The following proposal provides a new FIX session layer for high performance. FIX Performance Session Layer (FIXP) is a “lightweight point-to-point protocol” introduced to provide an open industry standard for high performance computing requirements currently encountered by the FIX Community. FIXP is a derived work. The origin and basis for FIXP are the FIX session layer protocols and the designed and implemented by NASDAQOMX, SoupTCP, SoupBinTCP, and UFO (UDP for Orders). Every attempt was made to keep FIXP as close to the functionality and behavior of SoupBinTCP and UFO as possible. Extensions and refactoring were performed as incremental improvements. Every attempt was made to limit the FIXP to establishing and maintaining a communication session between two end points in a reliable manner, regardless of the reliability of the underlying transport.

Issues for corrections and proposed enhancements may be entered for future versions within the FIXP GitHub project:
https://github.com/FIXTradingCommunity/fixp-specification

The proposed technical standard for FIXP is following the technical standards review process described in the document found here.

Version 1.1 Draft Standard

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FIXP Session Layer Technical Proposal Version 1.1 - Draft Standard 401.43 KB 607 downloads May 8, 2019

FIXP V1.1 Draft Standard ...
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FIXP Session Layer Technical Standard Version 1.1 - Draft Standard 1.53 MB 449 downloads May 8, 2019

FIXP V1.1 Draft Standard - Technical Standard ...

    Version 1.1 Release Candidate 1

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    FIXP Session Layer Technical Proposal Version 1.1 - Release Candidate 1 292.25 KB 63 downloads January 9, 2019

    Technical proposal submission for Version 1.1 Release Candidate 1 of FIXP Session Layer Specification. ...
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    FIXP Session Layer Technical Standard Version 1.1 - Release Candidate 1 1.43 MB 74 downloads January 9, 2019

    Technical Specification document for FIXP Session Layer Version 1.1 Release Candidate 1 ...

      Version 1.0 Technical Standard

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      FIXP Session Layer Technical Proposal Version 1.0 - Technical Proposal 80.78 KB 1 downloads May 3, 2021

      Technical proposal submission for Version 1.0 of FIXP Session Layer Specification. ...
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      FIXP Session Layer Technical Specification V1.0 - Technical Standard 1.33 MB 2 downloads May 3, 2021

      Technical specification for Version 1.0 of FIXP Session Layer. ...

        Version 1.0 Draft Standard

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        FIXP Session Layer Specification - Draft Standard 1.14 MB 348 downloads August 17, 2018

        Technical Specification document for FIX Performance Session Layer (FIXP). ...

          Version 1.0 Release Candidate 4

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          FIXP Session Layer Release Candidate 4 - Technical Proposal 511.03 KB 115 downloads May 3, 2018

          Technical standard submission for Release Candidate 4 of FIXP Session Layer Specification. ...
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          FIXP Session Layer Specification - Release Candidate 4 522.39 KB 115 downloads May 3, 2018

          Release Candidate 4 of FIX Performance Session Layer Specification. ...

            Version 1.0 Release Candidate 3

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            FIXP Session Layer Specification- Release Candidate 3 1.61 MB 63 downloads July 28, 2016

            Release Candidate 3 of FIX Performance Session Layer Specification. ...
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            FIXP Session Layer Release Candidate 3 - Technical Proposal 536.26 KB 75 downloads July 28, 2016

            Technical Standard proposal submission for Release Candidate 3 of FIXP Session Layer Specification. ...

              Version 1.0 Release Candidate 2

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              FIXP Session Layer Release Candidate 2 - Technical Proposal 414.67 KB 13 downloads March 17, 2017

              Technical Standard proposal submission for Release Candidate 2 of FIXP Session Layer Specification. ...
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              FIXP Session Layer Specification - Release Candidate 2 1.11 MB 13 downloads March 17, 2017

              Release Candidate 2 of FIX Performance Session Layer Specification. ...

                Version 1.0 Release Candidate 1

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                FIXP Session Layer Specification - Release Candidate 1 1.00 MB 18 downloads March 17, 2017

                Release Candidate 1 of FIX Performance Session Layer Specification. ...