Default Firefox settings

Bernardo Innocenti bernie at
Thu Oct 4 09:10:01 UTC 2007

Nicolas Mailhot wrote:

> You do need to auto detect proxy settings - when a proxy is available
> most of the times you won't be allowed direct internet connection.
> The problem is firefox sucks big time when you're behind a proxy - as
> soon as the proxy is slow to answer for one tab all the others start
> being sluggish/frozen (I suppose firefox has internal locking where
> the cost of some locks is only evident in a proxy context)
> The problem is not the setting, the problem is firefox is buggy.
> That's something to report upstream.

I experienced this problem to.  My guess was that Firefox blocked while
resolving hostnames in proxy.pac JavaScript snippets like this one:

 function FindProxyForURL(url, host)
  ip = dnsResolve(host);
  if (isInNet(myIpAddress(), "", "")
    && !shExpMatch(url, "ftp://*")
    && !isInNet(ip, "", "")
    && !isInNet(ip, "", "")
    && !isInNet(ip, "", ""))
   return "PROXY";
   return "DIRECT";

 |___|  Bernardo Innocenti -
  \___\ One Laptop Per Child -

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