buffer[serviceBytes.length] = 0; // Null terminator

            // When
            int bytesRead = (int) invokeMethod(response, "readBytesWireFormat", new Class[] { byte[].class, int.class }, buffer, 0);

            // Then
            assertEquals(serviceBytes.length + 1, bytesRead, "Should read service string plus terminator");

Since HTTP requests frequently happen in parallel, connection pooling must be thread-safe.

These are the primary classes involved with establishing, sharing, and terminating connections:

 * **RealConnectionPool** manages reuse of HTTP and HTTP/2 connections for reduced latency. Every OkHttpClient has one, and its lifetime spans the lifetime of the OkHttpClient.

    }

    private UpgradeOptions createDefaultOptions() {
        return TestUtils.createDefaultOptions();
    }

    @Nested
    @DisplayName("Target Model Version Determination")
    class TargetModelVersionTests {

        @Test
        @DisplayName("should use explicit model version when provided")
        void shouldUseExplicitModelVersionWhenProvided() {

        assertEquals('S', (char) type2Bytes[4]);
        assertEquals('S', (char) type2Bytes[5]);
        assertEquals('P', (char) type2Bytes[6]);
        assertEquals(0, type2Bytes[7]); // Null terminator
        assertEquals(2, type2Bytes[8], "Message type should be 2"); // Type 2

        // Verify response status
        verify(mockResponse).setStatus(HttpServletResponse.SC_UNAUTHORIZED);

                assertNotNull(targetInfo);
                // Should only contain server info - but might have different structure than expected
                assertTrue(targetInfo.length >= 4, "Target info should have at least terminator");
                // Check if it contains server info (implementation dependent)
                if (targetInfo.length > 4) {
                    assertEquals(1, Type2Message.readUShort(targetInfo, 0)); // Type 0x0001

        String testString = "Hello World";
        ndrBuffer.enc_ndr_string(testString);

        // Expected length: 4 (actual_count) + 4 (offset) + 4 (max_count) + len*2 (unicode) + 2 (null terminator)
        int expectedLength = 4 + 4 + 4 + (testString.length() * 2) + 2;
        assertEquals(expectedLength, ndrBuffer.getIndex());
        assertEquals(expectedLength, ndrBuffer.getLength());

        assertEquals('S', messageBytes[4]);
        assertEquals('S', messageBytes[5]);
        assertEquals('P', messageBytes[6]);
        assertEquals(0, messageBytes[7]); // Null terminator
    }

    @Test
    @DisplayName("Should include message type indicator")
    void testMessageTypeIndicator() throws Exception {
        // Given
        Type2Message type2 = createMockType2Message();

   *
   * <p>Providing a graph to be traversed for which there is more than one path from the start
   * node(s) to any node may lead to:
   *
   * <ul>
   *   <li>Traversal not terminating (if the graph has cycles)
   *   <li>Nodes being visited multiple times (if multiple paths exist from any start node to any
   *       node reachable from any start node)
   * </ul>
   *

        // Write path string at offset 22
        bb.position(22);
        String expectedPath = "\\\\test";
        bb.put(expectedPath.getBytes(StandardCharsets.UTF_16LE));
        bb.putShort((short) 0); // null terminator

        // Decode
        referral.decode(testBuffer, 0, testBuffer.length);

        // Check
        assertEquals(3, referral.getVersion());
        assertEquals(100, referral.getSize());

        return this.cipherId == CIPHER_AES_128_GCM || this.cipherId == CIPHER_AES_256_GCM;
    }

    private int getKeyLength() {
        // Java 17 switch expression for cipher key length determination
        return switch (this.cipherId) {
        case CIPHER_AES_128_CCM, CIPHER_AES_128_GCM -> 16; // AES-128 ciphers use 16-byte keys