From c894ce30c412ed77ae02d08c4f4954296152171d Mon Sep 17 00:00:00 2001
From: John Preston <johnprestonmail@gmail.com>
Date: Wed, 10 Jul 2019 13:16:07 +0200
Subject: [PATCH] Fix socket packet reading.

---
 Telegram/SourceFiles/mtproto/connection_tcp.cpp | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/Telegram/SourceFiles/mtproto/connection_tcp.cpp b/Telegram/SourceFiles/mtproto/connection_tcp.cpp
index 7d22ea1d3..5a7fbfe8e 100644
--- a/Telegram/SourceFiles/mtproto/connection_tcp.cpp
+++ b/Telegram/SourceFiles/mtproto/connection_tcp.cpp
@@ -307,6 +307,10 @@ void TcpConnection::socketRead() {
 				_leftBytes -= readCount;
 				if (!_leftBytes) {
 					socketPacket(full.subspan(0, _readBytes));
+					if (!_socket || !_socket->isConnected()) {
+						return;
+					}
+
 					_usingLargeBuffer = false;
 					_largeBuffer.clear();
 					_offsetBytes = _readBytes = 0;
@@ -331,6 +335,10 @@ void TcpConnection::socketRead() {
 						return;
 					} else if (available.size() >= packetSize) {
 						socketPacket(available.subspan(0, packetSize));
+						if (!_socket || !_socket->isConnected()) {
+							return;
+						}
+
 						available = available.subspan(packetSize);
 						_offsetBytes += packetSize;
 						_readBytes -= packetSize;