Added Interceptor for IOExceptions generated by OKHttp and wrapped as…

… runtime exceptions

exporters/sender/okhttp/src/main/java/io/opentelemetry/exporter/sender/okhttp/internal/IOeExceptionInterceptor.java

@@ -0,0 +1,33 @@
+/*
+ * Copyright The OpenTelemetry Authors
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+package io.opentelemetry.exporter.sender.okhttp.internal;
+
+import java.io.IOException;
+import okhttp3.Interceptor;
+import okhttp3.Response;
+import org.jetbrains.annotations.NotNull;
+
+/**
+ * Unwrapper of IOExceptions generated by the OkHttp requests.
+ *
+ * <p>This class is internal and is hence not for public use. Its APIs are unstable and can change
+ * at any time.
+ */
+public class IOeExceptionInterceptor implements Interceptor {
+  @NotNull
+  @Override
+  public Response intercept(@NotNull Chain chain) throws IOException {
+    try {
+      return chain.proceed(chain.request());
+    } catch (Throwable e) {
+      Throwable exceptionCause = e.getCause();
+      if (exceptionCause instanceof IOException) {
+        throw (IOException) exceptionCause;
+      }
+      throw e;
+    }
+  }
+}

exporters/sender/okhttp/src/main/java/io/opentelemetry/exporter/sender/okhttp/internal/OkHttpGrpcSender.java

@@ -82,6 +82,7 @@ public OkHttpGrpcSender(
         new OkHttpClient.Builder()
             .dispatcher(OkHttpUtil.newDispatcher())
             .callTimeout(Duration.ofNanos(timeoutNanos));
+    clientBuilder.addInterceptor(new IOeExceptionInterceptor());
     if (retryPolicy != null) {
       clientBuilder.addInterceptor(
           new RetryInterceptor(retryPolicy, OkHttpGrpcSender::isRetryable));

exporters/sender/okhttp/src/main/java/io/opentelemetry/exporter/sender/okhttp/internal/OkHttpHttpSender.java

@@ -77,6 +77,7 @@ public OkHttpHttpSender(
           });
     }
 
+    builder.addInterceptor(new IOeExceptionInterceptor());
     if (retryPolicy != null) {
       builder.addInterceptor(new RetryInterceptor(retryPolicy, OkHttpHttpSender::isRetryable));
     }