OSError: [Errno 98] 地址已在 heroku 中使用

Question

So I am trying to create some kind of python server and to use it with websockets (basic websockets, not Flask or something else). I've found this question and tried to do as in answer, but got no result. Here is code part where I create server and turn it on:

start_server = websockets.serve(hello, '0.0.0.0', os.environ['PORT'])

asyncio.get_event_loop().run_until_complete(start_server)

and here are heroku logs:

2020-02-02T19:15:18.488771+00:00 app[web.1]: [2020-02-02 19:15:18 +0000] [4] [INFO] Starting gunicorn 20.0.4
2020-02-02T19:15:18.489318+00:00 app[web.1]: [2020-02-02 19:15:18 +0000] [4] [INFO] Listening at: http://0.0.0.0:55677 (4)
2020-02-02T19:15:18.489403+00:00 app[web.1]: [2020-02-02 19:15:18 +0000] [4] [INFO] Using worker: sync
2020-02-02T19:15:18.493327+00:00 app[web.1]: [2020-02-02 19:15:18 +0000] [10] [INFO] Booting worker with pid: 10
2020-02-02T19:15:18.503354+00:00 app[web.1]: [2020-02-02 19:15:18 +0000] [11] [INFO] Booting worker with pid: 11
2020-02-02T19:15:18.598218+00:00 app[web.1]: [2020-02-02 19:15:18 +0000] [10] [ERROR] Exception in worker process
2020-02-02T19:15:18.598222+00:00 app[web.1]: Traceback (most recent call last):
2020-02-02T19:15:18.598223+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/asyncio/base_events.py", line 1073, in create_server
2020-02-02T19:15:18.598225+00:00 app[web.1]: sock.bind(sa)
2020-02-02T19:15:18.598226+00:00 app[web.1]: OSError: [Errno 98] Address already in use
2020-02-02T19:15:18.598228+00:00 app[web.1]:
2020-02-02T19:15:18.598229+00:00 app[web.1]: During handling of the above exception, another exception occurred:
2020-02-02T19:15:18.598230+00:00 app[web.1]:
2020-02-02T19:15:18.598232+00:00 app[web.1]: Traceback (most recent call last):
2020-02-02T19:15:18.598247+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
2020-02-02T19:15:18.598249+00:00 app[web.1]: worker.init_process()
2020-02-02T19:15:18.598250+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/workers/base.py", line 119, in init_process
2020-02-02T19:15:18.598251+00:00 app[web.1]: self.load_wsgi()
2020-02-02T19:15:18.598253+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi
2020-02-02T19:15:18.598254+00:00 app[web.1]: self.wsgi = self.app.wsgi()
2020-02-02T19:15:18.598255+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/base.py", line 67, in wsgi
2020-02-02T19:15:18.598257+00:00 app[web.1]: self.callable = self.load()
2020-02-02T19:15:18.598259+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
2020-02-02T19:15:18.598260+00:00 app[web.1]: return self.load_wsgiapp()
2020-02-02T19:15:18.598261+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp
2020-02-02T19:15:18.598263+00:00 app[web.1]: return util.import_app(self.app_uri)
2020-02-02T19:15:18.598264+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/util.py", line 358, in import_app
2020-02-02T19:15:18.598265+00:00 app[web.1]: mod = importlib.import_module(module)
2020-02-02T19:15:18.598267+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/importlib/__init__.py", line 126, in import_module
2020-02-02T19:15:18.598268+00:00 app[web.1]: return _bootstrap._gcd_import(name[level:], package, level)
2020-02-02T19:15:18.598270+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 994, in _gcd_import
2020-02-02T19:15:18.598271+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 971, in _find_and_load
2020-02-02T19:15:18.598273+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
2020-02-02T19:15:18.598274+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
2020-02-02T19:15:18.598275+00:00 app[web.1]: File "<frozen importlib._bootstrap_external>", line 678, in exec_module
2020-02-02T19:15:18.598277+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
2020-02-02T19:15:18.598278+00:00 app[web.1]: File "/app/run_server.py", line 27, in <module>
2020-02-02T19:15:18.598279+00:00 app[web.1]: asyncio.get_event_loop().run_until_complete(start_server)
2020-02-02T19:15:18.598281+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/asyncio/base_events.py", line 488, in run_until_complete
2020-02-02T19:15:18.598282+00:00 app[web.1]: return future.result()
2020-02-02T19:15:18.598284+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/asyncio/tasks.py", line 537, in _wrap_awaitable
2020-02-02T19:15:18.598285+00:00 app[web.1]: return (yield from awaitable.__await__())
2020-02-02T19:15:18.598287+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/websockets/server.py", line 965, in __await_impl__
2020-02-02T19:15:18.598288+00:00 app[web.1]: server = await self._create_server()
2020-02-02T19:15:18.598290+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/asyncio/base_events.py", line 1077, in create_server
2020-02-02T19:15:18.598291+00:00 app[web.1]: % (sa, err.strerror.lower()))
2020-02-02T19:15:18.598293+00:00 app[web.1]: OSError: [Errno 98] error while attempting to bind on address ('0.0.0.0', 55677): address already in use
2020-02-02T19:15:18.598565+00:00 app[web.1]: [2020-02-02 19:15:18 +0000] [10] [INFO] Worker exiting (pid: 10)
2020-02-02T19:15:18.601037+00:00 app[web.1]: [2020-02-02 19:15:18 +0000] [11] [ERROR] Exception in worker process
2020-02-02T19:15:18.601039+00:00 app[web.1]: Traceback (most recent call last):
2020-02-02T19:15:18.601041+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/asyncio/base_events.py", line 1073, in create_server
2020-02-02T19:15:18.601042+00:00 app[web.1]: sock.bind(sa)
2020-02-02T19:15:18.601044+00:00 app[web.1]: OSError: [Errno 98] Address already in use
2020-02-02T19:15:18.601045+00:00 app[web.1]:
2020-02-02T19:15:18.601047+00:00 app[web.1]: During handling of the above exception, another exception occurred:
2020-02-02T19:15:18.601048+00:00 app[web.1]:
2020-02-02T19:15:18.601050+00:00 app[web.1]: Traceback (most recent call last):
2020-02-02T19:15:18.601052+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 583, in spawn_worker
2020-02-02T19:15:18.601053+00:00 app[web.1]: worker.init_process()
2020-02-02T19:15:18.601055+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/workers/base.py", line 119, in init_process
2020-02-02T19:15:18.601056+00:00 app[web.1]: self.load_wsgi()
2020-02-02T19:15:18.601058+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/workers/base.py", line 144, in load_wsgi
2020-02-02T19:15:18.601059+00:00 app[web.1]: self.wsgi = self.app.wsgi()
2020-02-02T19:15:18.601061+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/base.py", line 67, in wsgi
2020-02-02T19:15:18.601062+00:00 app[web.1]: self.callable = self.load()
2020-02-02T19:15:18.601063+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 49, in load
2020-02-02T19:15:18.601065+00:00 app[web.1]: return self.load_wsgiapp()
2020-02-02T19:15:18.601066+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 39, in load_wsgiapp
2020-02-02T19:15:18.601068+00:00 app[web.1]: return util.import_app(self.app_uri)
2020-02-02T19:15:18.601069+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/util.py", line 358, in import_app
2020-02-02T19:15:18.601070+00:00 app[web.1]: mod = importlib.import_module(module)
2020-02-02T19:15:18.601072+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/importlib/__init__.py", line 126, in import_module
2020-02-02T19:15:18.601073+00:00 app[web.1]: return _bootstrap._gcd_import(name[level:], package, level)
2020-02-02T19:15:18.601075+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 994, in _gcd_import
2020-02-02T19:15:18.601076+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 971, in _find_and_load
2020-02-02T19:15:18.601078+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 955, in _find_and_load_unlocked
2020-02-02T19:15:18.601079+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 665, in _load_unlocked
2020-02-02T19:15:18.601081+00:00 app[web.1]: File "<frozen importlib._bootstrap_external>", line 678, in exec_module
2020-02-02T19:15:18.601082+00:00 app[web.1]: File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
2020-02-02T19:15:18.601083+00:00 app[web.1]: File "/app/run_server.py", line 27, in <module>
2020-02-02T19:15:18.601085+00:00 app[web.1]: asyncio.get_event_loop().run_until_complete(start_server)
2020-02-02T19:15:18.601086+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/asyncio/base_events.py", line 488, in run_until_complete
2020-02-02T19:15:18.601087+00:00 app[web.1]: return future.result()
2020-02-02T19:15:18.601089+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/asyncio/tasks.py", line 537, in _wrap_awaitable
2020-02-02T19:15:18.601090+00:00 app[web.1]: return (yield from awaitable.__await__())
2020-02-02T19:15:18.601092+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/websockets/server.py", line 965, in __await_impl__
2020-02-02T19:15:18.601093+00:00 app[web.1]: server = await self._create_server()
2020-02-02T19:15:18.601095+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/asyncio/base_events.py", line 1077, in create_server
2020-02-02T19:15:18.601096+00:00 app[web.1]: % (sa, err.strerror.lower()))
2020-02-02T19:15:18.601098+00:00 app[web.1]: OSError: [Errno 98] error while attempting to bind on address ('0.0.0.0', 55677): address already in use
2020-02-02T19:15:18.601406+00:00 app[web.1]: [2020-02-02 19:15:18 +0000] [11] [INFO] Worker exiting (pid: 11)
2020-02-02T19:15:18.639228+00:00 app[web.1]: Traceback (most recent call last):
2020-02-02T19:15:18.639258+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 209, in run
2020-02-02T19:15:18.639550+00:00 app[web.1]: self.sleep()
2020-02-02T19:15:18.639556+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 357, in sleep
2020-02-02T19:15:18.639766+00:00 app[web.1]: ready = select.select([self.PIPE[0]], [], [], 1.0)
2020-02-02T19:15:18.639771+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 242, in handle_chld
2020-02-02T19:15:18.639932+00:00 app[web.1]: self.reap_workers()
2020-02-02T19:15:18.639937+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 525, in reap_workers
2020-02-02T19:15:18.640169+00:00 app[web.1]: raise HaltServer(reason, self.WORKER_BOOT_ERROR)
2020-02-02T19:15:18.640215+00:00 app[web.1]: gunicorn.errors.HaltServer: <HaltServer 'Worker failed to boot.' 3>
2020-02-02T19:15:18.640221+00:00 app[web.1]:
2020-02-02T19:15:18.640223+00:00 app[web.1]: During handling of the above exception, another exception occurred:
2020-02-02T19:15:18.640224+00:00 app[web.1]:
2020-02-02T19:15:18.640227+00:00 app[web.1]: Traceback (most recent call last):
2020-02-02T19:15:18.640231+00:00 app[web.1]: File "/app/.heroku/python/bin/gunicorn", line 11, in <module>
2020-02-02T19:15:18.640350+00:00 app[web.1]: sys.exit(run())
2020-02-02T19:15:18.640355+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/wsgiapp.py", line 58, in run
2020-02-02T19:15:18.640522+00:00 app[web.1]: WSGIApplication("%(prog)s [OPTIONS] [APP_MODULE]").run()
2020-02-02T19:15:18.640527+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/base.py", line 228, in run
2020-02-02T19:15:18.640698+00:00 app[web.1]: super().run()
2020-02-02T19:15:18.640702+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/app/base.py", line 72, in run
2020-02-02T19:15:18.640826+00:00 app[web.1]: Arbiter(self).run()
2020-02-02T19:15:18.640831+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 229, in run
2020-02-02T19:15:18.640986+00:00 app[web.1]: self.halt(reason=inst.reason, exit_status=inst.exit_status)
2020-02-02T19:15:18.640990+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 342, in halt
2020-02-02T19:15:18.641179+00:00 app[web.1]: self.stop()
2020-02-02T19:15:18.641183+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 393, in stop
2020-02-02T19:15:18.641381+00:00 app[web.1]: time.sleep(0.1)
2020-02-02T19:15:18.641385+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 242, in handle_chld
2020-02-02T19:15:18.641543+00:00 app[web.1]: self.reap_workers()
2020-02-02T19:15:18.641547+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/gunicorn/arbiter.py", line 525, in reap_workers
2020-02-02T19:15:18.641774+00:00 app[web.1]: raise HaltServer(reason, self.WORKER_BOOT_ERROR)
2020-02-02T19:15:18.641801+00:00 app[web.1]: gunicorn.errors.HaltServer: <HaltServer 'Worker failed to boot.' 3>
2020-02-02T19:15:19.000000+00:00 app[api]: Build succeeded

If I understand correctly, I need to stop process that is currently running on that port and I just don't know how.

Answer 1

So I forgot to mention that I was using gunicorn to run my app, so my Procfile was

web: gunicorn run_server:server

and in the logs you can see that gunicorn listens on needed port, which is why it can't be accessed later (or I think so).

2020-02-02T19:15:18.489318+00:00 app[web.1]: [2020-02-02 19:15:18 +0000] [4] [INFO] Listening at: http://0.0.0.0:55677

I changed my Procfile to

web: python run_server.py $PORT

and now it's all good. Thank you for ideas.