This interface recieves control when an unsolicited transport
 is recieved on a transport.
[scriptable, function, uuid(99ec6696-535f-11d4-9a58-000064657374)]
interface nsISOAPTransportListener : nsISupports

Methods

 This method is invoked when an unsolicited message is
   recieved.  First all listeners are tried in the order declared
   with the capture flag set.  Then all listeners are tried in
   the reverse order declared with the capture flag clear.

 @param aMessage Actual message.

 @param aCapture True if the listener is being permitted to gain
   control before all later-added listeners.

 @return true if message is handled, false if it was not
boolean handleMessage(in nsISOAPMessage aMessage, in boolean aCapture)