Class SocketThread

java.lang.Object

java.lang.Thread

SocketThread

All Implemented Interfaces:

java.lang.Runnable

public class SocketThread
extends java.lang.Thread

SocketThread listens to a socket and handles one HTTP request for a file in the start directory.

Author:

tm11ajn

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

Fields

Modifier and Type	Field and Description
private java.net.Socket	connectionSocket
private java.io.File	directory
private OutputDataParser	outputDataParser

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

Constructors

Constructor and Description
SocketThread(java.net.Socket connectionSocket, java.io.File directory)

Method Summary

Methods

Modifier and Type	Method and Description
private void	closeSocket() Closes the socket and handles a possible exception by interrupting this thread.
private void	handleConnection() Handles a request through the socket connection.
private java.lang.String	readFromClient() Listens to the socket and reads one line of input data from the client, that is, receives a potential HTTP request.
void	run() Handles the connection and closes socket when done.
private void	sendErrorMessageToClient(java.io.DataOutputStream outToClient, java.lang.String message) Sends the input error message to the client over the socket by using the input data output stream after having converted it to a simple html page.
private void	sendFileToClient(java.io.DataOutputStream outToClient, java.io.File file) Sends the input file to the client over the socket by using the input data output stream.
private void	sendHeaderToClient(java.io.DataOutputStream outToClient, Header header) Sends the input file header to the client over the socket by using the input data output stream.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, clone, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

connectionSocket

private java.net.Socket connectionSocket

directory

private java.io.File directory

outputDataParser

private OutputDataParser outputDataParser

Constructor Detail

SocketThread

public SocketThread(java.net.Socket connectionSocket,
            java.io.File directory)

Method Detail

readFromClient

private java.lang.String readFromClient()
                                 throws java.io.IOException

Listens to the socket and reads one line of input data from the client, that is, receives a potential HTTP request.

Returns:

String - The input data from the client over the socket.

Throws:

java.io.IOException - - If an error occurs reading data or if the data read was null.

sendHeaderToClient

private void sendHeaderToClient(java.io.DataOutputStream outToClient,
                      Header header)
                         throws java.io.IOException

Sends the input file header to the client over the socket by using the input data output stream.

Parameters:

outToClient: - DataOutputStream - The stream connected to the socket.

header: - Header - The header to be sent.

Throws:

java.io.IOException - - If an error occurs trying to send the header.

sendFileToClient

private void sendFileToClient(java.io.DataOutputStream outToClient,
                    java.io.File file)
                       throws java.io.IOException

Sends the input file to the client over the socket by using the input data output stream.

Parameters:

outToClient: - DataOutputStream - The stream connected to the socket.

file: - File - The file to be sent.

Throws:

java.io.IOException - - If an error occurs trying to read/send the file.

sendErrorMessageToClient

private void sendErrorMessageToClient(java.io.DataOutputStream outToClient,
                            java.lang.String message)
                               throws java.io.IOException

Sends the input error message to the client over the socket by using the input data output stream after having converted it to a simple html page.

Parameters:

outToClient: - DataOutputStream - The stream connected to the socket.

message: - String - The error message.

Throws:

java.io.IOException - - If an error occurs trying to send the page.

handleConnection

private void handleConnection()
                       throws java.io.IOException

Handles a request through the socket connection.

Throws:

java.io.IOException - - If an error occurs reading/writing data to/from the socket or if opening/flushing/closing streams fails.

closeSocket

private void closeSocket()

Closes the socket and handles a possible exception by interrupting this thread.

run

public void run()

Handles the connection and closes socket when done. If an exception occurs, this thread is interrupted since we can not answer a request if e.g. connection is lost.

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread