Jenkins - GitHub Enterprise API, HTTP Code -1

Question

I'm trying to use Jenkins with GitHub Enterprise. However, I keep getting HTTP Response Code -1, and message 'null'.

For repository owner/name, I've tried my own account name, account name/repo name, and then repo name, however, it had the same message.

I added my token by pressing the add credentials button, and added my token to the secret text.

I also sent the request to requestbin, which allows to analysis my http request, and it uses headers to pass the token key. I've tried the same curl command, but it works for me.

Has anyone encountered this before? Thanks

These are my settings for Jenkins and GitHub:

It doesn't work, since Jenkins complains that it cannot connect to GitHub in the logs with http error code -1, and message null.

Answer 1

I was able to solve it by upgrading to a newer Jenkins (now using 1.5) to 2.3.

Answer 2

Facts:
1. Request to requestbin works, whereas request to github.xxx.com does not work.
2. Curl request to github.xxx.com works

Assumptions:
1. Curl request was fired presumably from your local computer.If I go ahead and risk a guess, the curl command test probably was not done in the computer/server where jenkins is running from. If not, please ignore this point.
2. Github did not go crazy.
3. There was no human error

More facts:
1. Github plugin uses git client
2. Git client would return with a -1 when any error occurs. Usual convention - 0 is okay and any non zero is not okay.

Possibilities:
1. You could have hit a known issue in git client of Jenkins (may be https://issues.jenkins-ci.org/browse/JENKINS-20261) which was solved by upgrading to new version of jenkins, since jenkins upgrade requires some plugin upgrades.
2. DNS caching could be a problem in your Jenkins computer/server
3. Your Jenkins server/computer was out of your VPN for sometime and came back into VPN exactly after you completed upgrade.

Hope this helps.