Gabber now has support for using http proxies like Squid. We support
three kinds of proxy usage. Gabber will try to automatically detect the
kind of request that works with your proxy.

- Making a CONNECT request (preferred)

  We make a "CONNECT server:port HTTP/1.0" request. This is normally
  used by browsers for https requests.
  In most proxy installations it is only allowed to connect to port 443
  (used normally by https). Therefore, I encourage the administrators of
  Jabber servers to open port 443 for Jabber connects. This can be done with
  tools like rinetd. Normally you can't do it with the 
  tag in the Jabber server config because only root can bind to this port.
  Proxy administrators who like to support connections to every Jabber server
  just have to allow CONNECTs to port 5222.

  This method has be suggested in http://jabber.org/?oid=2047 by yiminzheng.
  

- Making a PUT request

  We also can make a "PUT http://server:port/ HTTP/1.0" request. But we
  cannot send a "Content-Length" header, this is often needed by
  proxy servers.
  On the Jabber server side this is supported by version 1.4.1+.

  For information about this method see http://jabber.org/?oid=971.


- Making a POST request

  Like the PUT request but we send "POST http://server:port/ HTTP/1.0".