org.eclipse.jetty.spdy.api.StreamStatus Maven / Gradle / Ivy
//
// ========================================================================
// Copyright (c) 1995-2017 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.spdy.api;
import java.util.HashMap;
import java.util.Map;
/**
* An enumeration of stream statuses.
*/
public enum StreamStatus
{
/**
* The stream status indicating a protocol error
*/
PROTOCOL_ERROR(1, 1),
/**
* The stream status indicating that the stream is not valid
*/
INVALID_STREAM(2, 2),
/**
* The stream status indicating that the stream has been refused
*/
REFUSED_STREAM(3, 3),
/**
* The stream status indicating that the implementation does not support the SPDY version of the stream
*/
UNSUPPORTED_VERSION(4, 4),
/**
* The stream status indicating that the stream is no longer needed
*/
CANCEL_STREAM(5, 5),
/**
* The stream status indicating an implementation error
*/
INTERNAL_ERROR(6, 6),
/**
* The stream status indicating a flow control error
*/
FLOW_CONTROL_ERROR(7, 7),
/**
* The stream status indicating a stream opened more than once
*/
STREAM_IN_USE(-1, 8),
/**
* The stream status indicating data on a stream already closed
*/
STREAM_ALREADY_CLOSED(-1, 9),
/**
* The stream status indicating credentials not valid
*/
INVALID_CREDENTIALS(-1, 10),
/**
* The stream status indicating that the implementation could not support a frame too large
*/
FRAME_TOO_LARGE(-1, 11);
/**
* @param version the SPDY protocol version
* @param code the stream status code
* @return a {@link StreamStatus} from the given version and code,
* or null if no such status exists
*/
public static StreamStatus from(short version, int code)
{
switch (version)
{
case SPDY.V2:
return Codes.v2Codes.get(code);
case SPDY.V3:
return Codes.v3Codes.get(code);
default:
throw new IllegalStateException();
}
}
private final int v2Code;
private final int v3Code;
private StreamStatus(int v2Code, int v3Code)
{
this.v2Code = v2Code;
if (v2Code >= 0)
Codes.v2Codes.put(v2Code, this);
this.v3Code = v3Code;
if (v3Code >= 0)
Codes.v3Codes.put(v3Code, this);
}
/**
* @param version the SPDY protocol version
* @return the stream status code
*/
public int getCode(short version)
{
switch (version)
{
case SPDY.V2:
return v2Code;
case SPDY.V3:
return v3Code;
default:
throw new IllegalStateException();
}
}
private static class Codes
{
private static final Map v2Codes = new HashMap<>();
private static final Map v3Codes = new HashMap<>();
}
}