versions](https://square.github.io/okhttp/4.x/okhttp/okhttp3/-tls-version/) and [cipher suites](https://square.github.io/okhttp/4.x/okhttp/okhttp3/-cipher-suite/) to offer. A client that wants to maximize connectivity would include obsolete TLS versions and weak-by-design cipher suites. A strict client that wants to maximize security would be limited to only the latest TLS version and strongest cipher suites.

Specific security vs. connectivity decisions are implemented by [ConnectionSpe...

                // Combine ciphertext and auth tag for decryption
                final byte[] input = new byte[ciphertext.length + authTag.length];
                System.arraycopy(ciphertext, 0, input, 0, ciphertext.length);
                System.arraycopy(authTag, 0, input, ciphertext.length, authTag.length);

                plaintext = cipher.doFinal(input);
            } else {

@NullUnmarked
public class FilesTest extends IoTestCase {

  @AndroidIncompatible // suites, ByteSourceTester (b/230620681)
  public static TestSuite suite() {
    TestSuite suite = new TestSuite();
    suite.addTest(
        ByteSourceTester.tests(
            "Files.asByteSource[File]", SourceSinkFactories.fileByteSourceFactory(), true));
    suite.addTest(

 * limitations under the License.
 */
package okhttp3

/**
 * [TLS cipher suites][iana_tls_parameters].
 *
 * **Not all cipher suites are supported on all platforms.** As newer cipher suites are created (for
 * stronger privacy, better performance, etc.) they will be adopted by the platform and then exposed
 * here. Cipher suites that are not available on either Android (through API level 24) or Java

   * order for a socket to be compatible the enabled cipher suites and protocols must intersect.
   *
   * For cipher suites, at least one of the [required cipher suites][cipherSuites] must match the
   * socket's enabled cipher suites. If there are no required cipher suites the socket must have at
   * least one cipher suite enabled.
   *

            "A device attached to the system is not functioning.", "Incorrect function.", "The parameter is incorrect.",
            "Invalid access to memory location.", "The handle is invalid.", "The parameter is incorrect.",
            "The system cannot find the file specified.", "The system cannot find the file specified.", "End of file",

     * Update activity timestamp
     */
    public void updateActivity() {
        this.lastActivityTime = System.currentTimeMillis();
    }

    /**
     * Get idle time since last activity
     *
     * @return idle time in milliseconds
     */
    public long getIdleTime() {
        return System.currentTimeMillis() - lastActivityTime;
    }

    /**
     * Check if channel is in healthy state

     */
    public boolean isAuthenticationError() {
        return errorCode.getCategory() == ErrorCategory.AUTHENTICATION;
    }

    /**
     * Check if this is a file system error
     *
     * @return true if file system error
     */
    public boolean isFileSystemError() {
        return errorCode.getCategory() == ErrorCategory.FILE_SYSTEM;
    }

    /**
     * Check if this is a transient error

        when(mockFile1.lastModified()).thenReturn(System.currentTimeMillis() - 3600000);
        when(mockFile1.isDirectory()).thenReturn(false);
        when(mockFile1.getAttributes()).thenReturn(0x20); // FILE_ATTRIBUTE_ARCHIVE
        when(mockFile1.createTime()).thenReturn(System.currentTimeMillis() - 7200000);
        when(mockFile1.lastAccess()).thenReturn(System.currentTimeMillis() - 1800000);

            this.creationTime = System.currentTimeMillis();
            this.allocationStackTrace = Thread.currentThread().getStackTrace();
            this.closed = false;
        }

        boolean isAlive() {
            return resourceRef.get() != null && !closed;
        }

        long getAge() {
            return System.currentTimeMillis() - creationTime;
        }
    }