What does it mean?
Especially in case of Content-Type: application/x-www-form-urlencoded.
Content-Type: application/x-www-form-urlencoded
It's the number of bytes of data in the body of the request or response. The body is the part that comes after the blank line below the headers.
1.4m articles
1.4m replys
5 comments
56.9k users