channelRead0() — netty Function Reference

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

Function java Buffer Telemetry

Entity Profile

Buffer→ Telemetry→ channelRead0() — netty Function Reference

Dependency Diagram

graph TD
  3b3fccc3_0d32_27af_7fb2_32bfcef88693["channelRead0()"]
  279eefab_81d9_4214_e219_57ef97f6b14c["SpdyServerHandler"]
  3b3fccc3_0d32_27af_7fb2_32bfcef88693 -->|defined in| 279eefab_81d9_4214_e219_57ef97f6b14c
  style 3b3fccc3_0d32_27af_7fb2_32bfcef88693 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

example/src/main/java/io/netty/example/spdy/server/SpdyServerHandler.java lines 47–74

    @Override
    public void channelRead0(ChannelHandlerContext ctx, Object msg) throws Exception {
        if (msg instanceof HttpRequest) {
            HttpRequest req = (HttpRequest) msg;

            if (is100ContinueExpected(req)) {
                ctx.write(new DefaultFullHttpResponse(HTTP_1_1, CONTINUE, Unpooled.EMPTY_BUFFER));
            }
            boolean keepAlive = isKeepAlive(req);

            ByteBuf content = Unpooled.copiedBuffer("Hello World " + new Date(), CharsetUtil.UTF_8);

            FullHttpResponse response = new DefaultFullHttpResponse(HTTP_1_1, OK, content);
            response.headers().set(CONTENT_TYPE, "text/plain; charset=UTF-8");
            response.headers().setInt(CONTENT_LENGTH, response.content().readableBytes());

            if (keepAlive) {
                if (req.protocolVersion().equals(HTTP_1_0)) {
                    response.headers().set(CONNECTION, KEEP_ALIVE);
                }
                ctx.write(response);
            } else {
                // Tell the client we're going to close the connection.
                response.headers().set(CONNECTION, CLOSE);
                ctx.write(response).addListener(ChannelFutureListener.CLOSE);
            }
        }
    }