+++ /dev/null
-package be.nikiroo.utils.serial.server;
-
-import java.io.IOException;
-import java.lang.reflect.Array;
-import java.net.Socket;
-import java.net.UnknownHostException;
-
-import be.nikiroo.utils.StringUtils;
-import be.nikiroo.utils.TraceHandler;
-import be.nikiroo.utils.Version;
-import be.nikiroo.utils.serial.Importer;
-
-/**
- * This class implements a simple server that can bridge two other
- * {@link Server}s.
- * <p>
- * It can, of course, inspect the data that goes through it (by default, it
- * prints traces of the data).
- * <p>
- * Note: this {@link ServerBridge} has to be discarded after use (cannot be
- * started twice).
- *
- * @author niki
- */
-public class ServerBridge extends Server {
- private final String forwardToHost;
- private final int forwardToPort;
- private final boolean forwardToSsl;
-
- /**
- * Create a new server that will start listening on the network when
- * {@link ServerBridge#start()} is called.
- *
- * @param port
- * the port to listen on, or 0 to assign any unallocated port
- * found (which can later on be queried via
- * {@link ServerBridge#getPort()}
- * @param ssl
- * use an SSL connection (or not)
- * @param forwardToHost
- * the host server to forward the calls to
- * @param forwardToPort
- * the host port to forward the calls to
- * @param forwardToSsl
- * use an SSL connection for the forward server or not
- *
- * @throws IOException
- * in case of I/O error
- * @throws UnknownHostException
- * if the IP address of the host could not be determined
- * @throws IllegalArgumentException
- * if the port parameter is outside the specified range of valid
- * port values, which is between 0 and 65535, inclusive
- */
- public ServerBridge(int port, boolean ssl, String forwardToHost,
- int forwardToPort, boolean forwardToSsl) throws IOException {
- super(port, ssl);
- this.forwardToHost = forwardToHost;
- this.forwardToPort = forwardToPort;
- this.forwardToSsl = forwardToSsl;
- }
-
- /**
- * Create a new server that will start listening on the network when
- * {@link ServerBridge#start()} is called.
- *
- * @param name
- * the server name (only used for debug info and traces)
- * @param port
- * the port to listen on
- * @param ssl
- * use an SSL connection (or not)
- * @param forwardToHost
- * the host server to forward the calls to
- * @param forwardToPort
- * the host port to forward the calls to
- * @param forwardToSsl
- * use an SSL connection for the forward server or not
- *
- * @throws IOException
- * in case of I/O error
- * @throws UnknownHostException
- * if the IP address of the host could not be determined
- * @throws IllegalArgumentException
- * if the port parameter is outside the specified range of valid
- * port values, which is between 0 and 65535, inclusive
- */
- public ServerBridge(String name, int port, boolean ssl,
- String forwardToHost, int forwardToPort, boolean forwardToSsl)
- throws IOException {
- super(name, port, ssl);
- this.forwardToHost = forwardToHost;
- this.forwardToPort = forwardToPort;
- this.forwardToSsl = forwardToSsl;
- }
-
- /**
- * The traces handler for this {@link Server}.
- * <p>
- * The trace levels are handled as follow:
- * <ul>
- * <li>1: it will only print basic IN/OUT messages with length</li>
- * <li>2: it will try to interpret it as an object (SLOW) and print the
- * object class if possible</li>
- * <li>3: it will try to print the {@link Object#toString()} value, or the
- * data if it is not an object</li>
- * <li>4: it will also print the unzipped serialised value if it is an
- * object</li>
- * </ul>
- *
- * @param tracer
- * the new traces handler
- */
- @Override
- public void setTraceHandler(TraceHandler tracer) {
- super.setTraceHandler(tracer);
- }
-
- @Override
- protected ConnectActionServer createConnectActionServer(Socket s) {
- return new ConnectActionServerString(s) {
- @Override
- public void action(final Version clientVersion) throws Exception {
- onClientContact(clientVersion);
- final ConnectActionServerString bridge = this;
-
- try {
- new ConnectActionClientString(forwardToHost, forwardToPort,
- forwardToSsl, clientVersion) {
- @Override
- public void action(final Version serverVersion)
- throws Exception {
- onServerContact(serverVersion);
-
- for (String fromClient = bridge.rec(); fromClient != null; fromClient = bridge
- .rec()) {
- onRec(clientVersion, fromClient);
- String fromServer = send(fromClient);
- onSend(serverVersion, fromServer);
- bridge.send(fromServer);
- }
-
- getTraceHandler().trace("=== DONE", 1);
- getTraceHandler().trace("", 1);
- }
-
- @Override
- protected void onError(Exception e) {
- ServerBridge.this.onError(e);
- }
- }.connect();
- } catch (Exception e) {
- ServerBridge.this.onError(e);
- }
- }
- };
- }
-
- /**
- * This is the method that is called each time a client contact us.
- *
- * @param clientVersion
- * the client version
- */
- protected void onClientContact(Version clientVersion) {
- getTraceHandler().trace(">>> CLIENT " + clientVersion);
- }
-
- /**
- * This is the method that is called each time a client contact us.
- *
- * @param serverVersion
- * the server version
- */
- protected void onServerContact(Version serverVersion) {
- getTraceHandler().trace("<<< SERVER " + serverVersion);
- getTraceHandler().trace("");
- }
-
- /**
- * This is the method that is called each time a client contact us.
- *
- * @param clientVersion
- * the client version
- * @param data
- * the data sent by the client
- */
- protected void onRec(Version clientVersion, String data) {
- trace(">>> CLIENT (" + clientVersion + ")", data);
- }
-
- /**
- * This is the method that is called each time the forwarded server contact
- * us.
- *
- * @param serverVersion
- * the client version
- * @param data
- * the data sent by the client
- */
- protected void onSend(Version serverVersion, String data) {
- trace("<<< SERVER (" + serverVersion + ")", data);
- }
-
- @Override
- public void run() {
- getTraceHandler().trace(
- getName() + ": will forward to " + forwardToHost + ":"
- + forwardToPort + " ("
- + (forwardToSsl ? "SSL" : "plain text") + ")");
- super.run();
- }
-
- /**
- * Trace the data with the given prefix.
- *
- * @param prefix
- * the prefix (client, server, version...)
- * @param data
- * the data to trace
- */
- private void trace(String prefix, String data) {
- int size = data.length();
- String ssize = size + " byte";
- if (size > 1) {
- ssize = size + " bytes";
- if (size >= 1000) {
- size = size / 1000;
- ssize = size + " kb";
- if (size > 1000) {
- size = size / 1000;
- ssize = size + " MB";
- }
- }
- }
-
- getTraceHandler().trace(prefix + ": " + ssize, 1);
-
- if (getTraceHandler().getTraceLevel() >= 2) {
- try {
- if (data.startsWith("ZIP:")) {
- data = StringUtils.unzip64(data.substring(4));
- }
-
- Object obj = new Importer().read(data).getValue();
- if (obj == null) {
- getTraceHandler().trace("NULL", 2);
- getTraceHandler().trace("NULL", 3);
- getTraceHandler().trace("NULL", 4);
- } else {
- if (obj.getClass().isArray()) {
- getTraceHandler().trace(
- "(" + obj.getClass() + ") with "
- + Array.getLength(obj) + "element(s)",
- 3);
- } else {
- getTraceHandler().trace("(" + obj.getClass() + ")", 2);
- }
- getTraceHandler().trace("" + obj.toString(), 3);
- getTraceHandler().trace(data, 4);
- }
- } catch (NoSuchMethodException e) {
- getTraceHandler().trace("(not an object)", 2);
- getTraceHandler().trace(data, 3);
- getTraceHandler().trace("", 4);
- } catch (NoSuchFieldException e) {
- getTraceHandler().trace(
- "(incompatible: " + e.getMessage() + ")", 2);
- getTraceHandler().trace(data, 3);
- getTraceHandler().trace("", 4);
- } catch (ClassNotFoundException e) {
- getTraceHandler().trace(
- "(unknown object: " + e.getMessage() + ")", 2);
- getTraceHandler().trace(data, 3);
- getTraceHandler().trace("", 4);
- } catch (Exception e) {
- getTraceHandler().trace(
- "(decode error: " + e.getMessage() + ")", 2);
- getTraceHandler().trace(data, 3);
- getTraceHandler().trace("", 4);
- }
-
- getTraceHandler().trace("", 2);
- }
- }
-}
git://git.nikiroo.be / nikiroo-utils.git / blobdiff