TRYFITS(fits_create_img, fp, USHORT_IMG, 2, naxes);
    if(fitserror) goto cloerr;
-    cc_charbuff *bufhdr = getFITSheader(img);
-    cc_charbuf2kw(bufhdr, fp);
+    // write header
+    char key[FLEN_KEYWORD];
+    for(size_t i = 0; i < img->headerstrings; ++i){
+        char *rec = img->fitsheader[i];
+        char *eq = strchr(rec, '=');
+        int status = 0;
+        if(eq){ // found 'key = value / comment'
+            size_t l = eq - rec;
+            if(l > FLEN_KEYWORD-1) l = FLEN_KEYWORD-1;
+            memcpy(key, rec, l); key[l] = 0;
+            fits_update_card(fp, key, rec, &status);
+        }else fits_write_record(fp, rec, &status);
+        if(status) fits_report_error(stderr, status);
+    }
    // creation date/time
    int s = 0;
    fits_write_date(fp, &s);
@@ -377,11 +384,11 @@ void focusers(){
    if(num < 0) num = 0;
    if(num > focuser->Ndevices - 1){
        WARNX(_("Found %d focusers, you point number %d"), focuser->Ndevices, num);
-        return;
+        goto retn;
    }
    if(!focuser->setDevNo(num)){
        WARNX(_("Can't set active focuser number"));
-        return;
+        goto retn;
    }
    char buf[BUFSIZ];
    if(focuser->getModelName(buf, BUFSIZ)){
@@ -395,18 +402,18 @@ void focusers(){
    float minpos, maxpos, curpos;
    if(!focuser->getMinPos(&minpos) || !focuser->getMaxPos(&maxpos)){
        WARNX(_("Can't get focuser limit positions"));
-        return;
+        goto retn;
    }
    verbose(1, "FOCMINPOS=%g", minpos);
    verbose(1, "FOCMAXPOS=%g", maxpos);
    DBG("FOCMINPOS=%g, FOCMAXPOS=%g", minpos, maxpos);
    if(!focuser->getPos(&curpos)){
        WARNX(_("Can't get current focuser position"));
-        return;
+        goto retn;
    }
    verbose(1, "FOCPOS=%g", curpos);
    DBG("Curpos = %g", curpos);
-    if(isnan(GP->gotopos) && isnan(GP->addsteps)) return; // no focuser commands
+    if(isnan(GP->gotopos) && isnan(GP->addsteps)) goto retn; // no focuser commands
    float tagpos = 0.;
    if(!isnan(GP->gotopos)){ // set absolute position
        tagpos = GP->gotopos;
@@ -416,13 +423,15 @@ void focusers(){
    DBG("tagpos: %g", tagpos);
    if(tagpos < minpos || tagpos > maxpos){
        WARNX(_("Can't set position %g: out of limits [%g, %g]"), tagpos, minpos, maxpos);
-        return;
+        goto retn;
    }
    if(tagpos - minpos < __FLT_EPSILON__){
        if(!focuser->home(GP->async)) WARNX(_("Can't home focuser"));
    }else{
        if(!focuser->setAbsPos(GP->async, tagpos)) WARNX(_("Can't set position %g"), tagpos);
    }
+retn:
+    focclose();
 }

 cc_Wheel *startWheel(){
@@ -465,11 +474,11 @@ void wheels(){
    if(num < 0) num = 0;
    if(num > wheel->Ndevices - 1){
        WARNX(_("Found %d wheels, you point number %d"), wheel->Ndevices, num);
-        return;
+        goto retn;
    }
    if(!wheel->setDevNo(num)){
        WARNX(_("Can't set active wheel number"));
-        return;
+        goto retn;
    }
    char buf[BUFSIZ];
    if(wheel->getModelName(buf, BUFSIZ)){
@@ -485,17 +494,19 @@ void wheels(){
    }else WARNX("Can't get current wheel position");
    if(!wheel->getMaxPos(&maxpos)){
        WARNX(_("Can't get max wheel position"));
-        return;
+        goto retn;
    }
    verbose(1, "WHEELMAXPOS=%d", maxpos);
    pos = GP->setwheel;
-    if(pos == -1) return; // no wheel commands
+    if(pos == -1) goto retn; // no wheel commands
    if(pos < 0 || pos > maxpos){
        WARNX(_("Wheel position should be from 0 to %d"), maxpos);
-        return;
+        goto retn;
    }
    if(!wheel->setPos(pos))
        WARNX(_("Can't set wheel position %d"), pos);
+retn:
+    closewheel();
 }
 /*
 static void closeall(){
@@ -916,6 +927,7 @@ int start_socket(int isserver){
    }
    if(isserver){
        imsock = cc_open_socket(TRUE, GP->imageport, 2); // image socket should be networked
+        DBG("imsock=%d, image port=%s", imsock, GP->imageport);
        server(sock, imsock);
    }else{
 #ifdef IMAGEVIEW
--- a/ccdfunc.h
+++ b/ccdfunc.h
@@ -24,7 +24,7 @@ extern cc_Focuser *focuser;
 extern cc_Wheel *wheel;

 void calculate_stat(cc_IMG *image);
-cc_charbuff *getFITSheader(cc_IMG *img);
+size_t fillFITSheader(cc_IMG *img);
 int saveFITS(cc_IMG *img, char **outp); // for imageview module
 void focusers();
 void wheels();
--- a/client.c
+++ b/client.c
@@ -37,24 +37,26 @@
 extern double answer_timeout;

 static char sendbuf[BUFSIZ];
+static char *lastfilename = NULL;
 // send message and wait any answer
-#define SENDMSG(...) do{DBG("SENDMSG"); snprintf(sendbuf, BUFSIZ-1, __VA_ARGS__); verbose(2, "\t> %s", sendbuf); cc_sendstrmessage(sock, sendbuf); while(getans(sock, NULL));} while(0)
+#define SENDMSG(...) do{DBG("SENDMSG"); snprintf(sendbuf, BUFSIZ-1, __VA_ARGS__); verbose(2, "\t> %s", sendbuf); if(!cc_sendstrmessage(sock, sendbuf)) ERRX("Server disconnected"); while(getans(sock, NULL));} while(0)
 // send message and wait answer starting with 'cmd'
-#define SENDMSGW(cmd, ...) do{DBG("SENDMSGW"); snprintf(sendbuf, BUFSIZ-1, cmd __VA_ARGS__); verbose(2, "\t> %s", sendbuf); cc_sendstrmessage(sock, sendbuf);}while(!getans(sock, cmd))
+#define SENDMSGW(cmd, ...) do{DBG("SENDMSGW"); snprintf(sendbuf, BUFSIZ-1, cmd __VA_ARGS__); verbose(2, "\t> %s", sendbuf); if(!cc_sendstrmessage(sock, sendbuf)) ERRX("Server disconnected");}while(!getans(sock, cmd))
 // send command and wait for answer on it
-#define SENDCMDW(cmd) do{DBG("SENDCMDW"); strncpy(sendbuf, cmd, BUFSIZ-1); verbose(2, "\t> %s", sendbuf); cc_sendstrmessage(sock, sendbuf);}while(!getans(sock, cmd))
+#define SENDCMDW(cmd) do{DBG("SENDCMDW"); strncpy(sendbuf, cmd, BUFSIZ-1); verbose(2, "\t> %s", sendbuf); if(!cc_sendstrmessage(sock, sendbuf)) ERRX("Server disconnected");}while(!getans(sock, cmd))
 static volatile atomic_int expstate = CAMERA_CAPTURE;
 static int xm0,ym0,xm1,ym1; // max format
 static int xc0,yc0,xc1,yc1; // current format

-#ifdef IMAGEVIEW
-static volatile atomic_int grabno = 0, oldgrabno = 0;
+static volatile atomic_int grabno = 0;
+static int oldgrabno = 0;
 // IPC key for shared memory
 static cc_IMG ima = {0}, *shmima = NULL; // ima - local storage, shmima - shm (if available)
 static size_t imbufsz = 0; // image buffer for allocated `ima`
-static uint8_t *imbuf = NULL;
-#endif
+static uint8_t *imbuf = NULL; // we can't use shmima->data as it belongs to server, so we use `imbuf` and set ima.data = imbuf
+static int current_image_number = -1; // for net-parser - last number of exposed image

+#if 0
 // read message from queue or file descriptor
 static char *readmsg(int fd){
    static cc_strbuff *buf = NULL;
@@ -70,65 +72,96 @@ static char *readmsg(int fd){
        return FALSE;
    }
    if(test()) return buf->string;
-    if(1 == cc_canberead(fd)){
+    if(1 == sl_canread(fd)){
        if(cc_read2buf(fd, buf)){
            if(test()) return buf->string;
        }else ERRX("Server disconnected");
    }
    return NULL;
 }
+#endif

+#define CMP_ANS(cmd, ans)   strncmp(cmd, ans, sizeof(cmd)-1)
 // parser of CCD server messages; return TRUE to exit from polling cycle of `getans` (if receive 'FAIL', 'OK' or 'BUSY')
-static int parseans(char *ans){
-    if(!ans) return FALSE;
+static cc_hresult parseans(char *ans){
+    if(!ans) return CC_RESULT_BADKEY;
    //TIMESTAMP("parseans() begin");
    //DBG("Parsing of '%s'", ans);
-    if(0 == strcmp(cc_hresult2str(CC_RESULT_BUSY), ans)){
-        WARNX("Server busy");
-        return FALSE;
+    if(0 == strcmp(cc_hresult2str(CC_RESULT_OK), ans)) return CC_RESULT_OK;
+    for(cc_hresult res = CC_RESULT_BUSY; res < CC_RESULT_NUM; ++res){
+        const char *resmsg = cc_hresult2str(res);
+        if(0 == strcmp(resmsg, ans)){
+            verbose(1, "Server answered: %s", resmsg);
+            return res;
+        }
    }
-    if(0 == strcmp(cc_hresult2str(CC_RESULT_FAIL), ans)) return TRUE;
-    if(0 == strcmp(cc_hresult2str(CC_RESULT_OK), ans)) return TRUE;
    char *val = cc_get_keyval(&ans); // now `ans` is a key and `val` its value
-    if(0 == strcmp(CC_CMD_EXPSTATE, ans)){
-        expstate = atoi(val);
-        DBG("Exposition state: %d", expstate);
-        return TRUE;
-    }else if(0 == strcmp(CC_CMD_FRAMEMAX, ans)){
+    if(0 == CMP_ANS(CC_CMD_EXPSTATE, ans)){
+        int st = atoi(val);
+        atomic_store(&expstate, st);
+        DBG("Current state: %d", atomic_load(&expstate));
+        return CC_RESULT_SILENCE;
+    }else if(0 == CMP_ANS(CC_CMD_FRAMEMAX, ans)){
        sscanf(val, "%d,%d,%d,%d", &xm0, &ym0, &xm1, &ym1);
        DBG("Got maxformat: %d,%d,%d,%d", xm0, ym0, xm1, ym1);
-        return TRUE;
-    }else if(0 == strcmp(CC_CMD_FRAMEFORMAT, ans)){
+        return CC_RESULT_SILENCE;
+    }else if(0 == CMP_ANS(CC_CMD_FRAMEFORMAT, ans)){
        sscanf(val, "%d,%d,%d,%d", &xc0, &yc0, &xc1, &yc1);
        DBG("Got current format: %d,%d,%d,%d", xc0, yc0, xc1, yc1);
-        return TRUE;
-    }else if(0 == strcmp(CC_CMD_INFTY, ans)) return TRUE;
+        return CC_RESULT_SILENCE;
+    }else if(0 == CMP_ANS(CC_CMD_IMNUMBER, ans)){
+        current_image_number = atoi(val);
+    }
    //TIMESTAMP("parseans() end");
-    return FALSE;
+    return CC_RESULT_SILENCE; // echo of sent command or something else
 }

 // read until timeout all messages from server; return FALSE if there was no messages from server
 // if msg != NULL - wait for it in answer
 static int getans(int sock, const char *msg){
    double t0 = sl_dtime();
+    char buf[BUFSIZ+1];
+    int idx = 0;
    char *ans = NULL;
-    while(sl_dtime() - t0 < answer_timeout){
-        char *s = readmsg(sock);
-        if(!s) continue;
+    TIMESTAMP("GetAns(%s)", msg);
+    double tmout = answer_timeout + 5.; // make first timeout larger for slow networks
+    // TODO: increase first timeout up to 15-30s (add key?)
+    cc_hresult res = CC_RESULT_FAIL;
+    while(sl_dtime() - t0 < tmout){
+        ans = NULL;
+        if(1 == sl_canread(sock)){
+            ssize_t got = read(sock, buf+idx, BUFSIZ-idx);
+            if(got > 0){
+                idx += got;
+                buf[idx] = 0;
+                char *nl = strchr(buf, '\n');
+                if(nl){
+                    *nl = 0;
+                    ans = buf;
+                    DBG("got '%s'", ans);
+                }
+            }
+        }
+        if(!ans) continue;
+        // got answer -> make timeout less
+        tmout = answer_timeout;
        t0 = sl_dtime();
-        ans = s;
        TIMESTAMP("Got from server: %s", ans);
        verbose(1, "\t%s", ans);
-DBG("1 msg-> %s, ans -> %s", msg, ans);
-        if(parseans(ans)){
-            DBG("2 msg-> %s, ans -> %s", msg, ans);
-            if(msg && strncmp(ans, msg, strlen(msg))) continue;
-            DBG("BREAK");
-            break;
+        DBG("1 msg-> %s, ans -> %s", msg, ans);
+        res = parseans(ans);
+        DBG("2 msg-> %s, ans -> %s; result: %d", msg, ans, res);
+        if(msg){
+            if(res != CC_RESULT_SILENCE || strncmp(ans, msg, strlen(msg))) continue;
+            else res = CC_RESULT_OK;
        }
-
+        DBG("Got answer -> break");
+        break;
    }
-    return ((ans) ? TRUE : FALSE);
+    TIMESTAMP("GetAns(%s), ans: '%s', result: %d", msg, ans, res);
+    if(!ans) DBG("Got no answer from server; result=%d", res);
+    if(res == CC_RESULT_OK) return TRUE;
+    return FALSE;
 }

 /**
@@ -149,16 +182,35 @@ static void send_headers(int sock){
    DBG("infty=%d", GP->infty);
    if(GP->infty > -1) SENDMSGW(CC_CMD_INFTY, "=%d", GP->infty);
    // common information
-    SENDMSG(CC_CMD_INFO);
+    if(GP->listdevices) SENDCMDW(CC_CMD_CAMLIST);
+    if(GP->camdevno > -1) SENDMSGW(CC_CMD_CAMDEVNO, "=%d", GP->camdevno);
+    if(GP->info){
+        SENDCMDW(CC_CMD_HBIN);
+        SENDCMDW(CC_CMD_VBIN);
+        SENDCMDW(CC_CMD_CAMTEMPER);
+        SENDCMDW(CC_CMD_EXPOSITION);
+        SENDCMDW(CC_CMD_EXPSTATE);
+    }
    // focuser
    if(GP->listdevices) SENDMSG(CC_CMD_FOCLIST);
    if(GP->focdevno > -1) SENDMSG(CC_CMD_FDEVNO "=%d", GP->focdevno);
+    if(GP->info){
+        SENDCMDW(CC_CMD_FGOTO);
+        SENDCMDW(CC_CMD_FMINPOS);
+        SENDCMDW(CC_CMD_FMAXPOS);
+        SENDCMDW(CC_CMD_FTEMP);
+    }
    if(!isnan(GP->gotopos)){
        SENDMSGW(CC_CMD_FGOTO, "=%g", GP->gotopos);
    }
    // wheel
    if(GP->listdevices) SENDCMDW(CC_CMD_WLIST);
    if(GP->whldevno > -1) SENDMSGW(CC_CMD_WDEVNO, "=%d", GP->whldevno);
+    if(GP->info){
+        SENDCMDW(CC_CMD_WPOS);
+        SENDCMDW(CC_CMD_WMAXPOS);
+        SENDCMDW(CC_CMD_WTEMP);
+    }
    if(GP->setwheel > -1) SENDMSGW(CC_CMD_WPOS, "=%d", GP->setwheel);
    DBG("nxt");
    // CCD/CMOS
@@ -181,8 +233,6 @@ static void send_headers(int sock){
        SENDMSGW(CC_CMD_FRAMEFORMAT, "=%d,%d,%d,%d", GP->X0, GP->Y0, GP->X1, GP->Y1);
    }
    if(GP->cancelexpose) SENDMSGW(CC_CMD_EXPSTATE, "=%d", CAMERA_IDLE);
-    if(GP->listdevices) SENDCMDW(CC_CMD_CAMLIST);
-    if(GP->camdevno > -1) SENDMSGW(CC_CMD_CAMDEVNO, "=%d", GP->camdevno);
    if(GP->hbin) SENDMSGW(CC_CMD_HBIN, "=%d", GP->hbin);
    if(GP->vbin) SENDMSGW(CC_CMD_VBIN, "=%d", GP->vbin);
    if(!isnan(GP->temperature)) SENDMSGW(CC_CMD_CAMTEMPER, "=%g", GP->temperature);
@@ -200,16 +250,6 @@ static void send_headers(int sock){
        if(GP->dark) SENDMSGW(CC_CMD_DARK, "=1");
        else SENDMSGW(CC_CMD_DARK, "=0");
    }
-    if(GP->outfile){
-        if(!*GP->outfile) SENDMSGW(CC_CMD_FILENAME, "=");
-        else SENDMSGW(CC_CMD_FILENAME, "=%s", makeabspath(GP->outfile, FALSE));
-        if(GP->rewrite) SENDMSGW(CC_CMD_REWRITE, "=1");
-        else SENDMSGW(CC_CMD_REWRITE, "=0");
-    }
-    if(GP->outfileprefix){
-        if(!*GP->outfileprefix) SENDMSGW(CC_CMD_FILENAMEPREFIX, "=");
-        else SENDMSGW(CC_CMD_FILENAMEPREFIX, "=%s", makeabspath(GP->outfileprefix, FALSE));
-    }
    // FITS header keywords:
 #define CHKHDR(x, cmd)   do{if(x) SENDMSG(cmd "=%s", x);}while(0)
    CHKHDR(GP->author, CC_CMD_AUTHOR);
@@ -219,107 +259,6 @@ static void send_headers(int sock){
    CHKHDR(GP->prog_id, CC_CMD_PROGRAM);
    CHKHDR(GP->objtype, CC_CMD_OBJTYPE);
 #undef CHKHDR
-    if(GP->addhdr){
-        char buf[1024], *ptr = buf, **sptr = GP->addhdr;
-        *buf = 0;
-        int L = 1024;
-        while(*sptr){
-            if(!**sptr){
-                ++sptr; continue;
-            }
-            int N = snprintf(ptr, L-1, "%s,", *sptr++);
-            L -= N; ptr += N;
-        }
-        SENDMSGW(CC_CMD_HEADERFILES, "=%s", buf);
-    }
-}
-
-void client(int sock){
-    if(GP->restart){
-        SENDCMDW(CC_CMD_RESTART);
-        return;
-    }
-    send_headers(sock);
-    double t0 = sl_dtime(), tw = t0;
-    int Nremain = 0, nframe = 1;
-    // if client gives filename/prefix or Nframes, make exposition
-    if((GP->outfile && *GP->outfile) || (GP->outfileprefix && *GP->outfileprefix) || GP->nframes > 0){
-        Nremain = GP->nframes - 1;
-        if(Nremain < 1) Nremain = 0;
-        else GP->waitexpend = TRUE; // N>1 - wait for exp ends
-        SENDMSGW(CC_CMD_EXPSTATE, "=%d", CAMERA_CAPTURE);
-    }else{
-        int cntr = 0;
-        while(sl_dtime() - t0 < CC_WAIT_TIMEOUT && cntr < 3)
-            if(!getans(sock, NULL)) ++cntr;
-        DBG("RETURN: no more data");
-        return;
-    }
-    double timeout = GP->waitexpend ? CC_CLIENT_TIMEOUT : CC_WAIT_TIMEOUT;
-    verbose(1, "Exposing frame 1...");
-    if(GP->waitexpend){
-        expstate = CAMERA_CAPTURE; // could be changed earlier
-        verbose(2, "Wait for exposition end");
-    }
-    while(sl_dtime() - t0 < timeout){
-        if(GP->waitexpend && sl_dtime() - tw > CC_WAIT_TIMEOUT){
-            SENDCMDW(CC_CMD_TREMAIN); // get remained time
-            tw = sl_dtime();
-            sprintf(sendbuf, "%s", CC_CMD_EXPSTATE);
-            cc_sendstrmessage(sock, sendbuf);
-        }
-        if(getans(sock, NULL)){ // got next portion of data
-            DBG("server message");
-            t0 = sl_dtime();
-            if(expstate == CAMERA_ERROR){
-                WARNX(_("Can't make exposition"));
-                continue;
-            }
-            //if(expstate != CAMERA_CAPTURE){
-            if(expstate == CAMERA_FRAMERDY){
-                verbose(2, "Frame ready!");
-                expstate = CAMERA_IDLE;
-                if(Nremain){
-                    verbose(1, "\n");
-                    if(GP->pause_len > 0){
-                        double delta, time1 = sl_dtime() + GP->pause_len;
-                        while(1){
-                            SENDCMDW(CC_CMD_CAMTEMPER);
-                            if((delta = time1 - sl_dtime()) < __FLT_EPSILON__) break;
-                            if(delta > 1.) verbose(1, _("%d seconds till pause ends\n"), (int)delta);
-                            if(delta > 6.) sleep(5);
-                            else if(delta > 1.) sleep((int)delta);
-                            else usleep((int)(delta*1e6 + 1));
-                        }
-                    }
-                    verbose(1, "Exposing frame %d...", ++nframe);
-                    --Nremain;
-                    SENDMSGW(CC_CMD_EXPSTATE, "=%d", CAMERA_CAPTURE);
-                }else{
-                    GP->waitexpend = 0;
-                    timeout = answer_timeout; // wait for last file name
-                }
-            }
-        }
-    }
-    if(GP->waitexpend) WARNX(_("Server timeout"));
-    // clear "filename" and "filenameprefix"
-    SENDMSGW(CC_CMD_FILENAME, "=");
-    SENDMSGW(CC_CMD_FILENAMEPREFIX, "=");
-    // clear "rewrite"
-    SENDMSGW(CC_CMD_REWRITE, "=0");
-    DBG("Timeout");
-}
-
-#ifdef IMAGEVIEW
-static int controlfd = -1; // control socket FD
-void init_grab_sock(int sock){
-    if(sock < 0) ERRX("Can't run without command socket");
-    controlfd = sock;
-    send_headers(sock);
-    if(!GP->forceimsock && !shmima){ // init shm buffer if user don't ask to work through image socket
-        shmima = cc_getshm(GP->shmkey, 0); // try to init client shm
-    }
 }

 /**
@@ -329,10 +268,11 @@ void init_grab_sock(int sock){
 static int readNbytes(int fd, size_t N, uint8_t *buf){
    size_t got = 0, need = N;
    double t0 = sl_dtime();
-    while(sl_dtime() - t0 < CC_CLIENT_TIMEOUT /*&& cc_canberead(fd)*/ && need){
+    while(sl_dtime() - t0 < CC_CLIENT_TIMEOUT /*&& sl_canread(fd)*/ && need){
        t0 = sl_dtime();
        ssize_t rd = read(fd, buf + got, need);
        if(rd <= 0){
+            if(errno == EAGAIN || errno == EWOULDBLOCK) continue;
            WARNX("Server disconnected");
            signals(1);
        }
@@ -344,16 +284,35 @@ static int readNbytes(int fd, size_t N, uint8_t *buf){

 /**
 * @brief getimage - read image from shared memory or socket
+ * @param askheader == TRUE for storing FITS-header
+ * @return FALSE if failed to catch image
 */
-static void getimage(){
+static int getimage(int askheader){
    FNAME();
-    int imsock = -1;
+    int imsock = -1, shmlocked = FALSE, ret = FALSE;
    static double oldtimestamp = -1.;
    TIMESTAMP("Get image sizes");
    if(shmima){ // read image from shared memory
+        DBG("Try to read from SHM");
+        double t0 = sl_dtime();
+        while(sl_dtime() - t0 < MUTEX_LOCK_TMOUT){
+            if(cc_lock_shm(FALSE)){
+                DBG("Locked");
+                shmlocked = TRUE;
+                break;
+            }
+            usleep(100);
+        }
+        if(!shmlocked){
+            WARNX("Can't lock shared memory");
+            return FALSE;
+        }
        memcpy(&ima, shmima, sizeof(cc_IMG));
    }else{ // get image by socket
-        imsock = cc_open_socket(FALSE, GP->imageport, TRUE);
+        if(imsock < 0){
+            DBG("Open socket @ %s", GP->imageport);
+            imsock = cc_open_socket(FALSE, GP->imageport, TRUE);
+        }
        if(imsock < 0) ERRX("getimage(): can't open image transport socket");
        // get image size
        if(!readNbytes(imsock, sizeof(cc_IMG), (uint8_t*)&ima)){
@@ -361,6 +320,10 @@ static void getimage(){
            goto eofg;
        }
    }
+    if(ima.MAGICK != CC_SHM_MAGIC){
+        WARNX("Wrong image: bad magick");
+        goto eofg;
+    }
    if(ima.bytelen < 1){
        WARNX("Wrong image size");
        goto eofg;
@@ -376,82 +339,256 @@ static void getimage(){
    ima.data = imbuf; // renew this value each time after getting `ima` from server
    TIMESTAMP("Start of data read");
    if(shmima){
-        uint8_t *datastart = (uint8_t*)shmima + sizeof(cc_IMG);
+        uint8_t *datastart = ((uint8_t*)shmima) + sizeof(cc_IMG);
+        DBG("first image byte: %d", *datastart);
        memcpy(imbuf, datastart, ima.bytelen);
        TIMESTAMP("Got by shared memory");
+        if(!askheader){
+            cc_unlock_shm();
+            shmlocked = FALSE;
+        }
+        ret = TRUE;
    }else{
        if(!readNbytes(imsock, ima.bytelen, imbuf)){
            WARNX("Can't read image data");
            goto eofg;
        }
+        ret = TRUE;
        TIMESTAMP("Got by socket");
    }
-    DBG("timestamps old-new=%g; imno: %zd", oldtimestamp-ima.timestamp, ima.imnumber);
+    DBG("timestamps new-old=%g; imno: %zd", ima.timestamp - oldtimestamp, ima.imnumber);
    if(ima.timestamp != oldtimestamp){ // test if image is really new
        oldtimestamp = ima.timestamp;
-        grabno = ima.imnumber;
+        atomic_store(&grabno, ima.imnumber);
        TIMESTAMP("Got image #%zd", ima.imnumber);
+        if(askheader){ // read FITS-header for later saving
+            if(shmima){
+                size_t rsz = FLEN_CARD * ima.headerstrings;
+                memcpy(ima.fitsheader, shmima->fitsheader, rsz);
+            }else{
+                uint8_t card[FLEN_CARD];
+                for(size_t i = 0; i < ima.headerstrings; ++i){
+                    if(!readNbytes(imsock, FLEN_CARD, card)){
+                        WARNX("Can't read full header, got %zd records from %zd", i, ima.headerstrings);
+                        break;
+                    }
+                    memcpy(&ima.fitsheader[i], card, FLEN_CARD);
+                }
+            }
+            if(GP->addhdr){ // add records from client-side files
+                char **nxtfile = GP->addhdr;
+                while(*nxtfile){
+                    cc_kwfromfile(&ima, *(nxtfile++));
+                }
+            }
+        }else ima.headerstrings = 0;
    }else WARNX("Still got old image");
 eofg:
-    if(!shmima) close(imsock);
+    if(imsock != -1) close(imsock); // reopen in next time in case of error
+    if(shmlocked) cc_unlock_shm();
+    return ret;
 }

-static void *grabnext(void _U_ *arg){ // daemon grabbing images through the net
+// get number of current image; return number or -1 if got error/timeout
+static int curImNo(int sock){
+    if(shmima){
+        if(!cc_lock_shm(FALSE)) return -1;
+        int CurNo = shmima->imnumber;
+        cc_unlock_shm();
+        return CurNo;
+    }
+    // no shared memory: try to get number over TCP
+    SENDCMDW(CC_CMD_IMNUMBER);
+    return current_image_number;
+}
+
+void client(int sock){
+    if(sock < 0) ERRX("Can't run without command socket");
+    if(!GP->forceimsock && !shmima){ // init shm buffer if user don't ask to force workign through image socket
+        shmima = cc_getshm(GP->shmkey, 0); // try to init client shm
+        cc_init_sem(FALSE);
+        DBG("Got access to shared memory: %s", shmima ? "OK" : "FAIL");
+    }
+    if(GP->restart){
+        SENDCMDW(CC_CMD_RESTART);
+        return;
+    }
+    TIMEINIT();
+    send_headers(sock);
+    TIMESTAMP("Got headers");
+    double t0 = sl_dtime(), tw, tstart;
+    int Nremain = 0, nframe = 1;
+    // if client gives filename/prefix or Nframes, make exposition
+    if((GP->outfile && *GP->outfile) || (GP->outfileprefix && *GP->outfileprefix) || GP->nframes > 0){
+        Nremain = GP->nframes;
+        if(Nremain < 1) Nremain = 1;
+        SENDMSGW(CC_CMD_EXPSTATE, "=%d", CAMERA_CAPTURE); // call to start capture
+    } else return; // just send headers and exit
+    double timeout = CC_CLIENT_TIMEOUT;
+    verbose(1, "Exposing frame 1...");
+    atomic_store(&expstate, CAMERA_CAPTURE); // could be changed earlier
+    DBG("Current state: %d", atomic_load(&expstate));
+    verbose(2, "Wait for exposition end");
+    t0 = sl_dtime();
+    tw = tstart = t0;
+    int lastImNo = curImNo(sock);
+    while(sl_dtime() - t0 < timeout){
+        if(sl_dtime() - tw > CC_WAIT_TIMEOUT){
+            SENDCMDW(CC_CMD_TREMAIN); // get remained time
+            tw = sl_dtime();
+        }
+        if(sl_dtime() - tstart < GP->exptime){
+            t0 = sl_dtime(); // refresh timeout until exp not ends
+            continue;
+        }else{
+            SENDCMDW(CC_CMD_EXPSTATE);
+        }
+        int curst = atomic_load(&expstate);
+        DBG("Current state: %d", curst);
+        if(curst == CAMERA_ERROR){
+            WARNX(_("Can't make exposition"));
+            if(Nremain > 1){
+                verbose(1, "Exposing frame %d...", nframe);
+                SENDMSGW(CC_CMD_EXPSTATE, "=%d", CAMERA_CAPTURE);
+                tstart = sl_dtime();
+            }
+            continue;
+        }
+        if(curst == CAMERA_FRAMERDY){
+            atomic_store(&expstate, CAMERA_IDLE);
+            int cur = curImNo(sock);
+            DBG("Current state: %d, imno: %d", atomic_load(&expstate), cur);
+            if(Nremain > 1){ // start next capture
+                verbose(1, "Exposing frame %d...", nframe);
+                SENDMSGW(CC_CMD_EXPSTATE, "=%d", CAMERA_CAPTURE);
+                tstart = sl_dtime();
+            }
+            int failed = TRUE;
+            if(lastImNo < cur){
+                lastImNo = cur;
+                verbose(2, "Frame ready, try to grab");
+                if(!getimage(TRUE)){
+                    WARNX("Can't get next image");
+                }else{
+                    if(saveFITS(&ima, &lastfilename)){
+                        --Nremain;
+                        ++nframe;
+                        failed = FALSE;
+                    }
+                }
+            }else verbose(2, "Got already saved image, wait next");
+            if(failed && Nremain == 1){ // last image -> should re-expose
+                verbose(1, "Exposing frame %d...", nframe);
+                SENDMSGW(CC_CMD_EXPSTATE, "=%d", CAMERA_CAPTURE);
+                tstart = sl_dtime();
+            }
+            if(Nremain > 0){
+                if(GP->pause_len > 0){
+                    double delta, time1 = sl_dtime() + GP->pause_len;
+                    while(1){
+                        SENDCMDW(CC_CMD_CAMTEMPER);
+                        if((delta = time1 - sl_dtime()) < __FLT_EPSILON__) break;
+                        if(delta > 1.) verbose(1, _("%d seconds till pause ends\n"), (int)delta);
+                        if(delta > 6.) sleep(5);
+                        else if(delta > 1.) sleep((int)delta);
+                        else usleep((int)(delta*1e6 + 1));
+                    }
+                }
+            }else{
+                DBG("All images saved -> exit");
+                break;
+            }
+        }
+    }
+    if(Nremain > 0) WARNX(_("Server timeout"));
+}
+
+#ifdef IMAGEVIEW
+static int controlfd = -1; // control socket FD
+void init_grab_sock(int sock){
+    if(sock < 0) ERRX("Can't run without command socket");
+    controlfd = sock;
+    send_headers(sock);
+    if(!GP->forceimsock && !shmima){ // init shm buffer if user don't ask to work through image socket
+        shmima = cc_getshm(GP->shmkey, 0); // try to init client shm
+        cc_init_sem(FALSE);
+    }
+}
+
+// grab image for active viewer
+static void *grabnext(void _U_ *arg){
    FNAME();
    if(controlfd < 0) return NULL;
    int sock = controlfd;
+    int lastImNo = curImNo(sock);
    while(1){
        if(!getWin()) exit(1);
        TIMESTAMP("End of cycle, start new");
-        expstate = CAMERA_CAPTURE;
+        atomic_store(&expstate, CAMERA_CAPTURE);
+        DBG("Current state: %d", atomic_load(&expstate));
        TIMEINIT();
        SENDMSGW(CC_CMD_EXPSTATE, "=%d", CAMERA_CAPTURE); // start capture
        double timeout = GP->exptime + CC_CLIENT_TIMEOUT, t0 = sl_dtime();
        useconds_t sleept = 500000; // 0.5s
        if(GP->exptime < 0.5){
-            sleept = (useconds_t)(GP->exptime * 500000.);
-            if(sleept < 1000) sleept = 1000;
+            sleept = (useconds_t)(GP->exptime * 250000.); // a quater of exposition time
+            if(sleept < CC_IMWAIT_SLEEP) sleept = CC_IMWAIT_SLEEP;
        }
-//        double exptime = GP->exptime;
+        TIMESTAMP("Wait for exposition ends (%g s), sleep for %dus", timeout, sleept);
+        int curst = CAMERA_CAPTURE;
        while(sl_dtime() - t0 < timeout){
-            TIMESTAMP("Wait for exposition ends (%u us)", sleept);
+            DBG("start sleep for %dus", sleept);
            usleep(sleept);
-            TIMESTAMP("check answer");
-       //     getans(sock, NULL);
-            //TIMESTAMP("EXPSTATE ===> %d", expstate);
-            if(expstate != CAMERA_CAPTURE) break;
-            if(sl_dtime() - t0 < GP->exptime + 0.5) sleept = 1000;
+            SENDCMDW(CC_CMD_EXPSTATE);
+            curst = atomic_load(&expstate);
+            if(curst != CAMERA_CAPTURE) break;
+            if(sl_dtime() - t0 > GP->exptime && sleept != CC_IMWAIT_SLEEP){
+                DBG("Set sleeping time to %dus", sleept);
+                sleept = CC_IMWAIT_SLEEP;
+            }
        }
-        if(sl_dtime() - t0 >= timeout || expstate != CAMERA_FRAMERDY){
-            WARNX("Image wasn't received");
+        int cur = curImNo(sock);
+        if(sl_dtime() - t0 >= timeout || curst != CAMERA_FRAMERDY || cur <= lastImNo){
+            WARNX("Image wasn't received, state: %d, waiting: %g, lastNo: %d, curNo: %d (timeout: %g)", curst, sl_dtime() - t0, lastImNo, cur, timeout);
            continue;
        }
-        TIMESTAMP("Frame ready");
-        getimage();
+        lastImNo = cur;
+        TIMESTAMP("Frame ready (%d from server's start)", cur);
+        getimage(FALSE);
    }
    return NULL;
 }

-static void *waitimage(void _U_ *arg){ // passive waiting for next image
+// passive waiting for next image
+static void *waitimage(void _U_ *arg){
    FNAME();
    if(controlfd < 0) return NULL;
    int sock = controlfd;
+    int lastImNo = curImNo(sock);
+    double t0 = sl_dtime();
    while(1){
        if(!getWin()) exit(1);
-        getans(sock, NULL);
-        if(expstate != CAMERA_FRAMERDY){
-            usleep(1000);
+        double tcur = sl_dtime();
+        if(tcur - t0 >= CC_WAIT_TIMEOUT){
+            SENDCMDW(CC_CMD_EXPSTATE); // `ping` server to know if it disconnected
+            t0 = tcur;
+        }
+        int cur = curImNo(sock);
+        if(cur <= lastImNo){
+            usleep(CC_IMWAIT_SLEEP);
            continue;
        }
-        TIMESTAMP("End of cycle, start new");
+        lastImNo = cur;
+        TIMESTAMP("End of cycle #%d, start new", cur);
        TIMEINIT();
-        getimage();
-        expstate = CAMERA_IDLE;
+        getimage(FALSE);
+        atomic_store(&expstate, CAMERA_IDLE);
+        DBG("Current state: %d", atomic_load(&expstate));
    }
    return NULL;
 }

-// try to capture images through socket
+// try to capture images for viewer
 int sockcaptured(cc_IMG **imgptr){
    //TIMESTAMP("sockcaptured() start");
    if(!imgptr) return FALSE;
@@ -484,13 +621,12 @@ int sockcaptured(cc_IMG **imgptr){
           }
        }
    }else{ // grab in process
-        if(grabno != oldgrabno){ // image is ready
-            TIMESTAMP("Image #%d ready", grabno);
+        int curno = atomic_load(&grabno);
+        if(curno != oldgrabno){ // image is ready
+            TIMESTAMP("Image #%d ready", curno);
            if(*imgptr && (*imgptr != &ima)) free(*imgptr);
-            *imgptr = &ima; /*
-            ssize_t delta = ima.imnumber - oldgrabno;
-            if(delta > 0 && delta != 1) WARNX("sockcaptured(): missed %zd images", delta-1);*/
-            oldgrabno = grabno;
+            *imgptr = &ima;
+            oldgrabno = curno;
            framerate();
            //TIMESTAMP("sockcaptured() end, return TRUE");
            return TRUE;
--- a/cmdlnopts.c
+++ b/cmdlnopts.c
@@ -56,7 +56,7 @@ sl_option_t cmdlnopts[] = {
    {"focdevno",NEED_ARG,   NULL,    NA,    arg_int,    APTR(&G.focdevno),  N_("focuser device number (if many: 0, 1, 2 etc)")},
    {"help",    NO_ARGS,    &help,   1,     arg_none,   NULL,               N_("show this help")},
    {"rewrite", NO_ARGS,    &G.rewrite,1,   arg_none,   NULL,               N_("rewrite output file if exists")},
-    {"verbose", NO_ARGS,    NULL,   'V',    arg_none,   APTR(&G.verbose),   N_("verbose level (-V - messages, -VV - debug, -VVV - all shit)")},
+    {"verbose", NO_ARGS,    NULL,   'V',    arg_none,   APTR(&G.verbose),   N_("verbose level (-V - main messages, -VV - secondary messages, -VVV - debug)")},
    {"dark",    NO_ARGS,    NULL,   'd',    arg_int,    APTR(&G.dark),      N_("not open shutter, when exposing (\"dark frames\")")},
    {"8bit",    NO_ARGS,    NULL,   '8',    arg_int,    APTR(&G._8bit),     N_("run in 8-bit mode")},
    {"fast",    NO_ARGS,    NULL,   'f',    arg_none,   APTR(&G.fast),      N_("fast readout mode")},
@@ -71,7 +71,6 @@ sl_option_t cmdlnopts[] = {
    {"prog-id", NEED_ARG,   NULL,   'P',    arg_string, APTR(&G.prog_id),   N_("observing program name")},
    {"addrec",  MULT_PAR,   NULL,   'r',    arg_string, APTR(&G.addhdr),    N_("add records to header from given file[s]")},
    {"outfile", NEED_ARG,   NULL,   'o',    arg_string, APTR(&G.outfile),   N_("output file name")},
-    {"wait",    NO_ARGS,    &G.waitexpend,1,arg_none,   NULL,               N_("wait while exposition ends")},

    {"nflushes",NEED_ARG,   NULL,   'l',    arg_int,    APTR(&G.nflushes),  N_("N flushes before exposing (default: 1)")},
    {"hbin",    NEED_ARG,   NULL,   'h',    arg_int,    APTR(&G.hbin),      N_("horizontal binning to N pixels")},
@@ -111,6 +110,7 @@ sl_option_t cmdlnopts[] = {
    {"viewer",  NO_ARGS,    &G.viewer,1,    arg_none,   NULL,               N_("passive viewer (only get last images)")},
    {"restart", NO_ARGS,    &G.restart,1,   arg_none,   NULL,               N_("restart image server")},
    {"timeout", NEED_ARG,   NULL,   '0',    arg_double, APTR(&G.anstmout),  N_("network answer timeout (default: 0.1s)")},
+    {"info",    NO_ARGS,    &G.info, 1,     arg_none,   NULL,               N_("get base information about connected hardware (also increasing text messages level to 2)")},

    {"shmkey", NEED_ARG,    NULL,   'k',    arg_int,    APTR(&G.shmkey),    N_("shared memory (with image data) key (default: 7777777)")},
    {"forceimsock",NO_ARGS, &G.forceimsock,1, arg_none, NULL,               N_("force using image through socket transition even if can use SHM")},
--- a/cmdlnopts.h
+++ b/cmdlnopts.h
@@ -42,9 +42,9 @@ typedef struct{
    char **addhdr;      // list of files from which to add header records
    char **plugincmd;   // plugin commands
    int restart;        // restart server
-    int waitexpend;     // wait while exposition ends
    int cancelexpose;   // cancel exp (for Grasshopper - forbid forever)
    int client;         // run as client
+    int info;           // show main information about camera etc. in client's terminal
    int viewer;         // passive client (only get last images)
    int listdevices;    // list connected devices
    int fanspeed;       // fan speed: 0-2
--- a/locale/ru/LC_MESSAGES/ccd_capture.mo
+++ b/locale/ru/LC_MESSAGES/ccd_capture.mo
--- a/locale/ru/messages.po
+++ b/locale/ru/messages.po
@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2026-04-18 15:56+0300\n"
+"POT-Creation-Date: 2026-06-08 17:06+0300\n"
 "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
 "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
 "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -62,7 +62,8 @@ msgid "rewrite output file if exists"
 msgstr ""

 #: cmdlnopts.c:59
-msgid "verbose level (-V - messages, -VV - debug, -VVV - all shit)"
+msgid ""
+"verbose level (-V - main messages, -VV - secondary messages, -VVV - debug)"
 msgstr ""

 #: cmdlnopts.c:60
@@ -117,142 +118,144 @@ msgstr ""
 msgid "output file name"
 msgstr ""

-#: cmdlnopts.c:74
-msgid "wait while exposition ends"
-msgstr ""
-
-#: cmdlnopts.c:76
+#: cmdlnopts.c:75
 msgid "N flushes before exposing (default: 1)"
 msgstr ""

-#: cmdlnopts.c:77
+#: cmdlnopts.c:76
 msgid "horizontal binning to N pixels"
 msgstr ""

-#: cmdlnopts.c:78
+#: cmdlnopts.c:77
 msgid "vertical binning to N pixels"
 msgstr ""

-#: cmdlnopts.c:79
+#: cmdlnopts.c:78
 msgid "make series of N frames"
 msgstr ""

-#: cmdlnopts.c:80
+#: cmdlnopts.c:79
 msgid "make pause for N seconds between expositions"
 msgstr ""

-#: cmdlnopts.c:81
+#: cmdlnopts.c:80
 msgid "set exposure time to given value (seconds!)"
 msgstr ""

-#: cmdlnopts.c:82
+#: cmdlnopts.c:81
 msgid "cancel current exposition"
 msgstr ""

-#: cmdlnopts.c:83
+#: cmdlnopts.c:82
 msgid ""
 "absolute (not divided by binning!) frame X0 coordinate (-1 - all with "
 "overscan)"
 msgstr ""

-#: cmdlnopts.c:84
+#: cmdlnopts.c:83
 msgid "absolute frame Y0 coordinate (-1 - all with overscan)"
 msgstr ""

-#: cmdlnopts.c:85
+#: cmdlnopts.c:84
 msgid "absolute frame X1 coordinate (-1 - all with overscan)"
 msgstr ""

-#: cmdlnopts.c:86
+#: cmdlnopts.c:85
 msgid "absolute frame Y1 coordinate (-1 - all with overscan)"
 msgstr ""

-#: cmdlnopts.c:88
+#: cmdlnopts.c:87
 msgid "open shutter"
 msgstr ""

-#: cmdlnopts.c:89
+#: cmdlnopts.c:88
 msgid "close shutter"
 msgstr ""

-#: cmdlnopts.c:90
+#: cmdlnopts.c:89
 msgid "run exposition on LOW @ pin5 I/O port"
 msgstr ""

-#: cmdlnopts.c:91
+#: cmdlnopts.c:90
 msgid "run exposition on HIGH @ pin5 I/O port"
 msgstr ""

-#: cmdlnopts.c:92
+#: cmdlnopts.c:91
 msgid "get value of I/O port pins"
 msgstr ""

-#: cmdlnopts.c:93
+#: cmdlnopts.c:92
 msgid "move stepper motor asynchronous"
 msgstr ""

-#: cmdlnopts.c:95
+#: cmdlnopts.c:94
 msgid "set I/O port pins to given value (decimal number, pin1 is LSB)"
 msgstr ""

-#: cmdlnopts.c:96
+#: cmdlnopts.c:95
 msgid ""
 "configure I/O port pins to given value (decimal number, pin1 is LSB, 1 == "
 "output, 0 == input)"
 msgstr ""

-#: cmdlnopts.c:98
+#: cmdlnopts.c:97
 msgid "move focuser to absolute position, mm"
 msgstr ""

-#: cmdlnopts.c:99
+#: cmdlnopts.c:98
 msgid "move focuser to relative position, mm (only for standalone)"
 msgstr ""

-#: cmdlnopts.c:101
+#: cmdlnopts.c:100
 msgid "set wheel position"
 msgstr ""

-#: cmdlnopts.c:103
+#: cmdlnopts.c:102
 msgid "CMOS gain level"
 msgstr ""

-#: cmdlnopts.c:104
+#: cmdlnopts.c:103
 msgid "CMOS brightness level"
 msgstr ""

-#: cmdlnopts.c:106
+#: cmdlnopts.c:105
 msgid "logging file name (if run as server)"
 msgstr ""

-#: cmdlnopts.c:107
+#: cmdlnopts.c:106
 msgid "UNIX socket name (command socket)"
 msgstr ""

-#: cmdlnopts.c:108
+#: cmdlnopts.c:107
 msgid "local INET command socket port"
 msgstr ""

-#: cmdlnopts.c:109
+#: cmdlnopts.c:108
 msgid "INET image socket port"
 msgstr ""

-#: cmdlnopts.c:110
+#: cmdlnopts.c:109
 msgid "run as client"
 msgstr ""

-#: cmdlnopts.c:111
+#: cmdlnopts.c:110
 msgid "passive viewer (only get last images)"
 msgstr ""

-#: cmdlnopts.c:112
+#: cmdlnopts.c:111
 msgid "restart image server"
 msgstr ""

-#: cmdlnopts.c:113
+#: cmdlnopts.c:112
 msgid "network answer timeout (default: 0.1s)"
 msgstr ""

+#: cmdlnopts.c:113
+msgid ""
+"get base information about connected hardware (also increasing text messages "
+"level to 2)"
+msgstr ""
+
 #: cmdlnopts.c:115
 msgid "shared memory (with image data) key (default: 7777777)"
 msgstr ""
@@ -269,326 +272,352 @@ msgstr ""
 msgid "Display image in OpenGL window"
 msgstr ""

-#: ccdfunc.c:198
-msgid "Camera device unknown"
-msgstr ""
-
-#: ccdfunc.c:221
+#: ccdfunc.c:216
 #, c-format
 msgid "Can't save file with prefix %s"
 msgstr ""

-#: ccdfunc.c:269
+#: ccdfunc.c:276
 #, c-format
 msgid "File saved as '%s'"
 msgstr ""

-#: ccdfunc.c:278
+#: ccdfunc.c:285
 msgid "Error saving file"
 msgstr ""

-#: ccdfunc.c:333
+#: ccdfunc.c:340
 #, c-format
 msgid "Image stat:\n"
 msgstr ""

-#: ccdfunc.c:342
+#: ccdfunc.c:349
 msgid "Focuser device not pointed"
 msgstr ""

-#: ccdfunc.c:349
+#: ccdfunc.c:356
 msgid "No focusers found"
 msgstr ""

-#: ccdfunc.c:379
+#: ccdfunc.c:386
 #, c-format
 msgid "Found %d focusers, you point number %d"
 msgstr ""

-#: ccdfunc.c:383
+#: ccdfunc.c:390
 msgid "Can't set active focuser number"
 msgstr ""

-#: ccdfunc.c:397
+#: ccdfunc.c:404
 msgid "Can't get focuser limit positions"
 msgstr ""

-#: ccdfunc.c:404
+#: ccdfunc.c:411
 msgid "Can't get current focuser position"
 msgstr ""

-#: ccdfunc.c:418
+#: ccdfunc.c:425
 #, c-format
 msgid "Can't set position %g: out of limits [%g, %g]"
 msgstr ""

-#: ccdfunc.c:422
+#: ccdfunc.c:429
 msgid "Can't home focuser"
 msgstr ""

-#: ccdfunc.c:424
+#: ccdfunc.c:431
 #, c-format
 msgid "Can't set position %g"
 msgstr ""

-#: ccdfunc.c:430
+#: ccdfunc.c:439
 msgid "Wheel device not pointed"
 msgstr ""

-#: ccdfunc.c:437
+#: ccdfunc.c:446
 msgid "No wheels found"
 msgstr ""

-#: ccdfunc.c:467
+#: ccdfunc.c:476
 #, c-format
 msgid "Found %d wheels, you point number %d"
 msgstr ""

-#: ccdfunc.c:471
+#: ccdfunc.c:480
 msgid "Can't set active wheel number"
 msgstr ""

-#: ccdfunc.c:487
+#: ccdfunc.c:496
 msgid "Can't get max wheel position"
 msgstr ""

-#: ccdfunc.c:494
+#: ccdfunc.c:503
 #, c-format
 msgid "Wheel position should be from 0 to %d"
 msgstr ""

-#: ccdfunc.c:498
+#: ccdfunc.c:507
 #, c-format
 msgid "Can't set wheel position %d"
 msgstr ""

-#: ccdfunc.c:511
+#: ccdfunc.c:522
 msgid "Camera plugin have no capture polling funtion."
 msgstr ""

-#: ccdfunc.c:517
+#: ccdfunc.c:528
 #, c-format
 msgid "%.1f seconds till exposition ends"
 msgstr ""

-#: ccdfunc.c:532
+#: ccdfunc.c:543
 msgid "Camera device not pointed"
 msgstr ""

-#: ccdfunc.c:539 ccdfunc.c:540
+#: ccdfunc.c:550 ccdfunc.c:551
 msgid "No cameras found"
 msgstr ""

-#: ccdfunc.c:560
+#: ccdfunc.c:571
 msgid "Camera plugin have no model name getter"
 msgstr ""

-#: ccdfunc.c:571
+#: ccdfunc.c:582
 #, c-format
 msgid "Found %d cameras, you point number %d"
 msgstr ""

-#: ccdfunc.c:575
+#: ccdfunc.c:586
 msgid "Can't set active camera number"
 msgstr ""

-#: ccdfunc.c:581
+#: ccdfunc.c:592
 msgid "Camera plugin have no custom commands"
 msgstr ""

-#: ccdfunc.c:606
+#: ccdfunc.c:617
 msgid "Camera plugin have no fun speed setter"
 msgstr ""

-#: ccdfunc.c:609
+#: ccdfunc.c:620
 msgid "Can't set fan speed"
 msgstr ""

-#: ccdfunc.c:610
+#: ccdfunc.c:621
 #, c-format
 msgid "Set fan speed to %d"
 msgstr ""

-#: ccdfunc.c:615
+#: ccdfunc.c:626
 #, c-format
 msgid "Camera model: %s"
 msgstr ""

-#: ccdfunc.c:616
+#: ccdfunc.c:627
 #, c-format
 msgid "Pixel size: %g x %g"
 msgstr ""

-#: ccdfunc.c:622
+#: ccdfunc.c:633
 #, c-format
 msgid "Full array: %s"
 msgstr ""

-#: ccdfunc.c:625
+#: ccdfunc.c:636
 #, c-format
 msgid "Field of view: %s"
 msgstr ""

-#: ccdfunc.c:628
+#: ccdfunc.c:639
 #, c-format
 msgid "Current format: %s"
 msgstr ""

-#: ccdfunc.c:630
+#: ccdfunc.c:641
 msgid "Camera plugin have no temperature setter"
 msgstr ""

-#: ccdfunc.c:631
-#, c-format
-msgid "Can't set T to %g degC"
-msgstr ""
-
-#: ccdfunc.c:640
-#, c-format
-msgid "Shutter command: %s\n"
-msgstr ""
-
 #: ccdfunc.c:642
 #, c-format
+msgid "Can't set T to %g degC"
+msgstr ""
+
+#: ccdfunc.c:651
+#, c-format
+msgid "Shutter command: %s\n"
+msgstr ""
+
+#: ccdfunc.c:653
+#, c-format
 msgid "Can't run shutter command %s (unsupported?)"
 msgstr ""

-#: ccdfunc.c:645
+#: ccdfunc.c:656
 #, c-format
 msgid "Try to configure I/O port as %d"
 msgstr ""

-#: ccdfunc.c:647
+#: ccdfunc.c:658
 msgid "Can't configure (unsupported?)"
 msgstr ""

-#: ccdfunc.c:654
+#: ccdfunc.c:665
 msgid "Can't get IOport state (unsupported?)"
 msgstr ""

-#: ccdfunc.c:657
+#: ccdfunc.c:668
 #, c-format
 msgid "Try to write %d to I/O port"
 msgstr ""

-#: ccdfunc.c:659
+#: ccdfunc.c:670
 msgid "Can't set IOport"
 msgstr ""

-#: ccdfunc.c:666
+#: ccdfunc.c:677
 #, c-format
 msgid "Set gain to %g"
 msgstr ""

-#: ccdfunc.c:667
+#: ccdfunc.c:678
 #, c-format
 msgid "Can't set gain to %g"
 msgstr ""

-#: ccdfunc.c:672
+#: ccdfunc.c:683
 #, c-format
 msgid "Set brightness to %g"
 msgstr ""

-#: ccdfunc.c:673
+#: ccdfunc.c:684
 #, c-format
 msgid "Can't set brightness to %g"
 msgstr ""

-#: ccdfunc.c:679 server.c:284
+#: ccdfunc.c:690 server.c:330
 #, c-format
 msgid "Can't set binning %dx%d"
 msgstr ""

-#: ccdfunc.c:691 server.c:285
+#: ccdfunc.c:702 server.c:331
 msgid "Can't set given geometry"
 msgstr ""

-#: ccdfunc.c:695
+#: ccdfunc.c:706
 #, c-format
 msgid "Can't set %d flushes"
 msgstr ""

-#: ccdfunc.c:698
+#: ccdfunc.c:709
 msgid "Camera plugin have no exposition setter"
 msgstr ""

-#: ccdfunc.c:700
+#: ccdfunc.c:711
 #, c-format
 msgid "Can't set exposure time to %f seconds"
 msgstr ""

-#: ccdfunc.c:703
+#: ccdfunc.c:714
 msgid "Can't change frame type"
 msgstr ""

-#: ccdfunc.c:706
+#: ccdfunc.c:717
 msgid "Can't set bit depth"
 msgstr ""

-#: ccdfunc.c:708
+#: ccdfunc.c:719
 msgid "Can't set readout speed"
 msgstr ""

-#: ccdfunc.c:709
+#: ccdfunc.c:720
 #, c-format
 msgid "Readout mode: %s"
 msgstr ""

-#: ccdfunc.c:710
+#: ccdfunc.c:721
 msgid "Only show statistics"
 msgstr ""

-#: ccdfunc.c:713
+#: ccdfunc.c:724
 msgid "Can't get current binning"
 msgstr ""

-#: ccdfunc.c:738
+#: ccdfunc.c:749
 #, c-format
 msgid "Capture frame %d"
 msgstr ""

-#: ccdfunc.c:739 ccdfunc.c:816 server.c:153 server.c:154
+#: ccdfunc.c:750 ccdfunc.c:827 server.c:194 server.c:195
 msgid "Camera plugin have no function `start exposition`"
 msgstr ""

-#: ccdfunc.c:741 ccdfunc.c:818 server.c:159 server.c:160
+#: ccdfunc.c:752 ccdfunc.c:829 server.c:200 server.c:201
 msgid "Can't start exposition"
 msgstr ""

-#: ccdfunc.c:746
+#: ccdfunc.c:757
 msgid "Can't capture image"
 msgstr ""

-#: ccdfunc.c:749
+#: ccdfunc.c:760
 msgid "Read grabbed image"
 msgstr ""

-#: ccdfunc.c:751 ccdfunc.c:831 server.c:177 server.c:178
+#: ccdfunc.c:762 ccdfunc.c:842 server.c:218 server.c:219
 msgid "Camera plugin have no function `capture`"
 msgstr ""

-#: ccdfunc.c:753 ccdfunc.c:832
+#: ccdfunc.c:764 ccdfunc.c:843
 msgid "Can't grab image"
 msgstr ""

-#: ccdfunc.c:767 client.c:289
+#: ccdfunc.c:778 client.c:491
 #, c-format
 msgid "%d seconds till pause ends\n"
 msgstr ""

-#: ccdfunc.c:829
+#: ccdfunc.c:840
 msgid "Some error when capture"
 msgstr ""

-#: server.c:205
+#: server.c:247
 msgid "No camera device"
 msgstr ""

-#: client.c:275
+#: client.c:449
 msgid "Can't make exposition"
 msgstr ""

-#: client.c:305
+#: client.c:503
 msgid "Server timeout"
 msgstr ""
+
+#: imageview.c:51
+msgid "Already initialized!"
+msgstr ""
+
+#: imageview.c:312
+msgid "Can't init mutex!"
+msgstr ""
+
+#: imageview.c:425
+#, c-format
+msgid "Histogram conversion: %s"
+msgstr ""
+
+#: imageview.c:704
+msgid "Can't open OpenGL window, image preview will be inaccessible"
+msgstr ""
+
+#: imageview.c:746
+#, c-format
+msgid "Equalization of histogram: %s"
+msgstr ""
+
+#: imageview.c:746
+msgid "on"
+msgstr ""
+
+#: imageview.c:746
+msgid "off"
+msgstr ""
--- a/locale/ru/ru.po
+++ b/locale/ru/ru.po
@@ -7,7 +7,7 @@
 msgid   ""
 msgstr  "Project-Id-Version: PACKAGE VERSION\n"
        "Report-Msgid-Bugs-To: \n"
-        "POT-Creation-Date: 2026-04-18 15:55+0300\n"
+        "POT-Creation-Date: 2026-06-08 16:46+0300\n"
        "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
        "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
        "Language-Team: LANGUAGE <LL@li.org>\n"
@@ -16,217 +16,225 @@ msgstr  "Project-Id-Version: PACKAGE VERSION\n"
        "Content-Type: text/plain; charset=koi8-r\n"
        "Content-Transfer-Encoding: 8bit\n"

-#: ccdfunc.c:517
+#: ccdfunc.c:528
 #, c-format
 msgid   "%.1f seconds till exposition ends"
 msgstr  "%.1f ÓÅËÕÎÄ ÄÏ ÏËÏÎÞÁÎÉÑ ÜËÓÐÏÚÉÃÉÉ"

-#: ccdfunc.c:767 client.c:289
+#: ccdfunc.c:778 client.c:491
 #, c-format
 msgid   "%d seconds till pause ends\n"
 msgstr  "%d ÓÅËÕÎÄ ÄÏ ÏËÏÎÞÁÎÉÑ ÐÁÕÚÙ\n"

-#: cmdlnopts.c:104
+#: imageview.c:51
+msgid   "Already initialized!"
+msgstr  "õÖÅ ÉÎÉÃÉÁÌÉÚÉÒÏ×ÁÎÏ!"
+
+#: cmdlnopts.c:103
 msgid   "CMOS brightness level"
 msgstr  "ÕÒÏ×ÅÎØ ÑÒËÏÓÔÉ CMOS"

-#: cmdlnopts.c:103
+#: cmdlnopts.c:102
 msgid   "CMOS gain level"
 msgstr  "ÕÒÏ×ÅÎØ Gain CMOS"

-#: ccdfunc.c:532
+#: ccdfunc.c:543
 msgid   "Camera device not pointed"
 msgstr  "õÓÔÒÏÊÓÔ×Ï Ó×ÅÏÐÒÉÅÍÎÉËÁ ÎÅ ÐÏÄËÌÀÞÅÎÏ"

-#: ccdfunc.c:198
-msgid   "Camera device unknown"
-msgstr  "õÓÔÒÏÊÓÔ×Ï Ó×ÅÏÐÒÉÅÍÎÉËÁ ÎÅ ÏÐÏÚÎÁÎÏ"
-
-#: ccdfunc.c:615
+#: ccdfunc.c:626
 #, c-format
 msgid   "Camera model: %s"
 msgstr  "íÏÄÅÌØ Ó×ÅÔÏÐÒÉÅÍÎÉËÁ: %s"

-#: ccdfunc.c:511
+#: ccdfunc.c:522
 #, fuzzy
 msgid   "Camera plugin have no capture polling funtion."
 msgstr  "õ ÐÌÁÇÉÎÁ ËÁÍÅÒÙ ÎÅÔ ÏÓÏÂÙÈ ËÏÍÁÎÄ"

-#: ccdfunc.c:581
+#: ccdfunc.c:592
 msgid   "Camera plugin have no custom commands"
 msgstr  "õ ÐÌÁÇÉÎÁ ËÁÍÅÒÙ ÎÅÔ ÏÓÏÂÙÈ ËÏÍÁÎÄ"

-#: ccdfunc.c:698
+#: ccdfunc.c:709
 #, fuzzy
 msgid   "Camera plugin have no exposition setter"
 msgstr  "õ ÐÌÁÇÉÎÁ ËÁÍÅÒÙ ÎÅÔ ÏÓÏÂÙÈ ËÏÍÁÎÄ"

-#: ccdfunc.c:606
+#: ccdfunc.c:617
 #, fuzzy
 msgid   "Camera plugin have no fun speed setter"
 msgstr  "õ ÐÌÁÇÉÎÁ ËÁÍÅÒÙ ÎÅÔ ÏÓÏÂÙÈ ËÏÍÁÎÄ"

-#: ccdfunc.c:751 ccdfunc.c:831 server.c:177 server.c:178
+#: ccdfunc.c:762 ccdfunc.c:842 server.c:218 server.c:219
 #, fuzzy
 msgid   "Camera plugin have no function `capture`"
 msgstr  "õ ÐÌÁÇÉÎÁ ËÁÍÅÒÙ ÎÅÔ ÏÓÏÂÙÈ ËÏÍÁÎÄ"

-#: ccdfunc.c:739 ccdfunc.c:816 server.c:153 server.c:154
+#: ccdfunc.c:750 ccdfunc.c:827 server.c:194 server.c:195
 #, fuzzy
 msgid   "Camera plugin have no function `start exposition`"
 msgstr  "õ ÐÌÁÇÉÎÁ ËÁÍÅÒÙ ÎÅÔ ÏÓÏÂÙÈ ËÏÍÁÎÄ"

-#: ccdfunc.c:560
+#: ccdfunc.c:571
 #, fuzzy
 msgid   "Camera plugin have no model name getter"
 msgstr  "õ ÐÌÁÇÉÎÁ ËÁÍÅÒÙ ÎÅÔ ÏÓÏÂÙÈ ËÏÍÁÎÄ"

-#: ccdfunc.c:630
+#: ccdfunc.c:641
 #, fuzzy
 msgid   "Camera plugin have no temperature setter"
 msgstr  "õ ÐÌÁÇÉÎÁ ËÁÍÅÒÙ ÎÅÔ ÏÓÏÂÙÈ ËÏÍÁÎÄ"

-#: ccdfunc.c:746
+#: ccdfunc.c:757
 msgid   "Can't capture image"
 msgstr  "îÅ ÍÏÇÕ ÚÁÈ×ÁÔÉÔØ ÉÚÏÂÒÁÖÅÎÉÅ"

-#: ccdfunc.c:703
+#: ccdfunc.c:714
 msgid   "Can't change frame type"
 msgstr  "îÅ ÍÏÇÕ ÉÚÍÅÎÉÔØ ÔÉÐ ËÁÄÒÁ"

-#: ccdfunc.c:647
+#: ccdfunc.c:658
 msgid   "Can't configure (unsupported?)"
 msgstr  "îÅ ÍÏÇÕ ÓËÏÎÆÉÇÕÒÉÒÏ×ÁÔØ (ÏÐÃÉÑ ÎÅ ÐÏÄÄÅÒÖÉ×ÁÅÔÓÑ?)"

-#: ccdfunc.c:654
+#: ccdfunc.c:665
 msgid   "Can't get IOport state (unsupported?)"
 msgstr  "îÅ ÍÏÇÕ ÐÏÌÕÞÉÔØ ÓÏÓÔÏÑÎÉÅ ÐÏÒÔÁ I/O (ÎÅ ÐÏÄÄÅÒÖÉ×ÁÅÔÓÑ?)"

-#: ccdfunc.c:713
+#: ccdfunc.c:724
 msgid   "Can't get current binning"
 msgstr  "îÅ ÍÏÇÕ ÐÏÌÕÞÉÔØ ÔÅËÕÝÅÅ ÚÎÁÞÅÎÉÅ ÂÉÎÎÉÎÇÁ"

-#: ccdfunc.c:404
+#: ccdfunc.c:411
 msgid   "Can't get current focuser position"
 msgstr  "îÅ ÍÏÇÕ ÏÐÒÅÄÅÌÉÔØ ÔÅËÕÝÕÀ ÐÏÚÉÃÉÀ ÆÏËÕÓÅÒÁ"

-#: ccdfunc.c:397
+#: ccdfunc.c:404
 msgid   "Can't get focuser limit positions"
 msgstr  "îÅ ÍÏÇÕ ÏÐÒÅÄÅÌÉÔØ ÐÒÅÄÅÌØÎÕÀ ÐÏÚÉÃÉÀ ÆÏËÕÓÅÒÁ"

-#: ccdfunc.c:487
+#: ccdfunc.c:496
 msgid   "Can't get max wheel position"
 msgstr  "îÅ ÍÏÇÕ ÏÐÒÅÄÅÌÉÔØ ÐÒÅÄÅÌØÎÕÀ ÐÏÚÉÃÉÀ ËÏÌÅÓÁ"

-#: ccdfunc.c:753 ccdfunc.c:832
+#: ccdfunc.c:764 ccdfunc.c:843
 msgid   "Can't grab image"
 msgstr  "îÅ ÍÏÇÕ ÚÁÈ×ÁÔÉÔØ ÉÚÏÂÒÁÖÅÎÉÅ"

-#: ccdfunc.c:422
+#: ccdfunc.c:429
 msgid   "Can't home focuser"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÆÏËÕÓÅÒ × ÎÕÌØ"

-#: client.c:275
+#: imageview.c:312
+msgid   "Can't init mutex!"
+msgstr  "îÅ ÍÏÇÕ ÉÎÉÃÉÁÌÉÚÉÒÏ×ÁÔØ ÍØÀÔÅËÓ!"
+
+#: client.c:449
 msgid   "Can't make exposition"
 msgstr  "îÅ ÍÏÇÕ ×ÙÐÏÌÎÉÔØ ÜËÓÐÏÚÉÃÉÀ"

-#: ccdfunc.c:642
+#: imageview.c:704
+msgid   "Can't open OpenGL window, image preview will be inaccessible"
+msgstr  "îÅ ÍÏÇÕ ÏÔËÒÙÔØ ÏËÎÏ OpenGL, ÏÔÏÂÒÁÖÅÎÉÅ ÂÕÄÅÔ ÎÅÄÏÓÔÕÐÎÏ"
+
+#: ccdfunc.c:653
 #, c-format
 msgid   "Can't run shutter command %s (unsupported?)"
 msgstr  "îÅ ÍÏÇÕ ×ÙÐÏÌÎÉÔØ ËÏÍÁÎÄÕ ÚÁÔ×ÏÒÁ %s (ÎÅ ÐÏÄÄÅÒÖÉ×ÁÅÔÓÑ?)"

-#: ccdfunc.c:221
+#: ccdfunc.c:216
 #, c-format
 msgid   "Can't save file with prefix %s"
 msgstr  "îÅ ÍÏÇÕ ÓÏÈÒÁÎÉÔØ ÆÁÊÌ Ó ÐÒÅÆÉËÓÏÍ %s"

-#: ccdfunc.c:695
+#: ccdfunc.c:706
 #, c-format
 msgid   "Can't set %d flushes"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ %d ÓÂÒÏÓÏ×"

-#: ccdfunc.c:659
+#: ccdfunc.c:670
 msgid   "Can't set IOport"
 msgstr  "îÅ ÍÏÇÕ ÐÏÍÅÎÑÔØ ÚÎÁÞÅÎÉÑ ÐÏÒÔÁ I/O"

-#: ccdfunc.c:631
+#: ccdfunc.c:642
 #, c-format
 msgid   "Can't set T to %g degC"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÔÅÍÐÅÒÁÔÕÒÕ × %g ÇÒÁÄã"

-#: ccdfunc.c:575
+#: ccdfunc.c:586
 msgid   "Can't set active camera number"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÎÏÍÅÒ ÁËÔÉ×ÎÏÊ ËÁÍÅÒÙ"

-#: ccdfunc.c:383
+#: ccdfunc.c:390
 msgid   "Can't set active focuser number"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÎÏÍÅÒ ÁËÔÉ×ÎÏÇÏ ÆÏËÕÓÅÒÁ"

-#: ccdfunc.c:471
+#: ccdfunc.c:480
 msgid   "Can't set active wheel number"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÎÏÍÅÒ ÁËÔÉ×ÎÏÇÏ ËÏÌÅÓÁ"

-#: ccdfunc.c:679 server.c:284
+#: ccdfunc.c:690 server.c:330
 #, c-format
 msgid   "Can't set binning %dx%d"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÂÉÎÎÉÎÇ %dx%d"

-#: ccdfunc.c:706
+#: ccdfunc.c:717
 msgid   "Can't set bit depth"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÒÁÚÒÑÄÎÏÓÔØ áãð"

-#: ccdfunc.c:673
+#: ccdfunc.c:684
 #, c-format
 msgid   "Can't set brightness to %g"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÑÒËÏÓÔØ × %g"

-#: ccdfunc.c:700
+#: ccdfunc.c:711
 #, c-format
 msgid   "Can't set exposure time to %f seconds"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÜËÓÐÏÚÉÃÉÀ × %f ÓÅËÕÎÄ"

-#: ccdfunc.c:609
+#: ccdfunc.c:620
 msgid   "Can't set fan speed"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÓËÏÒÏÓÔØ ×ÅÎÔÉÌÑÔÏÒÏ×"

-#: ccdfunc.c:667
+#: ccdfunc.c:678
 #, c-format
 msgid   "Can't set gain to %g"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ Gain × %g"

-#: ccdfunc.c:691 server.c:285
+#: ccdfunc.c:702 server.c:331
 msgid   "Can't set given geometry"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÇÅÏÍÅÔÒÉÀ"

-#: ccdfunc.c:424
+#: ccdfunc.c:431
 #, c-format
 msgid   "Can't set position %g"
 msgstr  "îÅ ÍÏÇÕ ÉÚÍÅÎÉÔØ ÐÏÚÉÃÉÀ ÎÁ %g"

-#: ccdfunc.c:418
+#: ccdfunc.c:425
 #, c-format
 msgid   "Can't set position %g: out of limits [%g, %g]"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÐÏÚÉÃÉÀ %g: ×ÎÅ ÐÒÅÄÅÌÏ× [%g, %g]"

-#: ccdfunc.c:708
+#: ccdfunc.c:719
 msgid   "Can't set readout speed"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÓËÏÒÏÓÔØ ÓÞÉÔÙ×ÁÎÉÑ"

-#: ccdfunc.c:498
+#: ccdfunc.c:507
 #, c-format
 msgid   "Can't set wheel position %d"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÐÏÌÏÖÅÎÉÅ ËÏÌÅÓÁ %d"

-#: ccdfunc.c:741 ccdfunc.c:818 server.c:159 server.c:160
+#: ccdfunc.c:752 ccdfunc.c:829 server.c:200 server.c:201
 msgid   "Can't start exposition"
 msgstr  "îÅ ÍÏÇÕ ÎÁÞÁÔØ ÜËÓÐÏÚÉÃÉÀ"

-#: ccdfunc.c:738
+#: ccdfunc.c:749
 #, c-format
 msgid   "Capture frame %d"
 msgstr  "úÁÈ×ÁÔ ËÁÄÒÁ %d"

-#: ccdfunc.c:628
+#: ccdfunc.c:639
 #, c-format
 msgid   "Current format: %s"
 msgstr  "ôÅËÕÝÉÊ ÆÏÒÍÁÔ: %s"
@@ -235,157 +243,167 @@ msgstr  "
 msgid   "Display image in OpenGL window"
 msgstr  "ÏÔÏÂÒÁÖÅÎÉÅ ÉÚÏÂÒÁÖÅÎÉÑ × ÏËÎÅ OpenGL"

-#: ccdfunc.c:278
+#: imageview.c:746
+#, c-format
+msgid   "Equalization of histogram: %s"
+msgstr  "üË×ÁÌÉÚÁÃÉÑ ÇÉÓÔÏÇÒÁÍÍÙ: %s"
+
+#: ccdfunc.c:285
 msgid   "Error saving file"
 msgstr  "ïÛÉÂËÁ ÓÏÈÒÁÎÅÎÉÑ ÆÁÊÌÁ"

-#: ccdfunc.c:625
+#: ccdfunc.c:636
 #, c-format
 msgid   "Field of view: %s"
 msgstr  "ðÏÌÅ ÚÒÅÎÉÑ: %s"

-#: ccdfunc.c:269
+#: ccdfunc.c:276
 #, c-format
 msgid   "File saved as '%s'"
 msgstr  "æÁÊÌ ÓÏÈÒÁÎÅÎ ËÁË '%s'"

-#: ccdfunc.c:342
+#: ccdfunc.c:349
 msgid   "Focuser device not pointed"
 msgstr  "õÓÔÒÏÊÓÔ×Ï ÆÏËÕÓÅÒÁ ÎÅ ÕËÁÚÁÎÏ"

-#: ccdfunc.c:571
+#: ccdfunc.c:582
 #, c-format
 msgid   "Found %d cameras, you point number %d"
 msgstr  "ïÂÎÁÒÕÖÅÎÏ %d ËÁÍÅÒ, ×Ù ÕËÁÚÁÌÉ %d"

-#: ccdfunc.c:379
+#: ccdfunc.c:386
 #, c-format
 msgid   "Found %d focusers, you point number %d"
 msgstr  "ïÂÎÁÒÕÖÅÎÏ %d ÆÏËÕÓÅÒÏ×, ×Ù ÕËÁÚÁÌÉ %d"

-#: ccdfunc.c:467
+#: ccdfunc.c:476
 #, c-format
 msgid   "Found %d wheels, you point number %d"
 msgstr  "ïÂÎÁÒÕÖÅÎÏ %d ËÏÌÅÓ, ×Ù ÕËÁÚÁÌÉ %d"

-#: ccdfunc.c:622
+#: ccdfunc.c:633
 #, c-format
 msgid   "Full array: %s"
 msgstr  "ðÏÌÎÙÊ ÆÏÒÍÁÔ: %s"

-#: cmdlnopts.c:109
+#: imageview.c:425
+#, c-format
+msgid   "Histogram conversion: %s"
+msgstr  "ðÒÅÏÂÒÁÚÏ×ÁÎÉÅ ÇÉÓÔÏÇÒÁÍÍÙ: %s"
+
+#: cmdlnopts.c:108
 msgid   "INET image socket port"
 msgstr  "ÐÏÒÔ ÌÏËÁÌØÎÏÇÏ ÓÅÔÅ×ÏÇÏ ÓÏËÅÔÁ ÐÅÒÅÄÁÞÉ ÉÚÏÂÒÁÖÅÎÉÑ"

-#: ccdfunc.c:333
+#: ccdfunc.c:340
 #, c-format
 msgid   "Image stat:\n"
 msgstr  "óÔÁÔÉÓÔÉËÁ ÐÏ ÉÚÏÂÒÁÖÅÎÉÀ: \n"

-#: cmdlnopts.c:76
+#: cmdlnopts.c:75
 msgid   "N flushes before exposing (default: 1)"
 msgstr  "N ÚÁÓ×ÅÞÉ×ÁÎÉÊ ÐÅÒÅÄ ÜËÓÐÏÚÉÃÉÅÊ (ÐÏ ÕÍÏÌÞÁÎÉÀ: 1)"

-#: server.c:205
+#: server.c:247
 msgid   "No camera device"
 msgstr  "îÅ ÕËÁÚÁÎÏ ÕÓÔÒÏÊÓÔ×Ï ËÁÍÅÒÙ"

-#: ccdfunc.c:539 ccdfunc.c:540
+#: ccdfunc.c:550 ccdfunc.c:551
 msgid   "No cameras found"
 msgstr  "ëÁÍÅÒ ÎÅ ÏÂÎÁÒÕÖÅÎÏ"

-#: ccdfunc.c:349
+#: ccdfunc.c:356
 msgid   "No focusers found"
 msgstr  "æÏËÕÓÅÒÏ× ÎÅ ÏÂÎÁÒÕÖÅÎÏ"

-#: ccdfunc.c:437
+#: ccdfunc.c:446
 msgid   "No wheels found"
 msgstr  "ôÕÒÅÌÅÊ ÎÅ ÏÂÎÁÒÕÖÅÎÏ"

-#: ccdfunc.c:710
+#: ccdfunc.c:721
 msgid   "Only show statistics"
 msgstr  "ôÏÌØËÏ ÏÔÏÂÒÁÚÉÔØ ÓÔÁÔÉÓÔÉËÕ"

-#: ccdfunc.c:616
+#: ccdfunc.c:627
 #, c-format
 msgid   "Pixel size: %g x %g"
 msgstr  "òÁÚÍÅÒ ÐÉËÓÅÌÑ: %g x %g"

-#: ccdfunc.c:749
+#: ccdfunc.c:760
 msgid   "Read grabbed image"
 msgstr  "óÞÉÔÙ×ÁÎÉÅ ÉÚÏÂÒÁÖÅÎÉÑ"

-#: ccdfunc.c:709
+#: ccdfunc.c:720
 #, c-format
 msgid   "Readout mode: %s"
 msgstr  "òÅÖÉÍ ÓÞÉÔÙ×ÁÎÉÑ: %s"

-#: client.c:305
+#: client.c:503
 msgid   "Server timeout"
 msgstr  "ôÁÊÍÁÕÔ ÓÅÒ×ÅÒÁ"

-#: ccdfunc.c:672
+#: ccdfunc.c:683
 #, c-format
 msgid   "Set brightness to %g"
 msgstr  "õÓÔÁÎÏ×ÉÔØ ÑÒËÏÓÔØ × %g"

-#: ccdfunc.c:610
+#: ccdfunc.c:621
 #, c-format
 msgid   "Set fan speed to %d"
 msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÓËÏÒÏÓÔØ ×ÅÎÔÉÌÑÔÏÒÏ× × %d"

-#: ccdfunc.c:666
+#: ccdfunc.c:677
 #, c-format
 msgid   "Set gain to %g"
 msgstr  "õÓÔÁÎÏ×ÉÔØ Gain × %g"

-#: ccdfunc.c:640
+#: ccdfunc.c:651
 #, c-format
 msgid   "Shutter command: %s\n"
 msgstr  "ëÏÍÁÎÄÁ ÚÁÔ×ÏÒÁ: %s\n"

-#: ccdfunc.c:829
+#: ccdfunc.c:840
 msgid   "Some error when capture"
 msgstr  "ïÛÉÂËÁ ÐÒÉ ÚÁÈ×ÁÔÅ"

-#: ccdfunc.c:645
+#: ccdfunc.c:656
 #, c-format
 msgid   "Try to configure I/O port as %d"
 msgstr  "ðÏÐÙÔËÁ ÓËÏÎÆÉÇÕÒÉÒÏ×ÁÔØ ÐÏÒÔ I/O ËÁË %d"

-#: ccdfunc.c:657
+#: ccdfunc.c:668
 #, c-format
 msgid   "Try to write %d to I/O port"
 msgstr  "ðÏÐÙÔËÁ ÚÁÐÉÓÉ %d × ÐÏÒÔ I/O"

-#: cmdlnopts.c:107
+#: cmdlnopts.c:106
 msgid   "UNIX socket name (command socket)"
 msgstr  "ÉÍÑ UNIX-ÓÏËÅÔÁ"

-#: ccdfunc.c:430
+#: ccdfunc.c:439
 msgid   "Wheel device not pointed"
 msgstr  "õÓÔÒÏÊÓÔ×Ï ÔÕÒÅÌÉ ÎÅ ÕËÁÚÁÎÏ"

-#: ccdfunc.c:494
+#: ccdfunc.c:503
 #, c-format
 msgid   "Wheel position should be from 0 to %d"
 msgstr  "ðÏÚÉÃÉÑ ËÏÌÅÓÁ ÄÏÌÖÎÁ ÂÙÔØ ÏÔ 0 ÄÏ %d"

-#: cmdlnopts.c:83
+#: cmdlnopts.c:82
 msgid   "absolute (not divided by binning!) frame X0 coordinate (-1 - all "
        "with overscan)"
 msgstr  "ÁÂÓÏÌÀÔÎÁÑ (ÎÅ ÄÅÌÅÎÎÁÑ ÎÁ ÂÉÎÎÉÎÇ!) ËÏÏÒÄÉÎÁÔÁ X0 (-1 - ×ËÌÀÞÁÑ "
        "Ï×ÅÒÓËÁÎ)"

-#: cmdlnopts.c:85
+#: cmdlnopts.c:84
 msgid   "absolute frame X1 coordinate (-1 - all with overscan)"
 msgstr  "ÁÂÓÏÌÀÔÎÁÑ ËÏÏÒÄÉÎÁÔÁ X1 (-1 - ×ËÌÀÞÁÑ Ï×ÅÒÓËÁÎ)"

-#: cmdlnopts.c:84
+#: cmdlnopts.c:83
 msgid   "absolute frame Y0 coordinate (-1 - all with overscan)"
 msgstr  "ÁÂÓÏÌÀÔÎÁÑ ËÏÏÒÄÉÎÁÔÁ Y0 (-1 - ×ËÌÀÞÁÑ Ï×ÅÒÓËÁÎ)"

-#: cmdlnopts.c:86
+#: cmdlnopts.c:85
 msgid   "absolute frame Y1 coordinate (-1 - all with overscan)"
 msgstr  "ÁÂÓÏÌÀÔÎÁÑ ËÏÏÒÄÉÎÁÔÁ Y1 (-1 - ×ËÌÀÞÁÑ Ï×ÅÒÓËÁÎ)"

@@ -401,11 +419,11 @@ msgstr  "
 msgid   "camera device plugin (e.g. devfli.so)"
 msgstr  "ÐÌÁÇÉÎ ËÁÍÅÒÙ (ÎÁÐÒÉÍÅÒ, devfli.so)"

-#: cmdlnopts.c:82
+#: cmdlnopts.c:81
 msgid   "cancel current exposition"
 msgstr  "ÏÔÍÅÎÁ ÔÅËÕÝÅÊ ÜËÓÐÏÚÉÃÉÉ"

-#: cmdlnopts.c:89
+#: cmdlnopts.c:88
 msgid   "close shutter"
 msgstr  "ÚÁËÒÙÔØ ÚÁÔ×ÏÒ"

@@ -413,7 +431,7 @@ msgstr  "
 msgid   "common device plugin (e.g devfli.so)"
 msgstr  "ÏÂÝÉÊ ÐÌÁÇÉÎ ÄÌÑ ×ÓÅÈ ÕÓÔÒÏÊÓÔ× (ÎÁÐÒÉÍÅÒ, devfli.so)"

-#: cmdlnopts.c:96
+#: cmdlnopts.c:95
 msgid   "configure I/O port pins to given value (decimal number, pin1 is LSB, "
        "1 == output, 0 == input)"
 msgstr  "ÓËÏÎÆÉÇÕÒÉÒÏ×ÁÔØ ÐÏÒÔ I/O × ÚÁÄÁÎÎÏÅ ÓÏÓÔÏÑÎÉÅ (ÄÅÓÑÔÉÞÎÏÅ ÞÉÓÌÏ, "
@@ -444,11 +462,16 @@ msgid   "force using image through socket transition even if can use SHM"
 msgstr  "ÐÒÉÎÕÄÉÔÅÌØÎÏ ÂÒÁÔØ ÉÚÏÂÒÁÖÅÎÉÑ ÉÚ ÓÏËÅÔÁ ÄÁÖÅ ÅÓÌÉ ×ÏÚÍÏÖÎÏ "
        "ÐÏÌØÚÏ×ÁÔØÓÑ ÒÁÚÄÅÌÑÅÍÏÊ ÐÁÍÑÔØÀ"

-#: cmdlnopts.c:92
+#: cmdlnopts.c:113
+msgid   "get base information about connected hardware (also increasing text "
+        "messages level to 2)"
+msgstr  ""
+
+#: cmdlnopts.c:91
 msgid   "get value of I/O port pins"
 msgstr  "ÐÏÌÕÞÉÔØ ÚÎÁÞÅÎÉÅ ÐÏÒÔÁ I/O"

-#: cmdlnopts.c:77
+#: cmdlnopts.c:76
 msgid   "horizontal binning to N pixels"
 msgstr  "ÇÏÒÉÚÏÎÔÁÌØÎÙÊ ÂÉÎÎÉÎÇ × N ÐÉËÓÅÌÅÊ"

@@ -460,36 +483,36 @@ msgstr  "
 msgid   "list connected devices"
 msgstr  "ÓÐÉÓÏË ÐÏÄËÌÀÞÅÎÎÙÈ ÕÓÔÒÏÊÓÔ×"

-#: cmdlnopts.c:108
+#: cmdlnopts.c:107
 msgid   "local INET command socket port"
 msgstr  "ÐÏÒÔ ÌÏËÁÌØÎÏÇÏ ÓÅÔÅ×ÏÇÏ ÓÏËÅÔÁ"

-#: cmdlnopts.c:106
+#: cmdlnopts.c:105
 msgid   "logging file name (if run as server)"
 msgstr  "ÉÍÑ ÆÁÊÌÁ ÌÏÇÇÉÒÏ×ÁÎÉÑ (ÅÓÌÉ ÚÁÐÕÝÅÎ ÓÅÒ×ÅÒ)"

-#: cmdlnopts.c:80
+#: cmdlnopts.c:79
 msgid   "make pause for N seconds between expositions"
 msgstr  "ÐÁÕÚÁ × N ÓÅËÕÎÄ ÍÅÖÄÕ ÜËÓÐÏÚÉÃÉÑÍÉ"

-#: cmdlnopts.c:79
+#: cmdlnopts.c:78
 msgid   "make series of N frames"
 msgstr  "ÐÏÓÌÅÄÏ×ÁÔÅÌØÎÏÓÔØ ÉÚ N ËÁÄÒÏ×"

-#: cmdlnopts.c:98
+#: cmdlnopts.c:97
 msgid   "move focuser to absolute position, mm"
 msgstr  "ÐÅÒÅÍÅÓÔÉÔØ ÆÏËÕÓÅÒ × ÁÂÓÏÌÀÔÎÏÅ ÐÏÌÏÖÅÎÉÅ, ÍÍ"

-#: cmdlnopts.c:99
+#: cmdlnopts.c:98
 msgid   "move focuser to relative position, mm (only for standalone)"
 msgstr  "ÐÅÒÅÍÅÓÔÉÔØ ÆÏËÕÓÅÒ × ÏÔÎÏÓÉÔÅÌØÎÏÅ ÐÏÌÏÖÅÎÉÅ, ÍÍ (ÎÅ ÄÌÑ ÓÅÒ×ÅÒ/"
        "ËÌÉÅÎÔ)"

-#: cmdlnopts.c:93
+#: cmdlnopts.c:92
 msgid   "move stepper motor asynchronous"
 msgstr  "ÁÓÉÎÈÒÏÎÎÏÅ Ä×ÉÖÅÎÉÅ ÛÁÇÏ×ÏÇÏ Ä×ÉÇÁÔÅÌÑ"

-#: cmdlnopts.c:113
+#: cmdlnopts.c:112
 msgid   "network answer timeout (default: 0.1s)"
 msgstr  ""

@@ -513,7 +536,15 @@ msgstr  "
 msgid   "observing program name"
 msgstr  "ÎÁÚ×ÁÎÉÅ ÐÒÏÇÒÁÍÍÙ"

-#: cmdlnopts.c:88
+#: imageview.c:746
+msgid   "off"
+msgstr  "×ÙËÌ"
+
+#: imageview.c:746
+msgid   "on"
+msgstr  "×ËÌ"
+
+#: cmdlnopts.c:87
 msgid   "open shutter"
 msgstr  "ÏÔËÒÙÔØ ÚÁÔ×ÏÒ"

@@ -521,7 +552,7 @@ msgstr  "
 msgid   "output file name"
 msgstr  "ÉÍÑ ÆÁÊÌÁ"

-#: cmdlnopts.c:111
+#: cmdlnopts.c:110
 msgid   "passive viewer (only get last images)"
 msgstr  "ÐÁÓÓÉ×ÎÙÊ ÐÒÏÓÍÏÔÒ (ÔÏÌØËÏ ÐÏÓÌÅÄÎÉÅ ËÁÄÒÙ)"

@@ -529,7 +560,7 @@ msgstr  "
 msgid   "program author"
 msgstr  "Á×ÔÏÒ ÐÒÏÇÒÁÍÍÙ"

-#: cmdlnopts.c:112
+#: cmdlnopts.c:111
 msgid   "restart image server"
 msgstr  "ÐÅÒÅÚÁÐÕÓË ÓÅÒ×ÅÒÁ"

@@ -537,15 +568,15 @@ msgstr  "
 msgid   "rewrite output file if exists"
 msgstr  "ÐÅÒÅÚÁÐÉÓØ ×ÙÈÏÄÎÏÇÏ ÆÁÊÌÁ"

-#: cmdlnopts.c:110
+#: cmdlnopts.c:109
 msgid   "run as client"
 msgstr  "ÚÁÐÕÓÔÉÔØ ËÌÉÅÎÔ"

-#: cmdlnopts.c:91
+#: cmdlnopts.c:90
 msgid   "run exposition on HIGH @ pin5 I/O port"
 msgstr  "ÚÁÐÕÓË ÜËÓÐÏÚÉÃÉÉ ÐÏ ÷ùóïëïíõ ÓÉÇÎÁÌÕ ÎÁ ËÏÎÔÁËÔÅ 5 ÐÏÒÔÁ I/O"

-#: cmdlnopts.c:90
+#: cmdlnopts.c:89
 msgid   "run exposition on LOW @ pin5 I/O port"
 msgstr  "ÚÁÐÕÓË ÜËÓÐÏÚÉÃÉÉ ÐÏ îéúëïíõ ÓÉÇÎÁÌÕ ÎÁ ËÏÎÔÁËÔÅ 5 ÐÏÒÔÁ I/O"

@@ -557,11 +588,11 @@ msgstr  "8-
 msgid   "set CCD temperature to given value (degr C)"
 msgstr  "ÕÓÔÁÎÏ×ÉÔØ ÔÅÍÐÅÒÁÔÕÒÕ Ó×ÅÔÏÐÒÉÅÍÎÉËÁ (ÇÒÁÄã)"

-#: cmdlnopts.c:95
+#: cmdlnopts.c:94
 msgid   "set I/O port pins to given value (decimal number, pin1 is LSB)"
 msgstr  "ÕÓÔÁÎÏ×ÉÔØ ÐÏÒÔ I/O (ÄÅÓÑÔÉÞÎÏÅ ÞÉÓÌÏ, pin1 - ÍÌÁÄÛÉÊ ÂÉÔ)"

-#: cmdlnopts.c:81
+#: cmdlnopts.c:80
 msgid   "set exposure time to given value (seconds!)"
 msgstr  "ÕÓÔÁÎÏ×ÉÔØ ×ÒÅÍÑ ÜËÓÐÏÚÉÃÉÉ (ÓÅËÕÎÄÙ!)"

@@ -569,7 +600,7 @@ msgstr  "
 msgid   "set fan speed (0 - off, 1 - low, 2 - high)"
 msgstr  "ÕÓÔÁÎÏ×ÉÔØ ÓËÏÒÏÓÔØ ×ÅÎÔÉÌÑÔÏÒÁ (0 - ×ÙËÌ, 1 - ÎÉÚËÁÑ, 2 - ×ÙÓÏËÁÑ)"

-#: cmdlnopts.c:101
+#: cmdlnopts.c:100
 msgid   "set wheel position"
 msgstr  "ÕÓÔÁÎÏ×ÉÔØ ÐÏÌÏÖÅÎÉÅ ËÏÌÅÓÁ"

@@ -586,40 +617,21 @@ msgid   "start (!=0) or stop(==0) infinity capturing loop"
 msgstr  "ÎÁÞÁÔØ (!=0) ÉÌÉ ÚÁËÏÎÞÉÔØ (==0) ÂÅÓËÏÎÅÞÎÙÊ ÃÉËÌ ÚÁÈ×ÁÔÁ ÉÚÏÂÒÁÖÅÎÉÊ"

 #: cmdlnopts.c:59
-msgid   "verbose level (-V - messages, -VV - debug, -VVV - all shit)"
+#, fuzzy
+msgid   "verbose level (-V - main messages, -VV - secondary messages, -VVV - "
+        "debug)"
 msgstr  "ÕÒÏ×ÅÎØ ÂÏÌÔÌÉ×ÏÓÔÉ (-V - ÓÏÏÂÝÅÎÉÑ, -VV - ÏÔÌÁÄËÁ, -VVV - ×ÓÅ)"

-#: cmdlnopts.c:78
+#: cmdlnopts.c:77
 msgid   "vertical binning to N pixels"
 msgstr  "×ÅÒÔÉËÁÌØÎÙÊ ÂÉÎÎÉÎÇ × N ÐÉËÓÅÌÅÊ"

-#: cmdlnopts.c:74
-msgid   "wait while exposition ends"
-msgstr  "ÖÄÁÔØ, ÐÏËÁ ÎÅ ËÏÎÞÉÔÓÑ ÜËÓÐÏÚÉÃÉÑ"
-
 #: cmdlnopts.c:52
 msgid   "wheel device plugin (e.g. devdummy.so)"
 msgstr  "ÐÌÁÇÉÎ ÕÓÔÒÏÊÓÔ×Á ÔÕÒÅÌÉ (ÎÁÐÒÉÍÅÒ, devdummy.so)"

-#~ msgid        "Already initialized!"
-#~ msgstr       "õÖÅ ÉÎÉÃÉÁÌÉÚÉÒÏ×ÁÎÏ!"
+#~ msgid        "Camera device unknown"
+#~ msgstr       "õÓÔÒÏÊÓÔ×Ï Ó×ÅÏÐÒÉÅÍÎÉËÁ ÎÅ ÏÐÏÚÎÁÎÏ"

-#~ msgid        "Can't init mutex!"
-#~ msgstr       "îÅ ÍÏÇÕ ÉÎÉÃÉÁÌÉÚÉÒÏ×ÁÔØ ÍØÀÔÅËÓ!"
-
-#~ msgid        "Can't open OpenGL window, image preview will be inaccessible"
-#~ msgstr       "îÅ ÍÏÇÕ ÏÔËÒÙÔØ ÏËÎÏ OpenGL, ÏÔÏÂÒÁÖÅÎÉÅ ÂÕÄÅÔ ÎÅÄÏÓÔÕÐÎÏ"
-
-#, c-format
-#~ msgid        "Equalization of histogram: %s"
-#~ msgstr       "üË×ÁÌÉÚÁÃÉÑ ÇÉÓÔÏÇÒÁÍÍÙ: %s"
-
-#, c-format
-#~ msgid        "Histogram conversion: %s"
-#~ msgstr       "ðÒÅÏÂÒÁÚÏ×ÁÎÉÅ ÇÉÓÔÏÇÒÁÍÍÙ: %s"
-
-#~ msgid        "off"
-#~ msgstr       "×ÙËÌ"
-
-#~ msgid        "on"
-#~ msgstr       "×ËÌ"
+#~ msgid        "wait while exposition ends"
+#~ msgstr       "ÖÄÁÔØ, ÐÏËÁ ÎÅ ËÏÎÞÉÔÓÑ ÜËÓÐÏÚÉÃÉÑ"
--- a/locale/ru/ru.po.bkp
+++ b/locale/ru/ru.po.bkp
@@ -1,586 +0,0 @@
-# SOME DESCRIPTIVE TITLE.
-# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
-# This file is distributed under the same license as the PACKAGE package.
-# FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
-#
-#, fuzzy
-msgid   ""
-msgstr  "Project-Id-Version: PACKAGE VERSION\n"
-        "Report-Msgid-Bugs-To: \n"
-        "POT-Creation-Date: 2022-04-18 16:50+0300\n"
-        "PO-Revision-Date: YEAR-MO-DA HO:MI+ZONE\n"
-        "Last-Translator: FULL NAME <EMAIL@ADDRESS>\n"
-        "Language-Team: LANGUAGE <LL@li.org>\n"
-        "Language: \n"
-        "MIME-Version: 1.0\n"
-        "Content-Type: text/plain; charset=koi8-r\n"
-        "Content-Transfer-Encoding: 8bit\n"
-
-#: ccdfunc.c:570
-#, c-format
-msgid   "%.1f seconds till exposition ends"
-msgstr  "%.1f ÓÅËÕÎÄ ÄÏ ÏËÏÎÞÁÎÉÑ ÜËÓÐÏÚÉÃÉÉ"
-
-#. %d ÓÅËÕÎÄ ÄÏ ÏËÏÎÞÁÎÉÑ ÐÁÕÚÙ\n
-#: ccdfunc.c:805 client.c:260
-#, c-format
-msgid   "%d seconds till pause ends\n"
-msgstr  "%d ÓÅËÕÎÄ ÄÏ ÏËÏÎÞÁÎÉÑ ÐÁÕÚÙ\n"
-
-#: imageview.c:282
-msgid   "Already initialized!"
-msgstr  "õÖÅ ÉÎÉÃÉÁÌÉÚÉÒÏ×ÁÎÏ!"
-
-#: cmdlnopts.c:97
-msgid   "CMOS brightness level"
-msgstr  "ÕÒÏ×ÅÎØ ÑÒËÏÓÔÉ CMOS"
-
-#: cmdlnopts.c:96
-msgid   "CMOS gain level"
-msgstr  "ÕÒÏ×ÅÎØ Gain CMOS"
-
-#: ccdfunc.c:584
-msgid   "Camera device not pointed"
-msgstr  "õÓÔÒÏÊÓÔ×Ï Ó×ÅÏÐÒÉÅÍÎÉËÁ ÎÅ ÐÏÄËÌÀÞÅÎÏ"
-
-#: ccdfunc.c:155
-msgid   "Camera device unknown"
-msgstr  "õÓÔÒÏÊÓÔ×Ï Ó×ÅÏÐÒÉÅÍÎÉËÁ ÎÅ ÏÐÏÚÎÁÎÏ"
-
-#: ccdfunc.c:643
-#, c-format
-msgid   "Camera model: %s"
-msgstr  "íÏÄÅÌØ Ó×ÅÔÏÐÒÉÅÍÎÉËÁ: %s"
-
-#: ccdfunc.c:762 ccdfunc.c:784 ccdfunc.c:825
-msgid   "Can't capture image"
-msgstr  "îÅ ÍÏÇÕ ÚÁÈ×ÁÔÉÔØ ÉÚÏÂÒÁÖÅÎÉÅ"
-
-#: ccdfunc.c:726
-msgid   "Can't change frame type"
-msgstr  "îÅ ÍÏÇÕ ÉÚÍÅÎÉÔØ ÔÉÐ ËÁÄÒÁ"
-
-#: ccdfunc.c:671
-msgid   "Can't configure (unsupported?)"
-msgstr  "îÅ ÍÏÇÕ ÓËÏÎÆÉÇÕÒÉÒÏ×ÁÔØ (ÏÐÃÉÑ ÎÅ ÐÏÄÄÅÒÖÉ×ÁÅÔÓÑ?)"
-
-#: ccdfunc.c:86
-#, c-format
-msgid   "Can't find camera in plugin %s: %s"
-msgstr  "îÅ ÍÏÇÕ ÎÁÊÔÉ ÐÌÁÇÉÎ ËÁÍÅÒÙ %s: %s"
-
-#: ccdfunc.c:75
-#, c-format
-msgid   "Can't find focuser in plugin %s: %s"
-msgstr  "îÅ ÍÏÇÕ ÎÁÊÔÉ ÐÌÁÇÉÎ ÆÏËÕÓÅÒÁ %s: %s"
-
-#: ccdfunc.c:63
-#, c-format
-msgid   "Can't find plugin %s: %s"
-msgstr  "îÅ ÍÏÇÕ ÎÁÊÔÉ ÐÌÁÇÉÎ %s: %s"
-
-#: ccdfunc.c:97
-#, c-format
-msgid   "Can't find wheel in plugin %s: %s"
-msgstr  "îÅ ÍÏÇÕ ÎÁÊÔÉ ÐÌÁÇÉÎ ÔÕÒÅÌÉ %s: %s"
-
-#: ccdfunc.c:677
-msgid   "Can't get IOport state (unsupported?)"
-msgstr  "îÅ ÍÏÇÕ ÐÏÌÕÞÉÔØ ÓÏÓÔÏÑÎÉÅ ÐÏÒÔÁ I/O (ÎÅ ÐÏÄÄÅÒÖÉ×ÁÅÔÓÑ?)"
-
-#. GET binning should be AFTER setgeometry!
-#: ccdfunc.c:735
-msgid   "Can't get current binning"
-msgstr  "îÅ ÍÏÇÕ ÐÏÌÕÞÉÔØ ÔÅËÕÝÅÅ ÚÎÁÞÅÎÉÅ ÂÉÎÎÉÎÇÁ"
-
-#: ccdfunc.c:455
-msgid   "Can't get current focuser position"
-msgstr  "îÅ ÍÏÇÕ ÏÐÒÅÄÅÌÉÔØ ÔÅËÕÝÕÀ ÐÏÚÉÃÉÀ ÆÏËÕÓÅÒÁ"
-
-#: ccdfunc.c:448
-msgid   "Can't get focuser limit positions"
-msgstr  "îÅ ÍÏÇÕ ÏÐÒÅÄÅÌÉÔØ ÐÒÅÄÅÌØÎÕÀ ÐÏÚÉÃÉÀ ÆÏËÕÓÅÒÁ"
-
-#: ccdfunc.c:542
-msgid   "Can't get max wheel position"
-msgstr  "îÅ ÍÏÇÕ ÏÐÒÅÄÅÌÉÔØ ÐÒÅÄÅÌØÎÕÀ ÐÏÚÉÃÉÀ ËÏÌÅÓÁ"
-
-#: ccdfunc.c:768 ccdfunc.c:788 ccdfunc.c:829
-msgid   "Can't grab image"
-msgstr  "îÅ ÍÏÇÕ ÚÁÈ×ÁÔÉÔØ ÉÚÏÂÒÁÖÅÎÉÅ"
-
-#: ccdfunc.c:473
-msgid   "Can't home focuser"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÆÏËÕÓÅÒ × ÎÕÌØ"
-
-#: imageview.c:264
-msgid   "Can't init mutex!"
-msgstr  "îÅ ÍÏÇÕ ÉÎÉÃÉÁÌÉÚÉÒÏ×ÁÔØ ÍØÀÔÅËÓ!"
-
-#: client.c:247
-msgid   "Can't make exposition"
-msgstr  "îÅ ÍÏÇÕ ×ÙÐÏÌÎÉÔØ ÜËÓÐÏÚÉÃÉÀ"
-
-#: ccdfunc.c:748
-msgid   "Can't open OpenGL window, image preview will be inaccessible"
-msgstr  "îÅ ÍÏÇÕ ÏÔËÒÙÔØ ÏËÎÏ OpenGL, ÏÔÏÂÒÁÖÅÎÉÅ ÂÕÄÅÔ ÎÅÄÏÓÔÕÐÎÏ"
-
-#: ccdfunc.c:665
-#, c-format
-msgid   "Can't run shutter command %s (unsupported?)"
-msgstr  "îÅ ÍÏÇÕ ×ÙÐÏÌÎÉÔØ ËÏÍÁÎÄÕ ÚÁÔ×ÏÒÁ %s (ÎÅ ÐÏÄÄÅÒÖÉ×ÁÅÔÓÑ?)"
-
-#. îÅ ÍÏÇÕ ÓÏÈÒÁÎÉÔØ ÆÁÊÌ
-#: ccdfunc.c:180
-#, c-format
-msgid   "Can't save file with prefix %s"
-msgstr  "îÅ ÍÏÇÕ ÓÏÈÒÁÎÉÔØ ÆÁÊÌ Ó ÐÒÅÆÉËÓÏÍ %s"
-
-#: ccdfunc.c:719
-#, c-format
-msgid   "Can't set %d flushes"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ %d ÓÂÒÏÓÏ×"
-
-#: ccdfunc.c:683
-msgid   "Can't set IOport"
-msgstr  "îÅ ÍÏÇÕ ÐÏÍÅÎÑÔØ ÚÎÁÞÅÎÉÑ ÐÏÒÔÁ I/O"
-
-#: ccdfunc.c:656
-#, c-format
-msgid   "Can't set T to %g degC"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÔÅÍÐÅÒÁÔÕÒÕ × %g ÇÒÁÄã"
-
-#: ccdfunc.c:631
-msgid   "Can't set active camera number"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÎÏÍÅÒ ÁËÔÉ×ÎÏÊ ËÁÍÅÒÙ"
-
-#: ccdfunc.c:434
-msgid   "Can't set active focuser number"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÎÏÍÅÒ ÁËÔÉ×ÎÏÇÏ ÆÏËÕÓÅÒÁ"
-
-#: ccdfunc.c:526
-msgid   "Can't set active wheel number"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÎÏÍÅÒ ÁËÔÉ×ÎÏÇÏ ËÏÌÅÓÁ"
-
-#: ccdfunc.c:705 server.c:223
-#, c-format
-msgid   "Can't set binning %dx%d"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÂÉÎÎÉÎÇ %dx%d"
-
-#: ccdfunc.c:729
-msgid   "Can't set bit depth"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÒÁÚÒÑÄÎÏÓÔØ áãð"
-
-#: ccdfunc.c:697
-#, c-format
-msgid   "Can't set brightness to %g"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÑÒËÏÓÔØ × %g"
-
-#: ccdfunc.c:723
-#, c-format
-msgid   "Can't set exposure time to %f seconds"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÜËÓÐÏÚÉÃÉÀ × %f ÓÅËÕÎÄ"
-
-#: ccdfunc.c:637
-msgid   "Can't set fan speed"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÓËÏÒÏÓÔØ ×ÅÎÔÉÌÑÔÏÒÏ×"
-
-#: ccdfunc.c:691
-#, c-format
-msgid   "Can't set gain to %g"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ Gain × %g"
-
-#: ccdfunc.c:715 server.c:224
-msgid   "Can't set given geometry"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÇÅÏÍÅÔÒÉÀ"
-
-#: ccdfunc.c:475
-#, c-format
-msgid   "Can't set position %g"
-msgstr  "îÅ ÍÏÇÕ ÉÚÍÅÎÉÔØ ÐÏÚÉÃÉÀ ÎÁ %g"
-
-#: ccdfunc.c:469
-#, c-format
-msgid   "Can't set position %g: out of limits [%g, %g]"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÐÏÚÉÃÉÀ %g: ×ÎÅ ÐÒÅÄÅÌÏ× [%g, %g]"
-
-#: ccdfunc.c:731
-msgid   "Can't set readout speed"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÓËÏÒÏÓÔØ ÓÞÉÔÙ×ÁÎÉÑ"
-
-#: ccdfunc.c:553
-#, c-format
-msgid   "Can't set wheel position %d"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÐÏÌÏÖÅÎÉÅ ËÏÌÅÓÁ %d"
-
-#: ccdfunc.c:758 server.c:121
-msgid   "Can't start exposition"
-msgstr  "îÅ ÍÏÇÕ ÎÁÞÁÔØ ÜËÓÐÏÚÉÃÉÀ"
-
-#. úÁÈ×ÁÔ ËÁÄÒÁ %d\n
-#: ccdfunc.c:756
-#, c-format
-msgid   "Capture frame %d"
-msgstr  "úÁÈ×ÁÔ ËÁÄÒÁ %d"
-
-#: cmdlnopts.c:107
-msgid   "Display image in OpenGL window"
-msgstr  "ïÔÏÂÒÁÖÅÎÉÅ ÉÚÏÂÒÁÖÅÎÉÑ × ÏËÎÅ OpenGL"
-
-#: imageview.c:517
-#, c-format
-msgid   "Equalization of histogram: %s"
-msgstr  "üË×ÁÌÉÚÁÃÉÑ ÇÉÓÔÏÇÒÁÍÍÙ: %s"
-
-#: ccdfunc.c:343
-msgid   "Error saving file"
-msgstr  "ïÛÉÂËÁ ÓÏÈÒÁÎÅÎÉÑ ÆÁÊÌÁ"
-
-#: ccdfunc.c:653
-#, c-format
-msgid   "Field of view: %s"
-msgstr  "ðÏÌÅ ÚÒÅÎÉÑ: %s"
-
-#: ccdfunc.c:334
-#, c-format
-msgid   "File saved as '%s'"
-msgstr  "æÁÊÌ ÓÏÈÒÁÎÅÎ ËÁË '%s'"
-
-#: ccdfunc.c:391
-msgid   "Focuser device not pointed"
-msgstr  "õÓÔÒÏÊÓÔ×Ï ÆÏËÕÓÅÒÁ ÎÅ ÕËÁÚÁÎÏ"
-
-#: ccdfunc.c:627
-#, c-format
-msgid   "Found %d cameras, you point number %d"
-msgstr  "ïÂÎÁÒÕÖÅÎÏ %d ËÁÍÅÒ, ×Ù ÕËÁÚÁÌÉ %d"
-
-#: ccdfunc.c:430
-#, c-format
-msgid   "Found %d focusers, you point number %d"
-msgstr  "ïÂÎÁÒÕÖÅÎÏ %d ÆÏËÕÓÅÒÏ×, ×Ù ÕËÁÚÁÌÉ %d"
-
-#: ccdfunc.c:522
-#, c-format
-msgid   "Found %d wheels, you point number %d"
-msgstr  "ïÂÎÁÒÕÖÅÎÏ %d ËÏÌÅÓ, ×Ù ÕËÁÚÁÌÉ %d"
-
-#: ccdfunc.c:650
-#, c-format
-msgid   "Full array: %s"
-msgstr  "ðÏÌÎÙÊ ÆÏÒÍÁÔ: %s"
-
-#: imageview.c:408
-#, c-format
-msgid   "Histogram conversion: %s"
-msgstr  "ðÒÅÏÂÒÁÚÏ×ÁÎÉÅ ÇÉÓÔÏÇÒÁÍÍÙ: %s"
-
-#: ccdfunc.c:383
-#, c-format
-msgid   "Image stat:\n"
-msgstr  "óÔÁÔÉÓÔÉËÁ ÐÏ ÉÚÏÂÒÁÖÅÎÉÀ: \n"
-
-#: cmdlnopts.c:69
-msgid   "N flushes before exposing (default: 1)"
-msgstr  "N ÚÁÓ×ÅÞÉ×ÁÎÉÊ ÐÅÒÅÄ ÜËÓÐÏÚÉÃÉÅÊ (ÐÏ ÕÍÏÌÞÁÎÉÀ: 1)"
-
-#: ccdfunc.c:161
-msgid   "Neither filename nor filename prefix pointed!"
-msgstr  "îÉ ÉÍÑ ÆÁÊÌÁ, ÎÉ ÐÒÅÆÉËÓ ÎÅ ÕËÁÚÁÎÙ!"
-
-#: server.c:163
-msgid   "No camera device"
-msgstr  "îÅ ÕËÁÚÁÎÏ ÕÓÔÒÏÊÓÔ×Ï ËÁÍÅÒÙ"
-
-#: ccdfunc.c:591 ccdfunc.c:592
-msgid   "No cameras found"
-msgstr  "ëÁÍÅÒ ÎÅ ÏÂÎÁÒÕÖÅÎÏ"
-
-#: ccdfunc.c:398
-msgid   "No focusers found"
-msgstr  "æÏËÕÓÅÒÏ× ÎÅ ÏÂÎÁÒÕÖÅÎÏ"
-
-#: ccdfunc.c:490
-msgid   "No wheels found"
-msgstr  "ôÕÒÅÌÅÊ ÎÅ ÏÂÎÁÒÕÖÅÎÏ"
-
-#: ccdfunc.c:733
-msgid   "Only show statistics"
-msgstr  "ôÏÌØËÏ ÏÔÏÂÒÁÚÉÔØ ÓÔÁÔÉÓÔÉËÕ"
-
-#: cmdlnopts.c:103
-msgid   "PID file (default: "
-msgstr  "PID-ÆÁÊÌ (ÐÏ ÕÍÏÌÞÁÎÉÀ: "
-
-#: ccdfunc.c:644
-#, c-format
-msgid   "Pixel size: %g x %g"
-msgstr  "òÁÚÍÅÒ ÐÉËÓÅÌÑ: %g x %g"
-
-#: ccdfunc.c:765
-msgid   "Read grabbed image"
-msgstr  "óÞÉÔÙ×ÁÎÉÅ ÉÚÏÂÒÁÖÅÎÉÑ"
-
-#: ccdfunc.c:732
-#, c-format
-msgid   "Readout mode: %s"
-msgstr  "òÅÖÉÍ ÓÞÉÔÙ×ÁÎÉÑ: %s"
-
-#: client.c:276
-msgid   "Server timeout"
-msgstr  "ôÁÊÍÁÕÔ ÓÅÒ×ÅÒÁ"
-
-#: ccdfunc.c:696
-#, c-format
-msgid   "Set brightness to %g"
-msgstr  "õÓÔÁÎÏ×ÉÔØ ÑÒËÏÓÔØ × %g"
-
-#: ccdfunc.c:638
-#, c-format
-msgid   "Set fan speed to %d"
-msgstr  "îÅ ÍÏÇÕ ÕÓÔÁÎÏ×ÉÔØ ÓËÏÒÏÓÔØ ×ÅÎÔÉÌÑÔÏÒÏ× × %d"
-
-#: ccdfunc.c:690
-#, c-format
-msgid   "Set gain to %g"
-msgstr  "õÓÔÁÎÏ×ÉÔØ Gain × %g"
-
-#: ccdfunc.c:663
-#, c-format
-msgid   "Shutter command: %s\n"
-msgstr  "ëÏÍÁÎÄÁ ÚÁÔ×ÏÒÁ: %s\n"
-
-#. "ðÏÐÙÔËÁ ÓËÏÎÆÉÇÕÒÉÒÏ×ÁÔØ ÐÏÒÔ I/O ËÁË %d\n"
-#: ccdfunc.c:669
-#, c-format
-msgid   "Try to configure I/O port as %d"
-msgstr  "ðÏÐÙÔËÁ ÓËÏÎÆÉÇÕÒÉÒÏ×ÁÔØ ÐÏÒÔ I/O ËÁË %d"
-
-#. "ðÏÐÙÔËÁ ÚÁÐÉÓÉ %d × ÐÏÒÔ I/O\n"
-#: ccdfunc.c:681
-#, c-format
-msgid   "Try to write %d to I/O port"
-msgstr  "ðÏÐÙÔËÁ ÚÁÐÉÓÉ %d × ÐÏÒÔ I/O"
-
-#: cmdlnopts.c:100
-msgid   "UNIX socket name"
-msgstr  "éÍÑ UNIX-ÓÏËÅÔÁ"
-
-#: ccdfunc.c:483
-msgid   "Wheel device not pointed"
-msgstr  "õÓÔÒÏÊÓÔ×Ï ÔÕÒÅÌÉ ÎÅ ÕËÁÚÁÎÏ"
-
-#: ccdfunc.c:549
-#, c-format
-msgid   "Wheel position should be from 0 to %d"
-msgstr  "ðÏÚÉÃÉÑ ËÏÌÅÓÁ ÄÏÌÖÎÁ ÂÙÔØ ÏÔ 0 ÄÏ %d"
-
-#: cmdlnopts.c:76
-msgid   "absolute (not divided by binning!) frame X0 coordinate (-1 - all "
-        "with overscan)"
-msgstr  "ÁÂÓÏÌÀÔÎÁÑ (ÎÅ ÄÅÌÅÎÎÁÑ ÎÁ ÂÉÎÎÉÎÇ!) ËÏÏÒÄÉÎÁÔÁ X0 (-1 - ×ËÌÀÞÁÑ Ï×ÅÒÓËÁÎ)"
-
-#: cmdlnopts.c:78
-msgid   "absolute frame X1 coordinate (-1 - all with overscan)"
-msgstr  "ÁÂÓÏÌÀÔÎÁÑ ËÏÏÒÄÉÎÁÔÁ X1 (-1 - ×ËÌÀÞÁÑ Ï×ÅÒÓËÁÎ)"
-
-#: cmdlnopts.c:77
-msgid   "absolute frame Y0 coordinate (-1 - all with overscan)"
-msgstr  "ÁÂÓÏÌÀÔÎÁÑ ËÏÏÒÄÉÎÁÔÁ Y0 (-1 - ×ËÌÀÞÁÑ Ï×ÅÒÓËÁÎ)"
-
-#: cmdlnopts.c:79
-msgid   "absolute frame Y1 coordinate (-1 - all with overscan)"
-msgstr  "ÁÂÓÏÌÀÔÎÁÑ ËÏÏÒÄÉÎÁÔÁ Y1 (-1 - ×ËÌÀÞÁÑ Ï×ÅÒÓËÁÎ)"
-
-#: cmdlnopts.c:65
-msgid   "add records to header from given file[s]"
-msgstr  "ÄÏÂÁ×ÉÔØ ÚÁÐÉÓÉ Ë ÛÁÐËÅ FITS-ÆÁÊÌÁ ÉÚ ÚÁÄÁÎÎÙÈ ÆÁÊÌÏ×"
-
-#: cmdlnopts.c:47
-msgid   "camera device number (if many: 0, 1, 2 etc)"
-msgstr  "ÎÏÍÅÒ ÕÓÔÒÏÊÓÔ×Á ËÁÍÅÒÙ"
-
-#: cmdlnopts.c:43
-msgid   "camera device plugin (e.g. devfli.so)"
-msgstr  "ÐÌÁÇÉÎ ËÁÍÅÒÙ (ÎÁÐÒÉÍÅÒ, devfli.so)"
-
-#: cmdlnopts.c:75
-msgid   "cancel current exposition"
-msgstr  "ÏÔÍÅÎÁ ÔÅËÕÝÅÊ ÜËÓÐÏÚÉÃÉÉ"
-
-#: cmdlnopts.c:82
-msgid   "close shutter"
-msgstr  "ÚÁËÒÙÔØ ÚÁÔ×ÏÒ"
-
-#: cmdlnopts.c:42
-msgid   "common device plugin (e.g devfli.so)"
-msgstr  "ÏÂÝÉÊ ÐÌÁÇÉÎ ÄÌÑ ×ÓÅÈ ÕÓÔÒÏÊÓÔ× (ÎÁÐÒÉÍÅÒ, devfli.so)"
-
-#: cmdlnopts.c:89
-msgid   "configure I/O port pins to given value (decimal number, pin1 is LSB, "
-        "1 == output, 0 == input)"
-msgstr  "ÓËÏÎÆÉÇÕÒÉÒÏ×ÁÔØ ÐÏÒÔ I/O × ÚÁÄÁÎÎÏÅ ÓÏÓÔÏÑÎÉÅ (ÄÅÓÑÔÉÞÎÏÅ ÞÉÓÌÏ, pin1 - ÍÌÁÄÛÉÊ ÂÉÔ, 1 - ×ÙÈÏÄ, 0 - ×ÈÏÄ)"
-
-#: cmdlnopts.c:55
-msgid   "fast readout mode"
-msgstr  "ÂÙÓÔÒÙÊ ÒÅÖÉÍ ÓÞÉÔÙ×ÁÎÉÑ"
-
-#: cmdlnopts.c:48
-msgid   "filter wheel device number (if many: 0, 1, 2 etc)"
-msgstr  "ÎÏÍÅÒ ÕÓÔÒÏÊÓÔ×Á ÔÕÒÅÌÉ"
-
-#: cmdlnopts.c:49
-msgid   "focuser device number (if many: 0, 1, 2 etc)"
-msgstr  "ÎÏÍÅÒ ÕÓÔÒÏÊÓÔ×Á ÆÏËÕÓÅÒÁ"
-
-#: cmdlnopts.c:44
-msgid   "focuser device plugin (e.g. devzwo.so)"
-msgstr  "ÐÌÁÇÉÎ ÆÏËÕÓÅÒÁ (ÎÁÐÒÉÍÅÒ, devzwo.so)"
-
-#: cmdlnopts.c:85
-msgid   "get value of I/O port pins"
-msgstr  "ÐÏÌÕÞÉÔØ ÚÎÁÞÅÎÉÅ ÐÏÒÔÁ I/O"
-
-#: cmdlnopts.c:70
-msgid   "horizontal binning to N pixels"
-msgstr  "ÇÏÒÉÚÏÎÔÁÌØÎÙÊ ÂÉÎÎÉÎÇ × N ÐÉËÓÅÌÅÊ"
-
-#: cmdlnopts.c:61
-msgid   "instrument name"
-msgstr  "ÎÁÚ×ÁÎÉÅ ÐÒÉÂÏÒÁ"
-
-#: cmdlnopts.c:46
-msgid   "list connected devices"
-msgstr  "ÓÐÉÓÏË ÐÏÄËÌÀÞÅÎÎÙÈ ÕÓÔÒÏÊÓÔ×"
-
-#: cmdlnopts.c:101
-msgid   "local INET socket port"
-msgstr  "ÐÏÒÔ ÌÏËÁÌØÎÏÇÏ ÓÅÔÅ×ÏÇÏ ÓÏËÅÔÁ"
-
-#: cmdlnopts.c:99
-msgid   "logging file name (if run as server)"
-msgstr  "ÉÍÑ ÆÁÊÌÁ ÌÏÇÇÉÒÏ×ÁÎÉÑ (ÅÓÌÉ ÚÁÐÕÝÅÎ ÓÅÒ×ÅÒ)"
-
-#: cmdlnopts.c:73
-msgid   "make pause for N seconds between expositions"
-msgstr  "ÐÁÕÚÁ × N ÓÅËÕÎÄ ÍÅÖÄÕ ÜËÓÐÏÚÉÃÉÑÍÉ"
-
-#: cmdlnopts.c:72
-msgid   "make series of N frames"
-msgstr  "ÐÏÓÌÅÄÏ×ÁÔÅÌØÎÏÓÔØ ÉÚ N ËÁÄÒÏ×"
-
-#: cmdlnopts.c:91
-msgid   "move focuser to absolute position, mm"
-msgstr  "ÐÅÒÅÍÅÓÔÉÔØ ÆÏËÕÓÅÒ × ÁÂÓÏÌÀÔÎÏÅ ÐÏÌÏÖÅÎÉÅ, ÍÍ"
-
-#: cmdlnopts.c:92
-msgid   "move focuser to relative position, mm (only for standalone)"
-msgstr  "ÐÅÒÅÍÅÓÔÉÔØ ÆÏËÕÓÅÒ × ÏÔÎÏÓÉÔÅÌØÎÏÅ ÐÏÌÏÖÅÎÉÅ, ÍÍ (ÎÅ ÄÌÑ ÓÅÒ×ÅÒ/ËÌÉÅÎÔ)"
-
-#: cmdlnopts.c:86
-msgid   "move stepper motor asynchronous"
-msgstr  "ÁÓÉÎÈÒÏÎÎÏÅ Ä×ÉÖÅÎÉÅ ÛÁÇÏ×ÏÇÏ Ä×ÉÇÁÔÅÌÑ"
-
-#: cmdlnopts.c:53
-msgid   "not open shutter, when exposing (\"dark frames\")"
-msgstr  "ÎÅ ÏÔËÒÙ×ÁÔØ ÚÁÔ×ÏÒ ÐÒÉ ÜËÓÐÏÚÉÃÉÉ (\"ÔÅÍÎÏ×ÙÅ\")"
-
-#: cmdlnopts.c:62
-msgid   "object name"
-msgstr  "ÎÁÚ×ÁÎÉÅ ÏÂßÅËÔÁ"
-
-#: cmdlnopts.c:60
-msgid   "object type (neon, object, flat etc)"
-msgstr  "ÔÉÐ ÏÂßÅËÔÁ (neon, object, flat É Ô.Ä.)"
-
-#: cmdlnopts.c:63
-msgid   "observers' names"
-msgstr  "ÉÍÅÎÁ ÎÁÂÌÀÄÁÔÅÌÅÊ"
-
-#: cmdlnopts.c:64
-msgid   "observing program name"
-msgstr  "ÎÁÚ×ÁÎÉÅ ÐÒÏÇÒÁÍÍÙ"
-
-#: imageview.c:517
-msgid   "off"
-msgstr  "×ÙËÌ"
-
-#: imageview.c:517
-msgid   "on"
-msgstr  "×ËÌ"
-
-#: cmdlnopts.c:81
-msgid   "open shutter"
-msgstr  "ÏÔËÒÙÔØ ÚÁÔ×ÏÒ"
-
-#: cmdlnopts.c:66
-msgid   "output file name"
-msgstr  "ÉÍÑ ÆÁÊÌÁ"
-
-#: cmdlnopts.c:59
-msgid   "program author"
-msgstr  "Á×ÔÏÒ ÐÒÏÇÒÁÍÍÙ"
-
-#: cmdlnopts.c:104
-msgid   "restart image server"
-msgstr  "ÐÅÒÅÚÁÐÕÓË ÓÅÒ×ÅÒÁ"
-
-#: cmdlnopts.c:51
-msgid   "rewrite output file if exists"
-msgstr  "ÐÅÒÅÚÁÐÉÓØ ×ÙÈÏÄÎÏÇÏ ÆÁÊÌÁ"
-
-#: cmdlnopts.c:102
-msgid   "run as client"
-msgstr  "ÚÁÐÕÓÔÉÔØ ËÌÉÅÎÔ"
-
-#: cmdlnopts.c:84
-msgid   "run exposition on HIGH @ pin5 I/O port"
-msgstr  ""
-
-#: cmdlnopts.c:83
-msgid   "run exposition on LOW @ pin5 I/O port"
-msgstr  ""
-
-#: cmdlnopts.c:54
-msgid   "run in 8-bit mode"
-msgstr  "8-ÂÉÔÎÙÊ ÒÅÖÉÍ"
-
-#: cmdlnopts.c:56
-msgid   "set CCD temperature to given value (degr C)"
-msgstr  "ÕÓÔÁÎÏ×ÉÔØ ÔÅÍÐÅÒÁÔÕÒÕ Ó×ÅÔÏÐÒÉÅÍÎÉËÁ (ÇÒÁÄã)"
-
-#: cmdlnopts.c:88
-msgid   "set I/O port pins to given value (decimal number, pin1 is LSB)"
-msgstr  "ÕÓÔÁÎÏ×ÉÔØ ÐÏÒÔ I/O (ÄÅÓÑÔÉÞÎÏÅ ÞÉÓÌÏ, pin1 - ÍÌÁÄÛÉÊ ÂÉÔ)"
-
-#: cmdlnopts.c:74
-msgid   "set exposure time to given value (seconds!)"
-msgstr  "ÕÓÔÁÎÏ×ÉÔØ ×ÒÅÍÑ ÜËÓÐÏÚÉÃÉÉ (ÓÅËÕÎÄÙ!)"
-
-#: cmdlnopts.c:57
-msgid   "set fan speed (0 - off, 1 - low, 2 - high)"
-msgstr  "ÕÓÔÁÎÏ×ÉÔØ ÓËÏÒÏÓÔØ ×ÅÎÔÉÌÑÔÏÒÁ (0 - ×ÙËÌ, 1 - ÎÉÚËÁÑ, 2 - ×ÙÓÏËÁÑ)"
-
-#: cmdlnopts.c:94
-msgid   "set wheel position"
-msgstr  "ÕÓÔÁÎÏ×ÉÔØ ÐÏÌÏÖÅÎÉÅ ËÏÌÅÓÁ"
-
-#: cmdlnopts.c:50
-msgid   "show this help"
-msgstr  "ÏÔÏÂÒÁÚÉÔØ ÜÔÕ ÓÐÒÁ×ËÕ"
-
-#: cmdlnopts.c:52
-msgid   "verbose level (-V - messages, -VV - debug, -VVV - all shit)"
-msgstr  "ÕÒÏ×ÅÎØ ÂÏÌÔÌÉ×ÏÓÔÉ (-V - ÓÏÏÂÝÅÎÉÑ, -VV - ÏÔÌÁÄËÁ, -VVV - ×ÓÅ)"
-
-#: cmdlnopts.c:71
-msgid   "vertical binning to N pixels"
-msgstr  "×ÅÒÔÉËÁÌØÎÙÊ ÂÉÎÎÉÎÇ × N ÐÉËÓÅÌÅÊ"
-
-#: cmdlnopts.c:67
-msgid   "wait while exposition ends"
-msgstr  "ÖÄÁÔØ, ÐÏËÁ ÎÅ ËÏÎÞÉÔÓÑ ÜËÓÐÏÚÉÃÉÑ"
-
-#: cmdlnopts.c:45
-msgid   "wheel device plugin (e.g. devdummy.so)"
-msgstr  "ÐÌÁÇÉÎ ÕÓÔÒÏÊÓÔ×Á ÔÕÒÅÌÉ (ÎÁÐÒÉÍÅÒ, devdummy.so)"
--- a/main.c
+++ b/main.c
@@ -34,6 +34,7 @@
 #ifdef IMAGEVIEW
 #include "imageview.h"
 #endif
+#include "server.h"
 #include "socket.h"

 static int isserver = FALSE;
@@ -56,6 +57,7 @@ void signals(int signo){
    if(signo) WARNX("Get signal %d - exit", signo);
    if(!GP->client){
        DBG("Cancel capturing and close all");
+        stop_server();
        camstop();
        closewheel();
        focclose();
@@ -107,11 +109,14 @@ int main(int argc, char **argv){
        if(!GP->client) isserver = TRUE;
    }
    if(GP->path && !GP->client) isserver = TRUE;
+    if(!GP->path && !GP->port){
+        WARNX("Point one of options: `port` or `path` for command socket");
+    }
    if((isserver || GP->client) && !GP->imageport){
        GP->imageport = MALLOC(char, 32);
        if(!GP->port) sprintf(GP->imageport, "12345");
        else snprintf(GP->imageport, 31, "%d", 1+atoi(GP->port));
-        verbose(1, "Set image port to %s", GP->imageport);
+        printf("Set image port to %s\n", GP->imageport);
    }
    if(GP->client && (GP->commondev || GP->focuserdev || GP->cameradev || GP->wheeldev))
       ERRX("Can't be client and standalone in same time!");
@@ -123,12 +128,14 @@ int main(int argc, char **argv){
        OPENLOG(GP->logfile, lvl, 1);
        if(!sl_globlog) WARNX("Can't create log file");
    }
+    if(GP->info && GP->verbose < 2) GP->verbose = 2; // increase verbose messages level for `info`
    signal(SIGINT, signals);
    signal(SIGQUIT, signals);
    signal(SIGABRT, signals);
    signal(SIGTERM, signals);
    signal(SIGHUP, SIG_IGN);
    signal(SIGTSTP, SIG_IGN);
+    signal(SIGPIPE, SIG_IGN);
    signal(SIGUSR1, signals); // restart server
    if(!isserver){ // run in standalone or client mode
        int camerainit = FALSE;
--- a/server.c
+++ b/server.c
@@ -16,13 +16,16 @@
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

-#include <stdatomic.h>
+#include <fcntl.h>
 #include <netdb.h>
 #include <pthread.h>
 #include <poll.h>
+#include <stdatomic.h>
 #include <stdio.h>
 #include <string.h>
+#include <sys/mman.h>
 #include <sys/socket.h>
+#include <sys/stat.h>
 #include <usefull_macros.h>

 #include "ccdfunc.h"
@@ -38,15 +41,15 @@ static _Atomic cc_camera_state camstate = CAMERA_IDLE;
 #define FLAG_CANCEL             (1<<1)
 #define FLAG_RESTARTSERVER      (1<<2)
 static atomic_int camflags = 0, camfanspd = 0, confio = 0, nflushes, infty = 0;
-static char *outfile = NULL, *lastfile = NULL; // current output file name/prefix; last name of saved file
 static cc_frameformat frmformatmax = {0}, curformat = {0}; // maximal format

 static float focmaxpos = 0., focminpos = 0.; // focuser extremal positions
 static int wmaxpos = 0.; // wheel max pos
 static float tremain = 0.; // time when capture done

-// IPC key for shared memory
+// IPC key for shared memory (for client's getter)
 static key_t shmkey = IPC_PRIVATE;
+static int isrunning = 1;

 typedef struct{
    const char *key;
@@ -55,36 +58,36 @@ typedef struct{

 // cat | awk '{print "{ " $3 ", \"\" }," }' | sort
 strpair allcommands[] = {
-    { CC_CMD_8BIT,         "run in 8 bit mode instead of 16 bit" },
    { CC_CMD_AUTHOR,       "FITS 'AUTHOR' field" },
    { CC_CMD_BRIGHTNESS,   "camera brightness" },
    { CC_CMD_CAMDEVNO,     "camera device number" },
+    { CC_CMD_CAMFLAGS,     "get camflags (bits: 0-start capture, 1-cancel, 2-restart server"},
    { CC_CMD_CAMLIST,      "list all connected cameras" },
    { CC_CMD_CAMFANSPD,    "fan speed of camera" },
    { CC_CMD_CONFIO,       "camera IO configuration" },
    { CC_CMD_DARK,         "don't open shutter @ exposure" },
    { CC_CMD_EXPSTATE,     "get exposition state (0: cancel, 1: capturing, 2: frame ready, 3: error) "
-                      "or set (0: cancel, 1: start exp)\n    also get camflags (bits: 0-start capture, 1-cancel, 2-restart server" },
+                               "or set (0: cancel, 1: start exp)\n" },
    { CC_CMD_EXPOSITION,   "exposition time" },
    { CC_CMD_FASTSPD,      "fast readout speed" },
-    { CC_CMD_FILENAME,     "save file with this name, like file.fits" },
-    { CC_CMD_FILENAMEPREFIX,"prefix of files, like ex (will be saved as exXXXX.fits)" },
    { CC_CMD_FDEVNO,       "focuser device number" },
    { CC_CMD_FOCLIST,      "list all connected focusers" },
+    { CC_CMD_FMAXPOS,      "get maximal focuser position"},
+    { CC_CMD_FMINPOS,      "get minimal focuser position"},
    { CC_CMD_FGOTO,        "focuser position" },
+    { CC_CMD_FTEMP,        "get focuser body temperature"},
    { CC_CMD_FRAMEFORMAT,  "camera frame format (X0,Y0,X1,Y1)" },
    { CC_CMD_GAIN,         "camera gain" },
    { CC_CMD_GETHEADERS,   "get last file FITS headers" },
    { CC_CMD_HBIN,         "horizontal binning" },
-    { CC_CMD_HEADERFILES,  "add FITS records from these files (comma-separated list)" },
    { CC_CMD_HELP,         "show this help" },
    { CC_CMD_IMHEIGHT,     "last image height" },
+    { CC_CMD_IMNUMBER,     "grabbed image number from server start"},
    { CC_CMD_IMWIDTH,      "last image width" },
-    { CC_CMD_INFO,         "connected devices state" },
    { CC_CMD_INFTY,        "an infinity loop taking images until there's connected clients" },
    { CC_CMD_INSTRUMENT,   "FITS 'INSTRUME' field" },
    { CC_CMD_IO,           "get/set camera IO" },
-    { CC_CMD_LASTFNAME,    "path to last saved file"},
+    { CC_CMD_8BIT,         "run in 8 bit mode instead of 16 bit" },
    { CC_CMD_FRAMEMAX,     "camera maximal available format" },
    { CC_CMD_NFLUSHES,     "camera number of preflushes" },
    { CC_CMD_OBJECT,       "FITS 'OBJECT' field" },
@@ -93,7 +96,6 @@ strpair allcommands[] = {
    { CC_CMD_PLUGINCMD,    "custom camera plugin command" },
    { CC_CMD_PROGRAM,      "FITS 'PROG-ID' field" },
    { CC_CMD_RESTART,      "restart server" },
-    { CC_CMD_REWRITE,      "rewrite file (if give `filename`, not `filenameprefix`)" },
    { CC_CMD_SHMEMKEY,     "get shared memory key" },
    { CC_CMD_SHUTTER,      "camera shutter's operations" },
    { CC_CMD_CAMTEMPER,    "camera chip temperature" },
@@ -101,7 +103,9 @@ strpair allcommands[] = {
    { CC_CMD_VBIN,         "vertical binning" },
    { CC_CMD_WDEVNO,       "wheel device number" },
    { CC_CMD_WLIST,        "list all connected wheels" },
+    { CC_CMD_WMAXPOS,      "get maximap wheel position"},
    { CC_CMD_WPOS,         "wheel position" },
+    { CC_CMD_WTEMP,        "get wheel body temperature"},
    {NULL, NULL},
 };

@@ -113,21 +117,55 @@ static int lock(){
        //DBG("\n\nAlready locked");
        return FALSE;
    }
+    //DBG("LOCK()");
    return TRUE;
 }
 static void unlock(){
-    if(pthread_mutex_unlock(&locmutex)) ERR("Can't unlock mutex");
+    if(pthread_mutex_unlock(&locmutex)){
+        LOGERR("Can't unlock socket mutex");
+        ERR("Can't unlock socket mutex");
+    }
+    //DBG("UNLOCK()");
 }

 static cc_IMG *ima = NULL;

+// cleanup semaphore, stop server processes
+void stop_server(){
+    isrunning = 0;
+    double t0 = sl_dtime();
+    // wait no more than 1s for graceful closing
+    while(sl_dtime() - t0 < 1.){
+        if(isrunning == -1) break;
+        usleep(1000);
+    }
+    // destroy semaphore
+    cc_remove_sem();
+}
+
 static void fixima(){
    FNAME();
    if(!camera) return;
+    double t0 = sl_dtime();
+    int locked = FALSE;
+    TIMESTAMP("Lock socket");
+    // lock socket operations
+    while(!(locked = lock()) && sl_dtime() - t0 < 0.5) usleep(1000);
+    if(!locked){
+        DBG("Still locked from outside -> unlock/lock");
+        while(!lock()) unlock(); // force unlocking if can't do this gracefully
+    }else DBG("LOCK takes %gs", sl_dtime()-t0);
    int raw_width = curformat.w / GP->hbin,  raw_height = curformat.h / GP->vbin;
+    TIMESTAMP("Check SHM image");
    // allocate memory for largest possible image
-    if(!ima) ima = cc_getshm(GP->shmkey, camera->array.h * camera->array.w * 2);
-    if(!ima) ERRX("Can't allocate memory for image");
+    if(!ima){
+        ima = cc_getshm(GP->shmkey, camera->array.h * camera->array.w * 2);
+        if(!ima) ERR("Can't allocate memory for image");
+        // init shared semaphore
+        cc_init_sem(TRUE);
+    }
+    TIMESTAMP("Lock SHM image");
+    cc_lock_shm(TRUE);
    shmkey = GP->shmkey;
    //if(raw_width == ima->w && raw_height == ima->h) return; // all OK
    DBG("curformat: %dx%d", curformat.w, curformat.h);
@@ -140,6 +178,9 @@ static void fixima(){
    DBG("GP->_8bit=%d", GP->_8bit);
    ima->bytelen = raw_height * raw_width * cc_getNbytes(ima);
    DBG("new image: %dx%d", raw_width, raw_height);
+    cc_unlock_shm();
+    unlock();
+    TIMESTAMP("All OK");
 }

 // functions for processCAM finite state machine
@@ -169,8 +210,8 @@ static inline void cameracapturestate(){ // capturing - wait for exposition ends
        if(cs != CAPTURE_PROCESS){
            TIMESTAMP("Capture ready");
            tremain = 0.;
-            // now save frame
-            if(!ima->data) LOGERR("Can't save image: not initialized");
+            // now capture frame
+            if(!ima || !ima->data) LOGERR("Can't capture image: data not initialized");
            else{
                TIMESTAMP("start capture");
                if(!camera->capture){
@@ -179,19 +220,20 @@ static inline void cameracapturestate(){ // capturing - wait for exposition ends
                    camstate = CAMERA_ERROR;
                    return;
                }
+                cc_lock_shm(TRUE);
                if(!camera->capture(ima)){
                    LOGERR("Can't capture image");
                    camstate = CAMERA_ERROR;
                    return;
                }else{
+                    TIMESTAMP("Fill FITS header");
                    ima->gotstat = 0; // fresh image without statistics - recalculate when save
                    ima->timestamp = sl_dtime(); // set timestamp
+                    fillFITSheader(ima);
                    ++ima->imnumber; // increment counter
-                    if(saveFITS(ima, &lastfile)){
-                        DBG("LAST file name changed");
-                    }
-                    TIMESTAMP("Image saved");
                }
+                cc_unlock_shm();
+                TIMESTAMP("Captured and unlocked");
            }
            camstate = CAMERA_FRAMERDY;
        }
@@ -205,12 +247,21 @@ static void* processCAM(_U_ void *d){
        ERRX(_("No camera device"));
    }
    double logt = 0;
-    while(1){
+#ifdef EBUG
+    double T = sl_dtime();
+#endif
+    while(isrunning){
        if(camflags & FLAG_RESTARTSERVER){
            LOGERR("User asks to restart");
            signals(1);
        }
-        usleep(100);
+#ifdef EBUG
+        if(sl_dtime() - T > 5.){
+            T = sl_dtime();
+            printf("\t\t\tprocessCAM(), 5 seconds\n");
+        }
+#endif
+        usleep(1000);
        if(tremain < 0.5 && tremain > 0.) usleep(tremain*1e6);
        if(lock()){
            // log
@@ -237,22 +288,17 @@ static void* processCAM(_U_ void *d){
                unlock();
                continue;
            }
+            unlock();
            cc_camera_state curstate = camstate;
            switch(curstate){
-                case CAMERA_IDLE:
-                    cameraidlestate();
-                break;
                case CAMERA_CAPTURE:
                    cameracapturestate();
                break;
-                case CAMERA_FRAMERDY:
-    // do nothing: when `server` got this state it sends "expstate=2" to all clients and changes state to IDLE
-                break;
-                case CAMERA_ERROR:
-    // do nothing: when `server` got this state it sends "expstate=3" to all clients and changes state to IDLE
+                default:
+                    cameraidlestate();
                break;
            }
-            unlock();
+
        }
    }
    return NULL;
@@ -267,8 +313,8 @@ static int camdevini(int n){
        LOGERR("Can't set active camera number");
        return FALSE;
    }
-    camdevno = n;
-    LOGMSG("Set camera device number to %d", camdevno);
+    atomic_store(&camdevno, n);
+    LOGMSG("Set camera device number to %d", n);
    cc_frameformat step;
    if(camera->getgeomlimits) camera->getgeomlimits(&frmformatmax, &step);
    curformat = frmformatmax;
@@ -291,8 +337,8 @@ static int focdevini(int n){
        LOGERR("Can't set active focuser number");
        return FALSE;
    }
-    focdevno = n;
-    LOGMSG("Set focuser device number to %d", focdevno);
+    atomic_store(&focdevno, n);
+    LOGMSG("Set focuser device number to %d", n);
    focuser->getMaxPos(&focmaxpos);
    focuser->getMinPos(&focminpos);
    return TRUE;
@@ -303,8 +349,8 @@ static int wheeldevini(int n){
        LOGERR("Can't set active wheel number");
        return FALSE;
    }
-    wheeldevno = n;
-    LOGMSG("Set wheel device number to %d", wheeldevno);
+    atomic_store(&wheeldevno, n);
+    LOGMSG("Set wheel device number to %d", n);
    wheel->getMaxPos(&wmaxpos);
    return TRUE;
 }
@@ -323,9 +369,8 @@ static cc_hresult restarthandler(_U_ int fd, _U_ const char *key, _U_ const char
 // image size
 static cc_hresult imsizehandler(int fd, const char *key, _U_ const char *val){
    char buf[64];
-    // send image width/height in pixels
-    if(0 == strcmp(key, CC_CMD_IMHEIGHT)) snprintf(buf, 63, CC_CMD_IMHEIGHT "=%d", ima->h);
-    else snprintf(buf, 63, CC_CMD_IMWIDTH "=%d", ima->w);
+    if(!ima) return CC_RESULT_FAIL;
+    snprintf(buf, 63, "%s=%d", key, (0 == strcmp(key, CC_CMD_IMHEIGHT)) ? ima->h : ima->w);
    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
    return CC_RESULT_SILENCE;
 }
@@ -338,7 +383,8 @@ static cc_hresult camlisthandler(int fd, _U_ const char *key, _U_ const char *va
            snprintf(buf, BUFSIZ-1, CC_CMD_CAMLIST "='%s'", modname);
            if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
    }
-    if(camdevno > -1 && camera->setDevNo) camera->setDevNo(camdevno);
+    int devno = atomic_load(&camdevno);
+    if(devno > -1 && camera->setDevNo) camera->setDevNo(devno);
    return CC_RESULT_SILENCE;
 }
 static cc_hresult camsetNhandler(_U_ int fd, _U_ const char *key, _U_ const char *val){
@@ -350,7 +396,7 @@ static cc_hresult camsetNhandler(_U_ int fd, _U_ const char *key, _U_ const char
        }
        if(!camdevini(num)) return CC_RESULT_FAIL;
    }
-    snprintf(buf, 63, CC_CMD_CAMDEVNO "=%d", camdevno);
+    snprintf(buf, 63, CC_CMD_CAMDEVNO "=%d", atomic_load(&camdevno));
    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
    return CC_RESULT_SILENCE;
 }
@@ -371,76 +417,6 @@ static cc_hresult exphandler(int fd, _U_ const char *key, const char *val){
    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
    return CC_RESULT_SILENCE;
 }
-// show last filename of saved FITS
-static cc_hresult lastfnamehandler(int fd, _U_ const char *key, _U_ const char *val){
-    char buf[PATH_MAX+32];
-    if(lastfile && *lastfile) snprintf(buf, PATH_MAX+31, CC_CMD_LASTFNAME "=%s", lastfile);
-    else snprintf(buf, PATH_MAX+31, CC_CMD_LASTFNAME "=");
-    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
-    return CC_RESULT_SILENCE;
-}
-// filename setter/getter
-static cc_hresult namehandler(int fd, _U_ const char *key, const char *val){
-    char buf[PATH_MAX+32];
-    DBG("filename=%s", val);
-    if(val && *val){
-        DBG("Make abs path");
-        char *path = makeabspath(val, FALSE);
-        if(!path){
-            LOGERR("Can't create file '%s'", val);
-            return CC_RESULT_BADVAL;
-        }
-        FREE(outfile);
-        outfile = strdup(path);
-        GP->outfile = outfile;
-        GP->outfileprefix = NULL;
-    }else{ // clear names
-        DBG("Clear names");
-        GP->outfileprefix = NULL;
-        GP->outfile = NULL;
-        return CC_RESULT_OK;
-    }
-    if(!GP->outfile) return CC_RESULT_FAIL;
-    snprintf(buf, PATH_MAX+31, CC_CMD_FILENAME "=%s", GP->outfile);
-    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
-    return CC_RESULT_SILENCE;
-}
-// filename prefix
-static cc_hresult nameprefixhandler(_U_ int fd, _U_ const char *key, const char *val){
-    char buf[PATH_MAX+32];
-    DBG("filename prefix=%s", val);
-    if(val){
-        char *path = makeabspath(val, FALSE);
-        if(!path){
-            LOGERR("Can't create file '%s'", val);
-            return CC_RESULT_BADVAL;
-        }
-        FREE(outfile);
-        outfile = strdup(path);
-        GP->outfileprefix = outfile;
-        GP->outfile = NULL;
-    }else{ // clear names
-        GP->outfileprefix = NULL;
-        GP->outfile = NULL;
-        return CC_RESULT_OK;
-    }
-    if(!GP->outfileprefix) return CC_RESULT_FAIL;
-    snprintf(buf, PATH_MAX+31, CC_CMD_FILENAMEPREFIX "=%s", GP->outfileprefix);
-    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
-    return CC_RESULT_SILENCE;
-}
-// rewrite
-static cc_hresult rewritefilehandler(_U_ int fd, _U_ const char *key, const char *val){
-    char buf[64];
-    if(val){
-        int n = atoi(val);
-        if(n < 0 || n > 1) return CC_RESULT_BADVAL;
-        GP->rewrite = n;
-    }
-    snprintf(buf, 63, CC_CMD_REWRITE "=%d", GP->rewrite);
-    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
-    return CC_RESULT_SILENCE;
-}
 static cc_hresult binhandler(_U_ int fd, const char *key, const char *val){
    char buf[64];
    if(val){
@@ -517,19 +493,21 @@ static cc_hresult camfanhandler(int fd, _U_ const char *key, _U_ const char *val
 }
 const char *shutterstr[] = {"open", "close", "expose @high", "expose @low"};
 static cc_hresult shutterhandler(_U_ int fd, _U_ const char *key, const char *val){
+    char buf[64];
    if(!camera->shuttercmd) return CC_RESULT_FAIL;
-    if(val){
-        int x = atoi(val);
-        if(x < 0 || x >= SHUTTER_AMOUNT) return CC_RESULT_BADVAL;
-        int r = camera->shuttercmd((cc_shutter_op)x);
-        if(r){
-           LOGMSG("Shutter command '%s'", shutterstr[x]);
-        }else{
-            LOGWARN("Can't run shutter command '%s'", shutterstr[x]);
-            return CC_RESULT_FAIL;
-        }
+    if(!val) return CC_RESULT_BADVAL;
+    int x = atoi(val);
+    if(x < 0 || x >= SHUTTER_AMOUNT) return CC_RESULT_BADVAL;
+    int r = camera->shuttercmd((cc_shutter_op)x);
+    if(r){
+       LOGMSG("Shutter command '%s'", shutterstr[x]);
+    }else{
+        LOGWARN("Can't run shutter command '%s'", shutterstr[x]);
+        return CC_RESULT_FAIL;
    }
-    return CC_RESULT_OK;
+    snprintf(buf, 63, "%s=%d", key, x);
+    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
+    return CC_RESULT_SILENCE;
 }
 static cc_hresult confiohandler(_U_ int fd, _U_ const char *key, _U_ const char *val){
    char buf[64];
@@ -636,29 +614,33 @@ static cc_hresult nflusheshandler(_U_ int fd, _U_ const char *key, _U_ const cha
    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
    return CC_RESULT_SILENCE;
 }
-static cc_hresult expstatehandler(_U_ int fd, _U_ const char *key, _U_ const char *val){
+static cc_hresult expstatehandler(int fd, _U_ const char *key, const char *val){
    char buf[64];
    if(val){
        int n = atoi(val);
        if(n == CAMERA_IDLE){ // cancel expositions
            camflags |= FLAG_CANCEL;
-            return CC_RESULT_OK;
        }
        else if(n == CAMERA_CAPTURE){ // start exposition
-            if(GP->exptime < 1e-9){
-                snprintf(buf, 63, CC_CMD_EXPOSITION "=%g", GP->exptime);
-                cc_sendstrmessage(fd, buf);
+            if(GP->exptime < 1e-9){ // need exposition time to be set
                return CC_RESULT_FAIL;
            }
+            if(camstate == CAMERA_CAPTURE){
+                DBG("Capture in process when user ask '%s=%s'", key, val);
+                return CC_RESULT_BUSY; // in progress
+            }
            TIMESTAMP("Get FLAG_STARTCAPTURE");
            TIMEINIT();
            camflags |= FLAG_STARTCAPTURE;
-            return CC_RESULT_OK;
        }
        else return CC_RESULT_BADVAL;
    }
    snprintf(buf, 63, CC_CMD_EXPSTATE "=%d", camstate);
    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
+    return CC_RESULT_SILENCE;
+}
+static cc_hresult camflagshandler(int fd, _U_ const char *key, _U_ const char *val){
+    char buf[64];
    snprintf(buf, 63, "camflags=%d", camflags);
    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
    return CC_RESULT_SILENCE;
@@ -683,6 +665,16 @@ static cc_hresult _8bithandler(int fd, _U_ const char *key, const char *val){
    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
    return CC_RESULT_SILENCE;
 }
+static cc_hresult imnohandler(int fd, const char *key, const char _U_ *val){
+    if(!ima) return CC_RESULT_FAIL;
+    char buf[64];
+    cc_lock_shm(TRUE);
+    int No = ima->imnumber;
+    cc_unlock_shm();
+    snprintf(buf, 63, "%s=%d", key, No);
+    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
+    return CC_RESULT_SILENCE;
+}
 static cc_hresult fastspdhandler(int fd, _U_ const char *key, const char *val){
    char buf[64];
    if(!camera->setfastspeed) return CC_RESULT_FAIL;
@@ -733,77 +725,6 @@ static cc_hresult FITSparhandler(int fd, const char *key, const char *val){
    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
    return CC_RESULT_SILENCE;
 }
-static cc_hresult FITSheaderhandler(int fd, _U_ const char *key, const char *val){
-    char buf[BUFSIZ], **sptr;
-    static char *curhdr = NULL;
-    static int firstrun = 1;
-    if(val){
-        int sz = 10, amount = 0;
-        // first we should check `val`
-        char b2[BUFSIZ], *bptr = buf;
-        snprintf(b2, BUFSIZ-1, "%s", val);
-        char **list = MALLOC(char*, sz), **lptr = list;
-        int L = BUFSIZ;
-        for(char *s = b2; ; s = NULL){
-            char *tok = strtok(s, ",;");
-            if(!tok){
-                *lptr = NULL;
-                break;
-            }
-            // check path
-            char *newpath = makeabspath(tok, TRUE);
-            DBG("next token: %s, path: %s", tok, newpath);
-            if(!newpath){ // error! Free list and return err
-                DBG("No such file");
-                sptr = list;
-                while(*sptr){
-                    FREE(*sptr++);
-                }
-                FREE(list);
-                return CC_RESULT_BADVAL;
-            }
-            *lptr++ = strdup(newpath);
-            if(++amount == sz){
-                DBG("Realloc");
-                sz += 10;
-                list = realloc(list, sz*sizeof(char*));
-                bzero(&list[sz-10], 10*sizeof(char*));
-            }
-            int N = snprintf(bptr, L-1, "%s,", newpath);
-            bptr += N; L -= N;
-        }
-        // free old list and change its value
-        if(GP->addhdr){
-            DBG("Free old list");
-            sptr = GP->addhdr;
-            while(*sptr){
-                DBG("Free %s", *sptr);
-                free(*(sptr++));
-            }
-        }
-        GP->addhdr = list;
-        FREE(curhdr);
-        if(*val && *val != ',') curhdr = strdup(buf); // command with empty arg will clear curhdr
-        DBG("curhdr now: %s", curhdr);
-    }
-    if(!curhdr && firstrun){
-        firstrun = 0;
-        if(GP->addhdr && *GP->addhdr){
-            char *ptr = buf;
-            int L = BUFSIZ;
-            sptr = GP->addhdr;
-            while(*sptr){
-                DBG("Add to curhdr: %s", *sptr);
-                int N = snprintf(ptr, L-1, "%s,", *sptr++);
-                L -= N; ptr += N;
-            }
-            curhdr = strdup(buf);
-        }
-    }
-    snprintf(buf, BUFSIZ-1, CC_CMD_HEADERFILES "=%s", curhdr);
-    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
-    return CC_RESULT_SILENCE;
-}
 /*
 static cc_hresult handler(_U_ int fd, _U_ const char *key, _U_ const char *val){
    char buf[64];
@@ -813,6 +734,22 @@ static cc_hresult handler(_U_ int fd, _U_ const char *key, _U_ const char *val){
 /*******************************************************************************
 ***************************** cc_Wheel handlers **********************************
 ******************************************************************************/
+static cc_hresult wmaxposhandler(int fd, const char *key, _U_ const char *val){
+    if(wheel->Ndevices < 1) return CC_RESULT_FAIL;
+    char buf[64];
+    snprintf(buf, 63, "%s=%d", key, wmaxpos);
+    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
+    return CC_RESULT_SILENCE;
+}
+static cc_hresult wtemphandler(int fd, const char *key, _U_ const char *val){
+    if(wheel->Ndevices < 1 || !wheel->getTbody) return CC_RESULT_FAIL;
+    char buf[64];
+    float t;
+    if(!wheel->getTbody(&t)) return CC_RESULT_FAIL;
+    snprintf(buf, 63, "%s=%.1f", key, t);
+    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
+    return CC_RESULT_SILENCE;
+}
 static cc_hresult wlisthandler(int fd, _U_ const char *key, _U_ const char *val){
    if(wheel->Ndevices < 1) return CC_RESULT_FAIL;
    for(int i = 0; i < wheel->Ndevices; ++i){
@@ -822,7 +759,8 @@ static cc_hresult wlisthandler(int fd, _U_ const char *key, _U_ const char *val)
        snprintf(buf, BUFSIZ-1, CC_CMD_WLIST "='%s'", modname);
        if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
    }
-    if(wheeldevno > -1) wheel->setDevNo(wheeldevno);
+    int devno = atomic_load(&wheeldevno);
+    if(devno > -1) wheel->setDevNo(devno);
    return CC_RESULT_SILENCE;
 }
 static cc_hresult wsetNhandler(int fd, _U_ const char *key, const char *val){
@@ -834,7 +772,7 @@ static cc_hresult wsetNhandler(int fd, _U_ const char *key, const char *val){
        }
        if(!wheeldevini(num)) return CC_RESULT_FAIL;
    }
-    snprintf(buf, 63, CC_CMD_WDEVNO "=%d", wheeldevno);
+    snprintf(buf, 63, CC_CMD_WDEVNO "=%d", atomic_load(&wheeldevno));
    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
    return CC_RESULT_SILENCE;
 }
@@ -859,17 +797,42 @@ static cc_hresult wgotohandler(_U_ int fd, _U_ const char *key, _U_ const char *
 /*******************************************************************************
 **************************** Focuser handlers *********************************
 ******************************************************************************/
-
+static cc_hresult fminposhandler(int fd, const char *key, _U_ const char *val){
+    if(focuser->Ndevices < 1) return CC_RESULT_FAIL;
+    char buf[64];
+    snprintf(buf, 63, "%s=%g", key, focminpos);
+    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
+    return CC_RESULT_SILENCE;
+}
+static cc_hresult fmaxposhandler(int fd, const char *key, _U_ const char *val){
+    if(focuser->Ndevices < 1) return CC_RESULT_FAIL;
+    char buf[64];
+    snprintf(buf, 63, "%s=%g", key, focmaxpos);
+    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
+    return CC_RESULT_SILENCE;
+}
+static cc_hresult ftemphandler(int fd, const char *key, _U_ const char *val){
+    if(focuser->Ndevices < 1 || !focuser->getTbody) return CC_RESULT_FAIL;
+    char buf[64];
+    float t;
+    if(!focuser->getTbody(&t)) return CC_RESULT_FAIL;
+    snprintf(buf, 63, "%s=%.1f", key, t);
+    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
+    return CC_RESULT_SILENCE;
+}
 static cc_hresult foclisthandler(int fd, _U_ const char *key, _U_ const char *val){
    if(focuser->Ndevices < 1) return CC_RESULT_FAIL;
    for(int i = 0; i < focuser->Ndevices; ++i){
        char modname[256], buf[BUFSIZ];
-        if(!focuser->setDevNo(i)) continue;
+        if(focuser->setDevNo){
+            if(!focuser->setDevNo(i)) continue;
+        }
        focuser->getModelName(modname, 255);
        snprintf(buf, BUFSIZ-1, CC_CMD_FOCLIST "='%s'", modname);
        if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
    }
-    if(focdevno > -1) focuser->setDevNo(focdevno);
+    int devno = atomic_load(&focdevno);
+    if(devno > -1 && focuser->setDevNo) focuser->setDevNo(devno);
    return CC_RESULT_SILENCE;
 }
 static cc_hresult fsetNhandler(int fd, _U_ const char *key, const char *val){
@@ -881,7 +844,7 @@ static cc_hresult fsetNhandler(int fd, _U_ const char *key, const char *val){
        }
        if(!focdevini(num)) return CC_RESULT_FAIL;
    }
-    snprintf(buf, 63, CC_CMD_FDEVNO "=%d", focdevno);
+    snprintf(buf, 63, CC_CMD_FDEVNO "=%d", atomic_load(&focdevno));
    if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
    return CC_RESULT_SILENCE;
 }
@@ -910,65 +873,6 @@ static cc_hresult fgotohandler(int fd, _U_ const char *key, const char *val){
 **************************** Common handlers **********************************
 ******************************************************************************/

-// information about everything
-static cc_hresult infohandler(int fd, _U_ const char *key, _U_ const char *val){
-    char buf[BUFSIZ], buf1[256];
-    float f;
-    int i;
-    if(camera){
-        if(camera->getModelName && camera->getModelName(buf1, 255)){
-            snprintf(buf, BUFSIZ-1, CC_CMD_CAMLIST "='%s'", buf1);
-            if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
-        }
-#define RUN(f, arg) do{if(CC_RESULT_DISCONNECTED == f(fd, arg, NULL)) return CC_RESULT_DISCONNECTED;}while(0)
-        RUN(namehandler, CC_CMD_FILENAME);
-        RUN(binhandler, CC_CMD_HBIN);
-        RUN(binhandler, CC_CMD_VBIN);
-        RUN(temphandler, CC_CMD_CAMTEMPER);
-        RUN(exphandler, CC_CMD_EXPOSITION);
-        RUN(lastfnamehandler, CC_CMD_LASTFNAME);
-        RUN(expstatehandler, CC_CMD_EXPSTATE);
-#undef RUN
-    }
-    if(wheel){
-        DBG("chk wheel");
-        if(wheel->getModelName(buf1, 255)){
-            snprintf(buf, BUFSIZ-1, CC_CMD_WLIST "='%s'", buf1);
-            if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
-        }
-        if(wheel->getTbody(&f)){
-            snprintf(buf, BUFSIZ-1, "wtemp=%.1f", f);
-            if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
-        }
-        if(wheel->getPos(&i)){
-            snprintf(buf, BUFSIZ-1, CC_CMD_WPOS "=%d", i);
-            if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
-        }
-        snprintf(buf, BUFSIZ-1, "wmaxpos=%d", wmaxpos);
-        if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
-    }
-    if(focuser){
-        DBG("Chk focuser");
-        if(focuser->getModelName(buf1, 255)){
-            snprintf(buf, BUFSIZ-1, CC_CMD_FOCLIST "='%s'", buf1);
-            if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
-        }
-        if(focuser->getTbody(&f)){
-            snprintf(buf, BUFSIZ-1, "foctemp=%.1f", f);
-            if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
-        }
-        snprintf(buf, BUFSIZ-1, "focminpos=%g", focminpos);
-        if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
-        snprintf(buf, BUFSIZ-1, "focmaxpos=%g", focmaxpos);
-        if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
-        if(focuser->getPos(&f)){
-            snprintf(buf, BUFSIZ-1, CC_CMD_FGOTO "=%g", f);
-            if(!cc_sendstrmessage(fd, buf)) return CC_RESULT_DISCONNECTED;
-        }
-    }
-    DBG("EOF");
-    return CC_RESULT_SILENCE;
-}
 // show help
 static cc_hresult helphandler(int fd, _U_ const char *key, _U_ const char *val){
    char buf[256];
@@ -981,7 +885,7 @@ static cc_hresult helphandler(int fd, _U_ const char *key, _U_ const char *val){
    return CC_RESULT_SILENCE;
 }

-// shared memory key
+// shared memory key getter
 static cc_hresult shmemkeyhandler(int fd, _U_ const char *key, _U_ const char *val){
    char buf[64];
    if(shmkey == IPC_PRIVATE) return CC_RESULT_FAIL;
@@ -1018,9 +922,15 @@ static cc_hresult pluginhandler(int fd, _U_ const char *key, const char *val){

 // get headers
 static cc_hresult gethdrshandler(int fd, _U_ const char *key, _U_ const char *val){
-    cc_charbuff *b = getFITSheader(ima);
-    if(!b) return CC_RESULT_FAIL;
-    if(!cc_sendstrmessage(fd, b->buf)) return CC_RESULT_DISCONNECTED;
+    if(!ima) return CC_RESULT_FAIL;
+    size_t nlines = ima->headerstrings;
+    if(nlines < 1) return CC_RESULT_FAIL;
+    char buf[FLEN_CARD+1];
+    for(size_t n = 0; n < nlines; ++n){
+        snprintf(buf, FLEN_CARD+1, "%s\n", ima->fitsheader[n]);
+        if(!cc_sendstrmessage(fd, buf))
+            return CC_RESULT_DISCONNECTED;
+    }
    return CC_RESULT_SILENCE;
 }

@@ -1056,14 +966,14 @@ static cc_hresult chkfoc(char *val){
    return CC_RESULT_FAIL;
 }
 static cc_handleritem items[] = {
-    {chktrue,infohandler, CC_CMD_INFO},
    {NULL,   helphandler, CC_CMD_HELP},
    {NULL,   restarthandler, CC_CMD_RESTART},
    {chkcc,  camlisthandler, CC_CMD_CAMLIST},
+    {chkcc,  camflagshandler, CC_CMD_CAMFLAGS},
    {chkcc,  camsetNhandler, CC_CMD_CAMDEVNO},
    {chkcc,  camfanhandler, CC_CMD_CAMFANSPD},
    {chkcc,  exphandler, CC_CMD_EXPOSITION},
-    {chkcc,  namehandler, CC_CMD_FILENAME},
+    {chkcc,  imnohandler, CC_CMD_IMNUMBER},
    {chkcc,  binhandler, CC_CMD_HBIN},
    {chkcc,  binhandler, CC_CMD_VBIN},
    {chkcc,  temphandler, CC_CMD_CAMTEMPER},
@@ -1079,8 +989,6 @@ static cc_handleritem items[] = {
    {chktrue,shmemkeyhandler, CC_CMD_SHMEMKEY},
    {chktrue,imsizehandler, CC_CMD_IMWIDTH},
    {chktrue,imsizehandler, CC_CMD_IMHEIGHT},
-    {chkcc,  nameprefixhandler, CC_CMD_FILENAMEPREFIX},
-    {chkcc,  rewritefilehandler, CC_CMD_REWRITE},
    {chkcc,  _8bithandler, CC_CMD_8BIT},
    {chkcc,  fastspdhandler, CC_CMD_FASTSPD},
    {chkcc,  darkhandler, CC_CMD_DARK},
@@ -1094,14 +1002,17 @@ static cc_handleritem items[] = {
    {NULL,   FITSparhandler, CC_CMD_OBJECT},
    {NULL,   FITSparhandler, CC_CMD_PROGRAM},
    {NULL,   FITSparhandler, CC_CMD_OBJTYPE},
-    {NULL,   FITSheaderhandler, CC_CMD_HEADERFILES},
-    {NULL,   lastfnamehandler, CC_CMD_LASTFNAME},
    {chkfoc, foclisthandler, CC_CMD_FOCLIST},
    {chkfoc, fsetNhandler, CC_CMD_FDEVNO},
    {chkfoc, fgotohandler, CC_CMD_FGOTO},
+    {chkfoc, fminposhandler, CC_CMD_FMINPOS},
+    {chkfoc, fmaxposhandler, CC_CMD_FMAXPOS},
+    {chkfoc, ftemphandler, CC_CMD_FTEMP},
    {chkwhl, wlisthandler, CC_CMD_WLIST},
    {chkwhl, wsetNhandler, CC_CMD_WDEVNO},
    {chkwhl, wgotohandler, CC_CMD_WPOS},
+    {chkwhl, wmaxposhandler, CC_CMD_WMAXPOS},
+    {chkwhl, wtemphandler, CC_CMD_WTEMP},
    {NULL, NULL, NULL},
 };

@@ -1109,10 +1020,25 @@ static cc_handleritem items[] = {
 #define STRBUFSZ    (255)

 // send image as raw data
-static void sendimage(int client){
-    if(ima->h < 1 || ima->w < 1) return;
-    cc_senddata(client, ima, sizeof(cc_IMG));
-    cc_senddata(client, ima->data, ima->bytelen);
+static void *sendimage(void *C){
+    if(!C || !ima || !ima->data) return NULL;
+    int client = *(int*)C;
+    if(ima->h < 1 || ima->w < 1) return NULL;
+    DBG("client fd: %d", client);
+    do{
+        // send image body
+        if(!cc_senddata(client, ima, sizeof(cc_IMG))) break;
+        // send image itself (client can close socket if don't need image data)
+        if(!cc_senddata(client, ima->data, ima->bytelen)) break;
+        // send FITS header (client can close socket if don't need it)
+        for(size_t i = 0; i < ima->headerstrings; ++i){ // send header
+            if(!cc_senddata(client, &ima->fitsheader[i], FLEN_CARD)) break;
+        }
+    }while(0);
+    close(client);
+    TIMESTAMP("Image sent");
+    DBG("%d closed", client);
+    return NULL;
 }

 void server(int sock, int imsock){
@@ -1121,12 +1047,12 @@ void server(int sock, int imsock){
    if(imsock < 0) WARNX("Server run without image transport socket");
    else if(listen(imsock, CC_MAXCLIENTS) == -1){
        WARN("listen()");
-        LOGWARN("listen()");
+        LOGERR("server(): error in listen() for image socket");
        return;
    }
    if(listen(sock, CC_MAXCLIENTS) == -1){
        WARN("listen()");
-        LOGWARN("listen()");
+        LOGERR("server(): error in listen() for command socket");
        return;
    }
    // init everything
@@ -1137,11 +1063,17 @@ void server(int sock, int imsock){
    wheeldevini(0);
    if(startCCD()) --ctr;
    camdevini(0);
-    if(ctr == 3) ERRX("No devices found");
+    if(ctr == 3){
+        LOGERR("server(): no devices found");
+        WARNX("No devices found");
+    }
    // start camera thread
    pthread_t camthread;
    if(camera){
-        if(pthread_create(&camthread, NULL, processCAM, NULL)) ERR("pthread_create()");
+        if(pthread_create(&camthread, NULL, processCAM, NULL)){
+            WARN("pthread_create()");
+            LOGERR("server(): pthread_create()");
+        }
    }
    int nfd = 2; // only two listening sockets @start: command and image
    struct pollfd poll_set[CC_MAXCLIENTS+2];
@@ -1155,9 +1087,18 @@ void server(int sock, int imsock){
    poll_set[0].events = POLLIN;
    poll_set[1].fd = imsock;
    poll_set[1].events = POLLIN;
-    while(1){
+#ifdef EBUG
+    double T = sl_dtime();
+#endif
+    while(isrunning == 1){
+#ifdef EBUG
+        if(sl_dtime() - T > 5.){
+            T = sl_dtime();
+            printf("\t\t\tserver(), 5 seconds\n");
+        }
+#endif
        poll(poll_set, nfd, 1); // max timeout - 1ms
-        //if(imsock > -1 && cc_canberead(imsock) > 0){
+        //if(imsock > -1 && sl_canread(imsock) > 0){
        if(imsock > -1 && (poll_set[1].revents & POLLIN)){
            //uint8_t buf[32];
            //int l = read(imsock, buf, 32);
@@ -1166,13 +1107,28 @@ void server(int sock, int imsock){
            socklen_t len = sizeof(addr);
            int client = accept(imsock, (struct sockaddr*)&addr, &len);
            DBG("client=%d", client);
+            // sending image could be a very long operation -> run it in separate thread
            if(client > -1){
-                DBG("client fd: %d", client);
-                sendimage(client);
-                close(client);
-                DBG("%d closed", client);
+                if(ima->imnumber == 0){
+                    WARNX("Client wants an image, but there's no data");
+                    close(client);
+                }else{
+                    pthread_t sendthread;
+                    if(pthread_create(&sendthread, NULL, sendimage, (void*)&client)){
+                        WARN("pthread_create()");
+                        LOGWARN("pthread_create() error");
+                        close(client);
+                    }else{
+                        DBG("Thread created -> detach");
+                        if(pthread_detach(sendthread)){
+                            WARN("pthread_detach()");
+                            LOGWARN("pthread_detach() error");
+                            pthread_cancel(sendthread);
+                            close(client);
+                        }else DBG("Thread detached");
+                    }
+                }
            }else{WARN("accept()"); DBG("disconnected");}
-            TIMESTAMP("Image sent");
        }
        if(poll_set[0].revents & POLLIN){ // check main for accept()
            struct sockaddr_in addr;
@@ -1193,6 +1149,7 @@ void server(int sock, int imsock){
                }
            }
        }
+#if 0
        // process some data & send messages to ALL
        if(camstate == CAMERA_FRAMERDY || camstate == CAMERA_ERROR){
            DBG("new image: timestamp=%.1f, num=%zd", ima->timestamp, ima->imnumber);
@@ -1203,17 +1160,14 @@ void server(int sock, int imsock){
                TIMESTAMP("Send message that all ready");
                cc_sendstrmessage(poll_set[i].fd, buff);
            }
-            if(camstate == CAMERA_FRAMERDY && (GP->outfile || GP->outfileprefix)){ // send to all last file name if file saved
-                snprintf(buff, PATH_MAX+31, CC_CMD_LASTFNAME "=%s", lastfile);
-                for(int i = 2; i < nfd; ++i)
-                    cc_sendstrmessage(poll_set[i].fd, buff);
-            }
            camstate = CAMERA_IDLE;
        }
+#endif
        // scan connections
        for(int fdidx = 2; fdidx < nfd; ++fdidx){
            if((poll_set[fdidx].revents & POLLIN) == 0) continue;
            int fd = poll_set[fdidx].fd;
+            DBG("Got active fd=%d", fd);
            cc_strbuff *curbuff = buffers[fdidx-1];
            int disconnected = 0;
            if(cc_read2buf(fd, curbuff)){
@@ -1236,7 +1190,7 @@ void server(int sock, int imsock){
            }
        }
        // check `infty`
-        if(camstate == CAMERA_IDLE && infty){ // start new exposition
+        if(camstate != CAMERA_CAPTURE && infty){ // start new exposition
            // mark to start new capture in infinity loop when at least one client connected
            if(nfd > 2){
                camflags |= FLAG_STARTCAPTURE;
@@ -1245,10 +1199,11 @@ void server(int sock, int imsock){
            }
        }
    }
-    // never reached
+    WARNX("SERVER STOPPED!");
+    camstop();
    focclose();
    closewheel();
-    closecam();
+    isrunning = -1;
 }

 /**
@@ -1274,7 +1229,7 @@ char *makeabspath(const char *path, int shouldbe){
    }
    if(!realpath(path, buf)){
        WARN("realpath()");
-        return NULL;
+        LOGWARN("realpath() error for %s", path);
    }else ret = buf;
    fclose(f);
    if(unl) unlink(path);
--- a/server.h
+++ b/server.h
@@ -18,6 +18,11 @@

 #pragma once

+#include "ccdcapture.h"
+
+// timeout of trying to lock mutex (if gone, force locking for server)
+#define MUTEX_LOCK_TMOUT    0.5
+
 // pause (seconds) between temperature logging
 #define TLOG_PAUSE  60.

@@ -25,3 +30,4 @@
 void server(int fd, int imsock);
 char *makeabspath(const char *path, int shouldbe);

+void stop_server();
Author	SHA1	Message	Date
Edward V. Emelianov	92c3c54c65	Merge pull request #1 from thehanslevi/codex/readme-occurred-typo Fix README typo	2026-06-19 08:32:08 +03:00
thehanslevi	94f1cf9656	Fix README typo	2026-06-18 21:16:03 -04:00
Edward Emelianov	66e2bdfaac	cont	2026-06-08 17:09:05 +03:00
Edward Emelianov	f65daab527	next fixes	2026-06-04 18:24:26 +03:00
Edward Emelianov	1f7aad348e	fx	2026-06-02 18:31:17 +03:00
Edward Emelianov	d355265995	start refactoring	2026-06-02 18:30:33 +03:00