channelActive() — netty Function Reference

Source Code

codec-http3/src/main/java/io/netty/handler/codec/http3/Http3ControlStreamOutboundHandler.java lines 54–74

    @Override
    public void channelActive(ChannelHandlerContext ctx) {
        // We need to write 0x00 into the stream before doing anything else.
        // See https://tools.ietf.org/html/draft-ietf-quic-http-32#section-6.2.1
        // Just allocate 8 bytes which would be the max needed.
        ByteBuf buffer = ctx.alloc().buffer(8);
        Http3CodecUtils.writeVariableLengthInteger(buffer, Http3CodecUtils.HTTP3_CONTROL_STREAM_TYPE);
        ctx.write(buffer);
        // Add the encoder and decoder in the pipeline so we can handle Http3Frames. This needs to happen after
        // we did write the type via a ByteBuf.
        ctx.pipeline().addFirst(codec);

        assert localSettings != null;
        // If writing of the local settings fails let's just teardown the connection.
        closeOnFailure(ctx.writeAndFlush(localSettings));

        // Let the GC collect localSettings.
        localSettings = null;

        ctx.fireChannelActive();
    }