implement timeout on connect()

STRING_S timeout is used (15 sec by default)

src/common.c

@@ -702,17 +702,31 @@ int doconnect(struct clientparam * param){
 	}
 	
 	if(param->operation >= 256 || (param->operation & CONNECT)){
+		struct pollfd fds[1];
 #ifdef _WIN32
 		unsigned long ul = 1;
+		ioctlsocket(param->remsock, FIONBIO, &ul);
+#else
+		socklen_t us = sizeof(ul);
+		fcntl(param->remsock,F_SETFL,O_NONBLOCK);
 #endif
 		if(so._connect(param->remsock,(struct sockaddr *)&param->sinsr,SASIZE(&param->sinsr))) {
+			if(errno != EAGAIN) return (13);
+		}
+	        memset(fds, 0, sizeof(fds));
+	        fds[0].fd = param->remsock;
+	        fds[0].events = POLLOUT;
+		if(so._poll(fds, 1, conf.timeouts[STRING_S]*1000) <= 0) {
 			return (13);
 		}
-		param->nconnects++;
-#ifdef _WIN32
-		ioctlsocket(param->remsock, FIONBIO, &ul);
-#else
-		fcntl(param->remsock,F_SETFL,O_NONBLOCK);
+#ifndef  _WIN32
+#ifdef SO_ERROR
+		getsockopt(param->remsock, SOL_SOCKET, SO_ERROR, &ul, &us);
+
+		if (ul != 0) {
+			return (13);
+		}
+#endif
 #endif
 	}
 	size = sizeof(param->sinsl);