If you write web applications, then eventually you're going to want to allocate a buffer to hold a URL input by a user. Since you won't know how long that URL will be, you'll have to decided what the maximum length you're going to allow. Surprisingly, the HTTP/1.1 protocol doesn't mention a maximum length. In practice, Internet Explorer and the other browsers have set the maximum, and, while these vary a bit from browser to browser, 2083 bytes is considered the safest maximum URL length.
Of the 2083 bytes, no mor (2b),