URLs

In all Internet protocols, including HTTP, a client must locate Internet resources by using a Uniform Resource Locator. The URL for an HTTP address can be broken into three parts.

• How (scheme). Defines how the request is made. When the HTTP scheme is used, network resources are located by means of the Hypertext Transport Protocol.
• Where. Defines the host.
• What. Specifies the complete path to the object and the object's name that is being requested by the client.

For example, this is the syntax for a URL that uses the HTTP scheme:

http: //host[:port]abs_path

where

host

A legal Internet host domain name or IP address (in dotted-decimal form), as defined by Section 2.1 of RFC 1123.

:port

Port 80 is used if no port is specified. However, by using this optional parameter, you can specify any port.

abs_path

The full path and filename.

The type of scheme used depends upon the object being requested. The following schemes are currently supported by Internet Explorer.

For more information about these and other schemes, see the Internet address http://www.w3.org/pub/WWW/Addressing/schemes.html.