Please Whitelist This Site?

I know everyone hates ads. But please understand that I am providing premium content for free that takes hundreds of hours of time to research and write. I don't want to go to a pay-only model like some sites, but when more and more people block ads, I end up working for free. And I have a family to support, just like you. :)

If you like The TCP/IP Guide, please consider the download version. It's priced very economically and you can read all of it in a convenient format without ads.

If you want to use this site for free, I'd be grateful if you could add the site to the whitelist for Adblock. To do so, just open the Adblock menu and select "Disable on tcpipguide.com". Or go to the Tools menu and select "Adblock Plus Preferences...". Then click "Add Filter..." at the bottom, and add this string: "@@||tcpipguide.com^$document". Then just click OK.

Thanks for your understanding!

Sincerely, Charles Kozierok
Author and Publisher, The TCP/IP Guide


NOTE: Using software to mass-download the site degrades the server and is prohibited.
If you want to read The TCP/IP Guide offline, please consider licensing it. Thank you.

The Book is Here... and Now On Sale!

Get The TCP/IP Guide for your own computer.
The TCP/IP Guide

Custom Search







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
Previous Page
Pages in Current Topic/Section
12
3
45
Next Page
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

If you find The TCP/IP Guide useful, please consider making a small Paypal donation to help the site, using one of the buttons below. You can also donate a custom amount using the far right button (not less than $1 please, or PayPal gets most/all of your money!) In lieu of a larger donation, you may wish to consider purchasing a download license of The TCP/IP Guide. Thanks for your support!
Donate $2
Donate $5
Donate $10
Donate $20
Donate $30
Donate: $



Home - Table Of Contents - Contact Us

The TCP/IP Guide (http://www.TCPIPGuide.com)
Version 3.0 - Version Date: September 20, 2005

© Copyright 2001-2005 Charles M. Kozierok. All Rights Reserved.
Not responsible for any loss resulting from the use of this site.