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package org.openslx.filetransfer;
import java.io.File;
import java.io.IOException;
import java.io.RandomAccessFile;
import java.net.SocketTimeoutException;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocket;
import org.apache.log4j.Logger;
public class Uploader extends Transfer
{
private static final Logger log = Logger.getLogger( Uploader.class );
/***********************************************************************/
/**
* Actively establish upload connection to given peer.
*
* @param host Host name or address to connect to
* @param port Port to connect to
* @param context ssl context for establishing a secure connection
* @throws IOException
*/
public Uploader( String host, int port, SSLContext context ) throws IOException
{
super( host, port, context, log );
dataToServer.writeByte( 'U' );
}
/***********************************************************************/
/**
* Constructor for master uploader.
* Sends back the socket for datatransfer.
*
* @throws IOException
*/
public Uploader( SSLSocket socket ) throws IOException
{
super( socket, log );
}
/***********************************************************************/
/**
* Used by the peer that initiated the connection to tell the remote
* peer which part of the file is being uploaded
*
* @param startOffset start offset in bytes in the file (inclusive)
* @param endOffset end offset in file (exclusive)
* @return
*/
public boolean prepareSendRange( long startOffset, long endOffset )
{
return super.sendRange( startOffset, endOffset );
}
/***********************************************************************/
/**
* Method for sending File with filename.
*
* @param filename
*/
public boolean sendFile( String filename )
{
if ( getStartOfRange() == -1 ) {
this.close( "sendFile called when no range is set" );
return false;
}
RandomAccessFile file = null;
try {
file = new RandomAccessFile( new File( filename ), "r" );
file.seek( getStartOfRange() );
byte[] data = new byte[ 64000 ];
int hasRead = 0;
int length = getDiffOfRange();
// System.out.println( "diff of Range: " + length );
while ( hasRead < length ) {
int ret = file.read( data, 0, Math.min( length - hasRead, data.length ) );
if ( ret == -1 ) {
this.close( "Error occured in Uploader.sendFile(),"
+ " while reading from File to send." );
return false;
}
hasRead += ret;
dataToServer.write( data, 0, ret );
}
} catch ( SocketTimeoutException ste ) {
ste.printStackTrace();
sendErrorCode( "timeout" );
this.close( "Socket timeout occured ... close connection." );
return false;
} catch ( IOException ioe ) {
ioe.printStackTrace();
readMetaData();
if ( ERROR != null ) {
if ( ERROR.equals( "timeout" ) ) {
this.close( "Remote Socket timeout occured ... close connection." );
return false;
}
}
this.close( "Sending RANGE " + getStartOfRange() + ":" + getEndOfRange() + " of File "
+ filename + " failed..." );
return false;
} catch ( Exception e ) {
e.printStackTrace();
this.close( e.toString() );
return false;
} finally {
if ( file != null ) {
try {
file.close();
} catch ( IOException e ) {
}
}
}
return true;
}
}
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