Multipath TCP (MPTCP) Application Interface Considerations, March 2013
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Multipath TCP (MPTCP) adds the capability of using multiple paths to a regular TCP session. Even though it is designed to be totally backward compatible to applications, the data transport differs compared to regular TCP, and there are several additional degrees of freedom that applications may wish to exploit. This document summarizes the impact that MPTCP may have on applications, such as changes in performance. Furthermore, it discusses compatibility issues of MPTCP in combination with non-MPTCP-aware applications. Finally, the document describes a basic application interface that is a simple extension of TCP's interface for MPTCP-aware applications.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 8729.