tcp: Set AI_PASSIVE when the socket will be used for listening

Signed-off-by: Martin Storsjö <martin@martin.st>

libavformat/tcp.c

@@ -63,6 +63,8 @@ static int tcp_open(URLContext *h, const char *uri, int flags)
     hints.ai_family = AF_UNSPEC;
     hints.ai_socktype = SOCK_STREAM;
     snprintf(portstr, sizeof(portstr), "%d", port);
+    if (listen_socket)
+        hints.ai_flags |= AI_PASSIVE;
     ret = getaddrinfo(hostname, portstr, &hints, &ai);
     if (ret) {
         av_log(h, AV_LOG_ERROR,