SSL Fail

[davidfindlay]

With a cut and paste of this example: https://github.com/slazarov/python-bittrex-websocket/blob/master/examples/ticker_updates.py

I'm getting the following:

2018-07-17 12:25:53 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr. 2018-07-17 12:25:53 - bittrex_websocket.websocket_client - INFO - cfscrape detected, will try to bypass Cloudflare if enabled. 2018-07-17 12:25:53 - bittrex_websocket.websocket_client - ERROR - Unhandled Exception = <class 'ssl.SSLError'>, Message = <[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:777)>. Auto-reconnection is disabled for unhandled exceptions. Report to https://github.com/slazarov/python-bittrex-websocket.

I tried to see if it's possible to pass in some SSL verification options, but it seems not looking at the code. Any suggestions?

[slazarov]

Paste your modified code.

[davidfindlay]

`from bittrex_websocket.websocket_client import BittrexSocket from time import sleep

def main(): class MySocket(BittrexSocket):

    def on_public(self, msg):
        name = msg['M']
        if name not in ticker_updates_container:
            ticker_updates_container[name] = msg
            print('Just received market update for {}.'.format(name))

# Create container
ticker_updates_container = {}
# Create the socket instance
ws = MySocket()
# Enable logging
ws.enable_log()
# Define tickers
tickers = ['BTC-ETH', 'BTC-NEO', 'BTC-ZEC', 'ETH-NEO', 'ETH-ZEC']
# Subscribe to ticker information
for ticker in tickers:
    sleep(0.01)
    ws.subscribe_to_exchange_deltas([ticker])

# Users can also subscribe without introducing delays during invoking but
# it is the recommended way when you are subscribing to a large list of tickers.
# ws.subscribe_to_exchange_deltas(tickers)

while len(ticker_updates_container) < len(tickers):
    sleep(1)
else:
    print('We have received updates for all tickers. Closing...')
    ws.disconnect()
    sleep(10)

if name == "main": main()`

Current code I've got.

Output:

2018-08-06 10:59:04 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr.
2018-08-06 10:59:04 - bittrex_websocket.websocket_client - INFO - cfscrape detected, will try to bypass Cloudflare if enabled.
2018-08-06 10:59:08 - bittrex_websocket.websocket_client - ERROR - 
Unhandled Exception = <class 'ssl.SSLError'>, Message = <[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:777)>.
Auto-reconnection is disabled for unhandled exceptions.
Report to https://github.com/slazarov/python-bittrex-websocket.
2018-08-06 10:59:14 - bittrex_websocket.websocket_client - ERROR - Connection timeout after 10 seconds. Sending a reconnection signal.
Exception in thread ControlQueueThread:
Traceback (most recent call last):
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/bittrex_websocket/websocket_client.py", line 80, in control_queue_handler
    self._handle_subscribe(event)
  File "/Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages/bittrex_websocket/websocket_client.py", line 180, in _handle_subscribe
    self.invokes.append({'invoke': event.invoke, 'ticker': event.payload[0][0]})
AttributeError: 'CloseEvent' object has no attribute 'invoke'

[slazarov]

Sorry for the late reply, what version are you using? Where did you pass the SSL params?

[davidfindlay]

I've just updated to 1.0.6.2 today from pip. I'm not currently passing any SSL params, so I've just copied the code from the first example here under quick start: https://github.com/slazarov/python-bittrex-websocket

2018-08-30 07:13:15 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr. 2018-08-30 07:13:15 - bittrex_websocket.websocket_client - INFO - cfscrape detected, will try to bypass Cloudflare if enabled. 2018-08-30 07:13:16 - bittrex_websocket.websocket_client - ERROR - Unhandled Exception = <class 'ssl.SSLError'>, Message = <[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:777)>. Auto-reconnection is disabled for unhandled exceptions. Report to https://github.com/slazarov/python-bittrex-websocket.

[slazarov]

Can you install the library in a clean venv?

Looks to me that requests is installed without security, i.e request[security].

On Aug 30, 2018 at 12:15 am, <David Findlay (mailto:notifications@github.com)> wrote:

I've just updated to 1.0.6.2 today from pip. I'm not currently passing any SSL params, so I've just copied the code from the first example here under quick start: https://github.com/slazarov/python-bittrex-websocket

2018-08-30 07:13:15 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr. 2018-08-30 07:13:15 - bittrex_websocket.websocket_client - INFO - cfscrape detected, will try to bypass Cloudflare if enabled. 2018-08-30 07:13:16 - bittrex_websocket.websocket_client - ERROR - Unhandled Exception = <class 'ssl.SSLError'>, Message = <[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:777)>. Auto-reconnection is disabled for unhandled exceptions. Report to https://github.com/slazarov/python-bittrex-websocket.

— You are receiving this because you commented. Reply to this email directly, view it on GitHub (https://github.com/slazarov/python-bittrex-websocket/issues/73#issuecomment-417108387), or mute the thread (https://github.com/notifications/unsubscribe-auth/AbVUG-Wz4q2d_wWvI5x0wVPvcC5TuzLBks5uVwRrgaJpZM4VSFRJ).

[davidfindlay]

Just looking to try to do that. Looking at trying to install the extra in case it wasn't there:

Requirement already satisfied: requests[security] in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (2.19.1) Requirement already satisfied: urllib3<1.24,>=1.21.1 in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from requests[security]) (1.22) Requirement already satisfied: idna<2.8,>=2.5 in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from requests[security]) (2.5) Requirement already satisfied: chardet<3.1.0,>=3.0.2 in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from requests[security]) (3.0.4) Requirement already satisfied: certifi>=2017.4.17 in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from requests[security]) (2017.7.27.1) Requirement already satisfied: cryptography>=1.3.4; extra == "security" in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from requests[security]) (2.1.4) Requirement already satisfied: pyOpenSSL>=0.14; extra == "security" in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from requests[security]) (17.5.0) Requirement already satisfied: asn1crypto>=0.21.0 in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from cryptography>=1.3.4; extra == "security"->requests[security]) (0.24.0) Requirement already satisfied: cffi>=1.7; platform_python_implementation != "PyPy" in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from cryptography>=1.3.4; extra == "security"->requests[security]) (1.11.2) Requirement already satisfied: six>=1.4.1 in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from cryptography>=1.3.4; extra == "security"->requests[security]) (1.11.0) Requirement already satisfied: pycparser in /Library/Frameworks/Python.framework/Versions/3.6/lib/python3.6/site-packages (from cffi>=1.7; platform_python_implementation != "PyPy"->cryptography>=1.3.4; extra == "security"->requests[security]) (2.18) polyaxon 0.0.33 has requirement numpy==1.13.1, but you'll have numpy 1.14.5 which is incompatible. polyaxon-schemas 0.0.15 has requirement numpy==1.13.1, but you'll have numpy 1.14.5 which is incompatible. nbconvert 5.3.1 has requirement nbformat>=4.4, but you'll have nbformat 4.3.0 which is incompatible. kubernetes 3.0.0 has requirement websocket-client<=0.40.0,>=0.32.0, but you'll have websocket-client 0.48.0 which is incompatible. bittrex-websocket 1.0.6.2 has requirement requests[security]==2.18.4, but you'll have requests 2.19.1 which is incompatible.

[davidfindlay]

Just set up a clean new install in a fresh venv, same issue:

(venv) Davids-MacBook-Pro:accounting david$ python market_monitor.py 
2018-08-30 17:25:50 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr.
2018-08-30 17:25:51 - bittrex_websocket.websocket_client - ERROR - 
Unhandled Exception = <class 'ssl.SSLError'>, Message = <[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:777)>.
Auto-reconnection is disabled for unhandled exceptions.
Report to https://github.com/slazarov/python-bittrex-websocket.

I installed requests and requests[security]. Thanks,

David

[slazarov]

Hey David, let's do the following so at least we could replicate each other: Note: I am using python3.7 in this case.

mkdir ~/test
cd ~/test
virtualenv venv/.
source venv/bin/activate
curl https://raw.githubusercontent.com/slazarov/python-bittrex-websocket/master/examples/ticker_updates.py -o ticker_updates.py
python ticker_updates.py

I get the following output, what do you get?

(venv) bash-3.2$ python ticker_updates.py
2018-08-30 12:30:21 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr.
2018-08-30 12:30:23 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [BTC-ETH].
2018-08-30 12:30:23 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [BTC-NEO].
2018-08-30 12:30:23 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [BTC-ZEC].
2018-08-30 12:30:23 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [ETH-NEO].
2018-08-30 12:30:23 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [ETH-ZEC].
Just received market update for BTC-NEO.
Just received market update for ETH-ZEC.
Just received market update for BTC-ZEC.
Just received market update for BTC-ETH.
Just received market update for ETH-NEO.
We have received updates for all tickers. Closing...
2018-08-30 12:30:25 - bittrex_websocket.websocket_client - INFO - Bittrex connection successfully closed.

[davidfindlay]

That worked. The one thing I had to do that wasn't in your instructions was pip install bittrex_websocket. After doing that, I got this:

(venv) Davids-MacBook-Pro:test david$ python ticker_updates.py
2018-08-30 19:38:14 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr.
2018-08-30 19:38:18 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [BTC-ETH].
2018-08-30 19:38:18 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [BTC-NEO].
2018-08-30 19:38:18 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [BTC-ZEC].
2018-08-30 19:38:18 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [ETH-NEO].
2018-08-30 19:38:18 - bittrex_websocket.websocket_client - INFO - Successfully subscribed to [SubscribeToExchangeDeltas] for [ETH-ZEC].
Just received market update for ETH-ZEC.
Just received market update for BTC-NEO.
Just received market update for BTC-ETH.
Just received market update for BTC-ZEC.
Just received market update for ETH-NEO.
We have received updates for all tickers. Closing...
2018-08-30 19:38:20 - bittrex_websocket.websocket_client - INFO - Bittrex connection successfully closed.

So definitely and issue with my environment, including the new one i installed. Going to try an uninstall and reinstall. Thanks for your help.

[slazarov]

Glad that it's working. Upon solving your issue, please leave a note here for future reference.

With respect to installation, check this page: https://python-bittrex-websocket-docs.readthedocs.io/en/latest/installation.html

Note: Usually the GitHub versions are slightly ahead in terms of commits than the PyPi versions..

[Crimees]

Hi there,

I don't have the same error, but I feel it's relevant to this topic

One thing to note - I am using commit I followed your above instructions and ran python ticker_updates.py and got this

(venv) tapestry140:collina bogdan.culda$ venv/bin/python3 ticker_updates.py 
2018-08-30 17:01:49 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr.
2018-08-30 17:01:49 - bittrex_websocket.websocket_client - INFO - cfscrape detected, will try to bypass Cloudflare if enabled.
2018-08-30 17:01:50 - bittrex_websocket.websocket_client - ERROR - 
Unhandled Exception = <class 'gevent.hub.LoopExit'>, Message = <('This operation would block forever', <Hub at 0x105b54f20 select pending=0 ref=0>)>.
Auto-reconnection is disabled for unhandled exceptions.
Report to https://github.com/slazarov/python-bittrex-websocket.
2018-08-30 17:01:59 - bittrex_websocket.websocket_client - ERROR - Connection timeout after 10 seconds. Sending a reconnection signal.
Exception in thread ControlQueueThread:
Traceback (most recent call last):
  File "/usr/local/Cellar/python3/3.6.3/Frameworks/Python.framework/Versions/3.6/lib/python3.6/threading.py", line 916, in _bootstrap_inner
    self.run()
  File "/usr/local/Cellar/python3/3.6.3/Frameworks/Python.framework/Versions/3.6/lib/python3.6/threading.py", line 864, in run
    self._target(*self._args, **self._kwargs)
  File "/Users/bogdan.culda/Desktop/workspace/collina/venv/lib/python3.6/site-packages/bittrex_websocket/websocket_client.py", line 80, in control_queue_handler
    self._handle_subscribe(event)
  File "/Users/bogdan.culda/Desktop/workspace/collina/venv/lib/python3.6/site-packages/bittrex_websocket/websocket_client.py", line 182, in _handle_subscribe
    self.invokes.append({'invoke': event.invoke, 'ticker': identify_payload(event.payload)})

Any thougths ? Thanks

[Crimees]

OK my mistake - I've recreated my environment from scratch and it's fixed now.

[davidfindlay]

I've not yet solved this, but I've noted something towards it. The virtualenv command seems to have set up a python 2.7 environment, and then doing pip install bittrex-websocket installed everything I needed. When I'm trying to do my actual development environment, I'm creating it with python3 -m venv venv. This creates a python 3.6 environment. In there if I run pip install bittrex-websocket, I get the issue I've had all along. So some dependancy that is needed to get this to work in python 3 seems to be missing. Not sure what it is yet though.

[Crimees]

Forgot to mention, I used python3 / pip3 to install everything as well.

[g0tzz]

has anyone solved this? I'm getting the same error since yesterday... Didn't change anything.

SSL handshake failed on verifying the certificate protocol: <asyncio.sslproto.SSLProtocol object at 0x14434D90> transport: <_SelectorSocketTransport fd=1572 read=polling write=<idle, bufsize=0>> Traceback (most recent call last): File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 625, in _on_handshake_complete raise handshake_exc File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 189, in feed_ssldata self._sslobj.do_handshake() File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\ssl.py", line 763, in do_handshake self._sslobj.do_handshake() ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1051) SSL error in data received

[slazarov]

Run it in a clear venv. You shouldn’t be getting asyncio errors, this library does not support asyncio.

[g0tzz]

oh sry, I'm using bittrex-websocket-aio. Wrong thread ...

I tried running it in a clear env, I get the same thing. Literally didn't change or do anything in the past 2 days. Tried running it last night and got this. Also, reinstalled python to 3.7.2, same

Complete error:

SSL handshake failed on verifying the certificate protocol: <asyncio.sslproto.SSLProtocol object at 0x12D09CF0> transport: <_SelectorSocketTransport fd=1336 read=polling write=<idle, bufsize=0>> Traceback (most recent call last): File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 625, in _on_handshake_complete raise handshake_exc File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 189, in feed_ssldata self._sslobj.do_handshake() File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\ssl.py", line 763, in do_handshake self._sslobj.do_handshake() ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1056) SSL error in data received protocol: <asyncio.sslproto.SSLProtocol object at 0x12D09CF0> transport: <_SelectorSocketTransport closing fd=1336 read=idle write=<idle, bufsize=0>> Traceback (most recent call last): File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 526, in data_received ssldata, appdata = self._sslpipe.feed_ssldata(data) File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 189, in feed_ssldata self._sslobj.do_handshake() File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\ssl.py", line 763, in do_handshake self._sslobj.do_handshake() ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1056) Exception in thread SocketConnectionThread: Traceback (most recent call last): File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\threading.py", line 917, in _bootstrap_inner self.run() File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\threading.py", line 865, in run self._target(*self._args, **self._kwargs) File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\site-packages\bittrex_websocket\websocket_client.py", line 82, in _connection_handler self.connection.conn.start() File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\site-packages\signalr_aio_connection.py", line 36, in start self.transport.start() File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\site-packages\signalr_aio\transports_transport.py", line 47, in start self.ws_loop.run_until_complete(self.socket(self.ws_loop)) File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\base_events.py", line 584, in run_until_complete return future.result() File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\site-packages\signalr_aio\transports_transport.py", line 59, in socket loop=loop) as self.ws: File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\site-packages\websockets\py35\client.py", line 2, in aenter return await self File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\site-packages\websockets\py35\client.py", line 12, in await_impl__ transport, protocol = await self._creating_connection File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\base_events.py", line 986, in create_connection ssl_handshake_timeout=ssl_handshake_timeout) File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\base_events.py", line 1014, in _create_connection_transport await waiter File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 526, in data_received ssldata, appdata = self._sslpipe.feed_ssldata(data) File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\asyncio\sslproto.py", line 189, in feed_ssldata self._sslobj.do_handshake() File "C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\ssl.py", line 763, in do_handshake self._sslobj.do_handshake() ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1056)

[slazarov]

Anyways try running it in a clean venv. Also can you try a Linux/OS X env to see it it works?

On Jan 20, 2019 at 3:14 pm, <goshetovan (mailto:notifications@github.com)> wrote:

oh sry, I'm using bittrex-websocket-aio. Wrong thread ...

— You are receiving this because you commented. Reply to this email directly, view it on GitHub (https://github.com/slazarov/python-bittrex-websocket/issues/73#issuecomment-455865607), or mute the thread (https://github.com/notifications/unsubscribe-auth/AbVUG_-l-DKaaqc3ApObWdeg0zeAvIeCks5vFGvNgaJpZM4VSFRJ).

[g0tzz]

I tried running it in a clear venv, same results. What could be the reason for sudden certificate error? I guess it is a local issue, but really don't know where to start searching. The command that lists the python certificates path gives this:

python -c "import ssl; print(ssl.get_default_verify_paths())" DefaultVerifyPaths(cafile=None, capath=None, openssl_cafile_env='SSL_CERT_FILE', openssl_cafile='C:\Program Files (x86)\Common Files\SSL/cert.pem', openssl_capath_env='SSL_CERT_DIR', openssl_capath='C:\Program Files (x86)\Common Files\SSL/certs')

These directories don't exist.

[g0tzz]

It seems that this made it work again:

(1) I created two new user environment variables:

1. SSL_CERT_DIR with path to C:\Program Files (x86)\Common Files\SSL\certs
2. SSL_CERT_FILE C:\Program Files (x86)\Common Files\SSL/cert.pem

(2) Created SSL directory in C:\Program Files (x86)\Common Files\ (3) Created certs directory in C:\Program Files (x86)\Common Files\SSL (4) installed certifi with pip install certifi (5) Found the pem file from certifi:

import certifi certifi.where() 'C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\site-packages\certifi\cacert.pem'

(6) Copied the cacert.pem file to C:\Program Files (x86)\Common Files\SSL/ directory. (7) Changed its name to cert.pem

I don't know much about certificates or SSL, but it seems that python somehow lost its information about certificates.

Now it works, cheers!

[slazarov]

The library is self contained, you actually don’t have to install any dependencies on your own. Glad it started working though.

On Jan 20, 2019 at 4:22 pm, <goshetovan (mailto:notifications@github.com)> wrote:

It seems that this made it work again:

I created two new user environment variables: (1)

SSL_CERT_DIR with path to C:\Program Files (x86)\Common Files\SSL\certs

SSL_CERT_FILE C:\Program Files (x86)\Common Files\SSL/cert.pem

(2) Created SSL folder in C:\Program Files (x86)\Common Files (3) Created certs folder in C:\Program Files (x86)\Common Files\SSL (4) installed certifi with pip install certifi (5) Found the pem file from certifi:

import certifi certifi.where() 'C:\Users\gos\AppData\Local\Programs\Python\Python37-32\lib\site-packages\certifi\cacert.pem'

(6) Copied the cacert.pem file to C:\Program Files (x86)\Common Files\SSL/ directory. (7) Changed its name to cert.pem

I don't know much about certificates or SSL, but it seems that python somehow lost its information about certificates.

Now it works, cheers!

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[mkang1234]

I'm getting the same error message as well. I tried running the example ticker_updates.py and get the following error messages.

I also created a new venv, and did pip install bittrex_websocket. Still getting the same error message.

python ticker_updates.py 2019-01-21 20:12:49 - bittrex_websocket.websocket_client - INFO - Establishing connection to Bittrex through https://socket.bittrex.com/signalr. 2019-01-21 20:12:50 - bittrex_websocket.websocket_client - ERROR - Unhandled Exception = <class 'ssl.SSLError'>, Message = <[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:748)>. Auto-reconnection is disabled for unhandled exceptions. Report to https://github.com/slazarov/python-bittrex-websocket. 2019-01-21 20:12:59 - bittrex_websocket.websocket_client - ERROR - Connection timeout after 10 seconds. Sending a reconnection signal. Exception in thread ControlQueueThread: Traceback (most recent call last): File "C:\Users\michael.kang\AppData\Local\Programs\Python\Python36\lib\threading.py", line 916, in _bootstrap_inner self.run() File "C:\Users\michael.kang\AppData\Local\Programs\Python\Python36\lib\threading.py", line 864, in run self._target(*self._args, **self._kwargs) File "C:\Users\michael.kang\AppData\Local\Programs\Python\Python36\lib\site-packages\bittrex_websocket\websocket_client.py", line 80, in control_queue_handler self._handle_subscribe(event) File "C:\Users\michael.kang\AppData\Local\Programs\Python\Python36\lib\site-packages\bittrex_websocket\websocket_client.py", line 184, in _handle_subscribe self.invokes.append({'invoke': event.invoke, 'ticker': identify_payload(event.payload)}) AttributeError: 'CloseEvent' object has no attribute 'invoke'

[stanith1]

I've suddenly started getting this too, have had my program running 24/7 for months and months without issue until now. Very strange! Haven't changed my python env in any way recently either.

[stanith1]

I can confirm that the steps provided by @goshetovan appear to fix the problem for me. Perhaps it's an issue with the default SSL certificates, I recall seeing a similar issue in the CCXT library.

[mkang1234]

I can confirm that the steps provided by @goshetovan appear to fix the problem for me. Perhaps it's an issue with the default SSL certificates, I recall seeing a similar issue in the CCXT library.

Thanks. I'll try those steps as well.

[slazarov]

I will look into this. Glad you found a workaround.

[littlekfc]

@slazarov The SSL issue for python2.7 could be fixed by passing sslopt parameter with ssl.CERT_NONE.

    self.ws = create_connection(ws_url,
                             header=self.__get_headers(),
                             cookie=self.__get_cookie_str(),
                             sslopt={"cert_reqs": ssl.CERT_NONE},
                             enable_multithread=True) 

You can update your signalr library to solve the SSL issue. Just update file in signalr/transports/_ws_transport.py. btw, do not forget import ssl.

Thanks for your work for bittrex websocket!