com.github.jchanghong.http.okhttp.AsynchronousGet.kt Maven / Gradle / Ivy

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/*
 * Copyright (C) 2014 Square, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.github.jchanghong.http.okhttp

import okhttp3.*
import java.io.IOException

class AsynchronousGet {
    private val client = OkHttpClient()

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

        client.newCall(request).enqueue(object : Callback {
            override fun onFailure(call: Call, e: IOException) {
                e.printStackTrace()
            }

            override fun onResponse(call: Call, response: Response) {
                response.use {
                    if (!response.isSuccessful) throw IOException("Unexpected code $response")

                    for ((name, value) in response.headers) {
                        println("$name: $value")
                    }

                    println(response.body!!.string())
                }
            }
        })
    }
}

fun main() {
    AsynchronousGet().run()
}