From 5a6c34bb1a34fdc4a8fc49d6059a43ce497b6736 Mon Sep 17 00:00:00 2001
From: hayati ayguen <h_ayguen@web.de>
Date: Sun, 13 May 2018 11:47:17 +0200
Subject: [PATCH] fix GetIPv4AddrInfo[Static]() with no/empty address string

* looks, some systems return random value!
  directly return 0 in this case

Signed-off-by: hayati ayguen <h_ayguen@web.de>
---
 src/SimpleSocket.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/SimpleSocket.cpp b/src/SimpleSocket.cpp
index 1977e6a..a4fcc5a 100644
--- a/src/SimpleSocket.cpp
+++ b/src/SimpleSocket.cpp
@@ -1188,6 +1188,8 @@ bool CSimpleSocket::EnableNagleAlgoritm()
 
 uint32 CSimpleSocket::GetIPv4AddrInfoStatic( const char *pAddr, CSocketType nSocketType )
 {
+  if (!pAddr || !pAddr[0])
+    return 0;
   struct in_addr stIpAddress;
   bool ret = GetAddrInfoStatic( pAddr, 0, &stIpAddress, nSocketType );
   if (!ret)
@@ -1198,6 +1200,8 @@ uint32 CSimpleSocket::GetIPv4AddrInfoStatic( const char *pAddr, CSocketType nSoc
 
 uint32 CSimpleSocket::GetIPv4AddrInfo( const char *pAddr )
 {
+  if (!pAddr || !pAddr[0])
+    return 0;
   struct in_addr stIpAddress;
   bool ret = GetAddrInfo( pAddr, 0, &stIpAddress );
   if (!ret)