net: call initialize proto function for all connections

This code fixes proto ws and wss, by calling the `conn_init` function
even for connections that are not sent back to main.

Reported by @suharik71 in #1956

(cherry picked from commit 6c9c6ef)

net/net_tcp.c

@@ -907,15 +907,6 @@ struct tcp_connection* tcp_conn_create(int sock, union sockaddr_union* su,
 	if (c==NULL)
 		return NULL;
 
-	if (protos[c->type].net.conn_init &&
-			protos[c->type].net.conn_init(c) < 0) {
-		LM_ERR("failed to do proto %d specific init for conn %p\n",
-				c->type, c);
-		tcp_conn_destroy(c);
-		return NULL;
-	}
-	c->flags |= F_CONN_INIT;
-
 	return (tcp_conn_send(c) == 0 ? c : NULL);
 }
 
@@ -934,6 +925,15 @@ struct tcp_connection* tcp_conn_new(int sock, union sockaddr_union* su,
 					available to the rest of the world */
 	sh_log(c->hist, TCP_REF, "connect, (%d)", c->refcnt);
 
+	if (protos[c->type].net.conn_init &&
+			protos[c->type].net.conn_init(c) < 0) {
+		LM_ERR("failed to do proto %d specific init for conn %p\n",
+				c->type, c);
+		tcp_conn_destroy(c);
+		return NULL;
+	}
+	c->flags |= F_CONN_INIT;
+
 	return c;
 }