Class LineEncoder

java.lang.Object
io.netty.channel.ChannelHandlerAdapter
All Implemented Interfaces:
ChannelHandler, ChannelOutboundHandler
@Sharable public class LineEncoder extends MessageToMessageEncoder<CharSequence>
Apply a line separator to the requested String and encode it into a ByteBuf. A typical setup for a text-based line protocol in a TCP/IP socket would be: 
ChannelPipeline pipeline = ...;
// Decoders
pipeline.addLast("frameDecoder", new LineBasedFrameDecoder(80));
pipeline.addLast("stringDecoder", new StringDecoder(CharsetUtil.UTF_8));
// Encoder
pipeline.addLast("lineEncoder", new LineEncoder(LineSeparator.UNIX, CharsetUtil.UTF_8));
and then you can use a String instead of a ByteBuf as a message: 
void channelRead(ChannelHandlerContext ctx, String msg) {
 ch.write("Did you say '" + msg + "'?");
}

  • Constructor Details

    • LineEncoder

      public LineEncoder()
      Creates a new instance with the current system line separator and UTF-8 charset encoding.

    • LineEncoder

      public LineEncoder(LineSeparator lineSeparator)
      Creates a new instance with the specified line separator and UTF-8 charset encoding.

    • LineEncoder

      public LineEncoder(Charset charset)
      Creates a new instance with the specified character set.

    • LineEncoder

      public LineEncoder(LineSeparator lineSeparator, Charset charset)
      Creates a new instance with the specified line separator and character set.

  • Method Details