make the timer longer

src/rpc/src/rpcMain.c

@@ -833,8 +833,8 @@ static SRpcConn *rpcProcessMsgHead(SRpcInfo *pRpc, SRecvInfo *pRecv) {
       terrno = rpcProcessReqHead(pConn, pHead);
       pConn->connType = pRecv->connType;
 
-      // client shall send the request within tsRpcTime again, put 20 mseconds tolerance
-      taosTmrReset(rpcProcessIdleTimer, tsRpcTimer+20, pConn, pRpc->tmrCtrl, &pConn->pIdleTimer);
+      // client shall send the request within tsRpcTime again, double it 
+      taosTmrReset(rpcProcessIdleTimer, tsRpcTimer*2, pConn, pRpc->tmrCtrl, &pConn->pIdleTimer);
     } else {
       terrno = rpcProcessRspHead(pConn, pHead);
     }