Python's requests "Missing dependencies for SOCKS support" when using SOCKS5 from Terminal

Question

I'm trying to interact with an API from my Python 2.7 shell using a package that relies on Python's requests. Thing is the remote address is blocked by my network (university library).

So to speak to the API I do the following:

~$ ssh -D 8080 [email protected]

And then, in new terminal, in local computer:

~$ export http_proxy=socks5://127.0.0.1:8080 https_proxy=socks5://127.0.0.1:8080

Then I run the program in Python console but fails:

~$ python
>>> import myscript
>>> id = '1213'
>>> token = 'jd87jd9'
>>> connect(id,token)

File "/home/username/.virtualenvs/venv/local/lib/python2.7/site-packages/requests/sessions.py", line 518, in post
    return self.request('POST', url, data=data, json=json, **kwargs)
  File "/home/username/.virtualenvs/venv/local/lib/python2.7/site-packages/requests/sessions.py", line 475, in request
    resp = self.send(prep, **send_kwargs)
  File "/home/username/.virtualenvs/venv/local/lib/python2.7/site-packages/requests/sessions.py", line 585, in send
    r = adapter.send(request, **kwargs)
  File "/home/username/.virtualenvs/venv/local/lib/python2.7/site-packages/requests/adapters.py", line 370, in send
    conn = self.get_connection(request.url, proxies)
  File "/home/username/.virtualenvs/venv/local/lib/python2.7/site-packages/requests/adapters.py", line 273, in get_connection
    proxy_manager = self.proxy_manager_for(proxy)
  File "/home/username/.virtualenvs/venv/local/lib/python2.7/site-packages/requests/adapters.py", line 169, in proxy_manager_for
    **proxy_kwargs
  File "/home/username/.virtualenvs/venv/local/lib/python2.7/site-packages/requests/adapters.py", line 43, in SOCKSProxyManager
    raise InvalidSchema("Missing dependencies for SOCKS support.")
requests.exceptions.InvalidSchema: Missing dependencies for SOCKS support.

This excerpt is from the adapters.py requests module:

> try:
>     from .packages.urllib3.contrib.socks import SOCKSProxyManager except ImportError:
>     def SOCKSProxyManager(*args, **kwargs):
>         raise InvalidSchema("Missing dependencies for SOCKS support.")

Now problem seems to be originated in urllib3's SOCKSProxyManager.

So I read you can use SOCKSProxyManager with SOCKS5 if you have install PySocks or you do a pip install urllib3[socks]

Alas, I tried both PySocks and urllib3 with Socks without any success.

Any idea of another workaround?

EDIT:

I also tried pip install requests[socks] (that's requests 2.10.0 with Socks support) and I am getting this:

  File "/home/username/.virtualenvs/venv/local/lib/python2.7/site-packages/requests/adapters.py", line 467, in send
    raise ConnectionError(e, request=request)
requests.exceptions.ConnectionError: SOCKSHTTPSConnectionPool(host='api-server.com', port=443): Max retries exceeded with url: /auth (Caused by NewConnectionError('<requests.packages.urllib3.contrib.socks.SOCKSHTTPSConnection object at 0x95c7ccc>: Failed to establish a new connection: SOCKS5 proxy server sent invalid data',))

Solution 1

I had the same issue with conda and requests 2.11 (I work in a Ubuntu VM behind a corporate proxy).

This issue helped me. I changed my environment variable all_proxy (which was originally set to a SOCK proxy socks://....) to the https version in my .bashrc file :

export all_proxy="https://<proxy>:<port>/"

and now it works.

Solution 2

This means that requests is using socks as a proxy and that socks is not installed.

Just run pip install pysocks

Solution 3

In Ubuntu you can run :
unset all_proxy && unset ALL_PROXY

Solution 4

I added the requests[socks]>=2.10.0 to my requirements.txt, updated my https_proxy env variable, and came across the above error. I then tried a regular pip install requests[socks] after resetting the https_proxy env variable and PySocks was installed. I'm not sure why the pip install -Ur requirements.txt failed to install PySocks the first time.

After that, I was able to make a request in python using the socks proxy.

It looks like your socks server is not behaving. I would see if you, or your admin, could watch the logs and see what the machine is complaining about.

Solution 5

I also stumbled upon this issue while doing a simple pip install -U pip, but information I found from your question helped me resolved my issue. I am on Mac OS X.

As you have pointed out, adapters.py from the requests package was trying to do this:

try:
    from .packages.urllib3.contrib.socks import SOCKSProxyManager
except ImportError:
    def SOCKSProxyManager(*args, **kwargs):
        raise InvalidSchema("Missing dependencies for SOCKS support.")

So it seems sensible to look for the place of definition of SOCKSProxyManager. It seems to be in a "contrib" module in urllib3 and not installed alongside urllib3 by default. The docstring of that module says:

This module contains provisional support for SOCKS proxies from within
urllib3. This module supports SOCKS4 (specifically the SOCKS4A variant) and
SOCKS5. To enable its functionality, either install PySocks or install this
module with the ``socks`` extra.

The instructions of the pip docs says this about setuptools extras:

6. Install a package with setuptools extras.

$ pip install SomePackage[PDF]
$ pip install git+https://git.repo/some_pkg.git#egg=SomePackage[PDF]
$ pip install SomePackage[PDF]==3.0
$ pip install -e .[PDF]==3.0  # editable project in current directory

So I followed the instructions and did:

$ pip install 'urllib3[socks]'

I then continued with pip install -U pip, which was what I was supposed to be doing, and now it works.

I wonder how many people got tricked-up by the square brackets, as Bash and other shells often treat it as a special character, which needs to be escaped for it to reach the invoked program (in this case, pip).

View more solutions

Comments

[BringBackCommodore64]

I'll test it your suggestion but as soon as I have the chance. For the moment I decided to work from elsewhere (not from the University). And I'll let you know. For the moment I'll upvote your answer. Thanks, Kirk!

[BringBackCommodore64]

Thanks! I totally ditched working from the library so I can't test. But I trust you!

[BringBackCommodore64]

Unfortunately I resolved the issue by not going to the library. So I can't give you feedback. But thanks anyway! :)

[BringBackCommodore64]

Good to know my issue helped you resolve yours. And thankfully yours will solve someone else's issue too!

[Thane Brimhall]

Yes, this was a non-obvious issue. For some reason, this module was not correctly installed via requirements.txt

[JinSnow]

pip install request[socks] did NOT work, but pip install -U requests[socks] worked

[JasonWayne]

This works for me, however, we need to close the proxy first to install this module.

[Jesbus]

Thank you, your answer led me to fix my issue :)

[Jiang YD]

but I AM using socks proxy

[m3nda]

-U --upgrade option alone will not work if you had some previous package installed. pip install -U requests[socks] --ignore-installed will work.

[blubberdiblub]

@erm3nda --force-reinstall is somewhat cleaner than --ignore-installed, as it will clean up a (potentially different) previously installed package first. I use --ignore-installed only when I want to locally override a package that is installed system-wide (which can happen inside a virtual env set up with --system-site-packages).

[Pavel Komarov]

Hint for noobs: echo $all_proxy to see what your machine is currently set to. It's probably socks://<proxy>:<port>/, so all you have to do is replace the prefix.

[benzkji]

either this, or pip install pysocks

[Erik Aronesty]

this fix it for me. thanks. even with all the deps installed, this is the error you will get if the socks:// prefix is used

[iopq]

That's the problem, if pip install doesn't go through the proxy how am I supposed to install pysocks

[a3k]

Wow, for the second time I face that problem, googling, and reaching your answer which is the solution I always forget :) If only stackoverflow allows upvoting multi times, I'd upvote this thousand times :)

[CS QGB]

TypeError("__init__() got an unexpected keyword argument 'cert_file'")

[nisc]

Well, this disables the proxy, which is not what OP asked for.

[Admin]

As it’s currently written, your answer is unclear. Please edit to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers in the help center.

[hgg end]

This method works well, when I build docker image under setting vpn proxy.

[aafirvida]

In 2022 This is still the correct answer to the question.

[sify]

you can install pysocks using tarball first