Remove Android network retries (#1579)

Network retries are implemented in the application layer

Relates-To: OCMAM-396

Signed-off-by: Mykhailo Kuchma <ext-mykhailo.kuchma@here.com>

Author: mykhailo-kuchma

olp-cpp-sdk-core/src/http/android/HttpClient.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019 HERE Europe B.V.
+ * Copyright (C) 2019-2025 HERE Europe B.V.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -103,8 +103,7 @@ public Request(
             byte[] postData,
             String proxyServer,
             int proxyPort,
-            int proxyType,
-            int maxRetries) {
+            int proxyType) {
       this.url = url;
       this.verb = verb;
       this.requestId = requestId;
@@ -140,7 +139,6 @@ public Request(
           this.proxyType = Proxy.Type.HTTP;
           break;
       }
-      this.maxRetries = maxRetries;
     }
 
     public final String url() {
@@ -191,10 +189,6 @@ public final boolean noProxy() {
       return (hasProxy() && this.proxyServer.equals("No")) || this.proxyType == Proxy.Type.DIRECT;
     }
 
-    public final int maxRetries() {
-      return this.maxRetries;
-    }
-
     private final String url;
     private final long requestId;
     private final int connectionTimeout;
@@ -205,7 +199,6 @@ public final int maxRetries() {
     private final String proxyServer;
     private final int proxyPort;
     private final Proxy.Type proxyType;
-    private final int maxRetries;
   }
 
   /**
@@ -232,7 +225,6 @@ protected Void doInBackground(Request... requests) {
         boolean downloadContentSizePresent = false;
 
         try {
-          int retryCount = 0;
           boolean isDone = false;
           final URL url = new URL(request.url());
 
@@ -242,13 +234,6 @@ protected Void doInBackground(Request... requests) {
               return null;
             }
 
-            // TODO: replace with more elegant and controlled approach
-            if (retryCount > 0) {
-              Thread.sleep(100);
-
-              cleanup(httpConn);
-            }
-
             URLConnection conn;
             if (request.hasProxy()) {
               if (request.noProxy()) {
@@ -352,21 +337,8 @@ protected Void doInBackground(Request... requests) {
               try {
                 status = httpConn.getResponseCode();
                 error = httpConn.getResponseMessage();
-
-                if ((status > 0)
-                        && ((status < HttpURLConnection.HTTP_OK)
-                        || (status >= HttpURLConnection.HTTP_SERVER_ERROR))) {
-                  if (retryCount++ < request.maxRetries()) {
-                    continue;
-                  }
-                }
               } catch (SocketTimeoutException | UnknownHostException e) {
-                if (retryCount++ < request.maxRetries()) {
-                  httpClient.resetRequest(request.requestId());
-                  continue;
-                } else {
-                  throw e;
-                }
+                throw e;
               }
             }
 
@@ -458,17 +430,12 @@ protected Void doInBackground(Request... requests) {
                 throw e;
               }
             } catch (SocketTimeoutException e) {
-              if (retryCount++ < request.maxRetries()) {
-                httpClient.resetRequest(request.requestId());
-                continue;
-              } else {
-                throw e;
-              }
+              throw e;
             }
 
             checkCancelled();
 
-            // The request is completed, not cancelled or retried
+            // The request is completed and not cancelled
             // Notifies the native (C++) side that request was completed
             isDone = true;
             httpClient.completeRequest(request.requestId(), status, uploadedContentSize, downloadContentSize, error, contentType);
@@ -616,8 +583,7 @@ public HttpTask send(
           byte[] postData,
           String proxyServer,
           int proxyPort,
-          int proxyType,
-          int maxRetries) {
+          int proxyType) {
     final Request request =
             new Request(
                     url,
@@ -629,8 +595,7 @@ public HttpTask send(
                     postData,
                     proxyServer,
                     proxyPort,
-                    proxyType,
-                    maxRetries);
+                    proxyType);
     final HttpTask task = new HttpTask(this);
     task.executeOnExecutor(executor, request);
     return task;
@@ -647,6 +612,4 @@ private synchronized native void completeRequest(
   private synchronized native void dateAndOffsetCallback(long requestId, long date, long offset);
   // Callback set date and offset
   private synchronized native void headersCallback(long requestId, String[] headers);
-  // Reset request for retry
-  private synchronized native void resetRequest(long requestId);
-}
+}

olp-cpp-sdk-core/src/http/android/NetworkAndroid.cpp

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2019-2021 HERE Europe B.V.
+ * Copyright (C) 2019-2025 HERE Europe B.V.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -148,22 +148,6 @@ Java_com_here_olp_network_HttpClient_completeRequest(
                            downloaded_bytes, error, content_type);
 }
 
-/*
- * Reset request upon retry
- */
-extern "C" OLP_SDK_NETWORK_ANDROID_EXPORT void JNICALL
-Java_com_here_olp_network_HttpClient_resetRequest(JNIEnv* env, jobject obj,
-                                                  jlong request_id) {
-  auto network = olp::http::GetNetworkAndroidNativePtr(env, obj);
-  if (!network) {
-    OLP_SDK_LOG_WARNING(
-        kLogTag,
-        "ResetRequest failed - network is invalid, request_id=" << request_id);
-    return;
-  }
-  network->ResetRequest(env, request_id);
-}
-
 NetworkAndroid::NetworkAndroid(size_t max_requests_count)
     : java_self_class_(nullptr),
       jni_send_method_(nullptr),
@@ -396,10 +380,7 @@ bool NetworkAndroid::Initialize() {
              &Java_com_here_olp_network_HttpClient_dataCallback)},
         {"completeRequest", "(JIIILjava/lang/String;Ljava/lang/String;)V",
          reinterpret_cast<void*>(
-             &Java_com_here_olp_network_HttpClient_completeRequest)},
-        {"resetRequest", "(J)V",
-         reinterpret_cast<void*>(
-             &Java_com_here_olp_network_HttpClient_resetRequest)}};
+             &Java_com_here_olp_network_HttpClient_completeRequest)}};
 
     env->RegisterNatives(java_self_class_, methods,
                          sizeof(methods) / sizeof(methods[0]));
@@ -715,21 +696,6 @@ void NetworkAndroid::CompleteRequest(JNIEnv* env, RequestId request_id,
   run_thread_ready_cv_.notify_all();
 }
 
-void NetworkAndroid::ResetRequest(JNIEnv* env, RequestId request_id) {
-  std::lock_guard<std::mutex> lock(requests_mutex_);
-  if (!started_) {
-    return;
-  }
-
-  auto req = requests_.find(request_id);
-  if (req == requests_.end()) {
-    OLP_SDK_LOG_WARNING(kLogTag,
-                        "ResetRequest of unknown request_id=" << request_id);
-    return;
-  }
-  req->second->Reinitialize();
-}
-
 jobjectArray NetworkAndroid::CreateExtraHeaders(
     JNIEnv* env,
     const std::vector<std::pair<std::string, std::string> >& extra_headers) {
@@ -970,7 +936,6 @@ SendOutcome NetworkAndroid::Send(NetworkRequest request,
                             .count());
   const jint jproxy_port = static_cast<jint>(proxy_settings.GetPort());
   const jint jproxy_type = static_cast<jint>(proxy_settings.GetType());
-  const jint jmax_retries = 1;
   // Do sending
   {
     std::lock_guard<std::mutex> lock(requests_mutex_);
@@ -989,7 +954,7 @@ SendOutcome NetworkAndroid::Send(NetworkRequest request,
     auto task_obj = env.GetEnv()->CallObjectMethod(
         obj_, jni_send_method_, jurl, jhttp_verb, jrequest_id,
         jconnection_timeout, jtransfer_timeout, jheaders, jbody, jproxy,
-        jproxy_port, jproxy_type, jmax_retries);
+        jproxy_port, jproxy_type);
     if (env.GetEnv()->ExceptionOccurred() || !task_obj) {
       OLP_SDK_LOG_ERROR(
           kLogTag, "Send failed - HttpClient error, url=" << request.GetUrl());

olp-cpp-sdk-core/src/http/android/NetworkAndroid.h

@@ -104,12 +104,6 @@ class NetworkAndroid : public Network {
                        int uploaded_bytes, int downloaded_bytes, jstring error,
                        jstring content_type);
 
-  /**
-   * @brief Reset the given message if retry attempt invoked
-   * @param id - Unique Id of the message
-   */
-  void ResetRequest(JNIEnv* env, RequestId request_id);
-
   /**
    * @brief Setup JavaVM pointer
    *        This must be done before calling initialize