I am using Python3, signalr, and WebSocket to connect to a server.
When the connection is closed or reset by the server or the network layer, I receive the following error in the output but my print_error function is not fired.
How can I handle this error and reconnect the connection?
Below is the connection part of my code and the error I receive in the output when the connection is reset.
import gevent.monkey
gevent.monkey.patch_all()
from requests import Session
from signalr import Connection
session=Session()
connection = Connection(server_url, session)
connection.qs.update({"token" : token})
connection.received += pushMessage
connection.error += print_error
hub = connection.register_hub('myhub')
connection.start()
# rest of the code
Traceback (most recent call last):
File "src/gevent/greenlet.py", line 854, in gevent._gevent_cgreenlet.Greenlet.run
File "/usr/local/lib/python3.5/dist-packages/signalr/_connection.py", line 53, in wrapped_listener
listener()
File "/usr/local/lib/python3.5/dist-packages/signalr/transports/_ws_transport.py", line 42, in _receive
for notification in self.ws:
File "/usr/local/lib/python3.5/dist-packages/websocket/_core.py", line 109, in __iter__
yield self.recv()
File "/usr/local/lib/python3.5/dist-packages/websocket/_core.py", line 314, in recv
opcode, data = self.recv_data()
File "/usr/local/lib/python3.5/dist-packages/websocket/_core.py", line 331, in recv_data
opcode, frame = self.recv_data_frame(control_frame)
File "/usr/local/lib/python3.5/dist-packages/websocket/_core.py", line 344, in recv_data_frame
frame = self.recv_frame()
File "/usr/local/lib/python3.5/dist-packages/websocket/_core.py", line 378, in recv_frame
return self.frame_buffer.recv_frame()
File "/usr/local/lib/python3.5/dist-packages/websocket/_abnf.py", line 361, in recv_frame
self.recv_header()
File "/usr/local/lib/python3.5/dist-packages/websocket/_abnf.py", line 309, in recv_header
header = self.recv_strict(2)
File "/usr/local/lib/python3.5/dist-packages/websocket/_abnf.py", line 396, in recv_strict
bytes_ = self.recv(min(16384, shortage))
File "/usr/local/lib/python3.5/dist-packages/websocket/_core.py", line 453, in _recv
return recv(self.sock, bufsize)
File "/usr/local/lib/python3.5/dist-packages/websocket/_socket.py", line 102, in recv
bytes_ = _recv()
File "/usr/local/lib/python3.5/dist-packages/websocket/_socket.py", line 84, in _recv
return sock.recv(bufsize)
File "/usr/local/lib/python3.5/dist-packages/gevent/_ssl3.py", line 554, in recv
return self.read(buflen)
File "/usr/local/lib/python3.5/dist-packages/gevent/_ssl3.py", line 385, in read
return self._sslobj.read(nbytes or 1024)
File "/usr/lib/python3.5/ssl.py", line 577, in read
v = self._sslobj.read(len)
ConnectionResetError: [Errno 104] Connection reset by peer
2022-05-14T05:32:02Z <Greenlet at 0x7f53a9e6a748: wrapped_listener> failed with ConnectionResetError
Related
I made a Discord Bot using Python 3.6. It runs and behaves perfectly when run on my computer, yet when I run it on PythonAnywhere, I get this message. I installed Discord.py and all necessary modules. Please help. I am not that very good with complex programming talk, and not at all good with web talk, so please answer as simply as you can. Does this issue only happen with PythonAnywhere or all remote hosting sites?
01:42 ~ $ python3.6 MyCoolBot.py
Traceback (most recent call last):
File "/home/CompuGenius/.local/lib/python3.6/site-packages/aiohttp/connector.py", line 601, in _create_direc
t_connection
local_addr=self._local_addr)
File "/usr/lib/python3.6/asyncio/base_events.py", line 778, in create_connection
raise exceptions[0]
File "/usr/lib/python3.6/asyncio/base_events.py", line 765, in create_connection
yield from self.sock_connect(sock, address)
File "/usr/lib/python3.6/asyncio/selector_events.py", line 450, in sock_connect
return (yield from fut)
File "/usr/lib/python3.6/asyncio/selector_events.py", line 480, in _sock_connect_cb
raise OSError(err, 'Connect call failed %s' % (address,))
ConnectionRefusedError: [Errno 111] Connect call failed ('104.16.58.5', 443)
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/CompuGenius/.local/lib/python3.6/site-packages/aiohttp/connector.py", line 304, in connect
yield from self._create_connection(req)
File "/home/CompuGenius/.local/lib/python3.6/site-packages/aiohttp/connector.py", line 578, in _create_conne
ction
transport, proto = yield from self._create_direct_connection(req)
File "/home/CompuGenius/.local/lib/python3.6/site-packages/aiohttp/connector.py", line 624, in _create_direc
t_connection
(req.host, req.port, exc.strerror)) from exc
aiohttp.errors.ClientOSError: [Errno 111] Can not connect to discordapp.com:443 [Connect call failed ('104.16.
58.5', 443)]
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "MyCoolBot.py", line 39, in <module>
client.run('MY_BOT_TOKEN')
File "/home/CompuGenius/.local/lib/python3.6/site-packages/discord/client.py", line 519, in run
self.loop.run_until_complete(self.start(*args, **kwargs))
File "/usr/lib/python3.6/asyncio/base_events.py", line 468, in run_until_complete
return future.result()
File "/home/CompuGenius/.local/lib/python3.6/site-packages/discord/client.py", line 490, in start
yield from self.login(*args, **kwargs)
File "/home/CompuGenius/.local/lib/python3.6/site-packages/discord/client.py", line 416, in login
yield from getattr(self, '_login_' + str(n))(*args, **kwargs)
File "/home/CompuGenius/.local/lib/python3.6/site-packages/discord/client.py", line 346, in _login_1
data = yield from self.http.static_login(token, bot=is_bot)
File "/home/CompuGenius/.local/lib/python3.6/site-packages/discord/http.py", line 258, in static_login
data = yield from self.request(Route('GET', '/users/#me'))
File "/home/CompuGenius/.local/lib/python3.6/site-packages/discord/http.py", line 137, in request
r = yield from self.session.request(method, url, **kwargs)
File "/home/CompuGenius/.local/lib/python3.6/site-packages/aiohttp/client.py", line 555, in __iter__
resp = yield from self._coro
File "/home/CompuGenius/.local/lib/python3.6/site-packages/aiohttp/client.py", line 198, in _request
conn = yield from self._connector.connect(req)
File "/home/CompuGenius/.local/lib/python3.6/site-packages/aiohttp/connector.py", line 314, in connect
.format(key, exc.strerror)) from exc
aiohttp.errors.ClientOSError: [Errno 111] Cannot connect to host discordapp.com:443 ssl:True [Can not connect to discordapp.com:443 [Connect call failed ('104.16.58.5', 443)]]
Unclosed client session
client_session: <aiohttp.client.ClientSession object at 0x7f4b25d81be0>
This is because PythonAnywhere requires a proxy in such a way that the aiohttp websockets don't support. There's a thread on their forums about it here: https://www.pythonanywhere.com/forums/topic/7384/ (See #Patrick Haugh's comment above)
I am trying to run the remote manager example code from the multiprocessing documentation in pypy3 but I get an error connecting the client.
Traceback (most recent call last):
File "C:/temp/testpypy/mp_client.py", line 7, in <module>
m.connect()
File "C:\Python\pypy3-v6.0.0-win32\lib-python\3\multiprocessing\managers.py", line 455, in connect
conn = Client(self._address, authkey=self._authkey)
File "C:\Python\pypy3-v6.0.0-win32\lib-python\3\multiprocessing\connection.py", line 493, in Client
answer_challenge(c, authkey)
File "C:\Python\pypy3-v6.0.0-win32\lib-python\3\multiprocessing\connection.py", line 732, in answer_challenge
message = connection.recv_bytes(256) # reject large message
File "C:\Python\pypy3-v6.0.0-win32\lib-python\3\multiprocessing\connection.py", line 216, in recv_bytes
buf = self._recv_bytes(maxlength)
File "C:\Python\pypy3-v6.0.0-win32\lib-python\3\multiprocessing\connection.py", line 407, in _recv_bytes
buf = self._recv(4)
File "C:\Python\pypy3-v6.0.0-win32\lib-python\3\multiprocessing\connection.py", line 386, in _recv
buf.write(chunk)
TypeError: 'str' does not support the buffer interface
if I try to connect to it from a CPython interpreter (which is my ultimate goal) I get the following error:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "c:\Python\3.5.4.2\WinPython\python-3.5.4.amd64\lib\multiprocessing\managers.py", line 455, in connect
conn = Client(self._address, authkey=self._authkey)
File "c:\Python\3.5.4.2\WinPython\python-3.5.4.amd64\lib\multiprocessing\connection.py", line 493, in Client
answer_challenge(c, authkey)
File "c:\Python\3.5.4.2\WinPython\python-3.5.4.amd64\lib\multiprocessing\connection.py", line 737, in answer_challenge
response = connection.recv_bytes(256) # reject large message
File "c:\Python\3.5.4.2\WinPython\python-3.5.4.amd64\lib\multiprocessing\connection.py", line 218, in recv_bytes
self._bad_message_length()
File "c:\Python\3.5.4.2\WinPython\python-3.5.4.amd64\lib\multiprocessing\connection.py", line 151, in _bad_message_length
raise OSError("bad message length")
OSError: bad message length
Turns out to be a bug in PyPy3.
Here is the fixed ticket:
https://bitbucket.org/pypy/pypy/issues/2841/remote-multprocessing-issue#comment-45861347
celery workers stops working.
How to catch this error?
Connection timeout can happen due to any other reason also.
amqp==2.1.4
billiard==3.5.0.2
celery==4.0.2
docopt==0.4.0
kombu==4.0.2
pkg-resources==0.0.0
simplejson==3.10.0
vine==1.1.3
[2017-06-27 05:56:28,862: ERROR/MainProcess] Control command error: error(104, 'Connection reset by peer')
Traceback (most recent call last):
File "/home/usher/virt/delivery/local/lib/python2.7/site-packages /celery/worker/pidbox.py", line 42, in on_message
self.node.handle_message(body, message)
File "/home/usher/virt/delivery/local/lib/python2.7/site-packages/kombu/pidbox.py", line 129, in handle_message
return self.dispatch(**body)
File "/home/usher/virt/delivery/local/lib/python2.7/site-packages/kombu/pidbox.py", line 112, in dispatch
ticket=ticket)
File "/home/usher/virt/delivery/local/lib/python2.7/site-packages/kombu/pidbox.py", line 135, in reply
serializer=self.mailbox.serializer)
File "/home/usher/virt/delivery/local/lib/python2.7/site-packages/kombu/pidbox.py", line 265, in _publish_reply
**opts
File "/home/usher/virt/delivery/local/lib/python2.7/site-packages/kombu/messaging.py", line 181, in publish
exchange_name, declare,
File "/home/usher/virt/delivery/local/lib/python2.7/site-packages/kombu/messaging.py", line 203, in _publish
mandatory=mandatory, immediate=immediate,
File "/home/usher/virt/delivery/local/lib/python2.7/site-packages/amqp/channel.py", line 1748, in _basic_publish
(0, exchange, routing_key, mandatory, immediate), msg
File "/home/usher/virt/delivery/local/lib/python2.7/site-packages/amqp/abstract_channel.py", line 64, in send_method
conn.frame_writer(1, self.channel_id, sig, args, content)
File "/home/usher/virt/delivery/local/lib/python2.7/site-packages/amqp/method_framing.py", line 174, in write_frame
write(view[:offset])
File "/home/usher/virt/delivery/local/lib/python2.7/site-packages/amqp/transport.py", line 263, in write
self._write(s)
File "/usr/lib/python2.7/socket.py", line 228, in meth
return getattr(self._sock,name)(*args)
error: [Errno 104] Connection reset by peer
I'm trying to write code to view messages from my g-mail, then search in the latest message for a certain phrase, that triggers a command.
But I'm having problems with connecting to my g-mail
from imapclient import IMAPClient
HOST = 'imap.gmail.com'
USERNAME = 'email'
PASSWORD = 'password'
ssl = False
server = IMAPClient(HOST, use_uid=True, ssl=ssl)
server.login(USERNAME, PASSWORD)
server.select_folder('INBOX')
print ('success')
I just added the 'success' at the end to make sure it worked, I'm using imap here but I tried pop which seems to be more confusing.
When I run this code i get this.
Traceback (most recent call last):
File "C:/Users/Yousef/Desktop/parser.py", line 8, in <module>
server = IMAPClient(HOST, use_uid=True, ssl=ssl)
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-32\lib\site-
packages\imapclient\imapclient.py", line 152, in __init__
self._imap = self._create_IMAP4()
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-32\lib\site-
packages\imapclient\imapclient.py", line 166, in _create_IMAP4
return imap4.IMAP4WithTimeout(self.host, self.port, self._timeout)
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-32\lib\site-
packages\imapclient\imap4.py", line 13, in __init__
imaplib.IMAP4.__init__(self, address, port)
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-
32\lib\imaplib.py", line 197, in __init__
self.open(host, port)
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-
32\lib\imaplib.py", line 294, in open
self.sock = self._create_socket()
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-32\lib\site-
packages\imapclient\imap4.py", line 16, in _create_socket
return socket.create_connection((self.host, self.port), self._timeout)
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-
32\lib\socket.py", line 722, in create_connection
raise err
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-
32\lib\socket.py", line 713, in create_connection
sock.connect(sa)
TimeoutError: [WinError 10060] A connection attempt failed because the
connected party did not properly respond after a period of time, or
established connection failed because connected host has failed to respond
Someone please help me with this, because this is my first time using imap/pop.
when I put ssl to true, I get this...
Traceback (most recent call last):
File "C:\Users\Yousef\Desktop\parser.py", line 8, in <module>
server = IMAPClient(HOST, use_uid=True, ssl=ssl)
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-32\lib\site-
packages\imapclient\imapclient.py", line 152, in __init__
self._imap = self._create_IMAP4()
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-32\lib\site-
packages\imapclient\imapclient.py", line 164, in _create_IMAP4
self._timeout)
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-32\lib\site-
packages\imapclient\tls.py", line 171, in __init__
imaplib.IMAP4.__init__(self, host, port)
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-
32\lib\imaplib.py", line 197, in __init__
self.open(host, port)
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-32\lib\site-
packages\imapclient\tls.py", line 177, in open
self.sock = wrap_socket(sock, self.ssl_context, host)
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-32\lib\site-
packages\imapclient\tls.py", line 144, in wrap_socket
ssl_context = create_default_context()
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-32\lib\site-
packages\imapclient\tls.py", line 127, in create_default_context
context.load_verify_locations(cadata=certs)
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-32\lib\site-
packages\backports\ssl\core.py", line 654, in load_verify_locations
self._ctx.load_verify_locations(cafile, capath)
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-32\lib\site-
packages\OpenSSL\SSL.py", line 669, in load_verify_locations
_raise_current_error()
File "C:\Users\Yousef\AppData\Local\Programs\Python\Python36-32\lib\site-
packages\OpenSSL\_util.py", line 54, in exception_from_error_queue
raise exception_type(errors)
OpenSSL.SSL.Error: []
nvm i found a solution, thanks for the help anyways.
Hi I'm using pyftpsync in order to upload new images (downloaded every day) in a online store skipping the existing ones.
From the author site I'm using this code (with my personal data of course):
from ftpsync.targets import FsTarget
from ftpsync.ftp_target import FtpTarget
from ftpsync.synchronizers import UploadSynchronizer
local = FsTarget("~/temp")
user ="joe"
passwd = "secret"
remote = FtpTarget("/temp", "example.com", username=user, password=passwd)
opts= {"force": False, "delete_unmatched": True, "verbose": 3, "dry_run" : False}
s = UploadSynchronizer(local, remote, opts,tls=True)
s.run()
This work for me correctly only if I delete the tls option, otherwise I obtain this error while connecting to my server:
Traceback (most recent call last):
File "sync.py", line 25, in <module>
s.run()
File "/media/luca/1E9C3E629C3E349D/luca/Documenti/attività/Cataloghi2/ftpsync/synchronizers.py", line 139, in run
res = self._sync_dir()
File "/media/luca/1E9C3E629C3E349D/luca/Documenti/attività/Cataloghi2/ftpsync/synchronizers.py", line 416, in _sync_dir
remote_entries = self.remote.get_dir()
File "/media/luca/1E9C3E629C3E349D/luca/Documenti/attività/Cataloghi2/ftpsync/ftp_target.py", line 310, in get_dir
self.ftp.retrlines("MLSD", _addline)
File "/usr/lib/python3.4/ftplib.py", line 466, in retrlines
resp = self.sendcmd('TYPE A')
File "/usr/lib/python3.4/ftplib.py", line 272, in sendcmd
return self.getresp()
File "/usr/lib/python3.4/ftplib.py", line 235, in getresp
resp = self.getmultiline()
File "/usr/lib/python3.4/ftplib.py", line 221, in getmultiline
line = self.getline()
File "/usr/lib/python3.4/ftplib.py", line 209, in getline
raise EOFError
EOFError
Could not remove lock file: Underlying socket connection gone (_ssl.c:1570)
Exception ignored in: <bound method FtpTarget.__del__ of <ftpsync.ftp_target.FtpTarget object at 0x7fe397ae7710>>
Traceback (most recent call last):
File "/media/luca/1E9C3E629C3E349D/luca/Documenti/attività/Cataloghi2/ftpsync/targets.py", line 70, in __del__
File "/media/luca/1E9C3E629C3E349D/luca/Documenti/attività/Cataloghi2/ftpsync/ftp_target.py", line 153, in close
File "/media/luca/1E9C3E629C3E349D/luca/Documenti/attività/Cataloghi2/ftpsync/ftp_target.py", line 187, in _unlock
File "/usr/lib/python3.4/ftplib.py", line 613, in delete
File "/usr/lib/python3.4/ftplib.py", line 271, in sendcmd
File "/usr/lib/python3.4/ftplib.py", line 198, in putcmd
File "/usr/lib/python3.4/ftplib.py", line 193, in putline
File "/usr/lib/python3.4/ssl.py", line 720, in sendall
File "/usr/lib/python3.4/ssl.py", line 681, in send
ssl.SSLError: Underlying socket connection gone (_ssl.c:1570)
It's obviously a problem related to the encryption, but I don't know how to fix it.