March 2003
Intermediate to advanced
312 pages
7h 12m
English
Content preview from HTTP Developer’s Handbook
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Line Termination
An HTTP message, as discussed earlier, begins with several lines that are terminated by CRLF (carriage return plus a line feed, which is \r\n in many programming languages). The dominance of Unix-based operating systems on the Internet has made the single line feed character (\n) quite common as a termination character as well, although those who strictly adhere to the standard use the proper two-character termination sequence.
The content, if it exists, is always separated from the rest of the HTTP message by an empty line with nothing but the termination character(s). For example, consider this HTTP response:
HTTP/1.1 200 OK Date: Tue, 21 May 2002 12:34:56 GMT Content-Length: 20 Content-Type: text/html Connection: close <html> ...
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