| // |
| // ======================================================================== |
| // Copyright (c) 1995-2014 Mort Bay Consulting Pty. Ltd. |
| // ------------------------------------------------------------------------ |
| // All rights reserved. This program and the accompanying materials |
| // are made available under the terms of the Eclipse Public License v1.0 |
| // and Apache License v2.0 which accompanies this distribution. |
| // |
| // The Eclipse Public License is available at |
| // http://www.eclipse.org/legal/epl-v10.html |
| // |
| // The Apache License v2.0 is available at |
| // http://www.opensource.org/licenses/apache2.0.php |
| // |
| // You may elect to redistribute this code under either of these licenses. |
| // ======================================================================== |
| // |
| |
| package org.eclipse.jetty.websocket; |
| |
| import java.io.IOException; |
| import java.io.UnsupportedEncodingException; |
| import java.security.MessageDigest; |
| import java.util.Collections; |
| import java.util.List; |
| |
| import org.eclipse.jetty.io.AbstractConnection; |
| import org.eclipse.jetty.io.AsyncEndPoint; |
| import org.eclipse.jetty.io.Buffer; |
| import org.eclipse.jetty.io.ByteArrayBuffer; |
| import org.eclipse.jetty.io.Connection; |
| import org.eclipse.jetty.io.EndPoint; |
| import org.eclipse.jetty.util.B64Code; |
| import org.eclipse.jetty.util.StringUtil; |
| import org.eclipse.jetty.util.Utf8StringBuilder; |
| import org.eclipse.jetty.util.log.Log; |
| import org.eclipse.jetty.util.log.Logger; |
| import org.eclipse.jetty.websocket.WebSocket.OnBinaryMessage; |
| import org.eclipse.jetty.websocket.WebSocket.OnControl; |
| import org.eclipse.jetty.websocket.WebSocket.OnFrame; |
| import org.eclipse.jetty.websocket.WebSocket.OnTextMessage; |
| |
| public class WebSocketConnectionD06 extends AbstractConnection implements WebSocketConnection |
| { |
| private static final Logger LOG = Log.getLogger(WebSocketConnectionD06.class); |
| |
| final static byte OP_CONTINUATION = 0x00; |
| final static byte OP_CLOSE = 0x01; |
| final static byte OP_PING = 0x02; |
| final static byte OP_PONG = 0x03; |
| final static byte OP_TEXT = 0x04; |
| final static byte OP_BINARY = 0x05; |
| |
| final static int CLOSE_NORMAL=1000; |
| final static int CLOSE_SHUTDOWN=1001; |
| final static int CLOSE_PROTOCOL=1002; |
| final static int CLOSE_BADDATA=1003; |
| final static int CLOSE_LARGE=1004; |
| |
| static boolean isLastFrame(int flags) |
| { |
| return (flags&0x8)!=0; |
| } |
| |
| static boolean isControlFrame(int opcode) |
| { |
| switch(opcode) |
| { |
| case OP_CLOSE: |
| case OP_PING: |
| case OP_PONG: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| private final static byte[] MAGIC; |
| private final WebSocketParser _parser; |
| private final WebSocketGenerator _generator; |
| private final WebSocket _webSocket; |
| private final OnFrame _onFrame; |
| private final OnBinaryMessage _onBinaryMessage; |
| private final OnTextMessage _onTextMessage; |
| private final OnControl _onControl; |
| private final String _protocol; |
| private volatile boolean _closedIn; |
| private volatile boolean _closedOut; |
| private int _maxTextMessageSize; |
| private int _maxBinaryMessageSize=-1; |
| |
| static |
| { |
| try |
| { |
| MAGIC="258EAFA5-E914-47DA-95CA-C5AB0DC85B11".getBytes(StringUtil.__ISO_8859_1); |
| } |
| catch (UnsupportedEncodingException e) |
| { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| private final WebSocketParser.FrameHandler _frameHandler= new FrameHandlerD06(); |
| private final WebSocket.FrameConnection _connection = new FrameConnectionD06(); |
| |
| |
| /* ------------------------------------------------------------ */ |
| public WebSocketConnectionD06(WebSocket websocket, EndPoint endpoint, WebSocketBuffers buffers, long timestamp, int maxIdleTime, String protocol) |
| throws IOException |
| { |
| super(endpoint,timestamp); |
| |
| _endp.setMaxIdleTime(maxIdleTime); |
| |
| _webSocket = websocket; |
| _onFrame=_webSocket instanceof OnFrame ? (OnFrame)_webSocket : null; |
| _onTextMessage=_webSocket instanceof OnTextMessage ? (OnTextMessage)_webSocket : null; |
| _onBinaryMessage=_webSocket instanceof OnBinaryMessage ? (OnBinaryMessage)_webSocket : null; |
| _onControl=_webSocket instanceof OnControl ? (OnControl)_webSocket : null; |
| _generator = new WebSocketGeneratorD06(buffers, _endp,null); |
| _parser = new WebSocketParserD06(buffers, endpoint, _frameHandler,true); |
| _protocol=protocol; |
| |
| _maxTextMessageSize=buffers.getBufferSize(); |
| _maxBinaryMessageSize=-1; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public WebSocket.Connection getConnection() |
| { |
| return _connection; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public Connection handle() throws IOException |
| { |
| try |
| { |
| // handle the framing protocol |
| boolean progress=true; |
| |
| while (progress) |
| { |
| int flushed=_generator.flush(); |
| int filled=_parser.parseNext(); |
| |
| progress = flushed>0 || filled>0; |
| |
| if (filled<0 || flushed<0) |
| { |
| _endp.close(); |
| break; |
| } |
| } |
| } |
| catch(IOException e) |
| { |
| try |
| { |
| _endp.close(); |
| } |
| catch(IOException e2) |
| { |
| LOG.ignore(e2); |
| } |
| throw e; |
| } |
| finally |
| { |
| if (_endp.isOpen()) |
| { |
| if (_closedIn && _closedOut && _generator.isBufferEmpty()) |
| _endp.close(); |
| else if (_endp.isInputShutdown() && !_closedIn) |
| closeIn(CLOSE_PROTOCOL,null); |
| else |
| checkWriteable(); |
| } |
| |
| } |
| return this; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void onInputShutdown() throws IOException |
| { |
| // TODO |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isIdle() |
| { |
| return _parser.isBufferEmpty() && _generator.isBufferEmpty(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| public void onIdleExpired(long idleForMs) |
| { |
| closeOut(WebSocketConnectionD06.CLOSE_NORMAL,"Idle"); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isSuspended() |
| { |
| return false; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void onClose() |
| { |
| _webSocket.onClose(WebSocketConnectionD06.CLOSE_NORMAL,""); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public synchronized void closeIn(int code,String message) |
| { |
| LOG.debug("ClosedIn {} {}",this,message); |
| try |
| { |
| if (_closedOut) |
| _endp.close(); |
| else |
| closeOut(code,message); |
| } |
| catch(IOException e) |
| { |
| LOG.ignore(e); |
| } |
| finally |
| { |
| _closedIn=true; |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public synchronized void closeOut(int code,String message) |
| { |
| LOG.debug("ClosedOut {} {}",this,message); |
| try |
| { |
| if (_closedIn || _closedOut) |
| _endp.close(); |
| else |
| { |
| if (code<=0) |
| code=WebSocketConnectionD06.CLOSE_NORMAL; |
| byte[] bytes = ("xx"+(message==null?"":message)).getBytes(StringUtil.__ISO_8859_1); |
| bytes[0]=(byte)(code/0x100); |
| bytes[1]=(byte)(code%0x100); |
| _generator.addFrame((byte)0x8,WebSocketConnectionD06.OP_CLOSE,bytes,0,bytes.length); |
| } |
| _generator.flush(); |
| |
| } |
| catch(IOException e) |
| { |
| LOG.ignore(e); |
| } |
| finally |
| { |
| _closedOut=true; |
| } |
| } |
| |
| public void shutdown() |
| { |
| final WebSocket.Connection connection = _connection; |
| if (connection != null) |
| connection.close(CLOSE_SHUTDOWN, null); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void fillBuffersFrom(Buffer buffer) |
| { |
| _parser.fill(buffer); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| private void checkWriteable() |
| { |
| if (!_generator.isBufferEmpty() && _endp instanceof AsyncEndPoint) |
| { |
| ((AsyncEndPoint)_endp).scheduleWrite(); |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public List<Extension> getExtensions() |
| { |
| return Collections.emptyList(); |
| } |
| |
| protected void onFrameHandshake() |
| { |
| if (_onFrame!=null) |
| { |
| _onFrame.onHandshake(_connection); |
| } |
| } |
| |
| protected void onWebSocketOpen() |
| { |
| _webSocket.onOpen(_connection); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| private class FrameConnectionD06 implements WebSocket.FrameConnection |
| { |
| volatile boolean _disconnecting; |
| int _maxTextMessage=WebSocketConnectionD06.this._maxTextMessageSize; |
| int _maxBinaryMessage=WebSocketConnectionD06.this._maxBinaryMessageSize; |
| |
| /* ------------------------------------------------------------ */ |
| public synchronized void sendMessage(String content) throws IOException |
| { |
| if (_closedOut) |
| throw new IOException("closing"); |
| byte[] data = content.getBytes(StringUtil.__UTF8); |
| _generator.addFrame((byte)0x8,WebSocketConnectionD06.OP_TEXT,data,0,data.length); |
| _generator.flush(); |
| checkWriteable(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public synchronized void sendMessage(byte[] content, int offset, int length) throws IOException |
| { |
| if (_closedOut) |
| throw new IOException("closing"); |
| _generator.addFrame((byte)0x8,WebSocketConnectionD06.OP_BINARY,content,offset,length); |
| _generator.flush(); |
| checkWriteable(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void sendFrame(byte flags,byte opcode, byte[] content, int offset, int length) throws IOException |
| { |
| if (_closedOut) |
| throw new IOException("closing"); |
| _generator.addFrame(flags,opcode,content,offset,length); |
| _generator.flush(); |
| checkWriteable(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void sendControl(byte control, byte[] data, int offset, int length) throws IOException |
| { |
| if (_closedOut) |
| throw new IOException("closing"); |
| _generator.addFrame((byte)0x8,control,data,offset,length); |
| _generator.flush(); |
| checkWriteable(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isMessageComplete(byte flags) |
| { |
| return isLastFrame(flags); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isOpen() |
| { |
| return _endp!=null&&_endp.isOpen(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void close(int code, String message) |
| { |
| if (_disconnecting) |
| return; |
| _disconnecting=true; |
| WebSocketConnectionD06.this.closeOut(code,message); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void setMaxIdleTime(int ms) |
| { |
| try |
| { |
| _endp.setMaxIdleTime(ms); |
| } |
| catch(IOException e) |
| { |
| LOG.warn(e); |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void setMaxTextMessageSize(int size) |
| { |
| _maxTextMessage=size; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void setMaxBinaryMessageSize(int size) |
| { |
| _maxBinaryMessage=size; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public int getMaxTextMessageSize() |
| { |
| return _maxTextMessage; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public int getMaxIdleTime() |
| { |
| return _endp.getMaxIdleTime(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public int getMaxBinaryMessageSize() |
| { |
| return _maxBinaryMessage; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public String getProtocol() |
| { |
| return _protocol; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public byte binaryOpcode() |
| { |
| return OP_BINARY; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public byte textOpcode() |
| { |
| return OP_TEXT; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public byte continuationOpcode() |
| { |
| return OP_CONTINUATION; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public byte finMask() |
| { |
| return 0x8; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isControl(byte opcode) |
| { |
| return isControlFrame(opcode); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isText(byte opcode) |
| { |
| return opcode==OP_TEXT; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isBinary(byte opcode) |
| { |
| return opcode==OP_BINARY; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isContinuation(byte opcode) |
| { |
| return opcode==OP_CONTINUATION; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isClose(byte opcode) |
| { |
| return opcode==OP_CLOSE; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isPing(byte opcode) |
| { |
| return opcode==OP_PING; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isPong(byte opcode) |
| { |
| return opcode==OP_PONG; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void disconnect() |
| { |
| close(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void close() |
| { |
| close(CLOSE_NORMAL,null); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| public String toString() |
| { |
| return this.getClass().getSimpleName()+"@"+_endp.getLocalAddr()+":"+_endp.getLocalPort()+"<->"+_endp.getRemoteAddr()+":"+_endp.getRemotePort(); |
| } |
| |
| public void setAllowFrameFragmentation(boolean allowFragmentation) |
| { |
| } |
| |
| public boolean isAllowFrameFragmentation() |
| { |
| return false; |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /* ------------------------------------------------------------ */ |
| /* ------------------------------------------------------------ */ |
| private class FrameHandlerD06 implements WebSocketParser.FrameHandler |
| { |
| private final Utf8StringBuilder _utf8 = new Utf8StringBuilder(); |
| private ByteArrayBuffer _aggregate; |
| private byte _opcode=-1; |
| |
| public void onFrame(byte flags, byte opcode, Buffer buffer) |
| { |
| boolean lastFrame = isLastFrame(flags); |
| |
| synchronized(WebSocketConnectionD06.this) |
| { |
| // Ignore incoming after a close |
| if (_closedIn) |
| return; |
| |
| try |
| { |
| byte[] array=buffer.array(); |
| |
| // Deliver frame if websocket is a FrameWebSocket |
| if (_onFrame!=null) |
| { |
| if (_onFrame.onFrame(flags,opcode,array,buffer.getIndex(),buffer.length())) |
| return; |
| } |
| |
| if (_onControl!=null && isControlFrame(opcode)) |
| { |
| if (_onControl.onControl(opcode,array,buffer.getIndex(),buffer.length())) |
| return; |
| } |
| |
| switch(opcode) |
| { |
| case WebSocketConnectionD06.OP_CONTINUATION: |
| { |
| // If text, append to the message buffer |
| if (_opcode==WebSocketConnectionD06.OP_TEXT && _connection.getMaxTextMessageSize()>=0) |
| { |
| if (_utf8.append(buffer.array(),buffer.getIndex(),buffer.length(),_connection.getMaxTextMessageSize())) |
| { |
| // If this is the last fragment, deliver the text buffer |
| if (lastFrame && _onTextMessage!=null) |
| { |
| _opcode=-1; |
| String msg =_utf8.toString(); |
| _utf8.reset(); |
| _onTextMessage.onMessage(msg); |
| } |
| } |
| else |
| { |
| _connection.close(WebSocketConnectionD06.CLOSE_LARGE,"Text message size > "+_connection.getMaxTextMessageSize()+" chars"); |
| _utf8.reset(); |
| _opcode=-1; |
| } |
| } |
| else if (_opcode>=0 && _connection.getMaxBinaryMessageSize()>=0) |
| { |
| if (_aggregate.space()<_aggregate.length()) |
| { |
| _connection.close(WebSocketConnectionD06.CLOSE_LARGE,"Message size > "+_connection.getMaxBinaryMessageSize()); |
| _aggregate.clear(); |
| _opcode=-1; |
| } |
| else |
| { |
| _aggregate.put(buffer); |
| |
| // If this is the last fragment, deliver |
| if (lastFrame && _onBinaryMessage!=null) |
| { |
| try |
| { |
| _onBinaryMessage.onMessage(_aggregate.array(),_aggregate.getIndex(),_aggregate.length()); |
| } |
| finally |
| { |
| _opcode=-1; |
| _aggregate.clear(); |
| } |
| } |
| } |
| } |
| break; |
| } |
| case WebSocketConnectionD06.OP_PING: |
| { |
| LOG.debug("PING {}",this); |
| if (!_closedOut) |
| _connection.sendControl(WebSocketConnectionD06.OP_PONG,buffer.array(),buffer.getIndex(),buffer.length()); |
| break; |
| } |
| |
| case WebSocketConnectionD06.OP_PONG: |
| { |
| LOG.debug("PONG {}",this); |
| break; |
| } |
| |
| case WebSocketConnectionD06.OP_CLOSE: |
| { |
| int code=-1; |
| String message=null; |
| if (buffer.length()>=2) |
| { |
| code=buffer.array()[buffer.getIndex()]*0xff+buffer.array()[buffer.getIndex()+1]; |
| if (buffer.length()>2) |
| message=new String(buffer.array(),buffer.getIndex()+2,buffer.length()-2,StringUtil.__UTF8); |
| } |
| closeIn(code,message); |
| break; |
| } |
| |
| |
| case WebSocketConnectionD06.OP_TEXT: |
| { |
| if(_onTextMessage!=null) |
| { |
| if (lastFrame) |
| { |
| // Deliver the message |
| _onTextMessage.onMessage(buffer.toString(StringUtil.__UTF8)); |
| } |
| else |
| { |
| if (_connection.getMaxTextMessageSize()>=0) |
| { |
| // If this is a text fragment, append to buffer |
| if (_utf8.append(buffer.array(),buffer.getIndex(),buffer.length(),_connection.getMaxTextMessageSize())) |
| _opcode=WebSocketConnectionD06.OP_TEXT; |
| else |
| { |
| _utf8.reset(); |
| _opcode=-1; |
| _connection.close(WebSocketConnectionD06.CLOSE_LARGE,"Text message size > "+_connection.getMaxTextMessageSize()+" chars"); |
| } |
| } |
| } |
| } |
| break; |
| } |
| |
| default: |
| { |
| if (_onBinaryMessage!=null) |
| { |
| if (lastFrame) |
| { |
| _onBinaryMessage.onMessage(array,buffer.getIndex(),buffer.length()); |
| } |
| else |
| { |
| if (_connection.getMaxBinaryMessageSize()>=0) |
| { |
| if (buffer.length()>_connection.getMaxBinaryMessageSize()) |
| { |
| _connection.close(WebSocketConnectionD06.CLOSE_LARGE,"Message size > "+_connection.getMaxBinaryMessageSize()); |
| if (_aggregate!=null) |
| _aggregate.clear(); |
| _opcode=-1; |
| } |
| else |
| { |
| _opcode=opcode; |
| if (_aggregate==null) |
| _aggregate=new ByteArrayBuffer(_connection.getMaxBinaryMessageSize()); |
| _aggregate.put(buffer); |
| } |
| } |
| } |
| } |
| } |
| } |
| } |
| catch(Throwable th) |
| { |
| LOG.warn(th); |
| } |
| } |
| } |
| |
| public void close(int code,String message) |
| { |
| _connection.close(code,message); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return WebSocketConnectionD06.this.toString()+"FH"; |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public static String hashKey(String key) |
| { |
| try |
| { |
| MessageDigest md = MessageDigest.getInstance("SHA1"); |
| md.update(key.getBytes("UTF-8")); |
| md.update(MAGIC); |
| return new String(B64Code.encode(md.digest())); |
| } |
| catch (Exception e) |
| { |
| throw new RuntimeException(e); |
| } |
| } |
| } |