1 files changed, 99 insertions, 0 deletions
diff --git a/apps/http-proxy/src/ATSConnector.h b/apps/http-proxy/src/ATSConnector.h
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+++ b/apps/http-proxy/src/ATSConnector.h
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+/*
+ * Copyright (c) 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.
+ */
+
+#pragma once
+
+#include <hicn/transport/core/packet.h>
+
+#define ASIO_STANDALONE
+#include <asio.hpp>
+#include <deque>
+#include <functional>
+
+namespace transport {
+
+using asio::ip::tcp;
+
+typedef std::function<void(const uint8_t *data, std::size_t size, bool is_last,
+                           bool headers)>
+    ContentReceivedCallback;
+typedef std::function<void()> OnReconnect;
+typedef std::function<void()> ContentSentCallback;
+typedef std::deque<
+    std::pair<std::unique_ptr<utils::MemBuf>, ContentSentCallback>>
+    BufferQueue;
+
+class ATSConnector {
+  static constexpr uint32_t buffer_size = 1024 * 64;
+
+  enum class ConnectorState {
+    CLOSED,
+    CONNECTING,
+    CONNECTED,
+  };
+
+ public:
+  ATSConnector(asio::io_service &io_service, std::string &ip_address,
+               std::string &port, ContentReceivedCallback receive_callback,
+               OnReconnect on_reconnect_callback);
+
+  ~ATSConnector();
+
+  void send(const uint8_t *buffer, std::size_t len,
+            ContentSentCallback &&content_sent = 0);
+
+  void send(utils::MemBuf *buffer, ContentSentCallback &&content_sent);
+
+  void close();
+
+ private:
+  void doConnect();
+
+  void doReadHeader();
+
+  void doReadBody(std::size_t size);
+
+  void doWrite();
+
+  bool checkConnected();
+
+ private:
+  void handleRead(std::error_code ec, std::size_t length, std::size_t bytes);
+  void tryReconnection();
+  void startConnectionTimer();
+  void handleDeadline(const std::error_code &ec);
+
+  asio::io_service &io_service_;
+  asio::ip::tcp::socket socket_;
+  asio::ip::tcp::resolver resolver_;
+  asio::ip::tcp::resolver::iterator endpoint_iterator_;
+  asio::steady_timer timer_;
+
+  BufferQueue write_msgs_;
+
+  asio::streambuf header_input_buffer_;
+  uint8_t input_buffer_[buffer_size];
+
+  bool is_reconnection_;
+  bool data_available_;
+
+  ContentReceivedCallback receive_callback_;
+  OnReconnect on_reconnect_callback_;
+
+  // Connector state
+  ConnectorState state_;
+};
+
+}  // namespace transport