MSRPRELAY

MSRP Relay is a relay to help NAT traversal of MSRP based Instant Messaging and File Transfer sessions between SIP end-points located behind NAT. This extension is defined in RFC 4976 This software is licensed according to the GPL version 2... A series of related instant messages between two or more parties can be viewed as part of a "message session", that is, a conversational exchange of messages with a definite beginning and end. This is in contrast to individual messages each sent independently. Messaging schemes that track only individual messages can be described as "page-mode" messaging, whereas messaging that is part of a "session" with a definite start and end is called "session-mode" messaging.