Android okhttp3で非同期すると落ちる

Question

前提・実現したいこと

Android studio(Kotlin)でAPIを使ったSqlServer間のデータの受け渡しをするシステムを作っているのですが、
非同期でHTTP GETをするときにアプリごと落ちてしまします。
何がおかしいのか、原因と解決策を教えてください

発生している問題・エラーメッセージ

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.cpey, PID: 15149
    java.lang.SecurityException: Permission denied (missing INTERNET permission?)
        at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:150)
        at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:103)
        at java.net.InetAddress.getAllByName(InetAddress.java:1152)
        at okhttp3.Dns$Companion$DnsSystem.lookup(Dns.kt:49)
        at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.kt:164)
        at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.kt:129)
        at okhttp3.internal.connection.RouteSelector.next(RouteSelector.kt:71)
        at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.kt:197)
        at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.kt:107)
        at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.kt:75)
        at okhttp3.internal.connection.RealCall.initExchange$okhttp(RealCall.kt:245)
        at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.kt:32)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:100)
        at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.kt:82)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:100)
        at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.kt:83)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:100)
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:74)
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:100)
        at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:197)
        at okhttp3.internal.connection.RealCall.execute(RealCall.kt:148)
        at com.example.cpey.HttpUtil.httpGet(HttpUtil.kt:17)
        at com.example.cpey.MainActivity$onParallelGetButtonClick$1$1.invokeSuspend(MainActivity.kt:35)
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33)
        at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:56)
        at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571)
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:738)
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678)
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665)
     Caused by: android.system.GaiException: android_getaddrinfo failed: EAI_NODATA (No address associated with hostname)
        at libcore.io.Linux.android_getaddrinfo(Native Method)
        at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:74)
        at libcore.io.BlockGuardOs.android_getaddrinfo(BlockGuardOs.java:200)
        at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:74)
        at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:135)
        at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:103) 
        at java.net.InetAddress.getAllByName(InetAddress.java:1152) 
        at okhttp3.Dns$Companion$DnsSystem.lookup(Dns.kt:49) 
        at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.kt:164) 
        at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.kt:129) 
        at okhttp3.internal.connection.RouteSelector.next(RouteSelector.kt:71) 
        at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.kt:197) 
        at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.kt:107) 
        at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.kt:75) 
        at okhttp3.internal.connection.RealCall.initExchange$okhttp(RealCall.kt:245) 
        at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.kt:32) 
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:100) 
        at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.kt:82) 
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:100) 
        at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.kt:83) 
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:100) 
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:74) 
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:100) 
        at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:197) 
        at okhttp3.internal.connection.RealCall.execute(RealCall.kt:148) 
        at com.example.cpey.HttpUtil.httpGet(HttpUtil.kt:17) 
        at com.example.cpey.MainActivity$onParallelGetButtonClick$1$1.invokeSuspend(MainActivity.kt:35) 
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) 
        at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:56) 
        at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571) 
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:738) 
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678) 
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665) 
     Caused by: android.system.ErrnoException: android_getaddrinfo failed: EPERM (Operation not permitted)
        at libcore.io.Linux.android_getaddrinfo(Native Method) 
        at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:74) 
        at libcore.io.BlockGuardOs.android_getaddrinfo(BlockGuardOs.java:200) 
        at libcore.io.ForwardingOs.android_getaddrinfo(ForwardingOs.java:74) 
        at java.net.Inet6AddressImpl.lookupHostByName(Inet6AddressImpl.java:135) 
        at java.net.Inet6AddressImpl.lookupAllHostAddr(Inet6AddressImpl.java:103) 
        at java.net.InetAddress.getAllByName(InetAddress.java:1152) 
        at okhttp3.Dns$Companion$DnsSystem.lookup(Dns.kt:49) 
        at okhttp3.internal.connection.RouteSelector.resetNextInetSocketAddress(RouteSelector.kt:164) 
        at okhttp3.internal.connection.RouteSelector.nextProxy(RouteSelector.kt:129) 
        at okhttp3.internal.connection.RouteSelector.next(RouteSelector.kt:71) 
        at okhttp3.internal.connection.ExchangeFinder.findConnection(ExchangeFinder.kt:197) 
        at okhttp3.internal.connection.ExchangeFinder.findHealthyConnection(ExchangeFinder.kt:107) 
        at okhttp3.internal.connection.ExchangeFinder.find(ExchangeFinder.kt:75) 
        at okhttp3.internal.connection.RealCall.initExchange$okhttp(RealCall.kt:245) 
        at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.kt:32) 
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:100) 
        at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.kt:82) 
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:100) 
        at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.kt:83) 
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:100) 
        at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.kt:74) 
        at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.kt:100) 
        at okhttp3.internal.connection.RealCall.getResponseWithInterceptorChain$okhttp(RealCall.kt:197) 
        at okhttp3.internal.connection.RealCall.execute(RealCall.kt:148) 
        at com.example.cpey.HttpUtil.httpGet(HttpUtil.kt:17) 
        at com.example.cpey.MainActivity$onParallelGetButtonClick$1$1.invokeSuspend(MainActivity.kt:35) 
        at kotlin.coroutines.jvm.internal.BaseContinuationImpl.resumeWith(ContinuationImpl.kt:33) 
        at kotlinx.coroutines.DispatchedTask.run(DispatchedTask.kt:56) 
        at kotlinx.coroutines.scheduling.CoroutineScheduler.runSafely(CoroutineScheduler.kt:571) 
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.executeTask(CoroutineScheduler.kt:738) 
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.runWorker(CoroutineScheduler.kt:678) 
        at kotlinx.coroutines.scheduling.CoroutineScheduler$Worker.run(CoroutineScheduler.kt:665) 
I/Process: Sending signal. PID: 15149 SIG: 9

該当のソースコード

fun onParallelGetButtonClick() = GlobalScope.launch(Dispatchers.Main) {
    try{
    val http = HttpUtil()
    async(Dispatchers.Default) { http.httpGet(URL) }.await().let {
        val result = Json.parse(it).asObject()
        val textView = findViewById(R.id.text) as TextView
        textView.setText(result.get("description").asObject().get("text").asString())
    }
    }catch(e:IOException){
        e.printStackTrace()
    }
}

object HttpClient {
    val instance = OkHttpClient()
}

class HttpUtil {
    fun httpGet(url : String): String? {
    val request = Request.Builder()
        .url(url)
        .build()

    val response = HttpClient.instance.newCall(request).execute() // 落ちるところ
    val body = response.body?.string()
    return body
}
}

Answer 1

java.lang.SecurityException: Permission denied (missing INTERNET permission

インターネットを使うというパーミッションが設定されて無いのではないでしょうか.

Comments

[s_nakagawa]

ご回答ありがとうございます。
私はそもそもAndroidの権限について何も知らなかったのですが、調べてみるとAndroidでは常識中の常識的なシステムだということを思い知らされました。
Androidの基礎についてもっと勉強していこうと思います。
こんな初歩的な問題に回答していただき、とても感謝しています。

[jimbe]

ログメッセージが大抵ヒントになりますので, 色々検索してみることをお勧めします.