import java.io.*;
import java.net.*;
import java.util.Date;
// wget -S
public class ProxyServer2
{
public static void main( String[] args )
{
int port = 8126;
// TO DO: read port from argv[1]
ProxyServer2 theServer = new ProxyServer2( port );
}
public ProxyServer2( int port )
{
System.out.println( "Server started at " + new Date() );
try
{
// Create a server (listener) socket
ServerSocket serverSocket = new ServerSocket( port, 5 );
// Note the second arg is 5, which is the backlog....
while ( true )
{
// Listen for a connection request from a client
System.out.println( "Blocking on accept()" );
Socket clientSocket = serverSocket.accept(); // BLOCK!
System.out.println( "Client connection rcvd at " + new Date() );
// StringBuilder request = new StringBuilder();
InputStream stream = clientSocket.getInputStream();
// ADD BUFFERED READER:
BufferedReader in = new BufferedReader( new InputStreamReader( stream ) );
String request = in.readLine();
System.out.println( "Request-Line is: " + request );
String header;
while ( ( header = in.readLine() ) != null )
{
System.out.println( "RCVD: " + header );
//header = header.trim();
if ( header.length() == 0 ) break; // end of headers
if ( header.startsWith( "Content-Length:" ) )
{
int x = Integer.parseInt( header.substring( 16 ) );
System.out.println( "Content length is " + x );
}
}
// TO DO: handle POST requests by
// relying on Content-Length in the
// headers.
String page = "HIWOW
";
StringBuilder response = new StringBuilder();
response.append( "HTTP/1.0 200 OK\r\n" );
response.append( "Connection: close\r\n" );
response.append( "Server: SampleProxyServer\r\n" );
response.append( "Content-Type: text/html\r\n" );
response.append( "Date: " + new Date() + "\r\n" );
response.append( "Content-Length: " + page.length() + "\r\n" );
response.append( "Last-Modified: " + new Date() + "\r\n" );
response.append( "\r\n" );
response.append( page );
OutputStream ostream = clientSocket.getOutputStream();
ostream.write( response.toString().getBytes() );
System.out.println( "Sent response" );
}
}
catch ( IOException ex )
{
System.err.println( "ERROR: " + ex );
}
}
}