io.netty.handler.codec.rtsp.RtspEncoder Maven / Gradle / Ivy
/*
* Copyright 2015 The Netty Project
*
* The Netty Project licenses this file to you 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.netty.handler.codec.rtsp;
import static io.netty.handler.codec.http.HttpConstants.CR;
import static io.netty.handler.codec.http.HttpConstants.LF;
import static io.netty.handler.codec.http.HttpConstants.SP;
import io.netty.buffer.ByteBuf;
import io.netty.handler.codec.UnsupportedMessageTypeException;
import io.netty.handler.codec.http.HttpContent;
import io.netty.handler.codec.http.HttpHeaders;
import io.netty.handler.codec.http.HttpMessage;
import io.netty.handler.codec.http.HttpObjectEncoder;
import io.netty.handler.codec.http.HttpRequest;
import io.netty.handler.codec.http.HttpResponse;
import io.netty.util.CharsetUtil;
import io.netty.util.internal.StringUtil;
/**
* Encodes an RTSP message represented in {@link HttpMessage} or an {@link HttpContent} into
* a {@link ByteBuf}.
*/
public class RtspEncoder extends HttpObjectEncoder {
/**
* Constant for CRLF.
*/
private static final byte[] CRLF = {CR, LF};
@Override
public boolean acceptOutboundMessage(final Object msg)
throws Exception {
return super.acceptOutboundMessage(msg) && ((msg instanceof HttpRequest) || (msg instanceof HttpResponse));
}
@Override
protected void encodeInitialLine(final ByteBuf buf, final HttpMessage message)
throws Exception {
if (message instanceof HttpRequest) {
HttpRequest request = (HttpRequest) message;
HttpHeaders.encodeAscii(request.getMethod().toString(), buf);
buf.writeByte(SP);
buf.writeBytes(request.getUri().getBytes(CharsetUtil.UTF_8));
buf.writeByte(SP);
HttpHeaders.encodeAscii(request.getProtocolVersion().toString(), buf);
buf.writeBytes(CRLF);
} else if (message instanceof HttpResponse) {
HttpResponse response = (HttpResponse) message;
HttpHeaders.encodeAscii(response.getProtocolVersion().toString(),
buf);
buf.writeByte(SP);
buf.writeBytes(String.valueOf(response.getStatus().code())
.getBytes(CharsetUtil.US_ASCII));
buf.writeByte(SP);
HttpHeaders.encodeAscii(String.valueOf(response.getStatus().reasonPhrase()),
buf);
buf.writeBytes(CRLF);
} else {
throw new UnsupportedMessageTypeException("Unsupported type "
+ StringUtil.simpleClassName(message));
}
}
}