fix:TCP套接字单次发送长度

qfmclient.cpp

@@ -866,10 +866,15 @@ int QFmClient::sendAESData2Proxy(int sock, char *buf, int length)
         toSendLength = toSendLength + header_size;
         int curSendLength = 0;
         int rlt = 0;
+        int fixLength = 512;    /*send length should less than 536.
+        otherwise will be occur [TCP Retransmission] error on XP platform at sometime.*/
         while(curSendLength < toSendLength)
         {
-            int res = send(sock, out + curSendLength, toSendLength - curSendLength, 0);
-
+            if(toSendLength - curSendLength < 512)
+            {
+                fixLength = toSendLength - curSendLength;
+            }
+            int res = send(sock, out + curSendLength, fixLength/*toSendLength - curSendLength*/, 0);
             if(res == SOCKET_ERROR)
             {
                 int err = WSAGetLastError();