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How can web browser switch to the next alive SWG proxy server smoothly by wpad.dat proxy script quickly/seamlessly?

  • 1.  How can web browser switch to the next alive SWG proxy server smoothly by wpad.dat proxy script quickly/seamlessly?

    Posted Mar 01, 2015 10:22 PM

    Hi,

    Web brower can switch to the next alive SWG proxy server by PAC file.

    wpad.dat file of web browser contains a JavaScript function “FindProxyForURL()” to determine the address of SWG server. By returning the multiple SWG proxy servers of FindProxyForURL(), for example :

    return "PROXY proxy1.example.com:8080; PROXY failover.example.com:8080".

    Web browser will use failover.example.com as the secondary SWG proxy when proxy1.example.com is down.

    However, it takes around 20 seconds to switch to failover.example.com.

    Is there any failover implementation approach of SWG to achieve quick failover result ?

    Best Regards

    Mike



  • 2.  RE: How can web browser switch to the next alive SWG proxy server smoothly by wpad.dat proxy script quickly/seamlessly?

    Broadcom Employee
    Posted Mar 02, 2015 02:51 PM

    Make sure to also disable proxy auto caching so your browser won't cache the one proxy's info and stop checking for other proxies.

    http://support.microsoft.com/kb/271361