From 583d71680ec12349cd1bedea72ae136d55667ecb Mon Sep 17 00:00:00 2001
From: iphydf <iphydf@users.noreply.github.com>
Date: Thu, 5 Jan 2017 18:19:05 +0000
Subject: [PATCH] Check that TCP connections aren't dropped in callbacks.

They aren't, but it's unclear whether it's structurally impossible.
---
 toxcore/TCP_connection.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/toxcore/TCP_connection.c b/toxcore/TCP_connection.c
index e8f512735..a92182101 100644
--- a/toxcore/TCP_connection.c
+++ b/toxcore/TCP_connection.c
@@ -29,6 +29,8 @@
 
 #include "util.h"
 
+#include <assert.h>
+
 
 struct TCP_Connections {
     DHT *dht;
@@ -1397,6 +1399,9 @@ static void do_tcp_conns(TCP_Connections *tcp_c, void *userdata)
                 /* callbacks can change TCP connection address. */
                 tcp_con = get_tcp_connection(tcp_c, i);
 
+                // Make sure the TCP connection wasn't dropped in any of the callbacks.
+                assert(tcp_con != NULL);
+
                 if (tcp_con->connection->status == TCP_CLIENT_DISCONNECTED) {
                     if (tcp_con->status == TCP_CONN_CONNECTED) {
                         reconnect_tcp_relay_connection(tcp_c, i);