```kotlin
implementation("com.squareup.okhttp3:okhttp:5.3.0")
```

Snapshot builds are [available][snap]. [R8 and ProGuard][r8_proguard] rules are available.

Also, we have a [bill of materials (BOM)][bom] available to help you keep OkHttp artifacts up to date and be sure about version compatibility.

```kotlin
    dependencies {
       // define a BOM and its version

// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
// ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE

    }

    /**
     * Creates a Type-1 message using the given raw Type-1 material.
     *
     * @param material The raw Type-1 material used to construct this message.
     * @throws IOException If an error occurs while parsing the material.
     */
    public Type1Message(final byte[] material) throws IOException {
        parse(material);
    }

    /**
     * Returns the supplied authentication domain.
     *

=== ":material-language-kotlin: Kotlin"
    ```kotlin
      private val client = OkHttpClient()

      fun run() {
        val request = Request.Builder()
            .url("https://publicobject.com/helloworld.txt")

    /**
     * Creates a Type-2 message using the given raw Type-2 material.
     *
     * @param material
     *            The raw Type-2 material used to construct this message.
     * @throws IOException
     *             If an error occurs while parsing the material.
     */
    public Type2Message(final byte[] material) throws IOException {
        parse(material);
    }

    /**

        final int lmResponseOffset = readULong(material, 16);
        final byte[] ntResponse = readSecurityBuffer(material, 20);
        final int ntResponseOffset = readULong(material, 24);
        final byte[] domain = readSecurityBuffer(material, 28);
        final int domainOffset = readULong(material, 32);
        final byte[] user = readSecurityBuffer(material, 36);

    }

    /**
     * Creates a Type-2 message using the given raw Type-2 material.
     *
     * @param material The raw Type-2 material used to construct this message.
     * @throws IOException If an error occurs while parsing the material.
     */
    public Type2Message(final byte[] material) throws IOException {
        parse(material);
    }

    /**
     * Returns the challenge for this message.
     *

    /**
     * Creates a Type-3 message using the given raw Type-3 material.
     *
     * @param material
     *            The raw Type-3 material used to construct this message.
     * @throws IOException
     *             If an error occurs while parsing the material.
     */
    public Type3Message(final byte[] material) throws IOException {
        parse(material);
    }

    /**

    /**
     * Creates a Type-1 message using the given raw Type-1 material.
     *
     * @param material
     *            The raw Type-1 material used to construct this message.
     * @throws IOException
     *             If an error occurs while parsing the material.
     */
    public Type1Message(final byte[] material) throws IOException {
        parse(material);
    }

    /**

   * future-proof algorithms <a
   * href="https://datatracker.ietf.org/doc/html/rfc6151#section-2.3">over {@code hmacMd5}</a>.
   *
   * @param key the key material of the secret key
   * @since 20.0
   */
  public static HashFunction hmacMd5(byte[] key) {
    return hmacMd5(new SecretKeySpec(checkNotNull(key), "HmacMD5"));
  }

  /**