2.2.5.1 Open Command Fields
Open command fields are defined as shown in the following table.
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1 |
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2 |
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3 |
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CommandId |
CommandLength |
SessionId |
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A |
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IdentityURL (variable) |
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DeviceURL (variable) |
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B |
C |
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E |
F |
G |
H |
I |
Reserved |
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CommandId (1 byte): The command identifier. This field MUST be set to 0x05.
CommandLength (2 bytes): The total length of the command, in bytes.
SessionId (4 bytes): The identifier for the SSTP session, as specified in section 3.1.1.3.
A - ResourceURL (variable): A variable length ASCII string terminated by 0x00 containing the URL of the resource handler for all messages on this SSTP session. This field MUST NOT be an empty string.<3>
IdentityURL (variable): A variable length ASCII string terminated by 0x00 containing the identity URL of the destination for all messages on this SSTP session. For any session other than a WAN DPP session, this field MUST NOT be an empty string.<4>
DeviceURL (variable): A variable length ASCII string terminated by 0x00 containing the device URL of the destination for all messages on this SSTP session. For identity-targeted sessions, this field MUST be an empty string.
B - r1 (1 bit): This field is reserved and MUST be set to zero.
C - r2 (1 bit): This field is reserved and MUST be set to zero.
D - r3 (1 bit): This field is reserved and MUST be set to zero.
E - r4 (1 bit): This field is reserved and MUST be set to zero.
F - r5 (1 bit): This field is reserved and MUST be set to zero.
G - r6 (1 bit): This field is reserved and MUST be set to zero.
H - r7 (1 bit): This field is reserved and MUST be set to zero.
I - I (1 bit): The field is unused, and SHOULD be zero<5>. A receiver MUST ignore this bit.
Reserved (2 bytes): The field is reserved and MUST be 0x0000.