MIKEYMessage.from_caps
Description:
[ CCode ( has_construct_function = false ) ]
[ Version ( since = "1.8" ) ]
public MIKEYMessage.from_caps (Caps caps)
  [ Version ( since = "1.8" ) ]
public MIKEYMessage.from_caps (Caps caps)
Makes mikey message including: - Security Policy Payload - Key Data Transport Payload - Key Data Sub-Payload
Parameters:
| caps | a Caps, including SRTP parameters (srtp/srtcp cipher, authorization, key data) | 
Returns:
| a MIKEYMessage, or null if there is no srtp information in the caps. |