Wiki » History » Version 1
Tijmen de Mes, 05/01/2012 03:18 PM
| 1 | 1 | Tijmen de Mes | A series of related instant messages between two or more parties can be |
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| 2 | viewed as part of a "message session", that is, a conversational exchange of |
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| 3 | messages with a definite beginning and end. This is in contrast to |
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| 4 | individual messages each sent independently. Messaging schemes that track |
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| 5 | only individual messages can be described as "page-mode" messaging, whereas |
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| 6 | messaging that is part of a "session" with a definite start and end is |
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| 7 | called "session-mode" messaging. |
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| 8 | |||
| 9 | Page-mode messaging is enabled in SIP via the SIP MESSAGE method, as defined |
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| 10 | in RFC 3428. Session-mode messaging has a number of benefits over page-mode |
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| 11 | messaging, however, such as explicit rendezvous, tighter integration with |
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| 12 | other media-types, direct client-to-client operation, and brokered privacy |
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| 13 | and security. |
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| 14 | |||
| 15 | Message Session Relay Protocol (MSRP) is a protocol for transmitting a |
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| 16 | series of related instant messages in the context of a session. Message |
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| 17 | sessions are treated like any other media stream when set up via a |
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| 18 | rendezvous or session creation protocol such as the Session Initiation |
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| 19 | Protocol (SIP). |
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| 20 | |||
| 21 | MSRP sessions are defined in RFC 4975. The relay extension that can be used |
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| 22 | for NAT traversal purposes is defined in RFC 4976. |