High Quality Content by WIKIPEDIA articles! The Sockets Direct Protocol (SDP) is a networking protocol originally defined by the Software Working Group (SWG) of the InfiniBand Trade Association. Originally designed for InfiniBand, SDP now has been redefined as a transport agnostic protocol for Remote Direct Memory Access (RDMA) network fabrics. SDP defines a standard wire protocol over an RDMA fabric to support stream sockets (SOCK_STREAM) network. SDP uses various RDMA network features for high-performance zero-copy data transfers. SDP is a pure wire-protocol level specification and does not go into any socket API or implementation specifics. The purpose of the Sockets Direct Protocol is to provide an RDMA accelerated alternative to the TCP protocol on IP. The goal is to do this in a manner which is transparent to the application.

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