From 532bd88062045014f6f62fd17436f59233297822 Mon Sep 17 00:00:00 2001
From: Benau <Benau@users.noreply.github.com>
Date: Thu, 15 Mar 2018 00:41:01 +0800
Subject: [PATCH] Avoid possible packet loss

The connect to peer done by server will auto terminate if same peer
from same port has connected already
---
 src/network/protocols/request_connection.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/network/protocols/request_connection.cpp b/src/network/protocols/request_connection.cpp
index 65fcf964a..d6d12f028 100644
--- a/src/network/protocols/request_connection.cpp
+++ b/src/network/protocols/request_connection.cpp
@@ -113,7 +113,14 @@ void RequestConnection::asynchronousUpdate()
                 // Direct socket always listens on server discovery port
                 server_addr.setPort(NetworkConfig::get()
                     ->getServerDiscoveryPort());
-                STKHost::get()->sendRawPacket(message, server_addr);
+                // Avoid possible packet loss, the connect to peer done by
+                // server will auto terminate if same peer from same port
+                // has connected already
+                for (int i = 0; i < 5; i++)
+                {
+                    STKHost::get()->sendRawPacket(message, server_addr);
+                    StkTime::sleep(1);
+                }
                 m_state = DONE;
             }
             else