fixbug crash

src/rpc/src/rpcMain.c

@@ -997,8 +997,8 @@ static SRpcConn *rpcProcessMsgHead(SRpcInfo *pRpc, SRecvInfo *pRecv, SRpcReqCont
     }
 
     if ( rpcIsReq(pHead->msgType) ) {
-      terrno = rpcProcessReqHead(pConn, pHead);
       pConn->connType = pRecv->connType;
+      terrno = rpcProcessReqHead(pConn, pHead);
 
       // stop idle timer
       taosTmrStopA(&pConn->pIdleTimer);  
@@ -1367,7 +1367,8 @@ static void rpcProcessConnError(void *param, void *id) {
   
   tDebug("%s %p, connection error happens", pRpc->label, pContext->ahandle);
 
-  if (pContext->numOfTry >= pContext->epSet.numOfEps) {
+  if (pContext->numOfTry >= pContext->epSet.numOfEps 
+      || pContex->msgType == TSDB_MSG_TYPE_FETCH) {
     rpcMsg.msgType = pContext->msgType+1;
     rpcMsg.ahandle = pContext->ahandle;
     rpcMsg.code = pContext->code;