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11. IANA Considerations

This specification requests IANA to register various WebSocket-related values.

WebSocket URI Schemes​

Registered URI schemes:

  • ws: WebSocket connection
  • wss: WebSocket Secure connection (TLS)

WebSocket Version Number​

Current version: 13

WebSocket Opcode Registry​

OpcodeMeaningReference
0x0Continuation FrameRFC 6455
0x1Text FrameRFC 6455
0x2Binary FrameRFC 6455
0x8Connection Close FrameRFC 6455
0x9Ping FrameRFC 6455
0xAPong FrameRFC 6455

WebSocket Close Code Number Registry​

See Chapter 7 for details.

WebSocket Extension Name Registry​

Registered extensions:

  • permessage-deflate (RFC 7692)
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