139 lines
3.4 KiB
Java
139 lines
3.4 KiB
Java
//
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// Multithreaded Java WebServer
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// (C) 2001 Anders Gidenstam
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// (based on a lab in Computer Networking: ..)
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//
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import java.io.*;
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import java.net.*;
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import java.util.*;
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import java.net.InetAddress.*;
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public final class WebServer
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{
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public static void main(String argv[]) throws Exception
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{
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// Set port number
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int port = 0;
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// Establish the listening socket
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ServerSocket serverSocket = new ServerSocket(port);
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System.out.println("Port number is: "+serverSocket.getLocalPort());
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// Wait for and process HTTP service requests
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while (true) {
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// Wait for TCP connection
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Socket requestSocket = serverSocket.accept();
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requestSocket.setSoLinger(true, 5);
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// Create an object to handle the request
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HttpRequest request = new HttpRequest(requestSocket);
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//request.run()
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// Create a new thread for the request
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Thread thread = new Thread(request);
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// Start the thread
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thread.start();
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}
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}
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}
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final class HttpRequest implements Runnable
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{
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// Constants
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// Recognized HTTP methods
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final static class HTTP_METHOD
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{
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final static String GET = "GET";
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final static String HEAD = "HEAD";
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final static String POST = "POST";
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}
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final static String HTTPVERSION = "HTTP/1.0";
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final static String CRLF = "\r\n";
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Socket socket;
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// Constructor
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public HttpRequest(Socket socket) throws Exception
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{
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this.socket = socket;
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}
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// Implements the run() method of the Runnable interface
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public void run()
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{
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try {
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processRequest();
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} catch (Exception e) {
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System.out.println(e);
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}
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}
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// Process a HTTP request
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private void processRequest() throws Exception
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{
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// Get the input and output streams of the socket.
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InputStream ins = socket.getInputStream();
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DataOutputStream outs = new DataOutputStream(socket.getOutputStream());
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// Set up input stream filters
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BufferedReader br = new BufferedReader(new InputStreamReader(ins));
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// Get the request line of the HTTP request
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String requestLine = br.readLine();
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// Display the request line
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System.out.println();
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System.out.println("Request:");
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System.out.println(" " + requestLine);
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String[] tokens = requestLine.split(" ");
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// for(String token : tokens)
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// System.out.println("---> " + token);
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sendResponse(tokens[1],outs);
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// Close streams and sockets
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outs.close();
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br.close();
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socket.close();
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}
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private void sendResponse(String f,DataOutputStream outs)
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throws Exception{
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String response = HTTPVERSION+" 200 OK "+CRLF+"kottedala"+CRLF;
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outs.writeChars(response);
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sendBytes(new FileInputStream(f),outs);
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}
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private static void sendBytes(FileInputStream fins,
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OutputStream outs) throws Exception
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{
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// Coopy buffer
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byte[] buffer = new byte[1024];
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int bytes = 0;
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while ((bytes = fins.read(buffer)) != -1) {
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outs.write(buffer, 0, bytes);
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}
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}
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private static String contentType(String fileName)
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{
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if (fileName.toLowerCase().endsWith(".htm") ||
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fileName.toLowerCase().endsWith(".html")) {
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return "text/html";
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} else if (fileName.toLowerCase().endsWith(".gif")) {
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return "image/gif";
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} else if (fileName.toLowerCase().endsWith(".jpg")) {
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return "image/jpeg";
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} else {
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return "application/octet-stream";
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}
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}
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}
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