changed tabs to spaces + little cleanup
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Jeena Paradies
parent
d5f79cb746
commit
7de5c549ca
1 changed files with 130 additions and 119 deletions
249
WebServer.java
249
WebServer.java
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@ -11,34 +11,35 @@ 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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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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// 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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// 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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// 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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// 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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}
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final class HttpRequest implements Runnable
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@ -47,133 +48,143 @@ final class HttpRequest implements Runnable
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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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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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final static String Response200 = HTTPVERSION + " 200 OK "+CRLF;
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final static String Response404 = HTTPVERSION + " 404 Not Found "+CRLF;
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final static String Response400 = HTTPVERSION + " 400 Bad Request "+CRLF;
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final static String Response501 = HTTPVERSION + " 501 Not Implemented "+CRLF;
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final static String Location = " datalabb "+CRLF;
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final static String RESPONSE_200 = HTTPVERSION + " 200 OK " + CRLF;
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final static String RESPONSE_404 = HTTPVERSION + " 404 Not Found " + CRLF;
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final static String RESPONSE_400 = HTTPVERSION + " 400 Bad Request " + CRLF;
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final static String RESPONSE_501 = HTTPVERSION + " 501 Not Implemented " + CRLF;
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final static String LOCATION = " datalabb " + CRLF;
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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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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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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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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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Date d = new Date();
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// Set up input stream filters
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BufferedReader br = new BufferedReader(new InputStreamReader(ins));
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Date d = new Date();
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// Get the request line of the HTTP request
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String requestLine = br.readLine();
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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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// 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("\\s+");
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//System.out.println("-->"+tokens.length);
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String Request = tokens[0];
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if(tokens.length != 3){
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System.out.println("Wrong number of arguments in request!");
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outs.writeChars(Response400+Location+getDateString(d));
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}
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else if(tokens[1].charAt(0) != '/'){
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System.out.println("illegal url");
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outs.writeChars(Response501+Location+getDateString(d));
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}
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else if(Request.equals(HTTP_METHOD.GET) || Request.equals(HTTP_METHOD.HEAD)){
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FileInputStream filein;
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try{
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File f = new File("." +tokens[1]);
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filein = new FileInputStream(f);
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String response = createHeader(d,f);
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outs.writeChars(response);
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if(Request.equals(HTTP_METHOD.GET))
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sendBytes(filein,outs);
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}
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catch (FileNotFoundException e){
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outs.writeChars(Response404+getDateString(d));
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}
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} else if(Request.equals(HTTP_METHOD.POST)){
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outs.writeChars(Response501+getDateString(d));
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}
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else
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outs.writeChars(Response400+getDateString(d));
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String[] tokens = requestLine.split("\\s+");
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//System.out.println("-->"+tokens.length);
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String Request = tokens[0];
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if(tokens.length != 3) {
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System.out.println("Wrong number of arguments in request!");
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outs.writeChars(RESPONSE_400 + LOCATION + getDateString(d));
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} else if(tokens[1].charAt(0) != '/') {
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System.out.println("illegal url");
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outs.writeChars(RESPONSE_501 + LOCATION + getDateString(d));
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} else if(Request.equals(HTTP_METHOD.GET) || Request.equals(HTTP_METHOD.HEAD)) {
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FileInputStream filein;
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try {
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File f = new File("." +tokens[1]);
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filein = new FileInputStream(f);
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String response = createHeader(d,f);
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outs.writeChars(response);
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if(Request.equals(HTTP_METHOD.GET)) {
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sendBytes(filein, outs);
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}
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} catch (FileNotFoundException e) {
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outs.writeChars(RESPONSE_404 + getDateString(d));
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}
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} else if(Request.equals(HTTP_METHOD.POST)){
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outs.writeChars(RESPONSE_501 + getDateString(d));
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}
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else {
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outs.writeChars(RESPONSE_400 + getDateString(d));
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}
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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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// 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 String getDateString(Date d){
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return "Date: "+d.toString()+CRLF;
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}
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private String getDateString(Date d){
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return "Date: " + d.toString() + CRLF;
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}
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private String createHeader(Date d, File f){
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String response = Response200;
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response += getDateString(d);
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response += "Location: " + f.getName() +CRLF;
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response += "Server: Labbserver" + CRLF;
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response += "Allow: " + HTTP_METHOD.GET + " " + HTTP_METHOD.HEAD+CRLF;
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response += "Content-Length: " + f.length() +CRLF;
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response += "Content-Type: " + contentType(f.getName()) +CRLF;
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response += "Last-Modified: " + new Date(f.lastModified()).toString() +CRLF;
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return response;
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private String createHeader(Date d, File f){
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String response = RESPONSE_200;
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response += getDateString(d);
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response += "LOCATION: " + f.getName() +CRLF;
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response += "Server: Labbserver" + CRLF;
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response += "Allow: " + HTTP_METHOD.GET + " " + HTTP_METHOD.HEAD+CRLF;
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response += "Content-Length: " + f.length() +CRLF;
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response += "Content-Type: " + contentType(f.getName()) +CRLF;
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response += "Last-Modified: " + new Date(f.lastModified()).toString() +CRLF;
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return response;
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}
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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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private static void sendBytes(FileInputStream fins, 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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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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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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