| Internet-Draft | SCTP Socket API Extensions | September 2026 |
| Dreibholz, et al. | Expires 20 March 2027 | [Page] |
This document describes extensions to the SCTP sockets API for configuring the CMT-SCTP and CMT/RP-SCTP extensions.¶
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This document describes extensions to the SCTP sockets API (see [2], [1]) that allow an application to configure the behavior of the Concurrent Multipath Transfer (CMT) extensions CMT-SCTP, CMT/RPv1-SCTP, CMT/RPv2-SCTP, and MPTCP-like (see [3], [10], [5], [4], [7], [6], [8], [9], [11]).¶
This socket option activates or deactivates CMT and sets the corresponding Resource Pooling variant to be applied. The sctp_assoc_value structure is used to specify the association for which the CMT state should be changed and the new CMT state.¶
Definition of the sctp_assoc_value structure:¶
struct sctp_assoc_value {
sctp_assoc_t assoc_id;
uint32_t assoc_value;
};
¶
A large-scale and realistic Internet testbed platform with support for the multi-homing feature of the underlying SCTP protocol is NorNet. A description of NorNet is provided in [13] and [12]. Further information can be found on the project website [14].¶
Security considerations for the SCTP sockets API are described in [2].¶
This document does not require IANA actions.¶
The authors would like to thank Michael Tüxen for his support.¶