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// ========================================================================
// Copyright 2011-2012 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.protocol;
public final class OpCode
{
/**
* OpCode for a Continuation Frame
*
* @see <a href="https://tools.ietf.org/html/rfc6455#section-11.8">RFC 6455, Section 11.8 (WebSocket Opcode Registry</a>
*/
public static final byte CONTINUATION = (byte)0x00;
/**
* OpCode for a Text Frame
*
* @see <a href="https://tools.ietf.org/html/rfc6455#section-11.8">RFC 6455, Section 11.8 (WebSocket Opcode Registry</a>
*/
public static final byte TEXT = (byte)0x01;
/**
* OpCode for a Binary Frame
*
* @see <a href="https://tools.ietf.org/html/rfc6455#section-11.8">RFC 6455, Section 11.8 (WebSocket Opcode Registry</a>
*/
public static final byte BINARY = (byte)0x02;
/**
* OpCode for a Close Frame
*
* @see <a href="https://tools.ietf.org/html/rfc6455#section-11.8">RFC 6455, Section 11.8 (WebSocket Opcode Registry</a>
*/
public static final byte CLOSE = (byte)0x08;
/**
* OpCode for a Ping Frame
*
* @see <a href="https://tools.ietf.org/html/rfc6455#section-11.8">RFC 6455, Section 11.8 (WebSocket Opcode Registry</a>
*/
public static final byte PING = (byte)0x09;
/**
* OpCode for a Pong Frame
*
* @see <a href="https://tools.ietf.org/html/rfc6455#section-11.8">RFC 6455, Section 11.8 (WebSocket Opcode Registry</a>
*/
public static final byte PONG = (byte)0x0A;
/**
* An undefined OpCode
*/
public static final byte UNDEFINED = (byte)-1;
public static boolean isControlFrame(byte opcode)
{
return (opcode >= CLOSE);
}
public static boolean isDataFrame(byte opcode)
{
return (opcode == TEXT) || (opcode == BINARY);
}
/**
* Test for known opcodes (per the RFC spec)
*
* @param opcode
* the opcode to test
* @return true if known. false if unknown, undefined, or reserved
*/
public static boolean isKnown(byte opcode)
{
return (opcode == CONTINUATION) || (opcode == TEXT) || (opcode == BINARY) || (opcode == CLOSE) || (opcode == PING) || (opcode == PONG);
}
public static String name(byte opcode)
{
switch (opcode)
{
case -1:
return "NO-OP";
case CONTINUATION:
return "CONTINUATION";
case TEXT:
return "TEXT";
case BINARY: return "BINARY";
case CLOSE:
return "CLOSE";
case PING:
return "PING";
case PONG:
return "PONG";
default:
return "NON-SPEC[" + opcode + "]";
}
}
}
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