2.2.1.3.4.1 Channel Definition Structure (CHANNEL_DEF)

The CHANNEL_DEF packet contains information for a particular static virtual channel.

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name
...
options

name (8 bytes): An 8-byte array containing a null-terminated collection of seven ANSI characters that uniquely identify the channel.

options (4 bytes): A 32-bit, unsigned integer. Channel option flags.

Flag	Meaning
CHANNEL_OPTION_INITIALIZED 0x80000000	This flag is unused and its value MUST be ignored by the server.
CHANNEL_OPTION_ENCRYPT_RDP 0x40000000	This flag is unused and its value MUST be ignored by the server.
CHANNEL_OPTION_ENCRYPT_SC 0x20000000	This flag is unused and its value MUST be ignored by the server.
CHANNEL_OPTION_ENCRYPT_CS 0x10000000	This flag is unused and its value MUST be ignored by the server.
CHANNEL_OPTION_PRI_HIGH 0x08000000	Channel data MUST be sent with high MCS priority.
CHANNEL_OPTION_PRI_MED 0x04000000	Channel data MUST be sent with medium MCS priority.
CHANNEL_OPTION_PRI_LOW 0x02000000	Channel data MUST be sent with low MCS priority.
CHANNEL_OPTION_COMPRESS_RDP 0x00800000	Virtual channel data MUST be compressed if RDP data is being compressed.
CHANNEL_OPTION_COMPRESS 0x00400000	Virtual channel data MUST be compressed, regardless of RDP compression settings.
CHANNEL_OPTION_SHOW_PROTOCOL 0x00200000	The value of this flag MUST be ignored by the server. The visibility of the Channel PDU Header (section 2.2.6.1.1) is determined by the CHANNEL_FLAG_SHOW_PROTOCOL (0x00000010) flag as defined in the flags field (section 2.2.6.1.1).
REMOTE_CONTROL_PERSISTENT 0x00100000	Channel MUST be persistent across remote control transactions.