# SSL problem GitLab webhook

**URL:** <https://forum.mattermost.com/t/ssl-problem-gitlab-webhook/1598>\
**Category:** Troubleshooting\
**Created:** [May 30, 2016, 4:10pm UTC](https://forum.mattermost.com/t/ssl-problem-gitlab-webhook/1598 "2016-05-30T16:10:14Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![daveops1](https://avatars.discourse-cdn.com/v4/letter/d/d78d45/32.png) [@daveops1](https://forum.mattermost.com/u/daveops1)\
**Post date:** [May 30, 2016, 4:10pm UTC](https://forum.mattermost.com/t/ssl-problem-gitlab-webhook/1598/1 "2016-05-30T16:10:14Z")

</div>

Hi all,

I’m trying to set up a webhook so we get a message whenever a comment or a merge request are added.

Based on the instructions [here](https://github.com/NotSqrt/mattermost-integration-gitlab) I created my own docker container.

This is the Dockerfile

```
FROM python:2.7.11

MAINTAINER "David "

RUN pip install git+https://github.com/NotSqrt/mattermost-integration-gitlab

EXPOSE 5000

ENTRYPOINT mattermost_gitlab $MATTERMOST_WEBHOOK_URL

```

When I connect GitLab with this container and click on `Test webhook` it seems to work OK,

I see the following on the log:

`10.0.0.19 - - [30/May/2016 15:48:02] "POST /new_event HTTP/1.1" 200 -`

However, when I add an actual comment it fails and I see the following:

```
Traceback (most recent call last):
  File "/usr/local/lib/python2.7/site-packages/mattermost_gitlab/server.py", line 46, in new_event
    post_text(text)
  File "/usr/local/lib/python2.7/site-packages/mattermost_gitlab/server.py", line 92, in post_text
    resp = requests.post(app.config['MATTERMOST_WEBHOOK_URL'], headers=headers, data=json.dumps(data))
  File "/usr/local/lib/python2.7/site-packages/requests/api.py", line 109, in post
    return request('post', url, data=data, json=json, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/requests/api.py", line 50, in request
    response = session.request(method=method, url=url, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/requests/sessions.py", line 468, in request
    resp = self.send(prep, **send_kwargs)
  File "/usr/local/lib/python2.7/site-packages/requests/sessions.py", line 576, in send
    r = adapter.send(request, **kwargs)
  File "/usr/local/lib/python2.7/site-packages/requests/adapters.py", line 433, in send
    raise SSLError(e, request=request)
SSLError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:590)
10.0.0.19 - - [30/May/2016 15:53:35] "POST /new_event HTTP/1.1" 200 -

```

To give you some more information, Mattermost is behind a reverse proxy.

What am I doing wrong?

Many thanks.

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<div class="post-metadata">

**Author:** ![crspeller](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.mattermost.com/crspeller/32/2605_2.png) [@crspeller](https://forum.mattermost.com/u/crspeller)\
**Post date:** [June 1, 2016, 12:07pm UTC](https://forum.mattermost.com/t/ssl-problem-gitlab-webhook/1598/2 "2016-06-01T12:07:11Z")

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Looks like the webhook is trying to connect to the server but it is using a self signed certificate. If your OK with it being insecure you can set the option “Enable Insecure Outgoing Connections” under “Service Settings” to true. Otherwise you need to setup a proper SSL certificate.

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<div class="post-metadata">

**Author:** ![daveops1](https://avatars.discourse-cdn.com/v4/letter/d/d78d45/32.png) [@daveops1](https://forum.mattermost.com/u/daveops1)\
**Post date:** [June 6, 2016, 11:52am UTC](https://forum.mattermost.com/t/ssl-problem-gitlab-webhook/1598/3 "2016-06-06T11:52:55Z")

</div>

We have a proper certificate. However, our CA (Comodo) doesn’t seem to be whitelisted, or at least it’s not being picked up correctly.

I got some information on the [webhook’s GitHub](https://github.com/NotSqrt/mattermost-integration-gitlab/issues/9) and made it work in the end.

Thanks.