[Refactor] Introduce sock_send/sock_recv wrappers for zmq IPC (#29012)

python/sglang/test/scripted_runtime/http_server.py

@@ -12,6 +12,7 @@ import zmq
 
 from sglang.srt.entrypoints.http_server import launch_server
 from sglang.srt.environ import envs
+from sglang.srt.managers.io_struct import sock_recv, sock_send
 from sglang.srt.server_args import ServerArgs
 from sglang.srt.utils.network import get_free_port, get_zmq_socket_on_host
 from sglang.test.scripted_runtime.io_struct import (
@@ -89,7 +90,7 @@ class ScriptedHttpServer:
             raise RuntimeError(f"ScriptedHttpServer is dirty: {self._dirty}")
 
         fn_path = f"{script_fn.__module__}:{script_fn.__qualname__}"
-        self._socket.send_pyobj(RunScript(fn_path=fn_path, args=args))
+        sock_send(self._socket, RunScript(fn_path=fn_path, args=args))
 
         if not self._socket.poll(int(timeout_s * 1000)):
             if not self._server_process.is_alive():
@@ -98,7 +99,7 @@ class ScriptedHttpServer:
             self._dirty = f"script {fn_path!r} timed out after {timeout_s}s"
             raise TimeoutError(self._dirty)
 
-        reply = self._socket.recv_pyobj()
+        reply = sock_recv(self._socket)
         match reply:
             case ScriptFailed(traceback=tb):
                 raise AssertionError(f"scripted-runtime script failed:\n{tb}")
@@ -116,7 +117,7 @@ class ScriptedHttpServer:
         fatal_error: Optional[OutOfBandError] = None
         try:
             try:
-                self._socket.send_pyobj(Shutdown())
+                sock_send(self._socket, Shutdown())
             except zmq.ZMQError:
                 pass
 
@@ -139,7 +140,7 @@ class ScriptedHttpServer:
                 f"{LISTENER_ACCEPT_TIMEOUT_S}s"
             )
 
-        ready = self._socket.recv_pyobj()
+        ready = sock_recv(self._socket)
         if not isinstance(ready, HookReady):
             raise RuntimeError(
                 f"ScriptedHttpServer: expected HookReady handshake, got {ready!r}"