How to set the proxy configuration for a headless Eclipse application on Windows

Question

I have a script which needs to call one of the existing, headless Eclipse applications (example: the p2 director application) which use the Proxy API of org.eclipse.core.net for configuring its requests to HTTP servers.

On Linux, I can configure the Eclipse Proxy API by setting the environment variables http_proxy and https_proxy.

Is there similar solution for configuring the proxies from the command line in Windows?

---

I've tried to set HTTP proxy configuration properties specified by Java (http.proxyHost, http.proxyPort, etc.) but this doesn't work. Setting the properties just results in a log entry from Eclipse informing me that the system properties are overwritten with the values from the preferences:

!ENTRY org.eclipse.core.net 1 0 2013-08-09 15:21:19.413
!MESSAGE System property http.proxyHost has been set to proxy by an external source. This value will be overwritten using the values from the preferences

!ENTRY org.eclipse.core.net 1 0 2013-08-09 15:21:19.414
!MESSAGE System property http.proxyPort has been set to 8080 by an external source. This value will be overwritten using the values from the preferences

So another option would be a headless application which allows to configure preferences. Does this application exist (preferrably as part of the standard Eclipse distributions)?

Answer 1

Proxy preferences for Eclipse applications are stored in the file

<eclipse-installation>/configuration/.settings/org.eclipse.core.net.prefs

So either you edit the settings via the Eclipse preferences UI (General / Network Connections) and then copy that file to your headless application, or you create/edit that manually:

eclipse.preferences.version=1
nonProxiedHosts=localhost|127.0.0.1
org.eclipse.core.net.hasMigrated=true
proxiesEnabled=true
proxyData/HTTP/hasAuth=false
proxyData/HTTP/host=<proxy.your.org>
proxyData/HTTP/port=<port>
proxyData/HTTPS/hasAuth=false
proxyData/HTTPS/host=<proxy.your.org>
proxyData/HTTPS/port=<port>
# - Set SOCKS proxy only if neccessary -
# proxyData/SOCKS/hasAuth=false
# proxyData/SOCKS/host=<proxy.your.org>
# proxyData/SOCKS/port=<port>
systemProxiesEnabled=false

HTH.