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Table Of Contents  The TCP/IP Guide
 9  TCP/IP Application Layer Protocols, Services and Applications (OSI Layers 5, 6 and 7)
      9  TCP/IP Key Applications and Application Protocols
           9  TCP/IP Application Layer Addressing: Uniform Resource Identifiers, Locators and Names (URIs, URLs and URNs)
                9  Uniform Resource Locators (URLs)

Previous Topic/Section
URL General Syntax
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12
3
45
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URL Relative Syntax and Base URLs
Next Topic/Section

URL Schemes (Applications / Access Methods) and Scheme-Specific Syntaxes
(Page 3 of 5)

URL Syntax for Sending Electronic Mail (mailto)

A special syntax is defined to allow a URL to represent the command to send mail to a user:

mailto:<e-mail-address>

The e-mail address is in standard Internet form: “<username>@<domainname>”. This is really an unusual type of URL because it does not really represent an object at all, though a person can be considered a type of “resource”.

Note: Note that optional parameters, such as the subject of the e-mail, can also be included in a mailto URL. This facility is not often used, however.


Gopher Protocol URL Syntax (gopher)

The syntax for the Gopher Protocol is similar to that of HTTP and FTP:

gopher://<host>:<port>/<gopher-path>

See the topic on the Gopher protocol for more information on Gopher paths and how the protocol operates.


Previous Topic/Section
URL General Syntax
Previous Page
Pages in Current Topic/Section
12
3
45
Next Page
URL Relative Syntax and Base URLs
Next Topic/Section

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Version 3.0 - Version Date: September 20, 2005

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