| // |
| // ======================================================================== |
| // 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.Utf8Appendable; |
| 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; |
| |
| |
| /* ------------------------------------------------------------ */ |
| /** |
| * <pre> |
| * 0 1 2 3 |
| * 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 |
| * +-+-+-+-+-------+-+-------------+-------------------------------+ |
| * |F|R|R|R| opcode|M| Payload len | Extended payload length | |
| * |I|S|S|S| (4) |A| (7) | (16/64) | |
| * |N|V|V|V| |S| | (if payload len==126/127) | |
| * | |1|2|3| |K| | | |
| * +-+-+-+-+-------+-+-------------+ - - - - - - - - - - - - - - - + |
| * | Extended payload length continued, if payload len == 127 | |
| * + - - - - - - - - - - - - - - - +-------------------------------+ |
| * | |Masking-key, if MASK set to 1 | |
| * +-------------------------------+-------------------------------+ |
| * | Masking-key (continued) | Payload Data | |
| * +-------------------------------- - - - - - - - - - - - - - - - + |
| * : Payload Data continued ... : |
| * + - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + |
| * | Payload Data continued ... | |
| * +---------------------------------------------------------------+ |
| * </pre> |
| */ |
| public class WebSocketConnectionRFC6455 extends AbstractConnection implements WebSocketConnection |
| { |
| private static final Logger LOG = Log.getLogger(WebSocketConnectionRFC6455.class); |
| |
| final static byte OP_CONTINUATION = 0x00; |
| final static byte OP_TEXT = 0x01; |
| final static byte OP_BINARY = 0x02; |
| final static byte OP_EXT_DATA = 0x03; |
| |
| final static byte OP_CONTROL = 0x08; |
| final static byte OP_CLOSE = 0x08; |
| final static byte OP_PING = 0x09; |
| final static byte OP_PONG = 0x0A; |
| final static byte OP_EXT_CTRL = 0x0B; |
| |
| final static int CLOSE_NORMAL=1000; |
| final static int CLOSE_SHUTDOWN=1001; |
| final static int CLOSE_PROTOCOL=1002; |
| final static int CLOSE_BAD_DATA=1003; |
| final static int CLOSE_UNDEFINED=1004; |
| final static int CLOSE_NO_CODE=1005; |
| final static int CLOSE_NO_CLOSE=1006; |
| final static int CLOSE_BAD_PAYLOAD=1007; |
| final static int CLOSE_POLICY_VIOLATION=1008; |
| final static int CLOSE_MESSAGE_TOO_LARGE=1009; |
| final static int CLOSE_REQUIRED_EXTENSION=1010; |
| final static int CLOSE_SERVER_ERROR=1011; |
| final static int CLOSE_FAILED_TLS_HANDSHAKE=1015; |
| |
| final static int FLAG_FIN=0x8; |
| |
| // Per RFC 6455, section 1.3 - Opening Handshake - this version is "13" |
| final static int VERSION=13; |
| |
| static boolean isLastFrame(byte flags) |
| { |
| return (flags&FLAG_FIN)!=0; |
| } |
| |
| static boolean isControlFrame(byte opcode) |
| { |
| return (opcode&OP_CONTROL)!=0; |
| } |
| |
| private final static byte[] MAGIC; |
| private final List<Extension> _extensions; |
| private final WebSocketParserRFC6455 _parser; |
| private final WebSocketGeneratorRFC6455 _generator; |
| private final WebSocketGenerator _outbound; |
| 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 final int _draft; |
| private final ClassLoader _context; |
| private volatile int _closeCode; |
| private volatile String _closeMessage; |
| private volatile boolean _closedIn; |
| private volatile boolean _closedOut; |
| private int _maxTextMessageSize=-1; |
| 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 WebSocket.FrameConnection _connection = new WSFrameConnection(); |
| |
| |
| /* ------------------------------------------------------------ */ |
| public WebSocketConnectionRFC6455(WebSocket websocket, EndPoint endpoint, WebSocketBuffers buffers, long timestamp, int maxIdleTime, String protocol, List<Extension> extensions,int draft) |
| throws IOException |
| { |
| this(websocket,endpoint,buffers,timestamp,maxIdleTime,protocol,extensions,draft,null); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public WebSocketConnectionRFC6455(WebSocket websocket, EndPoint endpoint, WebSocketBuffers buffers, long timestamp, int maxIdleTime, String protocol, List<Extension> extensions,int draft, MaskGen maskgen) |
| throws IOException |
| { |
| super(endpoint,timestamp); |
| |
| _context=Thread.currentThread().getContextClassLoader(); |
| |
| _draft=draft; |
| _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 WebSocketGeneratorRFC6455(buffers, _endp,maskgen); |
| |
| _extensions=extensions; |
| WebSocketParser.FrameHandler frameHandler = new WSFrameHandler(); |
| if (_extensions!=null) |
| { |
| int e=0; |
| for (Extension extension : _extensions) |
| { |
| extension.bind( |
| _connection, |
| e==extensions.size()-1? frameHandler :extensions.get(e+1), |
| e==0?_generator:extensions.get(e-1)); |
| e++; |
| } |
| } |
| |
| _outbound=(_extensions==null||_extensions.size()==0)?_generator:extensions.get(extensions.size()-1); |
| WebSocketParser.FrameHandler inbound = (_extensions == null || _extensions.size() == 0) ? frameHandler : extensions.get(0); |
| |
| _parser = new WebSocketParserRFC6455(buffers, endpoint, inbound,maskgen==null); |
| |
| _protocol=protocol; |
| |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public WebSocket.Connection getConnection() |
| { |
| return _connection; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public List<Extension> getExtensions() |
| { |
| if (_extensions==null) |
| return Collections.emptyList(); |
| |
| return _extensions; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public Connection handle() throws IOException |
| { |
| Thread current = Thread.currentThread(); |
| ClassLoader oldcontext = current.getContextClassLoader(); |
| current.setContextClassLoader(_context); |
| try |
| { |
| // handle the framing protocol |
| boolean progress=true; |
| |
| while (progress) |
| { |
| int flushed=_generator.flushBuffer(); |
| int filled=_parser.parseNext(); |
| |
| progress = flushed>0 || filled>0; |
| _endp.flush(); |
| |
| if (_endp instanceof AsyncEndPoint && ((AsyncEndPoint)_endp).hasProgressed()) |
| progress=true; |
| } |
| } |
| catch(IOException e) |
| { |
| try |
| { |
| if (_endp.isOpen()) |
| _endp.close(); |
| } |
| catch(IOException e2) |
| { |
| LOG.ignore(e2); |
| } |
| throw e; |
| } |
| finally |
| { |
| current.setContextClassLoader(oldcontext); |
| _parser.returnBuffer(); |
| _generator.returnBuffer(); |
| if (_endp.isOpen()) |
| { |
| if (_closedIn && _closedOut && _outbound.isBufferEmpty()) |
| _endp.close(); |
| else if (_endp.isInputShutdown() && !_closedIn) |
| closeIn(CLOSE_NO_CLOSE,null); |
| else |
| checkWriteable(); |
| } |
| } |
| return this; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void onInputShutdown() throws IOException |
| { |
| if (!_closedIn) |
| _endp.close(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isIdle() |
| { |
| return _parser.isBufferEmpty() && _outbound.isBufferEmpty(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| public void onIdleExpired(long idleForMs) |
| { |
| closeOut(WebSocketConnectionRFC6455.CLOSE_NORMAL,"Idle for "+idleForMs+"ms > "+_endp.getMaxIdleTime()+"ms"); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isSuspended() |
| { |
| return false; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void onClose() |
| { |
| final boolean closed; |
| synchronized (this) |
| { |
| closed=_closeCode==0; |
| if (closed) |
| _closeCode=WebSocketConnectionRFC6455.CLOSE_NO_CLOSE; |
| } |
| if (closed) |
| _webSocket.onClose(WebSocketConnectionRFC6455.CLOSE_NO_CLOSE,"closed"); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void closeIn(int code,String message) |
| { |
| LOG.debug("ClosedIn {} {} {}",this,code,message); |
| |
| final boolean closed_out; |
| final boolean tell_app; |
| synchronized (this) |
| { |
| closed_out=_closedOut; |
| _closedIn=true; |
| tell_app=_closeCode==0; |
| if (tell_app) |
| { |
| _closeCode=code; |
| _closeMessage=message; |
| } |
| } |
| |
| try |
| { |
| if (!closed_out) |
| closeOut(code,message); |
| } |
| finally |
| { |
| if (tell_app) |
| _webSocket.onClose(code,message); |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void closeOut(int code,String message) |
| { |
| LOG.debug("ClosedOut {} {} {}",this,code,message); |
| |
| final boolean closed_out; |
| final boolean tell_app; |
| synchronized (this) |
| { |
| closed_out=_closedOut; |
| _closedOut=true; |
| tell_app=_closeCode==0; |
| if (tell_app) |
| { |
| _closeCode=code; |
| _closeMessage=message; |
| } |
| } |
| |
| try |
| { |
| if (tell_app) |
| _webSocket.onClose(code,message); |
| } |
| finally |
| { |
| try |
| { |
| if (!closed_out) |
| { |
| // Close code 1005/1006/1015 are never to be sent as a status over |
| // a Close control frame. Code<-1 also means no node. |
| |
| if (code < 0 || (code == WebSocketConnectionRFC6455.CLOSE_NO_CODE) || (code == WebSocketConnectionRFC6455.CLOSE_NO_CLOSE) |
| || (code == WebSocketConnectionRFC6455.CLOSE_FAILED_TLS_HANDSHAKE)) |
| { |
| code = -1; |
| } |
| else if (code == 0) |
| { |
| code = WebSocketConnectionRFC6455.CLOSE_NORMAL; |
| } |
| |
| byte[] bytes = ("xx"+(message==null?"":message)).getBytes(StringUtil.__ISO_8859_1); |
| bytes[0]=(byte)(code/0x100); |
| bytes[1]=(byte)(code%0x100); |
| _outbound.addFrame((byte)FLAG_FIN,WebSocketConnectionRFC6455.OP_CLOSE,bytes,0,code>0?bytes.length:0); |
| _outbound.flush(); |
| } |
| } |
| catch(IOException e) |
| { |
| LOG.ignore(e); |
| } |
| } |
| } |
| |
| 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 (!_outbound.isBufferEmpty() && _endp instanceof AsyncEndPoint) |
| { |
| ((AsyncEndPoint)_endp).scheduleWrite(); |
| } |
| } |
| |
| protected void onFrameHandshake() |
| { |
| if (_onFrame != null) |
| { |
| _onFrame.onHandshake(_connection); |
| } |
| } |
| |
| protected void onWebSocketOpen() |
| { |
| _webSocket.onOpen(_connection); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| private class WSFrameConnection implements WebSocket.FrameConnection |
| { |
| private volatile boolean _disconnecting; |
| |
| /* ------------------------------------------------------------ */ |
| public void sendMessage(String content) throws IOException |
| { |
| if (_closedOut) |
| throw new IOException("closedOut "+_closeCode+":"+_closeMessage); |
| byte[] data = content.getBytes(StringUtil.__UTF8); |
| _outbound.addFrame((byte)FLAG_FIN,WebSocketConnectionRFC6455.OP_TEXT,data,0,data.length); |
| checkWriteable(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void sendMessage(byte[] content, int offset, int length) throws IOException |
| { |
| if (_closedOut) |
| throw new IOException("closedOut "+_closeCode+":"+_closeMessage); |
| _outbound.addFrame((byte)FLAG_FIN,WebSocketConnectionRFC6455.OP_BINARY,content,offset,length); |
| checkWriteable(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void sendFrame(byte flags,byte opcode, byte[] content, int offset, int length) throws IOException |
| { |
| if (_closedOut) |
| throw new IOException("closedOut "+_closeCode+":"+_closeMessage); |
| _outbound.addFrame(flags,opcode,content,offset,length); |
| checkWriteable(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void sendControl(byte ctrl, byte[] data, int offset, int length) throws IOException |
| { |
| // TODO: section 5.5 states that control frames MUST never be length > 125 bytes and MUST NOT be fragmented |
| if (_closedOut) |
| throw new IOException("closedOut "+_closeCode+":"+_closeMessage); |
| _outbound.addFrame((byte)FLAG_FIN,ctrl,data,offset,length); |
| 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; |
| WebSocketConnectionRFC6455.this.closeOut(code,message); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void setMaxIdleTime(int ms) |
| { |
| try |
| { |
| _endp.setMaxIdleTime(ms); |
| } |
| catch(IOException e) |
| { |
| LOG.warn(e); |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void setMaxTextMessageSize(int size) |
| { |
| _maxTextMessageSize=size; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void setMaxBinaryMessageSize(int size) |
| { |
| _maxBinaryMessageSize=size; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public int getMaxIdleTime() |
| { |
| return _endp.getMaxIdleTime(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public int getMaxTextMessageSize() |
| { |
| return _maxTextMessageSize; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public int getMaxBinaryMessageSize() |
| { |
| return _maxBinaryMessageSize; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| 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 FLAG_FIN; |
| } |
| |
| /* ------------------------------------------------------------ */ |
| 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(CLOSE_NORMAL,null); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void close() |
| { |
| close(CLOSE_NORMAL,null); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public void setAllowFrameFragmentation(boolean allowFragmentation) |
| { |
| _parser.setFakeFragments(allowFragmentation); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| public boolean isAllowFrameFragmentation() |
| { |
| return _parser.isFakeFragments(); |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| public String toString() |
| { |
| return String.format("%s@%x l(%s:%d)<->r(%s:%d)", |
| getClass().getSimpleName(), |
| hashCode(), |
| _endp.getLocalAddr(), |
| _endp.getLocalPort(), |
| _endp.getRemoteAddr(), |
| _endp.getRemotePort()); |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| /* ------------------------------------------------------------ */ |
| /* ------------------------------------------------------------ */ |
| private class WSFrameHandler implements WebSocketParser.FrameHandler |
| { |
| private static final int MAX_CONTROL_FRAME_PAYLOAD = 125; |
| private final Utf8StringBuilder _utf8 = new Utf8StringBuilder(512); // TODO configure initial capacity |
| private ByteArrayBuffer _aggregate; |
| private byte _opcode=-1; |
| |
| public void onFrame(final byte flags, final byte opcode, final Buffer buffer) |
| { |
| boolean lastFrame = isLastFrame(flags); |
| |
| synchronized(WebSocketConnectionRFC6455.this) |
| { |
| // Ignore incoming after a close |
| if (_closedIn) |
| return; |
| } |
| try |
| { |
| byte[] array=buffer.array(); |
| |
| if (isControlFrame(opcode) && buffer.length()>MAX_CONTROL_FRAME_PAYLOAD) |
| { |
| errorClose(WebSocketConnectionRFC6455.CLOSE_PROTOCOL,"Control frame too large: " + buffer.length() + " > " + MAX_CONTROL_FRAME_PAYLOAD); |
| return; |
| } |
| |
| // TODO: check extensions for RSV bit(s) meanings |
| if ((flags&0x7)!=0) |
| { |
| errorClose(WebSocketConnectionRFC6455.CLOSE_PROTOCOL,"RSV bits set 0x"+Integer.toHexString(flags)); |
| return; |
| } |
| |
| // Ignore all frames after error close |
| if (_closeCode!=0 && _closeCode!=CLOSE_NORMAL && opcode!=OP_CLOSE) |
| { |
| return; |
| } |
| |
| // 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 WebSocketConnectionRFC6455.OP_CONTINUATION: |
| { |
| if (_opcode==-1) |
| { |
| errorClose(WebSocketConnectionRFC6455.CLOSE_PROTOCOL,"Bad Continuation"); |
| return; |
| } |
| |
| // If text, append to the message buffer |
| if (_onTextMessage!=null && _opcode==WebSocketConnectionRFC6455.OP_TEXT) |
| { |
| if (_utf8.append(buffer.array(),buffer.getIndex(),buffer.length(),_connection.getMaxTextMessageSize())) |
| { |
| // If this is the last fragment, deliver the text buffer |
| if (lastFrame) |
| { |
| _opcode=-1; |
| String msg =_utf8.toString(); |
| _utf8.reset(); |
| _onTextMessage.onMessage(msg); |
| } |
| } |
| else |
| textMessageTooLarge(); |
| } |
| |
| if (_opcode>=0 && _connection.getMaxBinaryMessageSize()>=0) |
| { |
| if (_aggregate!=null && checkBinaryMessageSize(_aggregate.length(),buffer.length())) |
| { |
| _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 WebSocketConnectionRFC6455.OP_PING: |
| { |
| LOG.debug("PING {}",this); |
| if (!_closedOut) |
| { |
| _connection.sendControl(WebSocketConnectionRFC6455.OP_PONG,buffer.array(),buffer.getIndex(),buffer.length()); |
| } |
| break; |
| } |
| |
| case WebSocketConnectionRFC6455.OP_PONG: |
| { |
| LOG.debug("PONG {}",this); |
| break; |
| } |
| |
| case WebSocketConnectionRFC6455.OP_CLOSE: |
| { |
| int code=WebSocketConnectionRFC6455.CLOSE_NO_CODE; |
| String message=null; |
| if (buffer.length()>=2) |
| { |
| code=(0xff&buffer.array()[buffer.getIndex()])*0x100+(0xff&buffer.array()[buffer.getIndex()+1]); |
| |
| // Validate close status codes. |
| if (code < WebSocketConnectionRFC6455.CLOSE_NORMAL || |
| code == WebSocketConnectionRFC6455.CLOSE_UNDEFINED || |
| code == WebSocketConnectionRFC6455.CLOSE_NO_CLOSE || |
| code == WebSocketConnectionRFC6455.CLOSE_NO_CODE || |
| ( code > 1011 && code <= 2999 ) || |
| code >= 5000 ) |
| { |
| errorClose(WebSocketConnectionRFC6455.CLOSE_PROTOCOL,"Invalid close code " + code); |
| return; |
| } |
| |
| if (buffer.length()>2) |
| { |
| if(_utf8.append(buffer.array(),buffer.getIndex()+2,buffer.length()-2,_connection.getMaxTextMessageSize())) |
| { |
| message = _utf8.toString(); |
| _utf8.reset(); |
| } |
| } |
| } |
| else if(buffer.length() == 1) |
| { |
| // Invalid length. use status code 1002 (Protocol error) |
| errorClose(WebSocketConnectionRFC6455.CLOSE_PROTOCOL,"Invalid payload length of 1"); |
| return; |
| } |
| closeIn(code,message); |
| break; |
| } |
| |
| case WebSocketConnectionRFC6455.OP_TEXT: |
| { |
| if (_opcode!=-1) |
| { |
| errorClose(WebSocketConnectionRFC6455.CLOSE_PROTOCOL,"Expected Continuation"+Integer.toHexString(opcode)); |
| return; |
| } |
| |
| if(_onTextMessage!=null) |
| { |
| if (_connection.getMaxTextMessageSize()<=0) |
| { |
| // No size limit, so handle only final frames |
| if (lastFrame) |
| _onTextMessage.onMessage(buffer.toString(StringUtil.__UTF8)); |
| else |
| { |
| LOG.warn("Frame discarded. Text aggregation disabled for {}",_endp); |
| errorClose(WebSocketConnectionRFC6455.CLOSE_POLICY_VIOLATION,"Text frame aggregation disabled"); |
| } |
| } |
| // append bytes to message buffer (if they fit) |
| else if (_utf8.append(buffer.array(),buffer.getIndex(),buffer.length(),_connection.getMaxTextMessageSize())) |
| { |
| if (lastFrame) |
| { |
| String msg =_utf8.toString(); |
| _utf8.reset(); |
| _onTextMessage.onMessage(msg); |
| } |
| else |
| { |
| _opcode=WebSocketConnectionRFC6455.OP_TEXT; |
| } |
| } |
| else |
| textMessageTooLarge(); |
| } |
| break; |
| } |
| |
| case WebSocketConnectionRFC6455.OP_BINARY: |
| { |
| if (_opcode!=-1) |
| { |
| errorClose(WebSocketConnectionRFC6455.CLOSE_PROTOCOL,"Expected Continuation"+Integer.toHexString(opcode)); |
| return; |
| } |
| |
| if (_onBinaryMessage!=null && checkBinaryMessageSize(0,buffer.length())) |
| { |
| if (lastFrame) |
| { |
| _onBinaryMessage.onMessage(array,buffer.getIndex(),buffer.length()); |
| } |
| else if (_connection.getMaxBinaryMessageSize()>=0) |
| { |
| _opcode=opcode; |
| // TODO use a growing buffer rather than a fixed one. |
| if (_aggregate==null) |
| _aggregate=new ByteArrayBuffer(_connection.getMaxBinaryMessageSize()); |
| _aggregate.put(buffer); |
| } |
| else |
| { |
| LOG.warn("Frame discarded. Binary aggregation disabed for {}",_endp); |
| errorClose(WebSocketConnectionRFC6455.CLOSE_POLICY_VIOLATION,"Binary frame aggregation disabled"); |
| } |
| } |
| break; |
| } |
| |
| default: |
| errorClose(WebSocketConnectionRFC6455.CLOSE_PROTOCOL,"Bad opcode 0x"+Integer.toHexString(opcode)); |
| break; |
| } |
| } |
| catch(Utf8Appendable.NotUtf8Exception notUtf8) |
| { |
| LOG.warn("NOTUTF8 - {} for {}",notUtf8,_endp, notUtf8); |
| LOG.debug(notUtf8); |
| errorClose(WebSocketConnectionRFC6455.CLOSE_BAD_PAYLOAD,"Invalid UTF-8"); |
| } |
| catch(Throwable e) |
| { |
| LOG.warn("{} for {}",e,_endp, e); |
| LOG.debug(e); |
| errorClose(WebSocketConnectionRFC6455.CLOSE_SERVER_ERROR,"Internal Server Error: "+e); |
| } |
| } |
| |
| private void errorClose(int code, String message) |
| { |
| _connection.close(code,message); |
| |
| // Brutally drop the connection |
| try |
| { |
| _endp.close(); |
| } |
| catch (IOException e) |
| { |
| LOG.warn(e.toString()); |
| LOG.debug(e); |
| } |
| } |
| |
| private boolean checkBinaryMessageSize(int bufferLen, int length) |
| { |
| int max = _connection.getMaxBinaryMessageSize(); |
| if (max>0 && (bufferLen+length)>max) |
| { |
| LOG.warn("Binary message too large > {}B for {}",_connection.getMaxBinaryMessageSize(),_endp); |
| _connection.close(WebSocketConnectionRFC6455.CLOSE_MESSAGE_TOO_LARGE,"Message size > "+_connection.getMaxBinaryMessageSize()); |
| _opcode=-1; |
| if (_aggregate!=null) |
| _aggregate.clear(); |
| return false; |
| } |
| return true; |
| } |
| |
| private void textMessageTooLarge() |
| { |
| LOG.warn("Text message too large > {} chars for {}",_connection.getMaxTextMessageSize(),_endp); |
| _connection.close(WebSocketConnectionRFC6455.CLOSE_MESSAGE_TOO_LARGE,"Text message size > "+_connection.getMaxTextMessageSize()+" chars"); |
| |
| _opcode=-1; |
| _utf8.reset(); |
| } |
| |
| public void close(int code,String message) |
| { |
| if (code!=CLOSE_NORMAL) |
| LOG.warn("Close: "+code+" "+message); |
| _connection.close(code,message); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return WebSocketConnectionRFC6455.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); |
| } |
| } |
| |
| /* ------------------------------------------------------------ */ |
| @Override |
| public String toString() |
| { |
| return String.format("%s p=%s g=%s", getClass().getSimpleName(), _parser, _generator); |
| } |
| } |
