android - SocketException : java.net.SocketException:套接字已关闭发布版本

Question

我们在 Android 网络请求方面遇到问题，更确切地说是随机接收

SocketException:
java.net.SocketException: socket is closed
    at com.android.org.conscrypt.ConscryptFileDescriptorSocket$SSLInputStream.read(ConscryptFileDescriptorSocket.java:551)

请求似乎没有超时，异常很快抛出，而且似乎只有在release模式下，我们猜测可能与ProGuard有关。

我们使用 Retrofit、Moshi 和 RxAndroid 来处理我们的网络请求。有没有人遇到过这样的问题？

我们的依赖和它们的版本:

implementation ‘io.reactivex.rxjava2:rxandroid:2.1.1’
implementation ‘io.reactivex.rxjava2:rxjava:2.2.9’
implementation ‘com.squareup.retrofit2:adapter-rxjava2:2.5.0’
//Moshi
def moshiVersion = “1.12.0”
implementation “com.squareup.moshi:moshi:$moshiVersion”
kapt “com.squareup.moshi:moshi-kotlin-codegen:$moshiVersion”
implementation “com.squareup.retrofit2:converter-moshi:2.9.0"
implementation “com.squareup.moshi:moshi-kotlin:1.8.0”
//Networking
implementation ‘com.squareup.okhttp3:logging-interceptor:3.12.1’
implementation ‘com.squareup.retrofit2:retrofit:2.6.4’
implementation ‘com.squareup.retrofit2:converter-scalars:2.1.0’

我们所有的模型都带有@Keep 注释:

@Keep
class ModelDTO(
  @field:Json(name = “field1")
  var field1: String? = null,
  @field:Json(name = “field2”)
  var field2: List<String>? = null
)
HttpClient + Retrofit:
val client = OkHttpClient.Builder()
  .connectTimeout(300, TimeUnit.SECONDS)
  .writeTimeout(300, TimeUnit.SECONDS)
  .readTimeout(300, TimeUnit.SECONDS)
client.retryOnConnectionFailure(true)
  .addNetworkInterceptor { chain ->
    val request = chain.request().newBuilder().addHeader(“Connection”, “close”).build()
    chain.proceed(request)
  }
val moshi = Moshi.Builder()
  .add(KotlinJsonAdapterFactory())
  .build()
val retrofitBuilder = Retrofit.Builder()
retrofitBuilder.baseUrl(BuildConfig.BASE_URL)
retrofitBuilder.client(client)
  .addCallAdapterFactory(RxJava2CallAdapterFactory.create())
  .addConverterFactory(MoshiConverterFactory.create(moshi).asLenient())
  .addCallAdapterFactory(
    RxJava2CallAdapterFactory.createWithScheduler(Schedulers.io())
  )

我们的 Gradle 设置:

        release {
        debuggable false
        minifyEnabled true
        proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        consumerProguardFiles 'proguard-rules.pro'
    }

Answer 1

经过多次尝试，我们解决了这个问题:

.connectionPool(ConnectionPool(0, 1, TimeUnit.NANOSECONDS)).protocols(listOf(协议(protocol).HTTP_1_1))

这是添加到 OkHttpClient :) 工作起来非常棒!