quest at a time and
accept a new transport connection for each request.  More
complex applications
will process concurrent requests, over one or multiple transport
connections, and will keep transport connections open for long
periods of time.<p>

A simple application gets a significant performance boost by
closing the transport connection when it has finished writing its
response.  The Web server needs to control the connection lifetime
for long-lived connections.<p>

When an application closes a connectio