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testCustomHandshake() — netty Function Reference

Architecture documentation for the testCustomHandshake() function in PerMessageDeflateServerExtensionHandshakerTest.java from the netty codebase.

Function java Buffer Allocators

Entity Profile

Dependency Diagram

graph TD
  a28a9786_043e_454d_5804_0c2deae5d483["testCustomHandshake()"]
  7f670299_1326_6445_834b_912c2028d4ba["PerMessageDeflateServerExtensionHandshakerTest"]
  a28a9786_043e_454d_5804_0c2deae5d483 -->|defined in| 7f670299_1326_6445_834b_912c2028d4ba
  style a28a9786_043e_454d_5804_0c2deae5d483 fill:#6366f1,stroke:#818cf8,color:#fff

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Source Code

codec-http/src/test/java/io/netty/handler/codec/http/websocketx/extensions/compression/PerMessageDeflateServerExtensionHandshakerTest.java lines 97–175

    @Test
    public void testCustomHandshake() {
        WebSocketServerExtension extension;
        Map<String, String> parameters;
        WebSocketExtensionData data;

        // initialize
        PerMessageDeflateServerExtensionHandshaker handshaker =
                new PerMessageDeflateServerExtensionHandshaker(6, true, 10, true, true, 0);

        parameters = new HashMap<String, String>();
        parameters.put(CLIENT_MAX_WINDOW, null);
        parameters.put(SERVER_MAX_WINDOW, "12");
        parameters.put(CLIENT_NO_CONTEXT, null);
        parameters.put(SERVER_NO_CONTEXT, null);

        // execute
        extension = handshaker.handshakeExtension(
                new WebSocketExtensionData(PERMESSAGE_DEFLATE_EXTENSION, parameters));

        // test
        assertNotNull(extension);
        assertEquals(WebSocketServerExtension.RSV1, extension.rsv());
        assertTrue(extension.newExtensionDecoder() instanceof PerMessageDeflateDecoder);
        assertTrue(extension.newExtensionEncoder() instanceof PerMessageDeflateEncoder);

        // execute
        data = extension.newReponseData();

        // test
        assertEquals(PERMESSAGE_DEFLATE_EXTENSION, data.name());
        assertTrue(data.parameters().containsKey(CLIENT_MAX_WINDOW));
        assertEquals("10", data.parameters().get(CLIENT_MAX_WINDOW));
        assertTrue(data.parameters().containsKey(SERVER_MAX_WINDOW));
        assertEquals("12", data.parameters().get(SERVER_MAX_WINDOW));
        assertTrue(data.parameters().containsKey(CLIENT_MAX_WINDOW));
        assertTrue(data.parameters().containsKey(SERVER_MAX_WINDOW));

        // initialize
        parameters = new HashMap<String, String>();
        parameters.put(SERVER_MAX_WINDOW, "12");
        parameters.put(SERVER_NO_CONTEXT, null);

        // execute
        extension = handshaker.handshakeExtension(
                new WebSocketExtensionData(PERMESSAGE_DEFLATE_EXTENSION, parameters));

        // test
        assertNotNull(extension);
        assertEquals(WebSocketServerExtension.RSV1, extension.rsv());
        assertTrue(extension.newExtensionDecoder() instanceof PerMessageDeflateDecoder);
        assertTrue(extension.newExtensionEncoder() instanceof PerMessageDeflateEncoder);

        // execute
        data = extension.newReponseData();

        // test
        assertEquals(PERMESSAGE_DEFLATE_EXTENSION, data.name());
        assertEquals(2, data.parameters().size());
        assertTrue(data.parameters().containsKey(SERVER_MAX_WINDOW));
        assertEquals("12", data.parameters().get(SERVER_MAX_WINDOW));
        assertTrue(data.parameters().containsKey(SERVER_NO_CONTEXT));

        // initialize
        parameters = new HashMap<String, String>();

        // execute
        extension = handshaker.handshakeExtension(
                new WebSocketExtensionData(PERMESSAGE_DEFLATE_EXTENSION, parameters));
        // test
        assertNotNull(extension);

        // execute
        data = extension.newReponseData();

        // test
        assertEquals(PERMESSAGE_DEFLATE_EXTENSION, data.name());
        assertTrue(data.parameters().isEmpty());
    }

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Frequently Asked Questions

What does testCustomHandshake() do?
testCustomHandshake() is a function in the netty codebase, defined in codec-http/src/test/java/io/netty/handler/codec/http/websocketx/extensions/compression/PerMessageDeflateServerExtensionHandshakerTest.java.
Where is testCustomHandshake() defined?
testCustomHandshake() is defined in codec-http/src/test/java/io/netty/handler/codec/http/websocketx/extensions/compression/PerMessageDeflateServerExtensionHandshakerTest.java at line 97.

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