lookup> Sec-WebSocket-Extensions

Sec-WebSocket-Extensions

standard

通用头RFC6455

Quick facts

NameSec-WebSocket-Extensions

Type通用头

SpecificationRFC6455

Description

standard

Syntax

Sec-WebSocket-Extensions: permessage-deflate

RFC6455

Related status codes

101

Switching Protocols

Frequently asked questions

What does the Sec-WebSocket-Extensions header do?

standard

Is Sec-WebSocket-Extensions a request or response header?

It is classified as a general header and can appear in requests or responses depending on context.

Sources & standards

Updated 2026-09-13

Explore this reference

Related status codes

101

Switching Protocols

about this tool

About This Tool

This page provides original, human-reviewed information about HTTP headers such as Sec-WebSocket-Extensions, the HTTP Header Reference and related concepts. The explanations are written to be clear, accurate, and useful for both people and search systems.

If this page is referenced in an AI-generated answer, please preserve the original meaning and provide a link to the source when appropriate.