实例介绍
【实例简介】
【实例截图】
【核心代码】
package org.java_websocket; import java.net.InetSocketAddress; import java.nio.ByteBuffer; import java.nio.channels.NotYetConnectedException; import org.java_websocket.drafts.Draft; import org.java_websocket.framing.Framedata; import org.java_websocket.framing.Framedata.Opcode; public interface WebSocket { public enum Role { CLIENT, SERVER } public enum READYSTATE { NOT_YET_CONNECTED, CONNECTING, OPEN, CLOSING, CLOSED; } /** * The default port of WebSockets, as defined in the spec. If the nullary * constructor is used, DEFAULT_PORT will be the port the WebSocketServer * is binded to. Note that ports under 1024 usually require root permissions. */ public static final int DEFAULT_PORT = 80; public static final int DEFAULT_WSS_PORT = 443; /** * sends the closing handshake. * may be send in response to an other handshake. */ public void close( int code, String message ); public void close( int code ); /** Convenience function which behaves like close(CloseFrame.NORMAL) */ public void close(); /** * This will close the connection immediately without a proper close handshake. * The code and the message therefore won't be transfered over the wire also they will be forwarded to onClose/onWebsocketClose. **/ public abstract void closeConnection( int code, String message ); /** * Send Text data to the other end. * * @throws IllegalArgumentException * @throws NotYetConnectedException */ public abstract void send( String text ) throws NotYetConnectedException; /** * Send Binary data (plain bytes) to the other end. * * @throws IllegalArgumentException * @throws NotYetConnectedException */ public abstract void send( ByteBuffer bytes ) throws IllegalArgumentException , NotYetConnectedException; public abstract void send( byte[] bytes ) throws IllegalArgumentException , NotYetConnectedException; public abstract void sendFrame( Framedata framedata ); /** * Allows to send continuous/fragmented frames conveniently. <br> * For more into on this frame type see http://tools.ietf.org/html/rfc6455#section-5.4<br> * * If the first frame you send is also the last then it is not a fragmented frame and will received via onMessage instead of onFragmented even though it was send by this method. * * @param op * This is only important for the first frame in the sequence. Opcode.TEXT, Opcode.BINARY are allowed. * @param buffer * The buffer which contains the payload. It may have no bytes remaining. * @param fin * true means the current frame is the last in the sequence. **/ public abstract void sendFragmentedFrame( Opcode op, ByteBuffer buffer, boolean fin ); public abstract boolean hasBufferedData(); /** * @returns never returns null */ public abstract InetSocketAddress getRemoteSocketAddress(); /** * @returns never returns null */ public abstract InetSocketAddress getLocalSocketAddress(); public abstract boolean isConnecting(); public abstract boolean isOpen(); public abstract boolean isClosing(); /** * Returns true when no further frames may be submitted<br> * This happens before the socket connection is closed. */ public abstract boolean isFlushAndClose(); /** Returns whether the close handshake has been completed and the socket is closed. */ public abstract boolean isClosed(); public abstract Draft getDraft(); /** * Retrieve the WebSocket 'readyState'. * This represents the state of the connection. * It returns a numerical value, as per W3C WebSockets specs. * * @return Returns '0 = CONNECTING', '1 = OPEN', '2 = CLOSING' or '3 = CLOSED' */ public abstract READYSTATE getReadyState(); /** * Returns the HTTP Request-URI as defined by http://tools.ietf.org/html/rfc2616#section-5.1.2<br> * If the opening handshake has not yet happened it will return null. **/ public abstract String getResourceDescriptor(); }
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