diff --git a/source/libs/index/inc/indexFst.h b/source/libs/index/inc/indexFst.h
index 4c5bca864a0be6b4926965fc1695a8e61d88feaa..ddeaee06ea024da687c44846c7d63fb0183bbbd0 100644
--- a/source/libs/index/inc/indexFst.h
+++ b/source/libs/index/inc/indexFst.h
@@ -290,21 +290,21 @@ bool fstVerify(Fst* fst);
 // refactor this function
 bool fstBuilderNodeCompileTo(FstBuilderNode* b, IdxFstFile* wrt, CompiledAddr lastAddr, CompiledAddr startAddr);
 
-typedef struct StreamState {
+typedef struct FstStreamState {
   FstNode*  node;
   uint64_t  trans;
   FstOutput out;
   void*     autState;
-} StreamState;
+} FstStreamState;
 
-void streamStateDestroy(void* s);
+void fstStreamStateDestroy(void* s);
 
 typedef struct FStmSt {
   Fst*              fst;
   FAutoCtx*         aut;
   SArray*           inp;
   FstOutput         emptyOutput;
-  SArray*           stack;  // <StreamState>
+  SArray*           stack;  // <FstStreamState>
   FstBoundWithData* endAt;
 } FStmSt;
 
@@ -317,14 +317,14 @@ typedef struct FStmStRslt {
 FStmStRslt* swsResultCreate(FstSlice* data, FstOutput fOut, void* state);
 void        swsResultDestroy(FStmStRslt* result);
 
-typedef void* (*StreamCallback)(void*);
+typedef void* (*streamCallback__fn)(void*);
 FStmSt* stmStCreate(Fst* fst, FAutoCtx* automation, FstBoundWithData* min, FstBoundWithData* max);
 
 void stmStDestroy(FStmSt* sws);
 
 bool stmStSeekMin(FStmSt* sws, FstBoundWithData* min);
 
-FStmStRslt* stmStNextWith(FStmSt* sws, StreamCallback callback);
+FStmStRslt* stmStNextWith(FStmSt* sws, streamCallback__fn callback);
 
 FStmBuilder* stmBuilderCreate(Fst* fst, FAutoCtx* aut);
 
diff --git a/source/libs/index/src/indexFst.c b/source/libs/index/src/indexFst.c
index aed2ec3ee321011d9777b437ae9453296b6bbc62..bbffcfa6c17aa628b0afc79ba96746d764add523 100644
--- a/source/libs/index/src/indexFst.c
+++ b/source/libs/index/src/indexFst.c
@@ -1165,7 +1165,7 @@ FStmSt* stmStCreate(Fst* fst, FAutoCtx* automation, FstBoundWithData* min, FstBo
   sws->emptyOutput.null = true;
   sws->emptyOutput.out = 0;
 
-  sws->stack = (SArray*)taosArrayInit(256, sizeof(StreamState));
+  sws->stack = (SArray*)taosArrayInit(256, sizeof(FstStreamState));
   sws->endAt = max;
   stmStSeekMin(sws, min);
 
@@ -1177,7 +1177,7 @@ void stmStDestroy(FStmSt* sws) {
   }
 
   taosArrayDestroy(sws->inp);
-  taosArrayDestroyEx(sws->stack, streamStateDestroy);
+  taosArrayDestroyEx(sws->stack, fstStreamStateDestroy);
 
   taosMemoryFree(sws);
 }
@@ -1188,10 +1188,10 @@ bool stmStSeekMin(FStmSt* sws, FstBoundWithData* min) {
     if (fstBoundWithDataIsIncluded(min)) {
       sws->emptyOutput.out = fstEmptyFinalOutput(sws->fst, &(sws->emptyOutput.null));
     }
-    StreamState s = {.node = fstGetRoot(sws->fst),
-                     .trans = 0,
-                     .out = {.null = false, .out = 0},
-                     .autState = automFuncs[aut->type].start(aut)};  // auto.start callback
+    FstStreamState s = {.node = fstGetRoot(sws->fst),
+                        .trans = 0,
+                        .out = {.null = false, .out = 0},
+                        .autState = automFuncs[aut->type].start(aut)};  // auto.start callback
     taosArrayPush(sws->stack, &s);
     return true;
   }
@@ -1223,7 +1223,7 @@ bool stmStSeekMin(FStmSt* sws, FstBoundWithData* min) {
       autState = automFuncs[aut->type].accept(aut, preState, b);
       taosArrayPush(sws->inp, &b);
 
-      StreamState s = {.node = node, .trans = res + 1, .out = {.null = false, .out = out}, .autState = preState};
+      FstStreamState s = {.node = node, .trans = res + 1, .out = {.null = false, .out = out}, .autState = preState};
       node = NULL;
 
       taosArrayPush(sws->stack, &s);
@@ -1244,7 +1244,7 @@ bool stmStSeekMin(FStmSt* sws, FstBoundWithData* min) {
         }
       }
 
-      StreamState s = {.node = node, .trans = i, .out = {.null = false, .out = out}, .autState = autState};
+      FstStreamState s = {.node = node, .trans = i, .out = {.null = false, .out = out}, .autState = autState};
       taosArrayPush(sws->stack, &s);
       taosMemoryFree(trans);
       return true;
@@ -1255,7 +1255,7 @@ bool stmStSeekMin(FStmSt* sws, FstBoundWithData* min) {
 
   uint32_t sz = taosArrayGetSize(sws->stack);
   if (sz != 0) {
-    StreamState* s = taosArrayGet(sws->stack, sz - 1);
+    FstStreamState* s = taosArrayGet(sws->stack, sz - 1);
     if (inclusize) {
       s->trans -= 1;
       taosArrayPop(sws->inp);
@@ -1264,7 +1264,7 @@ bool stmStSeekMin(FStmSt* sws, FstBoundWithData* min) {
       uint64_t      trans = s->trans;
       FstTransition trn;
       fstNodeGetTransitionAt(n, trans - 1, &trn);
-      StreamState s = {
+      FstStreamState s = {
           .node = fstGetNode(sws->fst, trn.addr), .trans = 0, .out = {.null = false, .out = out}, .autState = autState};
       taosArrayPush(sws->stack, &s);
       return true;
@@ -1274,14 +1274,14 @@ bool stmStSeekMin(FStmSt* sws, FstBoundWithData* min) {
 
   return false;
 }
-FStmStRslt* stmStNextWith(FStmSt* sws, StreamCallback callback) {
+FStmStRslt* stmStNextWith(FStmSt* sws, streamCallback__fn callback) {
   FAutoCtx* aut = sws->aut;
   FstOutput output = sws->emptyOutput;
   if (output.null == false) {
     FstSlice emptySlice = fstSliceCreate(NULL, 0);
     if (fstBoundWithDataExceededBy(sws->endAt, &emptySlice)) {
-      taosArrayDestroyEx(sws->stack, streamStateDestroy);
-      sws->stack = (SArray*)taosArrayInit(256, sizeof(StreamState));
+      taosArrayDestroyEx(sws->stack, fstStreamStateDestroy);
+      sws->stack = (SArray*)taosArrayInit(256, sizeof(FstStreamState));
       return NULL;
     }
     void* start = automFuncs[aut->type].start(aut);
@@ -1292,12 +1292,12 @@ FStmStRslt* stmStNextWith(FStmSt* sws, StreamCallback callback) {
   }
   SArray* nodes = taosArrayInit(8, sizeof(FstNode*));
   while (taosArrayGetSize(sws->stack) > 0) {
-    StreamState* p = (StreamState*)taosArrayPop(sws->stack);
+    FstStreamState* p = (FstStreamState*)taosArrayPop(sws->stack);
     if (p->trans >= FST_NODE_LEN(p->node) || !automFuncs[aut->type].canMatch(aut, p->autState)) {
       if (FST_NODE_ADDR(p->node) != fstGetRootAddr(sws->fst)) {
         taosArrayPop(sws->inp);
       }
-      streamStateDestroy(p);
+      fstStreamStateDestroy(p);
       continue;
     }
     FstTransition trn;
@@ -1318,10 +1318,10 @@ FStmStRslt* stmStNextWith(FStmSt* sws, StreamCallback callback) {
         isMatch = automFuncs[aut->type].isMatch(aut, eofState);
       }
     }
-    StreamState s1 = {.node = p->node, .trans = p->trans + 1, .out = p->out, .autState = p->autState};
+    FstStreamState s1 = {.node = p->node, .trans = p->trans + 1, .out = p->out, .autState = p->autState};
     taosArrayPush(sws->stack, &s1);
 
-    StreamState s2 = {.node = nextNode, .trans = 0, .out = {.null = false, .out = out}, .autState = nextState};
+    FstStreamState s2 = {.node = nextNode, .trans = 0, .out = {.null = false, .out = out}, .autState = nextState};
     taosArrayPush(sws->stack, &s2);
 
     int32_t  isz = taosArrayGetSize(sws->inp);
@@ -1331,8 +1331,8 @@ FStmStRslt* stmStNextWith(FStmSt* sws, StreamCallback callback) {
     }
     FstSlice slice = fstSliceCreate(buf, isz);
     if (fstBoundWithDataExceededBy(sws->endAt, &slice)) {
-      taosArrayDestroyEx(sws->stack, streamStateDestroy);
-      sws->stack = (SArray*)taosArrayInit(256, sizeof(StreamState));
+      taosArrayDestroyEx(sws->stack, fstStreamStateDestroy);
+      sws->stack = (SArray*)taosArrayInit(256, sizeof(FstStreamState));
       taosMemoryFreeClear(buf);
       fstSliceDestroy(&slice);
       taosArrayDestroy(nodes);
@@ -1375,11 +1375,11 @@ void swsResultDestroy(FStmStRslt* result) {
   taosMemoryFree(result);
 }
 
-void streamStateDestroy(void* s) {
+void fstStreamStateDestroy(void* s) {
   if (NULL == s) {
     return;
   }
-  StreamState* ss = (StreamState*)s;
+  FstStreamState* ss = (FstStreamState*)s;
   fstNodeDestroy(ss->node);
 }
 
diff --git a/source/os/src/osSocket.c b/source/os/src/osSocket.c
index fc943d4d76f983aed8c36efd72f851e9b8f3baa4..fd5bde90ba21b13f2bb3d2cbbeb7b9778b8929f4 100644
--- a/source/os/src/osSocket.c
+++ b/source/os/src/osSocket.c
@@ -73,6 +73,7 @@ typedef struct TdEpoll {
   EpollFd fd;
 } * TdEpollPtr, TdEpoll;
 
+#if 0
 int32_t taosSendto(TdSocketPtr pSocket, void *buf, int len, unsigned int flags, const struct sockaddr *dest_addr,
                    int addrlen) {
   if (pSocket == NULL || pSocket->fd < 0) {
@@ -84,6 +85,7 @@ int32_t taosSendto(TdSocketPtr pSocket, void *buf, int len, unsigned int flags,
   return sendto(pSocket->fd, buf, len, flags, dest_addr, addrlen);
 #endif
 }
+
 int32_t taosWriteSocket(TdSocketPtr pSocket, void *buf, int len) {
   if (pSocket == NULL || pSocket->fd < 0) {
     return -1;
@@ -114,6 +116,8 @@ int32_t taosReadFromSocket(TdSocketPtr pSocket, void *buf, int32_t len, int32_t
   }
   return recvfrom(pSocket->fd, buf, len, flags, destAddr, addrLen);
 }
+#endif  // endif 0
+
 int32_t taosCloseSocketNoCheck1(SocketFd fd) {
 #ifdef WINDOWS
   return closesocket(fd);
@@ -121,6 +125,7 @@ int32_t taosCloseSocketNoCheck1(SocketFd fd) {
   return close(fd);
 #endif
 }
+
 int32_t taosCloseSocket(TdSocketPtr *ppSocket) {
   int32_t code;
   if (ppSocket == NULL || *ppSocket == NULL || (*ppSocket)->fd < 0) {
@@ -131,6 +136,8 @@ int32_t taosCloseSocket(TdSocketPtr *ppSocket) {
   taosMemoryFree(*ppSocket);
   return code;
 }
+
+#if 0
 int32_t taosCloseSocketServer(TdSocketServerPtr *ppSocketServer) {
   int32_t code;
   if (ppSocketServer == NULL || *ppSocketServer == NULL || (*ppSocketServer)->fd < 0) {
@@ -216,20 +223,6 @@ int32_t taosShutDownSocketServerRDWR(TdSocketServerPtr pSocketServer) {
 #endif
 }
 
-void taosWinSocketInit() {
-#ifdef WINDOWS
-  static char flag = 0;
-  if (flag == 0) {
-    WORD    wVersionRequested;
-    WSADATA wsaData;
-    wVersionRequested = MAKEWORD(1, 1);
-    if (WSAStartup(wVersionRequested, &wsaData) == 0) {
-      flag = 1;
-    }
-  }
-#else
-#endif
-}
 int32_t taosSetNonblocking(TdSocketPtr pSocket, int32_t on) {
   if (pSocket == NULL || pSocket->fd < 0) {
     return -1;
@@ -262,6 +255,8 @@ int32_t taosSetNonblocking(TdSocketPtr pSocket, int32_t on) {
 #endif
   return 0;
 }
+#endif  // endif 0
+
 int32_t taosSetSockOpt(TdSocketPtr pSocket, int32_t level, int32_t optname, void *optval, int32_t optlen) {
   if (pSocket == NULL || pSocket->fd < 0) {
     return -1;
@@ -296,6 +291,8 @@ int32_t taosSetSockOpt(TdSocketPtr pSocket, int32_t level, int32_t optname, void
   return setsockopt(pSocket->fd, level, optname, optval, (int)optlen);
 #endif
 }
+
+#if 0
 int32_t taosGetSockOpt(TdSocketPtr pSocket, int32_t level, int32_t optname, void *optval, int32_t *optlen) {
   if (pSocket == NULL || pSocket->fd < 0) {
     return -1;
@@ -307,6 +304,9 @@ int32_t taosGetSockOpt(TdSocketPtr pSocket, int32_t level, int32_t optname, void
   return getsockopt(pSocket->fd, level, optname, optval, (int *)optlen);
 #endif
 }
+
+#endif
+
 uint32_t taosInetAddr(const char *ipAddr) {
 #ifdef WINDOWS
   uint32_t value;
@@ -330,6 +330,7 @@ const char *taosInetNtoa(struct in_addr ipInt, char *dstStr, int32_t len) {
 
 #define TCP_CONN_TIMEOUT 3000  // conn timeout
 
+#if 0
 int32_t taosWriteMsg(TdSocketPtr pSocket, void *buf, int32_t nbytes) {
   if (pSocket == NULL || pSocket->fd < 0) {
     return -1;
@@ -726,6 +727,7 @@ int taosValidIp(uint32_t ip) {
 #endif
   return 0;
 }
+#endif  // endif 0
 
 bool taosValidIpAndPort(uint32_t ip, uint16_t port) {
   struct sockaddr_in serverAdd;
@@ -774,6 +776,8 @@ bool taosValidIpAndPort(uint32_t ip, uint16_t port) {
   return true;
   // return 0 == taosValidIp(ip) ? true : false;
 }
+
+#if 0
 TdSocketServerPtr taosOpenTcpServerSocket(uint32_t ip, uint16_t port) {
   struct sockaddr_in serverAdd;
   SocketFd           fd;
@@ -888,6 +892,36 @@ int64_t taosCopyFds(TdSocketPtr pSrcSocket, TdSocketPtr pDestSocket, int64_t len
   return len;
 }
 
+// Function converting an IP address string to an uint32_t.
+uint32_t ip2uint(const char *const ip_addr) {
+  char ip_addr_cpy[20];
+  char ip[5];
+
+  tstrncpy(ip_addr_cpy, ip_addr, sizeof(ip_addr_cpy));
+
+  char *s_start, *s_end;
+  s_start = ip_addr_cpy;
+  s_end = ip_addr_cpy;
+
+  int32_t k;
+
+  for (k = 0; *s_start != '\0'; s_start = s_end) {
+    for (s_end = s_start; *s_end != '.' && *s_end != '\0'; s_end++) {
+    }
+    if (*s_end == '.') {
+      *s_end = '\0';
+      s_end++;
+    }
+    ip[k++] = (char)atoi(s_start);
+  }
+
+  ip[k] = '\0';
+
+  return *((uint32_t *)ip);
+}
+
+#endif  // endif 0
+
 void taosBlockSIGPIPE() {
 #ifdef WINDOWS
   // assert(0);
@@ -991,34 +1025,6 @@ int32_t taosGetFqdn(char *fqdn) {
   return 0;
 }
 
-// Function converting an IP address string to an uint32_t.
-uint32_t ip2uint(const char *const ip_addr) {
-  char ip_addr_cpy[20];
-  char ip[5];
-
-  tstrncpy(ip_addr_cpy, ip_addr, sizeof(ip_addr_cpy));
-
-  char *s_start, *s_end;
-  s_start = ip_addr_cpy;
-  s_end = ip_addr_cpy;
-
-  int32_t k;
-
-  for (k = 0; *s_start != '\0'; s_start = s_end) {
-    for (s_end = s_start; *s_end != '.' && *s_end != '\0'; s_end++) {
-    }
-    if (*s_end == '.') {
-      *s_end = '\0';
-      s_end++;
-    }
-    ip[k++] = (char)atoi(s_start);
-  }
-
-  ip[k] = '\0';
-
-  return *((uint32_t *)ip);
-}
-
 void tinet_ntoa(char *ipstr, uint32_t ip) {
   sprintf(ipstr, "%d.%d.%d.%d", ip & 0xFF, (ip >> 8) & 0xFF, (ip >> 16) & 0xFF, ip >> 24);
 }
@@ -1039,12 +1045,14 @@ void taosSetMaskSIGPIPE() {
 #endif
 }
 
+#if 0
 int32_t taosGetSocketName(TdSocketPtr pSocket, struct sockaddr *destAddr, int *addrLen) {
   if (pSocket == NULL || pSocket->fd < 0) {
     return -1;
   }
   return getsockname(pSocket->fd, destAddr, addrLen);
 }
+#endif  // endif 0
 
 /*
  * Set TCP connection timeout per-socket level.
@@ -1080,3 +1088,18 @@ int32_t taosCreateSocketWithTimeout(uint32_t timeout) {
 
   return (int)fd;
 }
+
+void taosWinSocketInit() {
+#ifdef WINDOWS
+  static char flag = 0;
+  if (flag == 0) {
+    WORD    wVersionRequested;
+    WSADATA wsaData;
+    wVersionRequested = MAKEWORD(1, 1);
+    if (WSAStartup(wVersionRequested, &wsaData) == 0) {
+      flag = 1;
+    }
+  }
+#else
+#endif
+}