chapter 21 Building a Single-Threaded Web Server - incorrect http request definition

• I have searched open and closed issues and pull requests for duplicates, using these search terms:
  • webserver
  • web server
    -Ch21
• I have checked the latest main branch to see if this has already been fixed, in this file:
  • https://github.com/rust-lang/book/blob/main/src/ch21-01-single-threaded.md

URL to the section(s) of the book with this problem:
https://doc.rust-lang.org/book/ch21-01-single-threaded.html

Description of the problem:

The browser signals the end of an HTTP request by sending two newline characters in a row, so to get one request from the stream, we take lines until we get a line that is the empty string.

Is not correct.

\r\n\r\n

Indicates the end of the headers of the request not the full request.

https://developer.mozilla.org/en-US/docs/Web/HTTP/Guides/Messages

Suggested fix:

Use the following wording:

The browser signals the end of the optional HTTP request header by sending a carriage return and newline character twice in a row, so to get the headers of one request from the stream, we take lines until we get a line that is the empty string.

Open src/ch21-01-single-threaded.md and locate the passage describing how the browser signals the end of an HTTP request. Compare it with the cited MDN guidance and update the wording so it describes the end of the optional request headers; done means the text no longer claims that this marks the end of the full request.