CertificatePinning.kt

import okhttp3.CertificatePinner
import okhttp3.OkHttpClient
import okhttp3.Request
import java.io.IOException

class CertificatePinning(dmoain: String){
    private val client: OkHttpClient = OkHttpClient.Builder()
            .certificatePinner(
                    CertificatePinner.Builder()
                            .add(dmoain, "sha256/AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA=")
                            .build())
            .build()


    @Throws(Exception::class)
    fun myCert(url : String) {
        val request = Request.Builder()
                .url(url)
                .build()

        client.newCall(request)?.execute().use { response ->
            response?.let {res ->
                if (!res.isSuccessful) throw IOException("Unexpected code $res")

                for (certificate in res.handshake().peerCertificates()) {
                    System.out.println(CertificatePinner.pin(certificate))
                }
            }

        }
    }
}