How do I fix a 101 Switching Protocols?

No action is usually required — this is an interim response Ensure your HTTP client understands 1xx interim responses For 100-continue, send the body once the interim response arrives

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101

Switching Protocols

Informational

The requester has asked the server to switch protocols and the server has agreed.

Category: 1xx Informational Standard: RFC 9110 First Appeared: HTTP/1.1

What is 101 Switching Protocols?

HTTP 101 Switching Protocols is a 1xx status code. The requester has asked the server to switch protocols and the server has agreed.

Client Request

Server

Processing

Common Causes

The client sent an Expect header or an upgrade request

An intermediate step in a longer request/response exchange

A protocol negotiation is in progress

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