"PROXY proxy1:3128; proxy2:8080" 

     "PROXY proxy1:3128; proxy2:8080".

Hello, We are using a PAC-File. In the Function: FindProxyForURL(url, host) you return the Proxy. We are returning the Value: "PROXY proxy1:3128; proxy2:8080" How Firefox determ wich Proxy is now active? We see that Firefox often takes the fallback Proxy. Which Hello, We are using a PAC-File. In the Function: FindProxyForURL(url, host) you return the Proxy. We are returning the Value: "PROXY proxy1:3128; proxy2:8080". We see that Firefox often takes the fallback Proxy. The connection via the Fallback proxy is much slower than the connection via the original proxy.  My Questions: How does Firefox recognize which Proxy is now active? Is there away to debug the Proxy Selection? Can I give a priority to a Proxy? Kind regards / Mit freundlichen Grüßen     Bernd Wollny Proxy Support Team