The OnTimeout event handler is invoked when a client has not
sent any data to the server within the timeout period specified when
the server was started. To implement an event handler, the application should
create a class derived from the CInternetServer class, and then
override this method.
This event handler is typically used to monitor the amount of time
that a client is idle. The default timeout period for the server is 20
seconds, which would cause this event handler to be invoked whenever a
client has not sent any data to the server in the last 20 seconds. The
server may take no action, or it may disconnect the client after it
has been idle for an extended period of time. To get the total amount
of time that the client has been idle, call the GetClientIdleTime
method. Note that while the server timeout period is specified in
seconds, the GetClientIdleTime method returns the client idle
time in milliseconds.
The default implementation for this event handler is to take no
action. It is recommended that most server applications disconnect
clients that are inactive. For typical client-server implementations
that use transitory connections (where the client sends a single
request to the server, the server responds and the connection is
terminated) the amount of time that a client should be permitted to
remain idle should be relatively low, usually 60 seconds or less. For
persistent connections where there are multiple requests issued by the
client over the lifetime of the session, a longer idle timeout period
may be preferable.