JDK-6929435 : Java plugin + Firefox does not pick up auto proxy settings from Java control panel
  • Type: Bug
  • Component: deploy
  • Sub-Component: plugin
  • Affected Version: 6u18
  • Priority: P3
  • Status: Closed
  • Resolution: Fixed
  • OS: windows_xp
  • CPU: x86
  • Submitted: 2010-02-24
  • Updated: 2010-09-16
  • Resolved: 2010-06-19
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6u21 b02Fixed 7Fixed
Related Reports
Duplicate :  
function FindProxyForURL(url,host) {
		return "PROXY proxy1:8080";

Using the simple proxy.pac file above, I see the following behavior in Java 1.6.0_18-b07 on both Windows XP and 2000, Firefox 3.5.0 and ff 3.0.18 (but not in IE 8.0 or 6.0):
In the Java Control Panel, although the auto proxy config script was checked, the plugin used the manual proxy configuration (although it was grayed-out.)  

I understand if the plugin can't read the autoconfig script, the plugin default should be to use *DIRECT*! 

Note: If I intentionally fill in the script location incorrectly, I can see the same behavior with IE 6&8.

EVALUATION We will implement new class to handle AutoProxyHandler in both Window and Unix platform for Firefox browser, this bug is target to JRE 6u20 b02.

WORK AROUND specify pac file via firefox proxy settings, and java control panel set to use browser proxy settings