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OPTIONS rtsp://localhost:8080 RTSP/1.0
CSeq: 2
User-Agent: LibVLC/2.2.4 (LIVE555 Streaming Media v2016.02.22)
And I want to send the following response back
RTSP/1.0 200 OK
CSeq: 2
Public: DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE
What should I use to construct the http response. Should I use HttpResponse or just use a plain byte array and convert it to ByteBuf?
The Netty version I'm using is 4.1.5
Thanks in advance.
The RTSP response of OPTIONS request contains only headers.
Then you can simply create the reponse and fill it using :
FullHttpResponse response = new DefaultFullHttpResponse(RtspVersions.RTSP_1_0, RtspResponseStatuses.OK);
response.headers().add(RtspHeadersNames.PUBLIC, "DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE");
response.headers().add(RtspHeadersNames.CSEQ, cseq);
A simplified implementation of an RTSP server answering to OPTIONS request could be :
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.*;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.socket.SocketChannel;    
import io.netty.handler.codec.http.*;
import io.netty.handler.codec.rtsp.*;
public class RtspServer {
    public static class RtspServerHandler extends ChannelInboundHandlerAdapter {
        @Override
        public void channelReadComplete(ChannelHandlerContext ctx) {
            ctx.flush();
        @Override
        public void channelRead(ChannelHandlerContext ctx, Object msg) {                    
            if (msg instanceof DefaultHttpRequest) {                
                DefaultHttpRequest req = (DefaultHttpRequest) msg;
                FullHttpResponse response = new DefaultFullHttpResponse(RtspVersions.RTSP_1_0, RtspResponseStatuses.OK);
                response.headers().add(RtspHeadersNames.PUBLIC, "DESCRIBE, SETUP, TEARDOWN, PLAY, PAUSE");
                response.headers().add(RtspHeadersNames.CSEQ, req.headers().get("CSEQ"));
                response.headers().set(RtspHeadersNames.CONNECTION, RtspHeadersValues.KEEP_ALIVE);
                ctx.write(response);
    public static void main(String[] args) throws Exception {    
        EventLoopGroup bossGroup = new NioEventLoopGroup();
        EventLoopGroup workerGroup = new NioEventLoopGroup();
        try {
            ServerBootstrap b = new ServerBootstrap();
            b.group(bossGroup, workerGroup);
            b.channel(NioServerSocketChannel.class);            
            b.childHandler(new ChannelInitializer<SocketChannel>() {
                @Override
                public void initChannel(SocketChannel ch) {
                    ChannelPipeline p = ch.pipeline();
                    p.addLast(new RtspDecoder(), new RtspEncoder());
                    p.addLast(new RtspServerHandler());
            Channel ch = b.bind(8554).sync().channel();
            System.err.println("Connect to rtsp://127.0.0.1:8554");
            ch.closeFuture().sync();
        } finally {
            bossGroup.shutdownGracefully();
            workerGroup.shutdownGracefully();
        
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