Use CHECK_TIMEOUT after connect and add hsocket.c+htime.c to nslookup target

- Replace inline timeout check with CHECK_TIMEOUT macro by moving
  variable declarations before the connect: label to avoid crossing
  initializations with goto.
- Add hsocket.c and htime.c to nslookup CMake target for Windows
  link compatibility (dns.c calls WSAInit from hsocket.c).

Co-authored-by: ithewei <26049660+ithewei@users.noreply.github.com>

Author: Copilot

http/client/HttpClient.cpp

@@ -330,6 +330,12 @@ static int http_client_exec(http_client_t* cli, HttpRequest* req, HttpResponse*
         }
     }
 
+    char recvbuf[1024] = {0};
+    char* data = NULL;
+    size_t len  = 0;
+    int total_nsend, nsend, nrecv;
+    total_nsend = nsend = nrecv = 0;
+
     if (connfd <= 0 || cli->host != req->host || cli->port != req->port) {
         cli->host = req->host;
         cli->port = req->port;
@@ -338,23 +344,13 @@ static int http_client_exec(http_client_t* cli, HttpRequest* req, HttpResponse*
         if (connfd < 0) {
             return connfd;
         }
-        if (timeout_ms > 0) {
-            cur_time = gettick_ms();
-            if (cur_time - start_time >= timeout_ms) {
-                cli->Close();
-                return ERR_TASK_TIMEOUT;
-            }
-            left_time = timeout_ms - (cur_time - start_time);
-        }
+        CHECK_TIMEOUT
     }
 
     cli->parser->SubmitRequest(req);
-    char recvbuf[1024] = {0};
-    int total_nsend, nsend, nrecv;
-    total_nsend = nsend = nrecv = 0;
 send:
-    char* data = NULL;
-    size_t len  = 0;
+    data = NULL;
+    len  = 0;
     while (cli->parser->GetSendData(&data, &len)) {
         total_nsend = 0;
         while (total_nsend < len) {

unittest/CMakeLists.txt

@@ -73,7 +73,7 @@ target_include_directories(objectpool_test PRIVATE .. ../base ../cpputil)
 target_link_libraries(objectpool_test -lpthread)
 
 # ------protocol------
-add_executable(nslookup nslookup_test.c ../protocol/dns.c)
+add_executable(nslookup nslookup_test.c ../protocol/dns.c ../base/hsocket.c ../base/htime.c)
 target_include_directories(nslookup PRIVATE .. ../base ../protocol)
 
 add_executable(ping ping_test.c ../protocol/icmp.c ../base/hsocket.c ../base/htime.c)