IETF Binary Floor Control Protocol Bis

The IETF Binary Floor Control Protocol Bis (BFCPBIS) working group is chartered to specify a revision of BFCP (RFC 4582) to support both TCP and UDP as transports.

• The revision adds optional support for UDP to BFCP. The security when using UDP will be based on DTLS. The updated protocol will use an existing approach (e.g., stop and wait with a single outstanding transaction) to provide a reliable, congestion safe, and TCP friendly transport.
• The updated protocol will also be able to deliver server-initiated transactions reliably when needed. The WG will research the size of messages used and decide if fragmenting a request or response over multiple UDP packets is required. The new protocol will be backwards compatible with RFC 4582 when used in TCP mode.
• The BFCPBIS WG coordinates closely with the MMUSIC WG to create a revision of RFC 4583 specifying how BFCP is signaled in SDP so that it supports UDP as well as TCP transports.

Most of the WG's milestones for applications and real-time area have been achieved.