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channelRead0() — netty Function Reference

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

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Entity Profile

Dependency Diagram

graph TD
  45865a5f_ca2e_a5fe_d32a_8c87627889ba["channelRead0()"]
  c0846785_201f_c2a0_0a21_3b7cd7542904["HttpSnoopClientHandler"]
  45865a5f_ca2e_a5fe_d32a_8c87627889ba -->|defined in| c0846785_201f_c2a0_0a21_3b7cd7542904
  style 45865a5f_ca2e_a5fe_d32a_8c87627889ba fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

example/src/main/java/io/netty/example/http/snoop/HttpSnoopClientHandler.java lines 29–64

    @Override
    public void channelRead0(ChannelHandlerContext ctx, HttpObject msg) {
        if (msg instanceof HttpResponse) {
            HttpResponse response = (HttpResponse) msg;

            System.err.println("STATUS: " + response.status());
            System.err.println("VERSION: " + response.protocolVersion());
            System.err.println();

            if (!response.headers().isEmpty()) {
                for (CharSequence name: response.headers().names()) {
                    for (CharSequence value: response.headers().getAll(name)) {
                        System.err.println("HEADER: " + name + " = " + value);
                    }
                }
                System.err.println();
            }

            if (HttpUtil.isTransferEncodingChunked(response)) {
                System.err.println("CHUNKED CONTENT {");
            } else {
                System.err.println("CONTENT {");
            }
        }
        if (msg instanceof HttpContent) {
            HttpContent content = (HttpContent) msg;

            System.err.print(content.content().toString(CharsetUtil.UTF_8));
            System.err.flush();

            if (content instanceof LastHttpContent) {
                System.err.println("} END OF CONTENT");
                ctx.close();
            }
        }
    }

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Frequently Asked Questions

What does channelRead0() do?
channelRead0() is a function in the netty codebase, defined in example/src/main/java/io/netty/example/http/snoop/HttpSnoopClientHandler.java.
Where is channelRead0() defined?
channelRead0() is defined in example/src/main/java/io/netty/example/http/snoop/HttpSnoopClientHandler.java at line 29.

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