Broken requests

[adotorc]

As soon as signalr is imported, normal requests queries using ssl (get/post) fail to initialize, entering in a recursion loop that ultimately makes them crash.

Steps to reproduce:

import requests
import signalr
requests.get("https://www.google.com")

Traceback here:

Traceback (most recent call last):
File "signalrRequestCrash.py", line 3, in
requests.get("https://www.google.com")
File "C:\Program Files (x86)\Python36-32\lib\site-packages\requests\api.py", line 72, in get
return request('get', url, params=params, **kwargs)
File "C:\Program Files (x86)\Python36-32\lib\site-packages\requests\api.py", line 58, in request
return session.request(method=method, url=url, **kwargs)
File "C:\Program Files (x86)\Python36-32\lib\site-packages\requests\sessions.py", line 508, in request
resp = self.send(prep, **send_kwargs)
File "C:\Program Files (x86)\Python36-32\lib\site-packages\requests\sessions.py", line 618, in send
r = adapter.send(request, **kwargs)
File "C:\Program Files (x86)\Python36-32\lib\site-packages\requests\adapters.py", line 440, in send
timeout=timeout
File "C:\Program Files (x86)\Python36-32\lib\site-packages\urllib3\connectionpool.py", line 601, in urlopen
chunked=chunked)
File "C:\Program Files (x86)\Python36-32\lib\site-packages\urllib3\connectionpool.py", line 346, in _make_request
self._validate_conn(conn)
File "C:\Program Files (x86)\Python36-32\lib\site-packages\urllib3\connectionpool.py", line 850, in validate_conn
conn.connect()
File "C:\Program Files (x86)\Python36-32\lib\site-packages\urllib3\connection.py", line 314, in connect
cert_reqs=resolve_cert_reqs(self.cert_reqs),
File "C:\Program Files (x86)\Python36-32\lib\site-packages\urllib3\util\ssl.py", line 269, in create_urllib3_context
context.options |= options
File "C:\Program Files (x86)\Python36-32\lib\ssl.py", line 465, in options
super(SSLContext, SSLContext).options.set(self, value)
File "C:\Program Files (x86)\Python36-32\lib\ssl.py", line 465, in options
super(SSLContext, SSLContext).options.set(self, value)
File "C:\Program Files (x86)\Python36-32\lib\ssl.py", line 465, in options
super(SSLContext, SSLContext).options.set(self, value)
[Previous line repeated 323 more times]
RecursionError: maximum recursion depth exceeded

Python 3.6.3 (32bits, Windows)
Pip freeze results:

altgraph==0.14
asn1crypto==0.23.0
certifi==2017.7.27.1
cffi==1.11.2
chardet==3.0.4
cryptography==2.1.3
Cython==0.27.3
future==0.16.0
gevent==1.2.2
greenlet==0.4.12
idna==2.6
macholib==1.8
numpy==1.13.3
pefile==2017.9.3
pycparser==2.18
PyInstaller==3.3
pypiwin32==220
pyTelegramBotAPI==3.2.1
PyYAML==3.12
requests==2.18.4
shellescape==3.4.1
signalr-client==0.0.7
six==1.11.0
sseclient==0.0.18
TA-Lib==0.4.10
urllib3==1.22
websocket-client==0.44.0

[zplizzi]

Similar problem, these four lines cause a crash (IOError: [Errno 11] Resource temporarily unavailable):

from multiprocessing import Manager
from signalr import Connection

manager = Manager()
order_books = manager.dict()

Manager uses sockets for the interprocess communication, so I assume that's how these issues are related.

[alexykot]

I've encountered same thing just now, and the solution is to import and monkey patch gevent before that. I.e.:

import gevent.monkey
gevent.monkey.patch_all()

from requests import Session
from signalr import Connection

This prevents the infinite recursion problem.