Make requests to download file in url with nameko

yuut007 · September 3, 2019, 9:53am

Hey my friend, I need your help. I try to download a file in url like (http://google.com/favicon.ico). It works well locally with (“requests” , “urllib3” , “urllib.request” ), but it doesn’t work with nameko. I can’t solve this problem. My code likes this:

from nameko.web.handlers import http
import requests

class MyService:
    name = "my_service"

    @http("POST", "/post/my")
    def do_post(self, request):
        url = "http://google.com/favicon.ico"
        r = requests.get(url, allow_redirects=True)
        print(r.status)
        open("google.ico", "wb").write(r.content)
        return u"received: {}".format(request.get_data(as_text=True))

and the error is always like this.
“wrap_socket() got an unexpected keyword argument ‘_context’”

Can anyone help me pls.

yuut007 · September 3, 2019, 9:56am

In fact, I have already tried “requests” , “urllib3” , “urllib.request” . these three libs of python 3.7.4. But They all have the same error.

And it works well in python3.7.4 without nameko.

Jakub_Borys · September 3, 2019, 12:38pm

Could you paste entire stack trace of the error here? How are you running the service?

yuut007 · September 3, 2019, 12:53pm

Thank you very much.

Traceback (most recent call last):
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/sessions.py", line 682, in send
    r = adapter.send(request, **kwargs)
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/adapters.py", line 449, in send
    timeout=timeout
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/urllib3/connectionpool.py", line 603, in urlopen
    chunked=chunked)
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/urllib3/connectionpool.py", line 344, in _make_request
    self._validate_conn(conn)
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/urllib3/connectionpool.py", line 843, in _validate_conn
    conn.connect()
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/urllib3/connection.py", line 370, in connect
    ssl_context=context)
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/urllib3/util/ssl_.py", line 355, in ssl_wrap_socket
    return context.wrap_socket(sock, server_hostname=server_hostname)
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/eventlet/green/ssl.py", line 438, in wrap_socket
    return GreenSSLSocket(sock, *a, _context=self, **kw)
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/eventlet/green/ssl.py", line 76, in __new__
    *args, **kw
TypeError: wrap_socket() got an unexpected keyword argument '_context'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/sessions.py", line 704, in send
    history = [resp for resp in gen] if allow_redirects else []
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/sessions.py", line 704, in <listcomp>
    history = [resp for resp in gen] if allow_redirects else []
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/sessions.py", line 258, in resolve_redirects
    **adapter_kwargs
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/sessions.py", line 727, in send
    raise Exception(msg)
Exception: Error on session(). Cause : wrap_socket() got an unexpected keyword argument '_context' in /Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/sessions.py L:682

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/sessions.py", line 564, in request
    resp = self.send(prep, **send_kwargs)
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/sessions.py", line 727, in send
    raise Exception(msg)
Exception: Error on session(). Cause : Error on session(). Cause : wrap_socket() got an unexpected keyword argument '_context' in /Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/sessions.py L:682 in /Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/sessions.py L:704

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/nameko/containers.py", line 392, in _run_worker
    result = method(*worker_ctx.args, **worker_ctx.kwargs)
  File "./test-nameko.py", line 29, in do_post
    r = requests.get(url, allow_redirects=True)
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/api.py", line 75, in get
    return request('get', url, params=params, **kwargs)
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/api.py", line 60, in request
    return session.request(method=method, url=url, **kwargs)
  File "/Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/sessions.py", line 569, in request
    raise Exception(msg)
Exception: Error on request(). Cause : Error on session(). Cause : Error on session(). Cause : wrap_socket() got an unexpected keyword argument '_context' in /Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/sessions.py L:682 in /Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/sessions.py L:704 in /Users/tyu/project/etl_v3/venv/lib/python3.7/site-packages/requests/sessions.py L:564
127.0.0.1 - - [03/Sep/2019 14:50:21] "POST /post/my?type=url&url=https%3A%2F%2Fwww.python.org%2Fstatic%2Fimg%2Fpython-logo.png HTTP/1.1" 500 566 0.080115

yuut007 · September 3, 2019, 12:57pm

The python file is like above named “test-nameko.py”.

I run it in shell with command : nameko run test-nameko

And I do the simple http request with insomnia(with postman has the same error)

Jakub_Borys · September 3, 2019, 2:07pm

Hi @yuut007 unfortunately looks like eventlet library which is a nameko’s dependency is the root cause of the issue here as documented here: https://github.com/eventlet/eventlet/issues/526

We have a test reproducing this issue and tracking it with: https://github.com/nameko/nameko/pull/644

Is it possible for you to use Python 3.6 in meantime?

yuut007 · September 3, 2019, 3:27pm

Thanks a million. It works with python3.6. I am willing to tracking this problem with 3.7 in the future.

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Make requests to download file in url with nameko

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