test-tcp: Use IPv4 instead of IPv6

This is because Docker doesn't have IPv6 by default.

tests/test-tcp.c

@@ -97,8 +97,8 @@ main (void)
   g_assert (nice_address_set_from_string (&active_bind_addr, "::1"));
 
   nice_address_init (&passive_bind_addr);
-  g_assert (nice_address_set_from_string (&passive_bind_addr, "::1"));
-  nice_address_set_port (&passive_bind_addr, 23456);
+  g_assert (nice_address_set_from_string (&passive_bind_addr, "127.0.0.1"));
+  nice_address_set_port (&passive_bind_addr, 0);
 
   nice_address_init (&tmp);
 
@@ -116,7 +116,7 @@ main (void)
       &active_bind_addr);
   g_assert (active_sock);
 
-  client = nice_tcp_active_socket_connect (active_sock, &passive_bind_addr);
+  client = nice_tcp_active_socket_connect (active_sock, &passive_sock->addr);
   g_assert (client);
   nice_socket_free (active_sock);
   active_sock = NULL;
@@ -135,9 +135,8 @@ main (void)
   g_source_attach (cli_input_source, g_main_loop_get_context (mainloop));
 
   g_assert (nice_address_get_port (&client->addr) != 0);
-  g_assert (nice_address_get_port (&server->addr) == 23456);
 
-  g_assert (nice_address_set_from_string (&tmp, "::1"));
+  g_assert (nice_address_set_from_string (&tmp, "127.0.0.1"));
   nice_address_set_port (&tmp, nice_address_get_port (&server->addr));
   g_assert (nice_address_get_port (&tmp) != 0);