Message Stream

Fast Pair supports an RFCOMM channel for Providers that wish to maintain a persistent connection to a device during operation. When the Provider connects to a supported Seeker, the Seeker will attempt to connect RFCOMM on the following channel:


Once connected, messages can be exchanged in the following format:

Octet Data Type Description Mandatory?
0 uint8 Message group Mandatory
1 uint8 Message code Mandatory
2 - 3 uint16 Additional data length Mandatory
4 - n Additional data Optional

The additional data length and additional data fields should be big endian.