To ensure that you don't return more data than you should, read the docs for [Tutorial - Response Model - Return Type](../tutorial/response-model.md){.internal-link target=_blank}.

## Documentation Tags - OpenAPI { #documentation-tags-openapi }

        // Allocate buffer for read data
        ByteBuffer readBuffer = bufferManager.allocateBuffer(request.getLength());
        RdmaMemoryRegion readRegion = provider.registerMemory(readBuffer, 
            EnumSet.of(RdmaAccess.LOCAL_WRITE, RdmaAccess.REMOTE_WRITE));
        
        try {
            // Create SMB2 Read request with RDMA read channel info

    HashingInputStream in = new HashingInputStream(Hashing.md5(), buffer);

    byte[] buf = new byte[100];
    int numOfByteRead = in.read(buf, 0, buf.length);
    assertEquals(-1, in.read()); // additional read
    assertEquals(4, numOfByteRead);

    assertEquals(expectedHash, in.hash());
  }

  public void testHash_hashesCorrectlyForSkipping() throws Exception {

    HashingInputStream in = new HashingInputStream(Hashing.md5(), buffer);

    byte[] buf = new byte[100];
    int numOfByteRead = in.read(buf, 0, buf.length);
    assertEquals(-1, in.read()); // additional read
    assertEquals(4, numOfByteRead);

    assertEquals(expectedHash, in.hash());
  }

  public void testHash_hashesCorrectlyForSkipping() throws Exception {

    assertThat(inputStream!!.read()).isEqualTo('A'.code)
    assertThat(inputStream.read()).isEqualTo('B'.code)
    assertThat(inputStream.read()).isEqualTo('C'.code)
    assertThat(inputStream.read()).isEqualTo('D'.code)
    assertThat(inputStream.read()).isEqualTo('E'.code)
    assertThat(inputStream.read()).isEqualTo('F'.code)
    assertThat(inputStream.read()).isEqualTo(-1)

        // Test with zero
        buffer.putInt(0, 0);
        assertEquals(0, NtlmMessage.readULong(data, 0), "Should read zero ULong correctly.");

        // Test with max int value (unsigned interpretation)
        buffer.putInt(0, 0xFFFFFFFF);
        assertEquals(0xFFFFFFFF, NtlmMessage.readULong(data, 0), "Should read max ULong correctly.");

            byte[] buf = new byte[16];

            // Skip advances internal file pointer; next read should use this offset
            in.skip(2);

            // Act
            int n = in.readDirect(buf, 0, 5);

            // Assert
            assertEquals(3, n, "Should report bytes read from SMB2 response");

            // Verify the request offset equals the skip value (2)

import jcifs.internal.util.SMBUtil;
import jcifs.smb.NtStatus;

/**
 * SMB2 Read response message.
 *
 * This response contains the data that was read from the file
 * along with information about the read operation.
 *
 * @author mbechler
 */
public class Smb2ReadResponse extends ServerMessageBlock2Response {

    /**
     * Protocol overhead size for SMB2 read response
     */

            else -> source.read(sink, limit)
          }
        }
      }

      override fun timeout(): Timeout = timeout
    }

    /**
     * Returns a value in [0..maxByteCount] with the number of bytes that can be read from [source]
     * in the current part. If this returns 0 the current part is exhausted; otherwise it has at
     * least one byte left to read.
     */

      @Throws(IOException::class)
      override fun read(
        sink: Buffer,
        byteCount: Long,
      ): Long {
        val buffer = Buffer()
        val read = delegate.read(buffer, byteCount)
        if (read != -1L) {
          sink.write(buffer.readByteString().toAsciiUppercase())
        }
        return read
      }
    }
  }