CODEWITHSUNDEEP
androidkotlinkotlin-coroutines
Mathew
Mathew

Reputation: 57

FATAL EXCEPTION: During Retrofit network request : Kotlin Coroutine

I am getting a Fatal exception while making an API call using co-routine and retrofit in android kotlin. And app crashes with below exception.

E/AndroidRuntime: FATAL EXCEPTION: DefaultDispatcher-worker-7
Process: com.jamhub.barbeque, PID: 18525
java.net.SocketTimeoutException: timeout
    at okhttp3.internal.http2.Http2Stream$StreamTimeout.newTimeoutException(Http2Stream.java:656)
    at okhttp3.internal.http2.Http2Stream$StreamTimeout.exitAndThrowIfTimedOut(Http2Stream.java:664)
    at okhttp3.internal.http2.Http2Stream.takeHeaders(Http2Stream.java:153)
    at okhttp3.internal.http2.Http2Codec.readResponseHeaders(Http2Codec.java:131)
    at okhttp3.internal.http.CallServerInterceptor.intercept(CallServerInterceptor.java:88)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.connection.ConnectInterceptor.intercept(ConnectInterceptor.java:45)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
    at okhttp3.internal.cache.CacheInterceptor.intercept(CacheInterceptor.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)
    at okhttp3.internal.http.BridgeInterceptor.intercept(BridgeInterceptor.java:93)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RetryAndFollowUpInterceptor.intercept(RetryAndFollowUpInterceptor.java:126)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:147)
    at okhttp3.internal.http.RealInterceptorChain.proceed(RealInterceptorChain.java:121)

Tried adding time out, CoroutineExceptionHandler

val client = OkHttpClient().newBuilder().addInterceptor(object : Interceptor {
                    override fun intercept(chain: Interceptor.Chain): Response {
                        val request = chain.request()
                            .newBuilder()
                            .build()
                        return chain.proceed(request)
                    }
                }).callTimeout(30, TimeUnit.SECONDS)
                    .connectTimeout(10, TimeUnit.SECONDS)
                    .writeTimeout(10, TimeUnit.SECONDS)
                    .readTimeout(30, TimeUnit.SECONDS)
                    .build()

                retrofitSocial = Retrofit.Builder()
                    .baseUrl(BuildConfig.BASE_URL)
                    .addConverterFactory(GsonConverterFactory.create())
                    .client(client)
                    .build()

It shouldn't crash if the exception has occurred ideally it should return the request failure.

Upvotes: 2

Views: 6547

Answers (1)

r2rek
r2rek

Reputation: 2263

As per the error crashing the app - in your call logic you're try-catching the wrong thing :) It should be formed like this:

try {
    val response = api?.generateOTP(otpRequestBody)
    withContext(Dispatchers.Main) { 
         when (response?.code()) { } } 
catch (e: IOException) { 
}  /* there are many exceptions thrown by Retrofit, all are subclasses of IOException */

Since it's not response?.code() that's throwing exception, but the api?.generateOTP(otpRequestBody).

As for the timeout itself - you might have wrong URL, weak internet connection, you'll need to provide more info for us to find the reason out :)

Or you can try the CoroutineExceptionHandler:

val exceptionHandler = CoroutineExceptionHandler{_ , throwable-> 
 throwable.printStackTrace()
}

//when you make request:

scope.launch(Dispatchers.IO + exceptionHandler ){

}

Upvotes: 6

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