Okhttp. Exception java.io.IOException: unexpected end of stream on Connection

Question

I faced with an issue, about third of all OkHttpClient newCall(request).execute(); requests to the server fails with this exception:

Exception java.io.IOException: unexpected end of stream on Connection{[REDACTED_DOMAIN_NAME]:80, proxy=DIRECT@ hostAddress=[REDACTED_DOMAIN_NAME]/[REDACTED_IP_ADDRESS] cipherSuite=none protocol=http/1.1}

I disabled the validation of certificates. What could be the reason of this behavior?

Ubiquitous

Probably issues with server or network. – Jesse

@Okas, thank you, it was really network issue. The reason was that the server address was blacklisted by Russia's state regulator (it blacklisted more than 14.5 million IP addresses and many companies suffered from this) – Ubiquitous

Answer 1

The OkHttpClient's default request protocol is HTTP2.0. Some Web Services are required HTTP1.1 requests.

Add protocols(listOf(Protocol.HTTP_1_1)) line to your OkHttpClient.

Example;

val okHttpClient = OkHttpClient.Builder()
                    .protocols(listOf(Protocol.HTTP_1_1))
                    .readTimeout(40, TimeUnit.SECONDS)
                    .connectTimeout(40, TimeUnit.SECONDS)
                    .addInterceptor(loggingInterceptor)
                    .addInterceptor(authInterceptor)
                    .retryOnConnectionFailure(true)
                    .build()

Launder