432 lines
16 KiB
Java
432 lines
16 KiB
Java
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/*
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* This is the source code of Telegram for Android v. 1.2.3.
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* It is licensed under GNU GPL v. 2 or later.
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* You should have received a copy of the license in this archive (see LICENSE).
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*
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* Copyright Nikolai Kudashov, 2013.
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*/
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package org.telegram.messenger;
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import android.util.Log;
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import java.io.IOException;
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import java.net.InetSocketAddress;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.util.LinkedList;
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import java.util.Queue;
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import java.util.Timer;
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import java.util.TimerTask;
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import jawnae.pyronet.PyroClient;
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import jawnae.pyronet.PyroSelector;
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import jawnae.pyronet.events.PyroClientAdapter;
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public class TcpConnection extends PyroClientAdapter {
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public enum TcpConnectionState {
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TcpConnectionStageIdle,
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TcpConnectionStageConnecting,
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TcpConnectionStageReconnecting,
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TcpConnectionStageConnected,
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TcpConnectionStageSuspended
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}
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public abstract static interface TcpConnectionDelegate {
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public abstract void tcpConnectionClosed(TcpConnection connection);
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public abstract void tcpConnectionConnected(TcpConnection connection);
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public abstract void tcpConnectionQuiackAckReceived(TcpConnection connection, int ack);
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public abstract void tcpConnectionReceivedData(TcpConnection connection, byte[] data);
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}
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private static PyroSelector selector;
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private PyroClient client;
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public TcpConnectionState connectionState;
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private Queue<byte[]> packetsQueue;
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public volatile int channelToken = 0;
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private String hostAddress;
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private int hostPort;
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public int datacenterId;
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private int failedConnectionCount;
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public TcpConnectionDelegate delegate;
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private ByteBuffer restOfTheData;
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public int transportRequestClass;
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private boolean firstPacket;
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private Timer reconnectTimer;
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public TcpConnection(String ip, int port) {
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if (selector == null) {
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selector = new PyroSelector();
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selector.spawnNetworkThread("network thread");
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}
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packetsQueue = new LinkedList<byte[]>();
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hostAddress = ip;
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hostPort = port;
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connectionState = TcpConnectionState.TcpConnectionStageIdle;
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}
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static volatile Integer nextChannelToken = 1;
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static int generateChannelToken() {
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return nextChannelToken++;
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}
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public void connect() {
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selector.scheduleTask(new Runnable() {
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@Override
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public void run() {
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if (connectionState == TcpConnectionState.TcpConnectionStageConnected || connectionState == TcpConnectionState.TcpConnectionStageConnecting) {
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return;
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}
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connectionState = TcpConnectionState.TcpConnectionStageConnecting;
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try {
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if (ConnectionsManager.DEBUG_VERSION) {
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Log.d("tmessages", String.format(this + " Connecting (%s:%d)", hostAddress, hostPort));
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}
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firstPacket = true;
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restOfTheData = null;
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if (client != null) {
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client.removeListener(TcpConnection.this);
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client.dropConnection();
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}
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client = selector.connect(new InetSocketAddress(hostAddress, hostPort));
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client.addListener(TcpConnection.this);
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client.setTimeout(35000);
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selector.wakeup();
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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});
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}
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public void suspendConnection(boolean task) {
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if (ConnectionsManager.DEBUG_VERSION) {
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Log.d("tmessages", "suspend connnection " + this);
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}
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if (task) {
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selector.scheduleTask(new Runnable() {
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@Override
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public void run() {
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if (reconnectTimer != null) {
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reconnectTimer.cancel();
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reconnectTimer = null;
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}
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if (connectionState == TcpConnectionState.TcpConnectionStageIdle || connectionState == TcpConnectionState.TcpConnectionStageSuspended) {
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return;
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}
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connectionState = TcpConnectionState.TcpConnectionStageSuspended;
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if (client != null) {
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client.dropConnection();
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client = null;
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}
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}
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});
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} else {
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if (reconnectTimer != null) {
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reconnectTimer.cancel();
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reconnectTimer = null;
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}
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if (connectionState == TcpConnectionState.TcpConnectionStageIdle) {
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return;
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}
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connectionState = TcpConnectionState.TcpConnectionStageSuspended;
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if (client != null) {
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client.dropConnection();
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client = null;
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}
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}
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}
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public void resumeConnection() {
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}
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private void reconnect() {
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suspendConnection(false);
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connectionState = TcpConnectionState.TcpConnectionStageReconnecting;
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connect();
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}
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public void sendData(final byte[] data, final boolean reportAck, final boolean startResponseTimeout) {
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selector.scheduleTask(new Runnable() {
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@Override
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public void run() {
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if (connectionState == TcpConnectionState.TcpConnectionStageIdle ||
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connectionState == TcpConnectionState.TcpConnectionStageReconnecting ||
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connectionState == TcpConnectionState.TcpConnectionStageSuspended) {
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connect();
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}
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int packetLength = data.length / 4;
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SerializedData buffer = new SerializedData();
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if (packetLength < 0x7f) {
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if (reportAck) {
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packetLength |= (1 << 7);
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}
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buffer.writeByte(packetLength);
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} else {
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packetLength = (packetLength << 8) + 0x7f;
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if (reportAck) {
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packetLength |= (1 << 7);
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}
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buffer.writeInt32(packetLength);
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}
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buffer.writeRaw(data);
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final byte[] packet = buffer.toByteArray();
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if (client != null && !client.isDisconnected()) {
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ByteBuffer sendBuffer = ByteBuffer.allocate((firstPacket ? 1 : 0) + packet.length);
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sendBuffer.rewind();
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sendBuffer.order(ByteOrder.LITTLE_ENDIAN);
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if (firstPacket) {
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sendBuffer.put((byte)0xef);
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firstPacket = false;
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}
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sendBuffer.put(packet);
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sendBuffer.rewind();
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client.write(sendBuffer);
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} else {
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packetsQueue.add(packet);
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}
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}
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});
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}
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private void readData(ByteBuffer buffer) throws Exception {
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if (ConnectionsManager.DEBUG_VERSION) {
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Log.d("tmessages", "received data = " + buffer.limit());
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}
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if (restOfTheData != null) {
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if (ConnectionsManager.DEBUG_VERSION) {
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Log.d("tmessages", "there is rest of data " + restOfTheData.limit());
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}
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ByteBuffer newBuffer = ByteBuffer.allocate(restOfTheData.limit() + buffer.limit());
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newBuffer.put(restOfTheData);
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newBuffer.put(buffer);
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buffer = newBuffer;
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restOfTheData = null;
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}
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buffer.order(ByteOrder.LITTLE_ENDIAN);
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buffer.rewind();
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while (buffer.hasRemaining()) {
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int currentPacketLength;
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buffer.mark();
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byte fByte = buffer.get();
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if ((fByte & (1 << 7)) != 0) {
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buffer.reset();
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if (buffer.remaining() < 4) {
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restOfTheData = ByteBuffer.allocate(buffer.remaining());
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restOfTheData.put(buffer);
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restOfTheData.rewind();
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break;
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}
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buffer.order(ByteOrder.BIG_ENDIAN);
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final int ackId = buffer.getInt() & (~(1 << 31));
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if (delegate != null) {
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Utilities.stageQueue.postRunnable(new Runnable() {
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@Override
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public void run() {
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delegate.tcpConnectionQuiackAckReceived(TcpConnection.this, ackId);
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}
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});
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}
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buffer.order(ByteOrder.LITTLE_ENDIAN);
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continue;
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}
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if (fByte != 0x7f) {
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currentPacketLength = ((int)fByte) * 4;
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} else {
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buffer.reset();
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if (buffer.remaining() < 4) {
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restOfTheData = ByteBuffer.allocate(buffer.remaining());
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restOfTheData.put(buffer);
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restOfTheData.rewind();
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break;
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}
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currentPacketLength = (buffer.getInt() >> 8) * 4;
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}
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if (currentPacketLength < buffer.remaining()) {
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if (ConnectionsManager.DEBUG_VERSION) {
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Log.d("tmessages", this + " Received message len " + currentPacketLength + " but packet larger " + buffer.remaining());
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}
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} else if (currentPacketLength == buffer.remaining()) {
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if (ConnectionsManager.DEBUG_VERSION) {
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Log.d("tmessages", this + " Received message len " + currentPacketLength + " equal to packet size");
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}
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} else {
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if (ConnectionsManager.DEBUG_VERSION) {
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Log.d("tmessages", this + " Received packet size less(" + buffer.remaining() + ") then message size(" + currentPacketLength + ")");
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}
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buffer.reset();
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restOfTheData = ByteBuffer.allocate(buffer.remaining());
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restOfTheData.order(ByteOrder.LITTLE_ENDIAN);
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restOfTheData.put(buffer);
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restOfTheData.rewind();
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return;
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}
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if (currentPacketLength % 4 != 0 || currentPacketLength > 2 * 1024 * 1024) {
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if (ConnectionsManager.DEBUG_VERSION) {
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Log.e("tmessages", "Invalid packet length");
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}
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reconnect();
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return;
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}
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final byte[] packetData = new byte[currentPacketLength];
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buffer.get(packetData);
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if (delegate != null) {
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Utilities.stageQueue.postRunnable(new Runnable() {
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@Override
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public void run() {
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delegate.tcpConnectionReceivedData(TcpConnection.this, packetData);
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}
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});
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}
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}
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}
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public void handleDisconnect(PyroClient client, IOException e) {
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if (reconnectTimer != null) {
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reconnectTimer.cancel();
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reconnectTimer = null;
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}
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if (ConnectionsManager.DEBUG_VERSION) {
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if (e != null) {
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Log.d("tmessages", "Disconnected " + this + " with error " + e);
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} else {
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Log.d("tmessages", "Disconnected " + this);
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}
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}
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firstPacket = true;
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restOfTheData = null;
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packetsQueue.clear();
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channelToken = 0;
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if (connectionState != TcpConnectionState.TcpConnectionStageSuspended && connectionState != TcpConnectionState.TcpConnectionStageIdle) {
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connectionState = TcpConnectionState.TcpConnectionStageIdle;
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}
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if (delegate != null) {
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Utilities.stageQueue.postRunnable(new Runnable() {
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@Override
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public void run() {
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delegate.tcpConnectionClosed(TcpConnection.this);
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}
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});
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}
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if (connectionState == TcpConnectionState.TcpConnectionStageIdle && (!packetsQueue.isEmpty() ||
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(transportRequestClass & RPCRequest.RPCRequestClassGeneric) != 0 && (datacenterId == ConnectionsManager.Instance.currentDatacenterId || datacenterId == ConnectionsManager.Instance.movingToDatacenterId))) {
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failedConnectionCount++;
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if (ConnectionsManager.DEBUG_VERSION) {
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Log.d("tmessages", "Reconnect " + hostAddress + ":" + hostPort + " " + this);
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}
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try {
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reconnectTimer = new Timer();
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reconnectTimer.schedule(new TimerTask() {
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@Override
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public void run() {
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selector.scheduleTask(new Runnable() {
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@Override
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public void run() {
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try {
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if (reconnectTimer != null) {
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reconnectTimer.cancel();
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reconnectTimer = null;
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}
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} catch (Exception e2) {
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e2.printStackTrace();
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}
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connect();
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}
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});
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}
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}, failedConnectionCount > 10 ? 500 : 200, failedConnectionCount > 10 ? 500 : 200);
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} catch (Exception e3) {
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e3.printStackTrace();
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}
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}
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}
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@Override
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public void connectedClient(PyroClient client) {
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//if (!ConnectionsManager.isNetworkOnline()) {
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// return;
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//}
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connectionState = TcpConnectionState.TcpConnectionStageConnected;
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channelToken = generateChannelToken();
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if (ConnectionsManager.DEBUG_VERSION) {
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Log.d("tmessages", String.format(this + " Connected (%s:%d)", hostAddress, hostPort));
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}
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if (delegate != null) {
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Utilities.stageQueue.postRunnable(new Runnable() {
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@Override
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public void run() {
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delegate.tcpConnectionConnected(TcpConnection.this);
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}
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});
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}
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while (packetsQueue.size() != 0) {
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byte[] packet = packetsQueue.poll();
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ByteBuffer sendBuffer = ByteBuffer.allocate((firstPacket ? 1 : 0) + packet.length);
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sendBuffer.order(ByteOrder.LITTLE_ENDIAN);
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if (firstPacket) {
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sendBuffer.put((byte)0xef);
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firstPacket = false;
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}
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sendBuffer.put(packet);
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sendBuffer.rewind();
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client.write(sendBuffer);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
public void unconnectableClient(PyroClient client) {
|
||
|
|
handleDisconnect(client, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
public void droppedClient(PyroClient client, IOException cause) {
|
||
|
|
super.droppedClient(client, cause);
|
||
|
|
handleDisconnect(client, cause);
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
public void disconnectedClient(PyroClient client) {
|
||
|
|
handleDisconnect(client, null);
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
public void receivedData(PyroClient client, ByteBuffer data) {
|
||
|
|
try {
|
||
|
|
failedConnectionCount = 0;
|
||
|
|
readData(data);
|
||
|
|
} catch (Exception e) {
|
||
|
|
if (ConnectionsManager.DEBUG_VERSION) {
|
||
|
|
Log.d("tmessages", "read data error");
|
||
|
|
}
|
||
|
|
reconnect();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
@Override
|
||
|
|
public void sentData(PyroClient client, int bytes) {
|
||
|
|
failedConnectionCount = 0;
|
||
|
|
if (ConnectionsManager.DEBUG_VERSION) {
|
||
|
|
Log.d("tmessages", this + " bytes sent " + bytes);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|