Networking (Windows): waits for completion of CancelIO

Author: CarterLi

src/common/impl/networking_windows.c

@@ -258,7 +258,8 @@ const char* ffNetworkingRecvHttpResponse(FFNetworkingState* state, FFstrbuf* buf
             } else {
                 FF_DEBUG("WSAWaitForMultipleEvents failed: %s", ffDebugWin32Error((DWORD) WSAGetLastError()));
             }
-            CancelIo((HANDLE) state->sockfd);
+            if (CancelIoEx((HANDLE) state->sockfd, &state->overlapped))
+                WSAWaitForMultipleEvents(1, &state->overlapped.hEvent, TRUE, 10, TRUE);
             WSACloseEvent(state->overlapped.hEvent);
             closesocket(state->sockfd);
             ffStrbufDestroy(&state->command);
@@ -286,6 +287,12 @@ const char* ffNetworkingRecvHttpResponse(FFNetworkingState* state, FFstrbuf* buf
         // Not a critical error, continue anyway
     }
 
+    if (shutdown(state->sockfd, SD_SEND) == SOCKET_ERROR)
+    {
+        FF_DEBUG("Failed to shutdown socket send: %s", ffDebugWin32Error((DWORD) WSAGetLastError()));
+        // Not a critical error, continue anyway
+    }
+
     if(timeout > 0)
     {
         FF_DEBUG("Setting receive timeout: %u ms", timeout);