基于mDNS通告服务

使用 https://github.com/python-zeroconf/python-zeroconf

pip install zeroconf

发现服务

from zeroconf import ServiceBrowser, ServiceListener, Zeroconf


class MyListener(ServiceListener):

    def update_service(self, zc: Zeroconf, type_: str, name: str) -> None:
        print(f"Service {name} updated")

    def remove_service(self, zc: Zeroconf, type_: str, name: str) -> None:
        print(f"Service {name} removed")

    def add_service(self, zc: Zeroconf, type_: str, name: str) -> None:
        info = zc.get_service_info(type_, name)
        print(f"Service {name} added, service info: {info}")


zeroconf = Zeroconf()
listener = MyListener()
browser = ServiceBrowser(zeroconf, "_http._tcp.local.", listener)
try:
    input("Press enter to exit...\n\n")
finally:
    zeroconf.close()

发布服务

from zeroconf import ServiceInfo, Zeroconf

info = ServiceInfo(
    "_http._tcp.local.",
    "My Service Name._http._tcp.local.",
    addresses=[socket.inet_aton("192.168.1.123")],
    port=3000,
    properties={"foo": "bar"},
    server="ash-2.local.",
)

zeroconf = Zeroconf()
zeroconf.register_service(info)
try:
    input("Press enter to exit...\n\n")
finally:
    zeroconf.unregister_service(info)
    zeroconf.close()