Standard http proxy environment variable evaluation

["Cédric Blomart (FOD Economie - SPF Economie)" <Ce...@economie.fgov.be>]

Hello,

By looking at this over the internet I don't find much informations.
Apparently the sole reliable way to configure proxy usage is trough ".m2/settings.xml" which annoys me when using CI/CD and docker behind proxies.

We do set standard environment variables for proxies in the builds that needs it. But maven doesn't use these variables.

I would like to lookup if it would be possible to evaluate http_proxy or https_proxy environment variables to fill in proxy settings.


I didn't find any opened Jira about that altought there are a lot ramblings about using java properties ("-Dhttp.proxyHost" ...).

Any remarks, toughts about this?

Cédric

Re: Standard http proxy environment variable evaluation

[Michael Osipov <mi...@apache.org>]

Am 2019-10-10 um 12:08 schrieb Cédric Blomart (FOD Economie - SPF Economie):
> Hello,
> 
> By looking at this over the internet I don't find much informations.
> Apparently the sole reliable way to configure proxy usage is trough ".m2/settings.xml" which annoys me when using CI/CD and docker behind proxies.
> 
> We do set standard environment variables for proxies in the builds that needs it. But maven doesn't use these variables.
> 
> I would like to lookup if it would be possible to evaluate http_proxy or https_proxy environment variables to fill in proxy settings.
> 
> 
> I didn't find any opened Jira about that altought there are a lot ramblings about using java properties ("-Dhttp.proxyHost" ...).
> 
> Any remarks, toughts about this?

The reason why this is not done is because Java is not C, thus not using 
environment variables.

There are several ways to solve this:

* Introduce a custom route planner which will read the vars. HttpClient 
does not have a proxy selector abstraction
* Set the JVMs default proxy selector to your custom implemenation and 
HttpClient will pick it up automatically.

All of this is Maven Wagon related

Michael


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