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From "Andrew Phillips (JIRA)" <j...@apache.org>
Subject [jira] [Created] (JCLOUDS-1075) Make proxy configuration logic and settings clearer and more in line with Java conventions
Date Tue, 09 Feb 2016 00:08:18 GMT
Andrew Phillips created JCLOUDS-1075:
----------------------------------------

             Summary: Make proxy configuration logic and settings clearer and more in line
with Java conventions
                 Key: JCLOUDS-1075
                 URL: https://issues.apache.org/jira/browse/JCLOUDS-1075
             Project: jclouds
          Issue Type: Improvement
          Components: jclouds-core
    Affects Versions: 1.9.2
            Reporter: Andrew Phillips
            Assignee: Andrew Phillips
             Fix For: 2.0.0


>From the description of https://github.com/jclouds/jclouds/pull/914:

In the absence of any special jclouds.*proxy* settings, jclouds should respect the normal
JVM conventions for proxy detection, such as the java.net.httpProxyHost property. For it to
default to no proxy, unlike everything else in java, is surprising. Previously jclouds only
looked for the JVM proxy if jclouds.use-system-proxies was set, and then in a cumbersome way:

* jclouds.use-system-proxies tried to set java.net.useSystemProxy but that is read once at
startup and subsequently ignored by the JVM so it had little effect
* so the effect of jclouds.use-system-proxies was effectively to tell jclouds to use the default
proxy chosen by the JVM looking at the java.net.* properties, not necessarily the OS proxy
referred to by java.net.useSystemProxy
* the default value of jclouds.use-system-proxies was taken from java.net.useSystemProxy and
so while that succeeds in causing java.net.useSystemProxy to take effect, it was succeeding
in a strange accidental way: the only way for the normal java.net.httpProxyHost and others
to take effect was to set jclouds.use-system-proxies=true but make sure java.net.useSystemProxy=false

This adds explicit control over whether the JVM default proxy is usable (true by default),
and switches the precedence so that if a user specifies a jclouds.proxy-host then it is used
-- irrespective of whether any other system proxies or jvm proxies are specified.

I think this is more what a user would expect if they do need to set special proxy settings
for jclouds to use. More importantly in most cases they can now just set JVM proxy settings
and the right thing will happen.



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