2011-10-21 2026-01-12 First Come First Served permessage-deflate WebSocket Per-Message Deflate None bbf-usp-protocol BBF USP Protocol None First Come First Served Please see Section 2 of , which clarifies that registrations which differ from existing registrations only by case will be refused. This table also includes subprotocol identifiers specified for usage within a WebRTC data channel. MBWS.huawei.com MBWS (page 9) MBLWS.huawei.com MBLWS (page 9) soap soap wamp WAMP ("The WebSocket Application Messaging Protocol") v10.stomp Name: STOMP 1.0 specification v11.stomp Name: STOMP 1.1 specification v12.stomp Name: STOMP 1.2 specification ocpp1.2 OCPP 1.2 ocpp1.5 OCPP 1.5 ocpp1.6 OCPP 1.6 ocpp2.0 OCPP 2.0 ocpp2.0.1 OCPP 2.0.1 ocpp2.1 OCPP 2.1 rfb RFB sip WebSocket Transport for SIP (Session Intiation Protocol) notificationchannel-netapi-rest.openmobilealliance.org OMA RESTful Network API for Notification Channel OMA RESTful Network API for Notification Channel V 1.0, Open Mobile Alliance, OMA-TS-REST_NetAPI_NotificationChannel-V1_0 wpcp Web Process Control Protocol (WPCP) amqp Advanced Message Queuing Protocol (AMQP) 1.0+ mqtt mqtt MQTT Version 5.0 jsflow jsFlow pubsub/queue protocol rwpcp Reverse Web Process Control Protocol (RWPCP) xmpp WebSocket Transport for the Extensible Messaging and Presence Protocol (XMPP) ship SHIP - Smart Home IP SHIP (Smart Home IP) is a an IP based approach to plug and play home automation and smart energy / energy efficiency, which can easily be extended to additional domains such as Ambient Assisted Living (AAL). SHIP can be used solely on the customer premises or can be integrated into a cloud based solution. EEBus Initiative mielecloudconnect Miele Cloud Connect Protocol This protocol is used to securely connect household or professional appliances to an internet service portal via a public communication network in order to enable remote services. The specification is not published yet. v10.pcp.sap.com Push Channel Protocol msrp WebSocket Transport for MSRP (Message Session Relay Protocol) v1.saltyrtc.org SaltyRTC 1.0 TLCP-2.0.0.lightstreamer.com TLCP (Text Lightstreamer Client Protocol) bfcp WebSocket Transport for BFCP (Binary Floor Control Protocol) sldp.softvelum.com Softvelum Low Delay Protocol SLDP is a low latency live streaming protocol for delivering media from servers to MSE-based browsers and WebSocket-enabled applications. opcua+uacp OPC UA Connection Protocol opcua+uajson OPC UA JSON Encoding v1.swindon-lattice+json Swindon Web Server Protocol (JSON encoding) v1.usp USP (Broadband Forum User Services Platform) mles-websocket mles-websocket coap Constrained Application Protocol (CoAP) TLCP-2.1.0.lightstreamer.com TLCP (Text Lightstreamer Client Protocol) sqlnet.oracle.com sqlnet This protocol is used for communication between Oracle database client and database server, and its usage as subprotocol of websocket is primarly geared towards cloud deployments. sqlnet supports bi-directional data transfer and is full duplex in nature. oneM2M.R2.0.json oneM2M R2.0 JSON oneM2M.R2.0.xml oneM2M R2.0 XML oneM2M.R2.0.cbor oneM2M R2.0 CBOR transit Transit 2016.serverpush.dash.mpeg.org MPEG-DASH-ServerPush-23009-6-2017 2018.mmt.mpeg.org MPEG-MMT-23008-1-2018 clue clue webrtc.softvelum.com Softvelum WebSocket signaling protocol WebRTC live streaming requires WebSocket-based signaling protocol for every specific implementation. Softvelum products will use this subprotocol for signaling. cobra.v2.json Cobra Real Time Messaging Protocol drp Declarative Resource Protocol hub.bsc.bacnet.org BACnet Secure Connect Hub Connection Addendum BJ to ANSI/ASHRAE Standard 135-2016 dc.bsc.bacnet.org BACnet Secure Connect Direct Connection Addendum BJ to ANSI/ASHRAE Standard 135-2016 jmap WebSocket Transport for JMAP (JSON Meta Application Protocol) t140 ITU-T T.140 Real-Time Text done done.best IoT Protocol "done" is a general purpose IoT Protocol, used by done.best based solutions TLCP-2.2.0.lightstreamer.com TLCP (Text Lightstreamer Client Protocol) collection-update The Collection Update Websocket Subprotocol TLCP-2.3.0.lightstreamer.com TLCP (Text Lightstreamer Client Protocol) text.ircv3.net Text IRC Protocol binary.ircv3.net Binary IRC Protocol v3.penguin-stats.live+proto Penguin statistics Live Protocol v3 (Protobuf encoding) TLCP-2.4.0.lightstreamer.com TLCP (Text Lightstreamer Client Protocol) TLCP-2.5.0.lightstreamer.com TLCP (Text Lightstreamer Client Protocol) Redfish Redfish Specification DSP0266 bidib webBiDiB json.webpubsub.azure.v1 Azure Web PubSub subprotocol JSON protobuf.webpubsub.azure.v1 Azure Web PubSub subprotocol protobuf json.reliable.webpubsub.azure.v1 Azure Web PubSub subprotocol reliable JSON protobuf.reliable.webpubsub.azure.v1 Azure Web PubSub subprotocol reliable protobuf WebREPL.binary.v1 WebREPL Binary Protocol HYBI WG Chairs Standard Version Numbers IETF Review Interim Version Numbers Expert Review 0 Interim 1 Interim 2 Interim 3 Interim 4 Interim 5 Interim 6 Interim 7 Interim 8 Interim 9 Reserved 10 Reserved 11 Reserved 12 Reserved 13 Standard Alexey Melnikov 1000-2999 Standards Action, Specification Required or IESG Review 3000-3999 First Come First Served 1000 Normal Closure 1001 Going Away 1002 Protocol error 1003 Unsupported Data 1004 Reserved 1005 No Status Rcvd 1006 Abnormal Closure 1007 Invalid frame payload data 1008 Policy Violation 1009 Message Too Big 1010 Mandatory Ext. 1011 Internal Error 1012 Service Restart 1013 Try Again Later 1014 The server was acting as a gateway or proxy and received an invalid response from the upstream server. This is similar to 502 HTTP Status Code. 1015 TLS handshake 1016-2999 Unassigned 3000 Unauthorized 3001-3002 Unassigned 3003 Forbidden 3004-3007 Unassigned 3008 Timeout 3009-3999 Unassigned 4000-4999 Reserved for Private Use Standards Action 0 Continuation Frame 1 Text Frame 2 Binary Frame 3-7 Unassigned 8 Connection Close Frame 9 Ping Frame 10 Pong Frame 11-15 Unassigned Standards Action RSV1 The "Per-Message Compressed" bit, which indicates whether or not the message is compressed. RSV1 is set for compressed messages and unset for uncompressed messages. Ada Young mailto:nova.io&pm.me 2023-02-22 Alessandro Alinone mailto:alessandro.alinone&lightstreamer.com 2017-02-03 Alexey Melnikov mailto:alexey.melnikov&isode.com 2016-10-10 Alviss Reimu mailto:alvissreimu&gmail.com 2021-12-17 Andreas Westermann mailto:westermann&eebus.org 2014-11-06 ASHRAE Inc. mailto:standards.section&ashrae.org 2019-12-20 Benjamin Sergeant mailto:bsergean&gmail.com 2019-11-13 Bernhard Isler mailto:bernhard.isler&siemens.com 2019-12-19 BiDiB & Tools e.V. mailto:info&bidib.org 2024-05-17 Broadband Forum mailto:help&broadband-forum.org 2019-12-13 Chet Ensign mailto:chet.ensign&oasis-open.org 2019-03-26 Daniel Oakley mailto:daniel&danieloaks.net 2021-10-05 Dario Crivelli mailto:dario.crivelli&lightstreamer.com 2022-09-23 done.best mailto:helly.hartl&gmail.com 2020-04-27 DMTF Administration mailto:admin&dmtf.org 2023-08-14 Feroz Alam Khan mailto:feroz.khan&oracle.com 2018-08-02 Galvin Gao mailto:iana-contact&imgal.vin 2021-12-17 Helmut Hartl mailto:helly.hartl&gmail.com 2020-04-27 IESG HYBI WG mailto:hybi&ietf.org 2011-12 Imed_Bouazizi mailto:i.bouazizi&samsung.com 2019-04-10 IRCv3 Working Group https://ircv3.net/ 2021-10-05 Jeff Mesnil mailto:jmesnil&gmail.com 2022-08-10 Jon Lachlan mailto:jonlachlan&protonmail.com 2020-08-11 Jonathan E. Peace mailto:jep&alphabetiq.com 2025-12-13 Juhamatti Kuusisaari mailto:juhamatti.kuusisaari&mles.io 2017-11-02 Kevin Guo mailto:kevinguo&microsoft.com 2025-07-17 Lennart Grahl mailto:lennart.grahl&gmail.com 2016-09-06 Leo Tietz mailto:leo.tietz&gmail.com 2021-09-06 Lightstreamer Srl mailto:support&lightstreamer.com 2022-09-23 Magnus Lundstedt mailto:magnus&precisit.com 2014-09-30 Mark Hapner mailto:mhapner&huawei.com 2012-04-12 Masoud Aghadavoodi Jolfaei mailto:masoud.aghadavoodi.jolfaei&sap.com 2015-07-30 Miguel Angel Reina Ortega mailto:miguelangel.reinaortega&etsi.org 2018-09-20 Morgan Jones mailto:morgan.jones&viasat.com 2024-02-01 Nils Langhammer mailto:nils.langhammer&miele.de 2015-02-01 OMNA - Open Mobile Naming Authority mailto:OMA-OMNA&mail.openmobilealliance.org 2014-01-07 OPC Foundation mailto:tcb&opcfoundation.org 2017-05-19 Open Charge Alliance mailto:info&openchargealliance.org 2019-01-23 Patrick Gansterer mailto:paroga&paroga.com 2014-10-16 Paul Batum mailto:pbatum&microsoft.com 2011-10-28 Paul Colomiets mailto:paul&colomiets.name 2017-07-05 Pete Brown mailto:jpbrown&adhdtech.com 2019-12-03 Randy Buchholz mailto:me&randybuchholz.com 2018-11-29 Robin Cover mailto:robin&oasis-open.org 2016-05-31 Tobias Oberstein mailto:tobias.oberstein&gmail.com 2026-01-12 Tristan Richardson mailto:standards&realvnc.com 2013-07-29 Uwe Rauschenbach mailto:uwe.rauschenbach&nokia.com 2015-03-05 WAMP https://wamp-proto.org 2026-01-12 Yuri Udovichenko mailto:connect&softvelum.com 2019-05-09