fixed for "-pedantic-errors"

CMakeLists.txt

@@ -8,7 +8,7 @@ set(VERSION "${MAJOR_VERSION}.${MID_VERSION}.${MINOR_VERSION}")
 project(${PROJ} VERSION ${VERSION} LANGUAGES C)
 
 # default flags
-set(CMAKE_C_FLAGS "${CFLAGS} -O2")
+set(CMAKE_C_FLAGS "${CFLAGS} -O2 -pedantic-errors")
 set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS}")
 set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS} -Wextra -Wall -Werror -W")
 set(CMAKE_COLOR_MAKEFILE ON)

examples/clientserver.c

@@ -225,9 +225,11 @@ int main(int argc, char **argv){
     if(G.isserver){
         //sl_sock_keyno_init(&kph_number); // don't forget to init first or use macro in initialisation
         s = sl_sock_run_server(type, G.node, -1, handlers);
+        DBG("Server started");
     } else {
         sl_setup_con();
         s = sl_sock_run_client(type, G.node, -1);
+        DBG("Client started");
     }
     if(!s) ERRX("Can't create socket and/or run threads");
     if(G.isserver){

locale/ru/messages.po

@@ -8,7 +8,7 @@ msgid ""
 msgstr ""
 "Project-Id-Version: PACKAGE VERSION\n"
 "Report-Msgid-Bugs-To: \n"
-"POT-Creation-Date: 2025-11-06 15:03+0300\n"
+"POT-Creation-Date: 2026-03-04 09:05+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"
@@ -77,79 +77,79 @@ msgstr ""
 msgid "Can't use multiple args with arg_none!"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:267
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:268
 #, c-format
 msgid "double long arguments: --%s"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:273
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:274
 #, c-format
 msgid "double short arguments: -%c"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:343
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:347
 #, c-format
 msgid "Need argument with %s type\n"
 msgstr ""
 
 #. print only one message
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:435
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:439
 msgid "sl_showhelp(): option index out of range"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:441
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:445
 #, c-format
 msgid "Usage: %s [arguments]\n"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:528
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:535
 #, c-format
 msgid "Wrong parameter: %s"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:532
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:539
 #, c-format
 msgid "%s: need argument!"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:536
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:543
 #, c-format
 msgid "Wrong argument \"%s\" of parameter \"%s\""
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:147
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:154
 msgid "Server disconnected"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:434
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:441
 msgid "Can't start server handlers thread"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:503
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:513
 msgid "Limit of connections reached"
 msgstr ""
 
 #. check for RB overflow
 #. -1 - buffer empty (can't be), -2 - buffer overflow
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:547
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:548
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:557
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:558
 #, c-format
 msgid "Server thread: ring buffer overflow for fd=%d"
 msgstr ""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:562
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:572
 #, c-format
 msgid "Server thread: can't write data to ringbuffer: overflow from fd=%d"
 msgstr ""
 
 #. buffer overflow
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:574
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:584
 #, c-format
 msgid "Server thread: buffer overflow from fd=%d"
 msgstr ""
 
 #. never reached
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:664
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:681
 #, c-format
 msgid "Unsupported socket type %d"
 msgstr ""

locale/ru/ru.po

@@ -7,7 +7,7 @@
 msgid   ""
 msgstr  "Project-Id-Version: PACKAGE VERSION\n"
         "Report-Msgid-Bugs-To: \n"
-        "POT-Creation-Date: 2025-11-06 14:57+0300\n"
+        "POT-Creation-Date: 2026-03-04 09:01+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"
@@ -76,80 +76,80 @@ msgstr  "
 msgid   "Can't use multiple args with arg_none!"
 msgstr  "íÁÓÓÉ× ÐÁÒÁÍÅÔÒÏ× ÎÅ ÍÏÖÅÔ ÉÍÅÔØ ÔÉÐ arg_none!"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:267
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:268
 #, c-format
 msgid   "double long arguments: --%s"
 msgstr  "ÄÕÂÌÉÒÕÀÝÉÊÓÑ ÄÌÉÎÎÙÊ ÐÁÒÁÍÅÔÒ: --%s"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:273
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:274
 #, c-format
 msgid   "double short arguments: -%c"
 msgstr  "ÄÕÂÌÉÒÕÀÝÉÊÓÑ ËÏÒÏÔËÉÊ ÐÁÒÁÍÅÔÒ: -%c"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:343
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:347
 #, c-format
 msgid   "Need argument with %s type\n"
 msgstr  "îÅÏÂÈÏÄÉÍ ÁÒÇÕÍÅÎÔ Ó ÔÉÐÏÍ %s\n"
 
 #. print only one message
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:435
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:439
 msgid   "sl_showhelp(): option index out of range"
 msgstr  "sl_showhelp(): ÉÎÄÅËÓ ÏÐÃÉÉ ×ÎÅ ÄÏÐÕÓÔÉÍÏÇÏ ÄÉÁÐÁÚÏÎÁ"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:441
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:445
 #, c-format
 msgid   "Usage: %s [arguments]\n"
 msgstr  "éÓÐÏÌØÚÏ×ÁÎÉÅ: %s [ÁÒÇÕÍÅÎÔÙ]\n"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:528
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:535
 #, c-format
 msgid   "Wrong parameter: %s"
 msgstr  "îÅÐÒÁ×ÉÌØÎÙÊ ÐÁÒÁÍÅÔÒ: %s"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:532
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:539
 #, c-format
 msgid   "%s: need argument!"
 msgstr  "%s: ÎÅÏÂÈÏÄÉÍ ÁÒÇÕÍÅÎÔ!"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:536
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/parseargs.c:543
 #, c-format
 msgid   "Wrong argument \"%s\" of parameter \"%s\""
 msgstr  "îÅÐÒÁ×ÉÌØÎÙÊ ÁÒÇÕÍÅÎÔ \"%s\" ÐÁÒÁÍÅÔÒÁ \"%s\""
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:147
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:154
 msgid   "Server disconnected"
 msgstr  "óÅÒ×ÅÒ ÏÔËÌÀÞÅÎ"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:434
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:441
 msgid   "Can't start server handlers thread"
 msgstr  "îÅ ÍÏÇÕ ÚÁÐÕÓÔÉÔØ ÐÏÔÏË-ÏÂÒÁÂÏÔÞÉË ÓÅÒ×ÅÒÁ"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:503
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:513
 msgid   "Limit of connections reached"
 msgstr  "äÏÓÔÉÇÎÕÔ ÐÒÅÄÅÌ ÓÏÅÄÉÎÅÎÉÊ"
 
 #. check for RB overflow
 #. -1 - buffer empty (can't be), -2 - buffer overflow
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:547
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:548
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:557
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:558
 #, c-format
 msgid   "Server thread: ring buffer overflow for fd=%d"
 msgstr  "ðÏÔÏË ÓÅÒ×ÅÒÁ: ÐÅÒÅÐÏÌÎÅÎÉÅ ÂÕÆÅÒÁ ÏÔ fd=%d"
 
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:562
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:572
 #, c-format
 msgid   "Server thread: can't write data to ringbuffer: overflow from fd=%d"
 msgstr  "ðÏÔÏË ÓÅÒ×ÅÒÁ: ÎÅ ÍÏÇÕ ÓÏÈÒÁÎÉÔØ ÄÁÎÎÙÅ × ËÏÌØÃÅ×ÏÍ ÂÕÆÅÒÅ, "
         "ÐÅÒÅÐÏÌÎÅÎÉÅ ÏÔ fd=%d"
 
 #. buffer overflow
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:574
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:584
 #, c-format
 msgid   "Server thread: buffer overflow from fd=%d"
 msgstr  "ðÏÔÏË ÓÅÒ×ÅÒÁ: ÐÅÒÅÐÏÌÎÅÎÉÅ ÂÕÆÅÒÁ ÏÔ fd=%d"
 
 #. never reached
-#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:664
+#: /home/eddy/Docs/SAO/C_diff/snippets_library/socket.c:681
 #, c-format
 msgid   "Unsupported socket type %d"
 msgstr  "îÅÐÏÄÄÅÒÖÉ×ÁÅÍÙÊ ÔÉÐ ÓÏËÅÔÁ %d"

parseargs.c

@@ -191,6 +191,18 @@ void *get_aptr(void *paptr, sl_argtype_e type){
     return aptr[i - 1];
 }
 
+static int cmpstringp(const void *p1, const void *p2){
+    if(!p1 || !p2) return 0;
+    const char *str1 = * (char * const *) p1, *str2 = * (char * const *) p2;
+    if(!str1 && !str2) return 0;
+    else if(!str1) return 1;
+    else if(!str2) return -1;
+    return strcmp(str1, str2);
+}
+static int cmpcharp(const void *p1, const void *p2){
+    return (int)(*(char * const)p1 - *(char *const)p2);
+}
+
 /**
  * @brief sl_parseargs_hf - parse arguments with user help funtion
  * @param argc - amount of arguments
@@ -246,17 +258,6 @@ void sl_parseargs_hf(int *argc, char ***argv, sl_option_t *options, void (*helpf
         }
     }
     // sort all lists & check for repeating
-    int cmpstringp(const void *p1, const void *p2){
-        if(!p1 || !p2) return 0;
-        const char *str1 = * (char * const *) p1, *str2 = * (char * const *) p2;
-        if(!str1 && !str2) return 0;
-        else if(!str1) return 1;
-        else if(!str2) return -1;
-        return strcmp(str1, str2);
-    }
-    int cmpcharp(const void *p1, const void *p2){
-        return (int)(*(char * const)p1 - *(char *const)p2);
-    }
     qsort(longlist, optsize, sizeof(char *), cmpstringp);
     qsort(shortlist,optsize, sizeof(char), cmpcharp);
     char *prevl = longlist[0], prevshrt = shortlist[0];
@@ -336,7 +337,10 @@ void sl_parseargs_hf(int *argc, char ***argv, sl_option_t *options, void (*helpf
                 type = "string";
                 break;
             case arg_function:
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wpedantic"
                 result = ((sl_argfn_t)aptr)(optarg);
+#pragma GCC diagnostic pop
                 break;
         }
         if(!result){
@@ -460,6 +464,49 @@ void sl_showhelp(int oindex, sl_option_t *options){
     exit(-1);
 }
 
+static int findsubopt(char *par, sl_suboption_t *so){
+    int idx = 0;
+    if(!par) return -1;
+    while(so[idx].name){
+        if(strcasecmp(par, so[idx].name) == 0) return idx;
+        ++idx;
+    }
+    return -1; // badarg
+}
+static int opt_setarg(sl_suboption_t *so, int idx, char *val){
+    sl_suboption_t *soptr = &so[idx];
+    int result = FALSE;
+    void *aptr = soptr->argptr;
+    switch(soptr->type){
+    default:
+    case arg_none:
+        if(soptr->argptr) *((int*)aptr) += 1; // increment value
+        result = TRUE;
+        break;
+    case arg_int:
+        result = myatoll(aptr, val, arg_int);
+        break;
+    case arg_longlong:
+        result = myatoll(aptr, val, arg_longlong);
+        break;
+    case arg_double:
+        result = myatod(aptr, val, arg_double);
+        break;
+    case arg_float:
+        result = myatod(aptr, val, arg_float);
+        break;
+    case arg_string:
+        result = (*((void**)aptr) = (void*)strdup(val)) != NULL;
+        break;
+    case arg_function:
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wpedantic"
+        result = ((sl_argfn_t)aptr)(val);
+#pragma GCC diagnostic pop
+        break;
+    }
+    return result;
+}
 /**
  * @brief sl_get_suboption - get suboptions from parameter string
  * @param str - parameter string
@@ -467,46 +514,6 @@ void sl_showhelp(int oindex, sl_option_t *options){
  * @return TRUE if all OK
  */
 int sl_get_suboption(char *str, sl_suboption_t *opt){
-    int findsubopt(char *par, sl_suboption_t *so){
-        int idx = 0;
-        if(!par) return -1;
-        while(so[idx].name){
-            if(strcasecmp(par, so[idx].name) == 0) return idx;
-            ++idx;
-        }
-        return -1; // badarg
-    }
-    int opt_setarg(sl_suboption_t *so, int idx, char *val){
-        sl_suboption_t *soptr = &so[idx];
-        int result = FALSE;
-        void *aptr = soptr->argptr;
-        switch(soptr->type){
-            default:
-            case arg_none:
-                if(soptr->argptr) *((int*)aptr) += 1; // increment value
-                result = TRUE;
-            break;
-            case arg_int:
-                result = myatoll(aptr, val, arg_int);
-            break;
-            case arg_longlong:
-                result = myatoll(aptr, val, arg_longlong);
-            break;
-            case arg_double:
-                result = myatod(aptr, val, arg_double);
-            break;
-            case arg_float:
-                result = myatod(aptr, val, arg_float);
-            break;
-            case arg_string:
-                result = (*((void**)aptr) = (void*)strdup(val)) != NULL;
-            break;
-            case arg_function:
-                result = ((sl_argfn_t)aptr)(val);
-            break;
-        }
-        return result;
-    }
     char *tok;
     int ret = FALSE;
     char *tmpbuf;

socket.c

@@ -81,17 +81,24 @@ const char *sl_sock_hresult2str(sl_sock_hresult_e r){
 }
 
 // convert UNIX socket name for unaddr; result should be free'd
-static char *convunsname(const char *path){
-    char *apath = MALLOC(char, 106);
+static char *convunsname(const char *path, socklen_t *nbytes){
+    char *apath = MALLOC(char, UNIX_SOCK_PATH_MAX);
+    socklen_t len = 0;
     if(*path == 0){
         DBG("convert name starting from 0");
         apath[0] = 0;
-        strncpy(apath+1, path+1, 104);
+        strncpy(apath+1, path+1, UNIX_SOCK_PATH_MAX-2);
+        len = 1 + strlen(path+1);
     }else if(strncmp("\\0", path, 2) == 0){
         DBG("convert name starting from \\0");
         apath[0] = 0;
-        strncpy(apath+1, path+2, 104);
-    }else strncpy(apath, path, 105);
+        strncpy(apath+1, path+2, UNIX_SOCK_PATH_MAX-2);
+        len = 1 + strlen(path+2);
+    }else{
+        strncpy(apath, path, UNIX_SOCK_PATH_MAX-1);
+        len = strlen(path);
+    }
+    if(nbytes) *nbytes = len + sizeof(sa_family_t); // amount of bytes for `bind()` (parameter `len`)
     return apath;
 }
 
@@ -358,7 +365,7 @@ static sl_sock_hresult_e msgparser(sl_sock_t *client, char *str){
     int keylen = strlen(key);
     char *numstart = NULL;
     const char *bra = "([{", *ket = ")]}";
-    char *found = strchr(ket, key[keylen - 1]);
+    char *found = strchr((char*)ket, key[keylen - 1]);
     DBG("found=%s", found);
     if(found){
         char *keyend = strchr(key, bra[found - ket]); // find starting bracket
@@ -462,7 +469,9 @@ static void *serverthread(void _U_ *d){
     // ZERO - listening server socket
     poll_set[0].fd = sockfd;
     poll_set[0].events = POLLIN;
-    // disconnect client
+    // disconnect client (no way to make this function non-nested)
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wpedantic"
     void disconnect_(sl_sock_t *c, int N){
         DBG("Disconnect client \"%s\" (fd=%d)", c->IP, c->fd);
         if(s->disconnect_handler) s->disconnect_handler(c);
@@ -489,6 +498,7 @@ static void *serverthread(void _U_ *d){
         pthread_mutex_unlock(&c->mutex);
         --nfd;
     }
+#pragma GCC diagnostic pop
     // allocate buffer with size not less than RB size
     size_t bufsize = s->buffer->length; // as RB should be 1 byte less, this is OK
     uint8_t *buf = MALLOC(uint8_t, bufsize);
@@ -637,28 +647,35 @@ errex:
  */
 static sl_sock_t *sl_sock_open(sl_socktype_e type, const char *path, sl_sock_hitem_t *handlers, int bufsiz, int isserver){
     if(!path || type >= SOCKT_AMOUNT) return NULL;
+    printf("OPen\n");
+    FNAME();
     if(bufsiz < 256) bufsiz = 256;
     int sock = -1;
     struct addrinfo ai = {0}, *res = &ai;
     struct sockaddr_un unaddr = {0};
-    char *str = NULL;
     ai.ai_socktype = SOCK_STREAM;
     switch(type){
         case SOCKT_UNIX:
-            str = convunsname(path);
+        DBG("SOCKT_UNIX");
+            {
+            char *str = convunsname(path, &ai.ai_addrlen);
+            DBG("path+1: %s", str+1);
             if(!str) return NULL;
             unaddr.sun_family = AF_UNIX;
             ai.ai_addr = (struct sockaddr*) &unaddr;
-            ai.ai_addrlen = sizeof(unaddr);
-            memcpy(unaddr.sun_path, str, 106);
+            memcpy(unaddr.sun_path, str, UNIX_SOCK_PATH_MAX);
+            FREE(str); // don't forget!
             ai.ai_family = AF_UNIX;
             //ai.ai_socktype = SOCK_SEQPACKET;
+            }
         break;
         case SOCKT_NET:
         case SOCKT_NETLOCAL:
-            //ai.ai_socktype = SOCK_DGRAM; // = SOCK_STREAM;
-            ai.ai_family = AF_INET;
-            if(isserver) ai.ai_flags = AI_PASSIVE;
+            if(isserver){
+                ai.ai_flags = AI_PASSIVE;
+                //ai.ai_family = AF_INET;
+            }// else
+                ai.ai_family = AF_UNSPEC; // not AF_INET for client as there maybe problems with IPv6
         break;
         default: // never reached
             WARNX(_("Unsupported socket type %d"), type);
@@ -675,9 +692,9 @@ static sl_sock_t *sl_sock_open(sl_socktype_e type, const char *path, sl_sock_hit
         sl_sock_delete(&s);
         return NULL;
     }else{ // fill node/service
-        if(type == SOCKT_UNIX) s->node = strdup(str); // str now is converted path
+        if(type == SOCKT_UNIX) s->node = strdup(path); // str now is path copy
         else{
-            char *delim = strchr(path, ':');
+            char *delim = strchr((char*)path, ':');
             if(!delim) s->service = strdup(path); // only port
             else{
                 if(delim == path) s->service = strdup(path+1);
@@ -716,7 +733,7 @@ static sl_sock_t *sl_sock_open(sl_socktype_e type, const char *path, sl_sock_hit
     }
     for(struct addrinfo *p = res; p; p = p->ai_next){
         if((sock = socket(p->ai_family, p->ai_socktype, p->ai_protocol)) < 0) continue;
-        DBG("Try proto %d, type %d", p->ai_protocol, p->ai_socktype);
+        DBG("Try proto %d, type %d, socktype %d", p->ai_protocol, p->ai_socktype, p->ai_socktype);
         if(isserver){
             int reuseaddr = 1;
             if(setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, &reuseaddr, sizeof(int)) == -1){
@@ -737,10 +754,12 @@ static sl_sock_t *sl_sock_open(sl_socktype_e type, const char *path, sl_sock_hit
             if(connect(sock, p->ai_addr, p->ai_addrlen) == -1){
                 WARN("connect()");
                 close(sock); sock = -1;
+                continue;
             }
         }
         break;
     }
+    if(type != SOCKT_UNIX) freeaddrinfo(res); // don't forget to free memory allocated with getaddrinfo
     if(sock < 0) sl_sock_delete(&s);
     else{
         s->fd = sock;

usefull_macros.h

@@ -418,6 +418,8 @@ size_t sl_RB_writestr(sl_ringbuffer_t *b, char *s);
 /******************************************************************************\
                          The original socket.h
 \******************************************************************************/
+// max length (including trailing '\0') of UNIX socket path
+#define UNIX_SOCK_PATH_MAX 108
 
 // handler result: what to send to client
 typedef enum{
@@ -448,10 +450,10 @@ typedef struct{
 
 // optional keyword number like key[12] = 500
 typedef struct{
-    double magick;  // Inf - to distinguish it from sl_sock_*_t
+    double magick;  // -Inf - to distinguish it from sl_sock_*_t
     int n;          // if n < 0 there was no any number in `key`
 } sl_sock_keyno_t;
-#define SL_SOCK_KEYNO_DEFAULT       (sl_sock_keyno_t){.magick = -INFINITY, .n = -1}
+#define SL_SOCK_KEYNO_DEFAULT       {.magick = -INFINITY, .n = -1}
 void sl_sock_keyno_init(sl_sock_keyno_t*);
 int sl_sock_keyno_check(sl_sock_keyno_t*);
 
@@ -478,6 +480,9 @@ typedef enum{
 
 struct sl_sock;
 
+// opent socket and return its file descriptor
+int sl_sock_getfd(sl_socktype_e type, const char *path);
+
 // default max clients amount
 #define SL_DEF_MAXCLIENTS   (32)
 // custom socket handlers: connect/disconnect/etc
@@ -545,4 +550,3 @@ int sl_sock_sendall(sl_sock_t *sock, uint8_t *data, size_t len);
 sl_sock_hresult_e sl_sock_inthandler(sl_sock_t *client, sl_sock_hitem_t *hitem, const char *str);
 sl_sock_hresult_e sl_sock_dblhandler(sl_sock_t *client, sl_sock_hitem_t *hitem, const char *str);
 sl_sock_hresult_e sl_sock_strhandler(sl_sock_t *client, sl_sock_hitem_t *hitem, const char *str);
-