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<a accesskey="3" href="page.php?w=HTTP&amp;p=17">3.Next</a>
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<p>(SSDP), two protocols usually run on a <a href="page.php?w=local_area_network">local area network</a>.</p>

<p><big>Data exchange</big></p>
<p>HTTP is a <a href="page.php?w=stateless_protocol">stateless</a> application-level protocol and it requires a reliable network transport connection to exchange data between client and server. In HTTP implementations, <a href="page.php?w=Transmission_Control_Protocol">TCP/IP</a> connections are used using <a href="page.php?w=List_of_TCP_and_UDP_port_numbers">well-known ports</a> (typically <a href="page.php?w=TCP_port">port 80</a></p><p>
<a accesskey="1" href="page.php?w=HTTP&amp;p=15">1.Previous</a><br />
<a accesskey="3" href="page.php?w=HTTP&amp;p=17">3.Next</a>
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