update tcp connections

Changelog

@@ -1,4 +1,5 @@
 2019-03-04:
+- added: TCP connections have set up a timeout of 2 seconds.
 - fixed: TCP connect set up the sock struct too fast so threaded applications had some
   problem if the connect went into a time out.
 

tcp.cc

@@ -160,6 +160,7 @@ int TCP::Connect(string hostport, int defaultport) {
 int TCP::Connect() {
 	int err, s;
     struct addrinfo hints, *res, *rp;
+	struct timeval timeout;
 
     memset(&hints, 0, sizeof(struct addrinfo));
     hints.ai_family = AF_UNSPEC;   		// use IPv4 or IPv6
@@ -178,6 +179,12 @@ int TCP::Connect() {
     //
     for (rp = res; rp != NULL; rp = rp->ai_next) {
         s = socket(rp->ai_family, rp->ai_socktype, rp->ai_protocol);
+
+		// setup timeout to max 2 secs
+		timeout.tv_sec = 2;
+		timeout.tv_usec = 0;
+		setsockopt(s, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
+		
         if (s == -1) continue;
         if (connect(s, rp->ai_addr, rp->ai_addrlen) != -1) {
 			sock = s;