nacos-sdk-python 在 Ubuntu20.04 下连接 服务端掉线，windows11 正常

nacos 服务端版本 2.5.1 / 3.0.2
nacos 客户端版本 nacos-python-sdk V2.0.8
现象：相同的代码 在 windows pycharm 运行时，服务正常注册且连接正常不掉线，在 Ubuntu 20.04 conda 3.11 环境中跑，服务正常连接会出现掉线情况
问题探索：尝试 开异步线程循环调用 naming_client.server_health() 方法
发现：windows 版本下可以正常调用，linux 版本下首次调用正常，后续会卡住
附录：
代码：
import asyncio
import uvicorn
from fastapi import FastAPI
from v2.nacos import ClientConfigBuilder, GRPCConfig, NacosConfigService, ConfigParam, NacosNamingService,
RegisterInstanceParam

app = FastAPI()

async def service_discovery(nacos_ip,nacos_port,nacos_user,nacos_password,nacos_namespace,service_name,host,port):
client_config = (
ClientConfigBuilder()
.username(nacos_user)
.password(nacos_password)
.server_address(nacos_ip+":"+str(nacos_port))
.namespace_id(nacos_namespace)
.build()
)
naming_client = await NacosNamingService.create_naming_service(client_config)

# 1. 注册服务实例
await naming_client.register_instance(
    RegisterInstanceParam(
        service_name=service_name,
        ip=host,
        port=port,
        cluster_name="DEFAULT",
        ephemeral=True,  # 临时实例
        metadata={"version": "1.0"}
    )
)
print(f"服务注册成功: {service_name}@{nacos_ip}:{nacos_port}")
# 创建停止事件
stop_event = asyncio.Event()

# 启动健康检查循环（作为后台任务）
health_task = asyncio.create_task(health_check_loop(naming_client, stop_event))

async def health_check_loop(naming_client, stop_event: asyncio.Event = None):
"""
每3秒循环调用一次 naming_client.server_health() 方法

Args:
    naming_client: 命名客户端实例
    stop_event: 用于停止循环的事件标志
"""
while not stop_event.is_set() if stop_event else True:
    try:
        # 调用 server_health 方法
        result = await naming_client.server_health()
        print(f"Health check result: {result}")
    except Exception as e:
        # 处理可能的异常
        print(f"Health check failed: {e}")

    # 等待3秒，同时检查停止信号
    try:
        await asyncio.wait_for(stop_event.wait(), timeout=3.0) if stop_event else await asyncio.sleep(3)
        break  # 如果等待被中断，说明收到了停止信号
    except asyncio.TimeoutError:
        # 正常的3秒等待结束，继续下一次循环
        continue

if name == 'main':
# 服务注册
asyncio.run(service_discovery("192.168.10.206","8848","nacos","Supcon_21","a12d638e-b022-4f14-b42e-d9935254f166","connect","192.168.10.207","62260"))
print(f"服务配置信息 host:192.168.10.207,port:62260")
uvicorn.run(app=app, host="192.168.10.207", port=62260, log_level="info")


Reproduce the disconnect on Ubuntu 20.04 with Python 3.11, nacos-python-sdk V2.0.8, and the listed server versions. Start at NacosNamingService.create_naming_service and naming_client.server_health(), comparing the Windows and Linux behavior. Done means the service stays connected and repeated health checks do not hang.