Java tutorial
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See the License for the * specific language governing permissions and limitations * under the License. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. * */ package com.adyrhan.networkclipboard; import java.io.IOException; import java.net.ServerSocket; import java.net.Socket; import java.util.Locale; import java.util.concurrent.atomic.AtomicBoolean; import org.apache.http.ConnectionClosedException; import org.apache.http.HttpEntity; import org.apache.http.HttpEntityEnclosingRequest; import org.apache.http.HttpException; import org.apache.http.HttpRequest; import org.apache.http.HttpResponse; import org.apache.http.HttpServerConnection; import org.apache.http.MethodNotSupportedException; import org.apache.http.impl.DefaultConnectionReuseStrategy; import org.apache.http.impl.DefaultHttpResponseFactory; import org.apache.http.impl.DefaultHttpServerConnection; import org.apache.http.params.BasicHttpParams; import org.apache.http.params.CoreConnectionPNames; import org.apache.http.params.HttpParams; import org.apache.http.params.CoreProtocolPNames; import org.apache.http.protocol.BasicHttpProcessor; import org.apache.http.protocol.HttpContext; import org.apache.http.protocol.BasicHttpContext; import org.apache.http.protocol.HttpRequestHandler; import org.apache.http.protocol.HttpRequestHandlerRegistry; import org.apache.http.protocol.HttpService; import org.apache.http.protocol.ResponseConnControl; import org.apache.http.protocol.ResponseContent; import org.apache.http.protocol.ResponseDate; import org.apache.http.protocol.ResponseServer; import com.adyrsoft.framework.android.InputStreamUtils; import android.util.Log; /** * This HTTP/1.1 compliant server is a slightly improved version of the one available here, * https://svn.apache.org/repos/asf/httpcomponents/httpcore/tags/4.0.1/httpcore/src/examples/org/apache/http/examples/ElementalHttpServer.java * modified to receive remote clipboard data, and to log errors the Android way. * * HttpServer is the main object here and replaces the class containing the main static method. */ public class HttpServer { public static final String TAG = "HttpServer"; private AtomicBoolean mIsRunning; private RequestListenerThread mThread; private ServerSocket mSocket; public HttpServer() { mIsRunning = new AtomicBoolean(false); } public boolean isRunning() { return mIsRunning.get(); } public void startServer(int port, NewDataListener listener) throws PortIOError { try { if (!mIsRunning.get()) { mThread = new RequestListenerThread(port, listener, mIsRunning); mSocket = mThread.serversocket; mThread.setDaemon(false); mThread.start(); while (!mIsRunning.get()) { Thread.sleep(10); } } } catch (IOException e) { throw new PortIOError(port); } catch (InterruptedException e) { Log.e(TAG, null, e); } } public void stopServer() { try { Log.d(TAG, "HttpServer.stopServer() called! mIsRunning value is " + Boolean.toString(mIsRunning.get())); if (mIsRunning.get() && mThread != null) { Log.d(TAG, "Trying to stop Http server..."); mThread.interrupt(); mSocket.close(); while (mIsRunning.get()) { Thread.sleep(10); } } } catch (IOException e) { Log.e(TAG, "Error while trying to close socket"); } catch (InterruptedException e) { Log.e(TAG, null, e); } } public interface NewDataListener { public void onNewText(String text); } static class HttpClipboardHandler implements HttpRequestHandler { public static final String TAG = "HttpClipboardHandler"; private NewDataListener listener; public HttpClipboardHandler(NewDataListener listener) { if (listener == null) { throw new NullPointerException("NewDataListener cannot be null"); } this.listener = listener; } public void handle(final HttpRequest request, final HttpResponse response, final HttpContext context) throws HttpException, IOException { String method = request.getRequestLine().getMethod().toUpperCase(Locale.ENGLISH); if (!method.equals("POST")) { throw new MethodNotSupportedException(method + " method not supported"); } if (request instanceof HttpEntityEnclosingRequest) { HttpEntity entity = ((HttpEntityEnclosingRequest) request).getEntity(); String content = InputStreamUtils.toString(entity.getContent()); String[] nameValue = content.split("\\s*=\\s*"); if (nameValue.length == 2) { listener.onNewText(nameValue[1]); } else { response.setStatusCode(422); } } } } static class RequestListenerThread extends Thread { private static final String TAG = "RequestListenerThread"; public final ServerSocket serversocket; private final HttpParams params; private final HttpService httpService; private final AtomicBoolean runningStatus; public RequestListenerThread(int port, NewDataListener listener, AtomicBoolean runningStatus) throws IOException { this.serversocket = new ServerSocket(port); this.params = new BasicHttpParams(); this.params.setIntParameter(CoreConnectionPNames.SO_TIMEOUT, 5000) .setIntParameter(CoreConnectionPNames.SOCKET_BUFFER_SIZE, 8 * 1024) .setBooleanParameter(CoreConnectionPNames.STALE_CONNECTION_CHECK, false) .setBooleanParameter(CoreConnectionPNames.TCP_NODELAY, true) .setParameter(CoreProtocolPNames.ORIGIN_SERVER, "HttpComponents/1.1"); // Set up the HTTP protocol processor BasicHttpProcessor httpproc = new BasicHttpProcessor(); httpproc.addInterceptor(new ResponseDate()); httpproc.addInterceptor(new ResponseServer()); httpproc.addInterceptor(new ResponseContent()); httpproc.addInterceptor(new ResponseConnControl()); // Set up request handlers HttpRequestHandlerRegistry registry = new HttpRequestHandlerRegistry(); registry.register("*", new HttpClipboardHandler(listener)); // Set up the HTTP service this.httpService = new HttpService(httpproc, new DefaultConnectionReuseStrategy(), new DefaultHttpResponseFactory()); this.httpService.setParams(this.params); this.httpService.setHandlerResolver(registry); this.runningStatus = runningStatus; } public void run() { Log.d(TAG, "Listening on port " + this.serversocket.getLocalPort()); runningStatus.set(true); while (!Thread.interrupted()) { try { // Set up HTTP connection Socket socket = this.serversocket.accept(); DefaultHttpServerConnection conn = new DefaultHttpServerConnection(); Log.d(TAG, "Incoming connection from " + socket.getInetAddress()); conn.bind(socket, this.params); // Start worker thread Thread t = new WorkerThread(this.httpService, conn); t.setDaemon(true); t.start(); } catch (IOException e) { Log.w(TAG, "I/O error initialising connection thread: " + e.getMessage()); break; } } runningStatus.set(false); } } static class WorkerThread extends Thread { public static final String TAG = "WorkerThread"; private final HttpService httpservice; private final HttpServerConnection conn; public WorkerThread(final HttpService httpservice, final HttpServerConnection conn) { super(); this.httpservice = httpservice; this.conn = conn; } public void run() { Log.d(TAG, "New connection thread"); HttpContext context = new BasicHttpContext(null); try { while (!Thread.interrupted() && this.conn.isOpen()) { this.httpservice.handleRequest(this.conn, context); } } catch (ConnectionClosedException ex) { Log.w(TAG, "Client closed connection"); } catch (IOException ex) { Log.e(TAG, "I/O error: " + ex.getMessage()); } catch (HttpException ex) { Log.e(TAG, "Unrecoverable HTTP protocol violation: " + ex.getMessage()); } finally { try { this.conn.shutdown(); } catch (IOException ignore) { } } } } }