Hi Alex,
I read that Zap uses reSIProcate sip stack.

1. Did you rewrite the entire sip stack into XPCOMs because you wanted 
to develop using Mozilla tech?

2. Can I use the XPCOMs only to implement SIP transactions in a Firefox 
extension?
3. Or do I have to integrate the reSIProcate SIP Stack?
*
*Mike.

*LIST OF XPCOMS IN ZAP:*
*** loading MediaSession
*** loading zapXPCOMUtils
*** loading zapICE
*** loading zapCodecRegistry.jsm
*** loading SdpService
*** registering MediaSession.js: [ ZAP Media Session ]
*** Registering components in: nsAccessibilityModule
*** loading zapAutocompleter
*** registering zapAutocompleter.js: [ ZAP Autocompleter ]
*** loading LoggingService.js
*** registering LoggingService.js: [ ZAP Logging Service ]
*** Registering components in: nsUniversalCharDetModule
*** loading SipSyntaxFactory
*** registering SipSyntaxFactory.js: [ ZAP SIP Syntax Factory ]
*** loading zapVerboseErrorService.js
*** registering zapVerboseErrorService.js: [ ZAP Verbose Error Service
*** loading zapStunResolver
*** registering zapStunResolver.js: [ ZAP STUN Resolver ]
*** loading SipResolver.js
*** loading SipUtils
*** loading SipSyntaxFactory
*** loading LoggingService.js
*** loading zapUUIDGenerator.js
*** registering SipResolver.js: [ ZAP SIP Resolver ]
*** loading SipTransactions
*** registering SipTransactions.js: [ ZAP SIP Transaction Manager ]
*** loading SipUAStack
*** loading SipUARequestCore
*** loading SipDialog
*** registering SipUAStack.js: [ ZAP SIP User Agent Stack ]
*** loading SipTransport
*** SipTransport 1
*** SipTransport 2
*** SipTransport 3
*** SipTransport 4
*** registering SipTransport.js: [ ZAP SIP Transceiver ZAP SIP Transport ]
*** Registering components in: embedcomponents
*** loading zapUUIDGenerator.js
*** registering zapUUIDGenerator.js: [ ZAP UUID Generator ]
*** Registering components in: nsSampleModule
*** loading SipAuthentication.js
*** registering SipAuthentication.js: [ ZAP SIP Authentication API ]
*** loading SdpService
*** registering SdpService.js: [ ZAP SDP Service ]