com.oreilly.servlet
Class DaemonHttpServlet
java.lang.Object
|
+--javax.servlet.GenericServlet
|
+--javax.servlet.http.HttpServlet
|
+--com.oreilly.servlet.DaemonHttpServlet
- All Implemented Interfaces:
- java.io.Serializable, javax.servlet.Servlet, javax.servlet.ServletConfig
- Direct Known Subclasses:
- RemoteDaemonHttpServlet
- public abstract class DaemonHttpServlet
- extends javax.servlet.http.HttpServlet
A superclass for HTTP servlets that wish to accept raw socket
connections. DaemonHttpServlet
starts listening for client requests in its init() method
and stops listening in its destroy() method. In between,
for every connection it receives, it calls the abstract
handleClient(Socket client) method. This method should
be implemented by the servlet subclassing DaemonHttpServlet.
The port on which the servlet is to listen is determined by the
getSocketPort() method.
- Version:
- 1.0, 98/09/18
- Author:
- Jason Hunter, Copyright © 1998
- See Also:
RemoteDaemonHttpServlet
, Serialized Form
Field Summary |
protected int |
DEFAULT_PORT
The default listening port (1313) |
Method Summary |
void |
destroy()
Halts the thread listening for socket connections. |
protected int |
getSocketPort()
Returns the socket port on which the servlet will listen. |
abstract void |
handleClient(java.net.Socket client)
Handles a new socket connection. |
void |
init(javax.servlet.ServletConfig config)
Begins a thread listening for socket connections. |
Methods inherited from class javax.servlet.http.HttpServlet |
doDelete, doGet, doHead, doOptions, doPost, doPut, doTrace, getLastModified, service, service |
Methods inherited from class javax.servlet.GenericServlet |
getInitParameter, getInitParameterNames, getServletConfig, getServletContext, getServletInfo, getServletName, init, log, log |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
DEFAULT_PORT
protected int DEFAULT_PORT
- The default listening port (1313)
DaemonHttpServlet
public DaemonHttpServlet()
init
public void init(javax.servlet.ServletConfig config)
throws javax.servlet.ServletException
- Begins a thread listening for socket connections. Subclasses
that override this method must be sure to first call
super.init(config).
- Overrides:
init
in class javax.servlet.GenericServlet
- Parameters:
config
- the servlet config- Throws:
javax.servlet.ServletException
- if a servlet exception occurs
getSocketPort
protected int getSocketPort()
- Returns the socket port on which the servlet will listen.
A servlet can change the port in three ways: by using the
socketPort init parameter, by setting the DEFAULT_PORT
variable before calling super.init(), or by overriding this
method's implementation.
- Returns:
- the port number on which to listen
handleClient
public abstract void handleClient(java.net.Socket client)
- Handles a new socket connection. Subclasses must define this method.
- Parameters:
client
- the client socket
destroy
public void destroy()
- Halts the thread listening for socket connections. Subclasses
that override this method must be sure to first call
super.destroy().
- Overrides:
destroy
in class javax.servlet.GenericServlet