Skip to content

Add AsyncServiceBrowser example #487

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
bdraco merged 1 commit into from
Jun 7, 2021
Merged

Add AsyncServiceBrowser example #487

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
78 changes: 78 additions & 0 deletions examples/async_browser.py
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -0,0 +1,78 @@
#!/usr/bin/env python3

""" Example of browsing for a service.

The default is HTTP and HAP; use --find to search for all available services in the network
"""

import argparse
import asyncio
import logging
from typing import cast

from zeroconf import IPVersion, ServiceStateChange
from zeroconf.asyncio import AsyncServiceBrowser, AsyncZeroconf


def async_on_service_state_change(
zeroconf: AsyncZeroconf, service_type: str, name: str, state_change: ServiceStateChange
) -> None:
print("Service %s of type %s state changed: %s" % (name, service_type, state_change))
if state_change is not ServiceStateChange.Added:
return
asyncio.ensure_future(async_display_service_info(zeroconf, service_type, name))


async def async_display_service_info(zeroconf: AsyncZeroconf, service_type: str, name: str) -> None:
info = await zeroconf.async_get_service_info(service_type, name)
print("Info from zeroconf.get_service_info: %r" % (info))
if info:
addresses = ["%s:%d" % (addr, cast(int, info.port)) for addr in info.parsed_addresses()]
print(" Name: %s" % name)
print(" Addresses: %s" % ", ".join(addresses))
print(" Weight: %d, priority: %d" % (info.weight, info.priority))
print(" Server: %s" % (info.server,))
if info.properties:
print(" Properties are:")
for key, value in info.properties.items():
print(" %s: %s" % (key, value))
else:
print(" No properties")
else:
print(" No info")
print('\n')


if __name__ == '__main__':
logging.basicConfig(level=logging.DEBUG)

parser = argparse.ArgumentParser()
parser.add_argument('--debug', action='store_true')
version_group = parser.add_mutually_exclusive_group()
version_group.add_argument('--v6', action='store_true')
version_group.add_argument('--v6-only', action='store_true')
args = parser.parse_args()

if args.debug:
logging.getLogger('zeroconf').setLevel(logging.DEBUG)
if args.v6:
ip_version = IPVersion.All
elif args.v6_only:
ip_version = IPVersion.V6Only
else:
ip_version = IPVersion.V4Only

aiozc = AsyncZeroconf(ip_version=ip_version)

services = ["_http._tcp.local.", "_hap._tcp.local."]
print("\nBrowsing %s service(s), press Ctrl-C to exit...\n" % services)
aiobrowser = AsyncServiceBrowser(aiozc, services, handlers=[async_on_service_state_change])

loop = asyncio.get_event_loop()
try:
loop.run_forever()
except KeyboardInterrupt:
pass
finally:
loop.run_until_complete(aiobrowser.async_cancel())
loop.run_until_complete(aiozc.async_close())