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HTTP 1xx Informational Status Codes/HTTP 103 Early Hints

Preliminary headers before the final response

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Section: HTTP 1xx Informational Status Codes

HTTP 103 Early Hints

text
text
HTTP/1.1 103 Early Hints
Link: </app.css>; rel=preload; as=style
Explanation

Can be used to send hints, such as preload links, before the final response arrives.

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Client may continue request body
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HTTP 101 Switching Protocols
Server is switching protocols
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HTTP 102 Processing
Server has received and is processing
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