Code Snippet to implement SSL pinning using SHA256 key and CertificatePinner in OKHTTP

OkhttpAndCertificatePinner

// Create CertificatePinner object which contatins list of domains and associated SHA-256 keys. 
// Pin this CertificatePinner object while creating the OKHTTP client.
private val client = OkHttpClient.Builder()
      .certificatePinner(
          CertificatePinner.Builder()
              .add("www.example.com", "sha256/7HIpactkIAq2Y49orFOOQKurWxmmSFZhBCoQYcRhJ3Y=")
              .build())
      .build()
      
// Implement rest service call 
fun run() {
    val request = Request.Builder()
        .url("https://www.example.com/somerequest")
        .build()

    client.newCall(request).execute().use { response ->
      if (response.isSuccessful) {
        println("Success")
      }
    }
  }