The HTTP URL scheme is used to designate Internet resources accessible using HTTP (HyperText Transfer Protocol).
The HTTP protocol is specified elsewhere. This specification only describes the syntax of HTTP URLs.
An HTTP URL takes the form:
where <host> and <port> are as described in Section 3.1. If :<port> is omitted, the port defaults to 80. No user name or password is allowed. <path> is an HTTP selector, and <searchpart> is a query string. The <path> is optional, as is the <searchpart> and its preceding "?". If neither <path> nor <searchpart> is present, the "/" may also be omitted.
Within the <path> and <searchpart> components, "/", ";", "?" are reserved. The "/" character may be used within HTTP to designate a hierarchical structure.