1 files changed, 254 insertions, 0 deletions
diff --git a/libtransport/src/hicn/transport/interfaces/full_duplex_socket.h b/libtransport/src/hicn/transport/interfaces/full_duplex_socket.h
new file mode 100755
index 000000000..f881bea54
--- /dev/null
+++ b/libtransport/src/hicn/transport/interfaces/full_duplex_socket.h
@@ -0,0 +1,254 @@
+/*
+ * 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.
+ */
+
+/*
+ * This class is created for sending/receiving data over an ICN network.
+ */
+
+#pragma once
+
+#include <hicn/transport/core/prefix.h>
+#include <hicn/transport/interfaces/async_transport.h>
+#include <hicn/transport/interfaces/socket_consumer.h>
+#include <hicn/transport/interfaces/socket_producer.h>
+#include <hicn/transport/portability/portability.h>
+#include <hicn/transport/utils/sharable_vector.h>
+
+#include <unordered_set>
+#include <vector>
+
+namespace transport {
+
+namespace interface {
+
+enum class MessageType : uint8_t { ACTION, RESPONSE, PAYLOAD };
+
+enum class Action : uint8_t {
+  SUBSCRIBE,
+  CANCEL_SUBSCRIPTION,
+  SIGNAL_PRODUCTION,
+};
+
+enum class ReturnCode : uint8_t {
+  OK,
+  FAILED,
+};
+
+struct MessageHeader {
+  MessageType msg_type;
+  uint8_t reserved[2];
+};
+
+struct ActionMessage {
+  MessageHeader header;
+  Action action;
+  uint64_t name[2];
+};
+
+struct ResponseMessage {
+  MessageHeader header;
+  ReturnCode return_code;
+};
+
+struct SubscriptionResponseMessage {
+  ResponseMessage response;
+  uint64_t name[2];
+};
+
+struct PayloadMessage {
+  MessageHeader header;
+  uint8_t reserved[1];
+};
+
+// struct NotificationMessage {
+//   Action action;
+//   uint8_t reserved[3];
+//   uint64_t
+// }
+
+using core::Prefix;
+
+class AsyncFullDuplexSocket : public AsyncSocket,
+                              public AsyncReader,
+                              public AsyncWriter,
+                              public AsyncAcceptor {
+ private:
+  struct Counters {
+    uint64_t app_bytes_written_;
+    uint64_t app_bytes_read_;
+
+    TRANSPORT_ALWAYS_INLINE void updateBytesWritten(uint64_t bytes) {
+      app_bytes_written_ += bytes;
+    }
+
+    TRANSPORT_ALWAYS_INLINE void updateBytesRead(uint64_t bytes) {
+      app_bytes_read_ += bytes;
+    }
+  };
+
+ public:
+  using UniquePtr = std::unique_ptr<AsyncFullDuplexSocket>;
+  using SharedPtr = std::unique_ptr<AsyncFullDuplexSocket>;
+
+  AsyncFullDuplexSocket(const Prefix &locator, asio::io_service &io_service);
+  AsyncFullDuplexSocket(const core::Prefix &locator);
+
+  ~AsyncFullDuplexSocket() {
+    TRANSPORT_LOGI("Adios AsyncFullDuplexSocket!!!");
+  };
+
+  using ReadCallback = AsyncReader::ReadCallback;
+  using WriteCallback = AsyncWriter::WriteCallback;
+
+  TRANSPORT_ALWAYS_INLINE void setReadCB(ReadCallback *callback) override {
+    read_callback_ = callback;
+  }
+
+  TRANSPORT_ALWAYS_INLINE ReadCallback *getReadCallback() const override {
+    return read_callback_;
+  }
+
+  TRANSPORT_ALWAYS_INLINE void setWriteCB(WriteCallback *callback) override {
+    write_callback_ = callback;
+  }
+
+  TRANSPORT_ALWAYS_INLINE WriteCallback *getWriteCallback() const override {
+    return write_callback_;
+  }
+
+  TRANSPORT_ALWAYS_INLINE const core::Prefix &getLocator() { return locator_; }
+
+  void connect(ConnectCallback *callback, const core::Prefix &prefix) override;
+
+  void write(WriteCallback *callback, const void *buf, size_t bytes,
+             const PublicationOptions &options,
+             WriteFlags flags = WriteFlags::NONE) override;
+
+  virtual void write(WriteCallback *callback,
+                     utils::SharableVector<uint8_t> &&output_buffer,
+                     const PublicationOptions &options,
+                     WriteFlags flags = WriteFlags::NONE) override;
+
+  void waitForSubscribers(AcceptCallback *cb) override;
+
+  // void writev(
+  //     WriteCallback* callback,
+  //     const iovec* vec,
+  //     size_t count,
+  //     Name &&content_to_publish_name,
+  //     WriteFlags flags = WriteFlags::NONE) override;
+
+  void close() override;
+
+  void closeNow() override;
+
+  void shutdownWrite() override;
+
+  void shutdownWriteNow() override;
+
+  bool good() const override;
+
+  bool readable() const override;
+
+  bool writable() const override;
+
+  bool isPending() const override;
+
+  bool connected() const override;
+
+  bool error() const override;
+
+  void setSendTimeout(uint32_t milliseconds) override;
+
+  size_t getAppBytesWritten() const override;
+  size_t getRawBytesWritten() const override;
+  size_t getAppBytesReceived() const override;
+  size_t getRawBytesReceived() const override;
+
+  uint32_t getSendTimeout() const override;
+
+ private:
+  std::shared_ptr<core::ContentObject> decodeSynchronizationMessage(
+      const core::Interest &interest);
+
+  class OnConnectCallback : public BasePortal::ConsumerCallback {
+   public:
+    OnConnectCallback(AsyncFullDuplexSocket &socket) : socket_(socket){};
+    virtual ~OnConnectCallback() = default;
+    void onContentObject(core::Interest::Ptr &&,
+                         core::ContentObject::Ptr &&content_object) override;
+    void onTimeout(core::Interest::Ptr &&interest) override;
+
+   private:
+    AsyncFullDuplexSocket &socket_;
+  };
+
+  class OnSignalCallback : public BasePortal::ConsumerCallback {
+   public:
+    OnSignalCallback(AsyncFullDuplexSocket &socket) : socket_(socket){};
+    virtual ~OnSignalCallback() = default;
+    void onContentObject(core::Interest::Ptr &&,
+                         core::ContentObject::Ptr &&content_object);
+    void onTimeout(core::Interest::Ptr &&interest);
+
+   private:
+    AsyncFullDuplexSocket &socket_;
+  };
+
+  void onControlInterest(ProducerSocket &s, const core::Interest &i);
+  void onContentProduced(ProducerSocket &producer, const std::error_code &ec,
+                         uint64_t bytes_written);
+  void onContentRetrieved(ConsumerSocket &s, std::size_t size,
+                          const std::error_code &ec);
+
+  void signalProductionToSubscribers(const core::Name &name);
+  void piggybackPayloadToSubscribers(const core::Name &name,
+                                     const uint8_t *buffer, std::size_t bytes);
+
+  std::shared_ptr<core::ContentObject> createAck();
+  std::shared_ptr<core::ContentObject> createSubscriptionResponse(
+      const core::Name &name);
+
+  core::Prefix locator_;
+  uint32_t incremental_suffix_;
+  core::Name sync_notification_;
+  //  std::unique_ptr<BasePortal> portal_;
+  asio::io_service internal_io_service_;
+  asio::io_service &io_service_;
+  asio::io_service::work work_;
+
+  // These names represent the "locator" of a certain
+  // peer that subscribed to this.
+  std::unordered_set<core::Name> subscribers_;
+
+  // Useful for publishing / Retrieving data
+  std::unique_ptr<ProducerSocket> producer_;
+  std::unique_ptr<ConsumerSocket> consumer_;
+
+  ReadCallback *read_callback_;
+  WriteCallback *write_callback_;
+  ConnectCallback *connect_callback_;
+  AcceptCallback *accept_callback_;
+
+  std::unique_ptr<OnConnectCallback> internal_connect_callback_;
+  std::unique_ptr<OnSignalCallback> internal_signal_callback_;
+
+  uint32_t send_timeout_milliseconds_;
+  struct Counters counters_;
+  std::shared_ptr<utils::SharableVector<uint8_t>> receive_buffer_;
+};
+
+}  // namespace interface
+}  // namespace transport