URL Schemes and Scheme-Specific Syntaxes

As explained in the previous sections, URLs use a general syntax that describes the location and method for accessing a TCP/IP resource:

<scheme>://<user>:<password>@<host>:<port>/<urlpath>;<params>?<query>#<fragment>

Each access method, called a scheme, has its own specific URL syntax, including the various pieces of information required by the method to identify a resource. RFC 1738 includes a description of the specific syntaxes used by several popular URL schemes. Others have been defined in subsequent RFCs using the procedure established for URL scheme registration.

Several of the URL schemes use the common Internet pattern shown in Figure 70-1 earlier in the chapter. Other schemes use entirely different ...

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