2.2.8.1 Capability Attribute
The Capability attribute indicates whether a connection over Miracast over Infrastructure is possible. This attribute MUST be present in the Vendor Extension attribute.
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AttributeID |
Length |
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CapabilityInfo |
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AttributeID (2 bytes): The Capability attribute ID, which is 0x2001.
Length (2 bytes): The length of the CapabilityInfo field, in bytes, which is 0x0001.
CapabilityInfo (1 byte): A bit field table with capability information, which has the following structure:
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0
1
2
3
4
5
6
7
8
91
0
1
2
3
4
5
6
7
8
92
0
1
2
3
4
5
6
7
8
93
0
1X
D
C
B
A
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A - MiracastOverInfrastructureSupport (1 bit): 0 = not supported, 1 = supported.
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B - StreamEncryptionSupported (1 bit): 0 = not supported, 1 = supported.
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C - Version (3 bits): The version of this protocol, which is 0x1.
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D - PinSupported (1 bit): 0 = not supported, 1 = supported. Bit B MUST be set to 1 in order to set this to 1, otherwise it is implicitly set to 0.
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X - Reserved (2 bits): These bits MUST be set to zero and MUST be ignored on receipt.