org.java_websocket.extensions.DefaultExtension Maven / Gradle / Ivy
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/*
* Copyright (c) 2010-2020 Nathan Rajlich
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*/
package org.java_websocket.extensions;
import org.java_websocket.exceptions.InvalidDataException;
import org.java_websocket.exceptions.InvalidFrameException;
import org.java_websocket.framing.Framedata;
/**
* Class which represents the normal websocket implementation specified by rfc6455.
*
* This is a fallback and will always be available for a Draft_6455
*
* @since 1.3.5
*/
public class DefaultExtension implements IExtension {
@Override
public void decodeFrame(Framedata inputFrame) throws InvalidDataException {
//Nothing to do here
}
@Override
public void encodeFrame(Framedata inputFrame) {
//Nothing to do here
}
@Override
public boolean acceptProvidedExtensionAsServer(String inputExtension) {
return true;
}
@Override
public boolean acceptProvidedExtensionAsClient(String inputExtension) {
return true;
}
@Override
public void isFrameValid(Framedata inputFrame) throws InvalidDataException {
if (inputFrame.isRSV1() || inputFrame.isRSV2() || inputFrame.isRSV3()) {
throw new InvalidFrameException(
"bad rsv RSV1: " + inputFrame.isRSV1() + " RSV2: " + inputFrame.isRSV2() + " RSV3: "
+ inputFrame.isRSV3());
}
}
@Override
public String getProvidedExtensionAsClient() {
return "";
}
@Override
public String getProvidedExtensionAsServer() {
return "";
}
@Override
public IExtension copyInstance() {
return new DefaultExtension();
}
public void reset() {
//Nothing to do here. No internal stats.
}
@Override
public String toString() {
return getClass().getSimpleName();
}
@Override
public int hashCode() {
return getClass().hashCode();
}
@Override
public boolean equals(Object o) {
return this == o || o != null && getClass() == o.getClass();
}
}