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udpZeroLengthDatagramCaptured() — netty Function Reference

Architecture documentation for the udpZeroLengthDatagramCaptured() function in PcapWriteHandlerTest.java from the netty codebase.

Function java Buffer Allocators calls 3

Entity Profile

Dependency Diagram

graph TD
  e94a2daf_6334_d8a0_7364_bdcc90c0b5af["udpZeroLengthDatagramCaptured()"]
  e9f4993c_4935_9405_4fab_0bbc9030a673["PcapWriteHandlerTest"]
  e94a2daf_6334_d8a0_7364_bdcc90c0b5af -->|defined in| e9f4993c_4935_9405_4fab_0bbc9030a673
  201e7e9e_c23c_b328_ecb1_117026fc1c03["InetSocketAddress()"]
  e94a2daf_6334_d8a0_7364_bdcc90c0b5af -->|calls| 201e7e9e_c23c_b328_ecb1_117026fc1c03
  5c425ce6_e952_d363_e0ef_0934a41b930a["EmbeddedDatagramChannel()"]
  e94a2daf_6334_d8a0_7364_bdcc90c0b5af -->|calls| 5c425ce6_e952_d363_e0ef_0934a41b930a
  eb1ea467_0963_a158_64e4_4642e02fe449["verifyUdpCapture()"]
  e94a2daf_6334_d8a0_7364_bdcc90c0b5af -->|calls| eb1ea467_0963_a158_64e4_4642e02fe449
  style e94a2daf_6334_d8a0_7364_bdcc90c0b5af fill:#6366f1,stroke:#818cf8,color:#fff

Relationship Graph

Source Code

handler/src/test/java/io/netty/handler/pcap/PcapWriteHandlerTest.java lines 351–387

    @Test
    public void udpZeroLengthDatagramCaptured() {
        final ByteBuf pcapBuffer = Unpooled.buffer();
        final ByteBuf payload = Unpooled.buffer();
        InetSocketAddress serverAddr = new InetSocketAddress("1.1.1.1", 1234);
        InetSocketAddress clientAddr = new InetSocketAddress("2.2.2.2", 3456);
        final DatagramPacket outbound = new DatagramPacket(payload.retainedDuplicate(), serverAddr);
        final DatagramPacket inbound = new DatagramPacket(payload.retainedDuplicate(), clientAddr, serverAddr);
        try {
            // We fake a client
            EmbeddedChannel embeddedChannel = new EmbeddedDatagramChannel(clientAddr, serverAddr);
            embeddedChannel.pipeline().addLast(PcapWriteHandler.builder()
                    .captureZeroByte(true)
                    .build(new ByteBufOutputStream(pcapBuffer)));

            assertTrue(embeddedChannel.writeOutbound(outbound.retainedDuplicate()));
            DatagramPacket read = embeddedChannel.readOutbound();
            assertEquals(outbound.content(), read.content());
            read.release();

            assertTrue(embeddedChannel.writeInbound(inbound.retainedDuplicate()));
            read = embeddedChannel.readInbound();
            assertEquals(inbound.content(), read.content());
            read.release();

            verifyUdpCapture(true, pcapBuffer, payload, serverAddr, clientAddr);

            verifyUdpCapture(false, pcapBuffer, payload, clientAddr, serverAddr);

            assertFalse(embeddedChannel.finishAndReleaseAll());
        } finally {
            pcapBuffer.release();
            payload.release();
            outbound.release();
            inbound.release();
        }
    }

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Defined In

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Source

Frequently Asked Questions

What does udpZeroLengthDatagramCaptured() do?
udpZeroLengthDatagramCaptured() is a function in the netty codebase, defined in handler/src/test/java/io/netty/handler/pcap/PcapWriteHandlerTest.java.
Where is udpZeroLengthDatagramCaptured() defined?
udpZeroLengthDatagramCaptured() is defined in handler/src/test/java/io/netty/handler/pcap/PcapWriteHandlerTest.java at line 351.
What does udpZeroLengthDatagramCaptured() call?
udpZeroLengthDatagramCaptured() calls 3 function(s): EmbeddedDatagramChannel, InetSocketAddress, verifyUdpCapture.

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