2.2.2.2 S20_CREATE

The S20_CREATE packet is sent by a host to create a new application-sharing session.


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length

Version/Type

user

Correlator

...

lenName

lenCaps

nameData (variable)

...

capsData (204 bytes)

...

...

length (2 bytes): The length, in bytes, of the packet including the 2 bytes required for this length value.

Version/Type (2 bytes): MUST be set to 0x0031.

user (2 bytes): The local identifier of the user, which is obtained from the Multipoint Communication Service (MCS) [T122] layer. For more information about the MCS user ID, see [T122] section 3 (Definitions) in the ITU-T Recommendation.

Correlator (4 bytes): The unique identifier for the new session. The first two bytes are the MCS user identifier (described previously) followed by a monotonically increasing 2-byte sequence number that starts at zero.

lenName (2 bytes): The length, in bytes, of nameData.

lenCaps (2 bytes): The length, in bytes, of capsData.

nameData (variable): A null-terminated array of 8-bit, unsigned ASCII characters, up to 65,535 characters in length. The name of the user.

capsData (204 bytes): A CPCALLCAPS structure that describes the capabilities of the sender.