diff --git a/source/libs/transport/src/transCli.c b/source/libs/transport/src/transCli.c
index 7e5874d8cd..f197e72ec5 100644
--- a/source/libs/transport/src/transCli.c
+++ b/source/libs/transport/src/transCli.c
@@ -23,6 +23,8 @@ typedef struct SCliConn {
   uv_write_t*  writeReq;
   void*        data;
   queue        conn;
+  char         spi;
+  char         secured;
 } SCliConn;
 typedef struct SCliMsg {
   SRpcReqContext* context;
@@ -47,6 +49,10 @@ typedef struct SClientObj {
   SCliThrdObj** pThreadObj;
 } SClientObj;
 
+// conn pool
+static SCliConn* getConnFromCache(void* cache, char* ip, uint32_t port);
+static void      addConnToCache(void* cache, char* ip, uint32_t port, SCliConn* conn);
+
 static void clientAllocrReadBufferCb(uv_handle_t* handle, size_t suggested_size, uv_buf_t* buf);
 static void clientReadCb(uv_stream_t* cli, ssize_t nread, const uv_buf_t* buf);
 static void clientWriteCb(uv_write_t* req, int status);
@@ -93,6 +99,16 @@ static void clientWriteCb(uv_write_t* req, int status) {
   uv_read_start((uv_stream_t*)pConn->stream, clientAllocrReadBufferCb, clientReadCb);
   // impl later
 }
+
+static void clientWrite(SCliConn* pConn) {
+  SCliMsg*  pMsg = pConn->data;
+  SRpcHead* pHead = rpcHeadFromCont(pMsg->context->pCont);
+  int       msgLen = rpcMsgLenFromCont(pMsg->context->contLen);
+  char*     msg = (char*)(pHead);
+
+  uv_buf_t wb = uv_buf_init(msg, msgLen);
+  uv_write(pConn->writeReq, (uv_stream_t*)pConn->stream, &wb, 1, clientWriteCb);
+}
 static void clientConnCb(uv_connect_t* req, int status) {
   // impl later
   SCliConn* pConn = req->data;
@@ -105,8 +121,8 @@ static void clientConnCb(uv_connect_t* req, int status) {
   SCliMsg* pMsg = pConn->data;
   SEpSet*  pEpSet = &pMsg->context->epSet;
   SRpcMsg  rpcMsg;
-  rpcMsg.ahandle = pMsg->context->ahandle;
-  rpcMsg.pCont = NULL;
+  // rpcMsg.ahandle = pMsg->context->ahandle;
+  // rpcMsg.pCont = NULL;
 
   char*    fqdn = pEpSet->fqdn[pEpSet->inUse];
   uint32_t port = pEpSet->port[pEpSet->inUse];
@@ -119,15 +135,16 @@ static void clientConnCb(uv_connect_t* req, int status) {
     return;
   }
   assert(pConn->stream == req->handle);
-
-  uv_buf_t wb;
-  uv_write(pConn->writeReq, (uv_stream_t*)pConn->stream, &wb, 1, clientWriteCb);
 }
 
 static SCliConn* getConnFromCache(void* cache, char* ip, uint32_t port) {
   // impl later
+
   return NULL;
 }
+static void addConnToCache(void* cache, char* ip, uint32_t port, SCliConn* conn) {
+  // impl later
+}
 
 static void clientHandleReq(SCliMsg* pMsg, SCliThrdObj* pThrd) {
   SEpSet* pEpSet = &pMsg->context->epSet;
@@ -140,11 +157,12 @@ static void clientHandleReq(SCliMsg* pMsg, SCliThrdObj* pThrd) {
 
   SCliConn* conn = getConnFromCache(pThrd->cache, fqdn, port);
   if (conn != NULL) {
+    // impl later
     conn->data = pMsg;
     conn->writeReq->data = conn;
-    uv_buf_t wb;
-    uv_write(conn->writeReq, (uv_stream_t*)conn->stream, &wb, 1, clientWriteCb);
-    // impl later
+    clientWrite(conn);
+    // uv_buf_t wb;
+    // uv_write(conn->writeReq, (uv_stream_t*)conn->stream, &wb, 1, clientWriteCb);
   } else {
     SCliConn* conn = malloc(sizeof(SCliConn));