"""stderr 捕获节点夹具。

启动时向标准错误输出一行警告，用于验证 NodeManager 的 stderr_tail 缓存。
"""

import http.server
import sys
import threading

print("stderr warning", file=sys.stderr, flush=True)


class Handler(http.server.BaseHTTPRequestHandler):
    def do_GET(self) -> None:
        self.send_response(200)
        self.end_headers()

    def log_message(self, format, *args) -> None:
        return


server = http.server.ThreadingHTTPServer(("127.0.0.1", 0), Handler)
print(f"WOV_NODE_READY port={server.server_address[1]}", flush=True)
threading.Thread(target=server.serve_forever, daemon=True).start()
threading.Event().wait()