1 files changed, 83 insertions, 0 deletions
diff --git a/libtransport/src/hicn/transport/protocols/reassembly.cc b/libtransport/src/hicn/transport/protocols/reassembly.cc
new file mode 100644
index 000000000..36cfb89a7
--- /dev/null
+++ b/libtransport/src/hicn/transport/protocols/reassembly.cc
@@ -0,0 +1,83 @@
+/*
+ * Copyright (c) 2017-2019 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <hicn/transport/interfaces/socket_consumer.h>
+#include <hicn/transport/protocols/indexing_manager.h>
+#include <hicn/transport/protocols/reassembly.h>
+#include <hicn/transport/utils/array.h>
+
+namespace transport {
+
+namespace protocol {
+
+BaseReassembly::BaseReassembly(interface::ConsumerSocket *icn_socket,
+                               ContentReassembledCallback *content_callback)
+    : reassembly_consumer_socket_(icn_socket),
+      zero_index_manager_(std::make_unique<ZeroIndexManager>()),
+      incremental_index_manager_(
+          std::make_unique<IncrementalIndexManager>(icn_socket)),
+      manifest_index_manager_(
+          std::make_unique<ManifestIndexManager>(icn_socket)),
+      index_manager_(zero_index_manager_.get()),
+      index_(0) {
+  setContentCallback(content_callback);
+}
+
+void BaseReassembly::reassemble(ContentObject::Ptr &&content_object) {
+  if (TRANSPORT_EXPECT_TRUE(content_object != nullptr)) {
+    received_packets_.emplace(std::make_pair(
+        content_object->getName().getSuffix(), std::move(content_object)));
+  }
+
+  auto it = received_packets_.find(index_);
+  while (it != received_packets_.end()) {
+    if (it->second->getPayloadType() == PayloadType::CONTENT_OBJECT) {
+      copyContent(*it->second);
+      received_packets_.erase(it);
+    }
+
+    index_ = index_manager_->getNextReassemblySegment();
+    it = received_packets_.find(index_);
+  }
+}
+
+void BaseReassembly::copyContent(const ContentObject &content_object) {
+  utils::Array<> a = content_object.getPayload();
+
+  std::shared_ptr<std::vector<uint8_t>> content_buffer;
+  reassembly_consumer_socket_->getSocketOption(
+      interface::GeneralTransportOptions::APPLICATION_BUFFER, content_buffer);
+
+  content_buffer->insert(content_buffer->end(), (uint8_t *)a.data(),
+                         (uint8_t *)a.data() + a.length());
+
+  bool download_completed =
+      index_manager_->getFinalSuffix() == content_object.getName().getSuffix();
+
+  if (TRANSPORT_EXPECT_FALSE(download_completed)) {
+    content_callback_->onContentReassembled(std::make_error_code(std::errc(0)));
+  }
+}
+
+void BaseReassembly::reset() {
+  manifest_index_manager_->reset();
+  incremental_index_manager_->reset();
+
+  received_packets_.clear();
+}
+
+}  // namespace protocol
+
+}  // end namespace transport