Created
October 16, 2014 13:17
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import java.net.*; | |
import java.io.*; | |
/** | |
* Class <em>Client</em> is a class representing a simple | |
* HTTP client. | |
* | |
* @author iCarnegie, Inc (CTE) | |
* @version 1.0 | |
*/ | |
public class Client | |
{ | |
/** | |
* default HTTP port is port 80 | |
*/ | |
private static int port = 80; | |
/** | |
* Allow a maximum buffer size of 192 bytes | |
*/ | |
private static int buffer_size = 8192; | |
/** | |
* The end of line character sequence. | |
*/ | |
private static String CRLF = "\r\n"; | |
/** | |
* Input is taken from the keyboard | |
*/ | |
static BufferedReader keyboard = new BufferedReader(new InputStreamReader(System.in)); | |
/** | |
* Output is written to the screen (standard out) | |
*/ | |
static PrintWriter screen = new PrintWriter (System.out, true); | |
public static void main( String [] args ) { | |
try { | |
/** | |
* Create a new HttpClient object. | |
*/ | |
HttpClient myClient = new HttpClient(); | |
/** | |
* Parse the input arguments. | |
*/ | |
if (args.length != 1) { | |
System.err.println("Usage: Client <server>"); | |
System.exit(0); | |
} | |
/** | |
* Connect to the input server | |
*/ | |
myClient.connect( args[0] ); | |
/** | |
* Read the get request from the terminal. | |
*/ | |
screen.println(args[0] + " is listening to your request:"); | |
String request = keyboard.readLine(); | |
/** | |
* Be sure to add the necessary end-of-line characters to | |
* the request. | |
*/ | |
request += CRLF + CRLF; | |
/** | |
* Ask the client to process the GET request. | |
*/ | |
myClient.processGetRequest( request ); | |
/** | |
* Get the headers and display them. | |
*/ | |
screen.println( "Header: \n" ); | |
screen.print( myClient.getHeader() + "\n" ); | |
screen.flush(); | |
/** | |
* Ask the user to input a name to save the resultant web page. | |
*/ | |
screen.println(); | |
screen.print("Enter the name of the file to save: "); | |
screen.flush(); | |
String filename = keyboard.readLine(); | |
FileOutputStream outfile = new FileOutputStream(filename); | |
/** | |
* Save the response to the specified file. | |
*/ | |
String response = myClient.getResponse(); | |
outfile.write( response.getBytes() ); | |
outfile.flush(); | |
outfile.close(); | |
/** | |
* Close the connection client. | |
*/ | |
myClient.close(); | |
} catch( Exception e ) { | |
e.printStackTrace(); | |
} | |
} | |
} | |
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