// Request.kt

import com.pawegio.kandroid.d
import khttp.responses.Response
import khttp.structures.cookie.CookieJar

object Request {

    fun post(url: String, data: Map<String, String>? = null, cookies: CookieJar? = null): Response {
        d("Starting")
        val response = khttp.post(url, data = data, cookies = cookies) //this is where it stuck
        d("Finish")
        return response
    }
}

// Where it call

import android.util.Log
import kotlinx.coroutines.experimental.runBlocking
import some.package.utils.network.Request

object Izone {
    private val LOGIN_URL = //some login url goes here

    fun login(username: String, password: String): Boolean {
        val payload = mapOf(
                "form_action" to "submitted",
                "student_uid" to username,
                "password" to password)
        val response = runBlocking { Request.post(LOGIN_URL, data = payload) } //this is where it stuck
        if (response.statusCode == 200) {
            return true
        } else {
            Log.d("TAG", "${response.statusCode}")
            return false
        }
    }
}