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*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
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* See the License for the specific language governing permissions and
* limitations under the License.
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package io.undertow.websockets.core;
import io.undertow.util.AttachmentKey;
Enum which list all the different versions of the WebSocket specification (to the current date).
A specification is tied to one wire protocol version but a protocol version may have use by more than 1 version of
the specification.
Author: Norman Maurer
/**
* <p>
* Enum which list all the different versions of the WebSocket specification (to the current date).
* </p>
* <p>
* A specification is tied to one wire protocol version but a protocol version may have use by more than 1 version of
* the specification.
* </p>
*
* @author <a href="mailto:nmaurer@redhat.com">Norman Maurer</a>
*/
public enum WebSocketVersion {
Unknown version of the protocol
/**
* Unknown version of the protocol
*/
UNKNOWN,
/**
* <a href= "http://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-00"
* >draft-ietf-hybi-thewebsocketprotocol- 00</a>.
*/
V00,
/**
* <a href= "http://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-10"
* >draft-ietf-hybi-thewebsocketprotocol- 07</a>
*/
V07,
/**
* <a href= "http://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-10"
* >draft-ietf-hybi-thewebsocketprotocol- 10</a>
*/
V08,
RFC 6455. This was originally draft-ietf-hybi-thewebsocketprotocol-
17
/**
* <a href="http://tools.ietf.org/html/rfc6455">RFC 6455</a>. This was originally <a href=
* "http://tools.ietf.org/html/draft-ietf-hybi-thewebsocketprotocol-17" >draft-ietf-hybi-thewebsocketprotocol-
* 17</a>
*/
V13;
Returns a String representation of the WebSocketVersion that can be used in the HTTP Headers. /**
* Returns a {@link String} representation of the {@link WebSocketVersion} that can be used in the HTTP Headers.
*/
public String toHttpHeaderValue() {
if (this == V00) {
return "0";
}
if (this == V07) {
return "7";
}
if (this == V08) {
return "8";
}
if (this == V13) {
return "13";
}
// Should never hit here.
throw new IllegalStateException("Unknown WebSocket version: " + this);
}
public static final AttachmentKey<WebSocketVersion> ATTACHMENT_KEY = AttachmentKey.create(WebSocketVersion.class);
}