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channelRead() — netty Function Reference

Architecture documentation for the channelRead() function in HttpServerExpectContinueHandler.java from the netty codebase.

Function java ProtocolCodecs HTTP

Entity Profile

Dependency Diagram

graph TD
  63218365_8866_2931_4131_02bdfe3bcfb6["channelRead()"]
  dc8fa8a8_909d_5919_73f2_7917c9341dcd["HttpServerExpectContinueHandler"]
  63218365_8866_2931_4131_02bdfe3bcfb6 -->|defined in| dc8fa8a8_909d_5919_73f2_7917c9341dcd
  style 63218365_8866_2931_4131_02bdfe3bcfb6 fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

codec-http/src/main/java/io/netty/handler/codec/http/HttpServerExpectContinueHandler.java lines 75–96

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

            if (HttpUtil.is100ContinueExpected(req)) {
                HttpResponse accept = acceptMessage(req);

                if (accept == null) {
                    // the expectation failed so we refuse the request.
                    HttpResponse rejection = rejectResponse(req);
                    ReferenceCountUtil.release(msg);
                    ctx.writeAndFlush(rejection).addListener(ChannelFutureListener.CLOSE_ON_FAILURE);
                    return;
                }

                ctx.writeAndFlush(accept).addListener(ChannelFutureListener.CLOSE_ON_FAILURE);
                req.headers().remove(HttpHeaderNames.EXPECT);
            }
        }
        super.channelRead(ctx, msg);
    }

Domain

Subdomains

Defined In

Source

Frequently Asked Questions

What does channelRead() do?
channelRead() is a function in the netty codebase, defined in codec-http/src/main/java/io/netty/handler/codec/http/HttpServerExpectContinueHandler.java.
Where is channelRead() defined?
channelRead() is defined in codec-http/src/main/java/io/netty/handler/codec/http/HttpServerExpectContinueHandler.java at line 75.

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