TCP Encapsulation Considerations

Document Type Expired Internet-Draft (individual)
Authors Tommy Pauly  , Eric Kinnear 
Last updated 2019-01-03 (latest revision 2018-07-02)
Replaces draft-pauly-tcp-encapsulation
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


Network protocols other than TCP, such as UDP, are often blocked or suboptimally handled by network middleboxes. One strategy that applications can use to continue to send non-TCP traffic on such networks is to encapsulate datagrams or messages within in a TCP stream. However, encapsulating datagrams within TCP streams can lead to performance degradation. This document provides guidelines for how to use TCP for encapsulation, a summary of performance concerns, and some suggested mitigations for these concerns.


Tommy Pauly (
Eric Kinnear (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)