HTTP Response
External
- RFC 2616 Section 6 Response https://www.w3.org/Protocols/rfc2616/rfc2616-sec6.html
Internal
Overview
A HTTP response consists of a status line, followed by an optional set of headers, followed by blank line followed by an optional message body.
This is a simple example:
HTTP/1.1 200 OK Content-Type: text/html HttpServer: Test Server Content-Length: 1024 ... ...
The Response Status Line
The status line starts with the protocol version followed by a numeric status code and its associated reason phrase, with each element separated by space. No CR or LF is allowed except in the final CRLF sequence.
For more details about the status code, see
Example:
HTTP/1.1 200 OK
The Headers
General Headers
Response Headers
The response-header fields allow the server to pass additional information about the response which cannot be placed in the Status- Line. These header fields give information about the server and about further access to the resource identified by the Request-URI.
response-header = Accept-Ranges ; Section 14.5
| Age ; Section 14.6
| ETag ; Section 14.19
| Location ; Section 14.30
| Proxy-Authenticate ; Section 14.33
| Retry-After ; Section 14.37
| Server ; Section 14.38
| Vary ; Section 14.44
| WWW-Authenticate ; Section 14.47
Entity Headers
The Blank Line
The Message Body
More about HTTP response: http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html.
The HTTP Response Headers
- http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
- http://en.wikipedia.org/wiki/List_of_HTTP_headers