204598 - PAC: does not handle multiple return values correctly

Status: VERIFIED DUPLICATE of bug 84798

(Core :: Networking, defect)

Description

[Hristo Grigorov]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.3) Gecko/20030312
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.0; en-US; rv:1.3) Gecko/20030312

It is a known problem that multiple return values from a proxy auto-config (PAC)
scripts are ignored and only the first one is used. This is very inconvenient if
one wants to provide proxy fail-over solution. For example, Internet Explorer
and Opera does not have this problem. 

Reproducible: Always

Steps to Reproduce:
1. Create proxy-auto config file that return multiple values, for example: 

function FindProxyForURL(url, host)
{
   return "PROXY 192.168.0.1:8080; 192.168.0.2:8080; DIRECT";
}

2. Make the proxy at 192.168.0.1 unavailable.
3. Try to open some page

Actual Results:  
Mozilla fails with error message that the proxy server cannot be contacted.

Expected Results:  
Mozilla should try the next entry in the returned chains of servers and not fail
on the first one.

Comment 1

[Jo Hermans]

This is fixed in Mozilla 1.4b

*** This bug has been marked as a duplicate of 84798 ***

Comment 2

[benc]

Can you tell me what you searched for? The name of the bug probably should have
been improved, because we get a ton of dupes.

Comment 3

[Hristo Grigorov]

Sorry about this!

I searched for "FindProxyForURL" and "proxy auto-config". Didn't 
tried "failover" as PAC files are not only for failover but also for load 
balancing support or general proxy configuration.