Firefox pac file

The firefox is really a fabulous browser, and I really appreciate the brilliant guys working on it. But here's the problem: the PAC file does not seem to be working. This PAC file contains a list of domains needed by the browser to decide which domain should be accessed directly, which domain should be accessed through the proxy server.

However, with firefox, I can not use this proxy server. I've tried another PAC file, proxy. When I set the proxy server to But once the PAC file is involved, firefox cannot use the proxy server anymore. I think there might be some problem when firefox parses the PAC file. Any help? One possible solution is to run an extremely small web-server on your computer and host the pac file using that.

This thread over at Stack Overflow seems to recommend Mongoose. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Learn more. Asked 4 years ago. Active 4 years ago. Viewed 8k times. Improve this question. Add a comment. If there are hosts such as the main Web server that belong to the local domain but are outside the firewall and are only reachable through the proxy server, those exceptions can be handled using the localHostOrDomainIs function:.

The above example will use the proxy for everything except local hosts in the mozilla. Be careful to note the parentheses around the or expression before the and expression to achieve the above-mentioned efficient behavior. This example will work in an environment where the internal DNS server is set up so that it can only resolve internal host names, and the goal is to use a proxy only for hosts that aren't resolvable:.

The above requires consulting the DNS every time; it can be grouped intelligently with other rules so that DNS is consulted only if other rules do not yield a result:. In this example all of the hosts in a given subnet are connected-to directly, others are connected through the proxy:. Again, use of the DNS server in the above can be minimized by adding redundant rules in the beginning:. This example is more sophisticated. There are four 4 proxy servers; one of them is a hot stand-by for all of the other ones, so if any of the remaining three goes down the fourth one will take over.

Furthermore, the three remaining proxy servers share the load based on URL patterns, which makes their caching more effective there is only one copy of any document on the three servers - as opposed to one copy on each of them.

The load is distributed like this:. All local accesses are desired to be direct. All proxy servers run on the port they don't need to, you can just change your port but remember to modify your configuations on both side.

As an example, to set different proxies based on the protocol the startsWith function can be used:. Note: The same can be accomplished using the shExpMatch function described earlier. Note: The autoconfig file can be output by a CGI script. Usage of isInNet , isResolvable and dnsResolve functions should be carefully considered, as they require the DNS server to be consulted.

All the other autoconfig-related functions are mere string-matching functions that don't require the use of a DNS server. Most of the time these functions are not necessary to achieve the desired result. Proxy auto-config was introduced into Netscape Navigator 2. Open-sourcing Netscape eventually lead to Firefox itself. These utilities are found in many other open-source systems including Chromium. Edit the nsProxyAutoConfig. Append your existing PAC file the one from step 1 to this file.

There is no need to type anything in the URL field that is currently ignored till bug is fixed Restart your browser. You should see a console message that says something like Registering Proxy Auto Config a Javascript component!

Last modified May 6, Document History. See bug Comments and feedback are always welcome. A significant section of this document is work in progress and is likely to be updated in future.