channelRead0() — netty Function Reference

Architecture documentation for the channelRead0() function in TelnetServerHandler.java from the netty codebase.

Function java Buffer Telemetry

Entity Profile

Buffer→ Telemetry→ channelRead0() — netty Function Reference

Dependency Diagram

graph TD
  d52d2ef4_bfda_64ad_afd6_81e209bad741["channelRead0()"]
  c0c87d15_7147_c286_6c43_c97fe9168b6f["TelnetServerHandler"]
  d52d2ef4_bfda_64ad_afd6_81e209bad741 -->|defined in| c0c87d15_7147_c286_6c43_c97fe9168b6f
  style d52d2ef4_bfda_64ad_afd6_81e209bad741 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

example/src/main/java/io/netty/example/telnet/TelnetServerHandler.java lines 41–64

    @Override
    public void channelRead0(ChannelHandlerContext ctx, String request) throws Exception {
        // Generate and write a response.
        String response;
        boolean close = false;
        if (request.isEmpty()) {
            response = "Please type something.\r\n";
        } else if ("bye".equals(request.toLowerCase())) {
            response = "Have a good day!\r\n";
            close = true;
        } else {
            response = "Did you say '" + request + "'?\r\n";
        }

        // We do not need to write a ChannelBuffer here.
        // We know the encoder inserted at TelnetPipelineFactory will do the conversion.
        ChannelFuture future = ctx.write(response);

        // Close the connection after sending 'Have a good day!'
        // if the client has sent 'bye'.
        if (close) {
            future.addListener(ChannelFutureListener.CLOSE);
        }
    }