io.undertow.protocols.http2.Http2PingParser Maven / Gradle / Ivy
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* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* 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
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.undertow.protocols.http2;
import io.undertow.UndertowMessages;
import static io.undertow.protocols.http2.Http2Channel.PING_FRAME_LENGTH;
import java.io.IOException;
import java.nio.ByteBuffer;
/**
* Parser for HTTP2 ping frames.
*
* @author Stuart Douglas
*/
class Http2PingParser extends Http2PushBackParser {
final byte[] data = new byte[PING_FRAME_LENGTH];
Http2PingParser(int frameLength) {
super(frameLength);
}
@Override
protected void handleData(ByteBuffer resource, Http2FrameHeaderParser parser) throws IOException {
if(parser.length != PING_FRAME_LENGTH) {
throw new IOException(UndertowMessages.MESSAGES.httpPingDataMustBeLength8());
}
if(parser.streamId != 0) {
throw new IOException(UndertowMessages.MESSAGES.streamIdMustBeZeroForFrameType(Http2Channel.FRAME_TYPE_PING));
}
if (resource.remaining() < PING_FRAME_LENGTH) {
return;
}
resource.get(data);
}
byte[] getData() {
return data;
}
}