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BackendHandler Class — netty Architecture

Architecture documentation for the BackendHandler class in ProxyServer.java from the netty codebase.

Class java

Entity Profile

Dependency Diagram

graph TD
  e4ce49b7_9836_41c5_4698_f50a4892c4fb["BackendHandler"]
  db43fe47_37b6_43cd_123c_8899d4fb6e75["ProxyServer.java"]
  e4ce49b7_9836_41c5_4698_f50a4892c4fb -->|defined in| db43fe47_37b6_43cd_123c_8899d4fb6e75
  a4ee6e56_0ea3_0bab_f589_97c4f1f0ac3f["BackendHandler()"]
  e4ce49b7_9836_41c5_4698_f50a4892c4fb -->|method| a4ee6e56_0ea3_0bab_f589_97c4f1f0ac3f
  1e95531b_18ac_adde_9b38_01ca2408a9d8["channelRead()"]
  e4ce49b7_9836_41c5_4698_f50a4892c4fb -->|method| 1e95531b_18ac_adde_9b38_01ca2408a9d8
  3fdecf1c_73d5_b31c_d877_d5490aa97763["channelReadComplete()"]
  e4ce49b7_9836_41c5_4698_f50a4892c4fb -->|method| 3fdecf1c_73d5_b31c_d877_d5490aa97763
  1cb76ee2_31fc_b57b_eb87_12d0c86a4a23["channelInactive()"]
  e4ce49b7_9836_41c5_4698_f50a4892c4fb -->|method| 1cb76ee2_31fc_b57b_eb87_12d0c86a4a23
  70de6923_bea6_a1c8_04d7_71fb5575dd8d["exceptionCaught()"]
  e4ce49b7_9836_41c5_4698_f50a4892c4fb -->|method| 70de6923_bea6_a1c8_04d7_71fb5575dd8d

Relationship Graph

Source Code

handler-proxy/src/test/java/io/netty/handler/proxy/ProxyServer.java lines 232–260

        private final class BackendHandler extends ChannelInboundHandlerAdapter {

            private final ChannelHandlerContext frontend;

            BackendHandler(ChannelHandlerContext frontend) {
                this.frontend = frontend;
            }

            @Override
            public void channelRead(ChannelHandlerContext ctx, Object msg) throws Exception {
                frontend.write(msg);
            }

            @Override
            public void channelReadComplete(ChannelHandlerContext ctx) throws Exception {
                frontend.flush();
            }

            @Override
            public void channelInactive(ChannelHandlerContext ctx) throws Exception {
                frontend.close();
            }

            @Override
            public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
                recordException(cause);
                ctx.close();
            }
        }

Defined In

Source

Frequently Asked Questions

What is the BackendHandler class?
BackendHandler is a class in the netty codebase, defined in handler-proxy/src/test/java/io/netty/handler/proxy/ProxyServer.java.
Where is BackendHandler defined?
BackendHandler is defined in handler-proxy/src/test/java/io/netty/handler/proxy/ProxyServer.java at line 232.

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