summaryrefslogtreecommitdiffstats
path: root/apps/http-proxy/src/http_proxy.h
blob: aa47d6a92eb370d19826e22e1deed55a71bc7557 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
/*
 * Copyright (c) 2020 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/interfaces/socket_consumer.h>
#include <hicn/transport/utils/event_thread.h>

#include "forwarder_config.h"
#include "http_session.h"
#include "icn_receiver.h"

#define ASIO_STANDALONE
#include <asio.hpp>
#include <asio/version.hpp>
#include <unordered_set>

class TcpListener {
 public:
  using AcceptCallback = std::function<void(asio::ip::tcp::socket&&)>;

  TcpListener(asio::io_service& io_service, short port, AcceptCallback callback)
      : acceptor_(io_service,
                  asio::ip::tcp::endpoint(asio::ip::tcp::v4(), port)),
#if ((ASIO_VERSION / 100 % 1000) < 12)
        socket_(io_service),
#endif
        callback_(callback) {
  }

 public:
  void doAccept() {
#if ((ASIO_VERSION / 100 % 1000) >= 12)
    acceptor_.async_accept(
        [this](std::error_code ec, asio::ip::tcp::socket socket) {
#else
    acceptor_.async_accept(socket_, [this](std::error_code ec) {
      auto socket = std::move(socket_);
#endif
          if (!ec) {
            callback_(std::move(socket));
          }

          doAccept();
        });
  }

  asio::ip::tcp::acceptor acceptor_;
#if ((ASIO_VERSION / 100 % 1000) < 12)
  asio::ip::tcp::socket socket_;
#endif
  AcceptCallback callback_;
};

namespace transport {

class HTTPClientConnectionCallback;

class Receiver {
 public:
  Receiver() : thread_() {}

 protected:
  utils::EventThread thread_;
};

class TcpReceiver : public Receiver {
  friend class HTTPClientConnectionCallback;

 public:
  TcpReceiver(std::uint16_t port, const std::string& prefix,
              const std::string& ipv6_first_word);

 private:
  void onNewConnection(asio::ip::tcp::socket&& socket);
  void onClientDisconnect(HTTPClientConnectionCallback* client);

  template <typename Callback>
  void parseHicnHeader(std::string& hicn_header, Callback&& callback) {
    forwarder_config_.parseHicnHeader(hicn_header,
                                      std::forward<Callback>(callback));
  }

  TcpListener listener_;
  std::string prefix_;
  std::string ipv6_first_word_;
  std::deque<HTTPClientConnectionCallback*> http_clients_;
  std::unordered_set<HTTPClientConnectionCallback*> used_http_clients_;
  ForwarderConfig forwarder_config_;
};

class IcnReceiver : public Receiver {
 public:
  template <typename... Args>
  IcnReceiver(Args&&... args)
      : Receiver(),
        icn_consum_producer_(thread_.getIoService(),
                             std::forward<Args>(args)...) {
    icn_consum_producer_.run();
  }

 private:
  AsyncConsumerProducer icn_consum_producer_;
};

class HTTPProxy {
 public:
  enum Server { CREATE };
  enum Client { WRAP_BUFFER };

  struct CommonParams {
    std::string prefix;
    std::string first_ipv6_word;

    virtual void printParams() { std::cout << "Parameters: " << std::endl; };
  };

  struct ClientParams : virtual CommonParams {
    short tcp_listen_port;
    void printParams() override {
      std::cout << "Running HTTP/TCP -> HTTP/hICN proxy." << std::endl;
      CommonParams::printParams();
      std::cout << "\t"
                << "HTTP listen port: " << tcp_listen_port << std::endl;
      std::cout << "\t"
                << "Consumer Prefix: " << prefix << std::endl;
      std::cout << "\t"
                << "Prefix first word: " << first_ipv6_word << std::endl;
    }
  };

  struct ServerParams : virtual CommonParams {
    std::string origin_address;
    std::string origin_port;
    std::string cache_size;
    std::string mtu;
    std::string content_lifetime;
    bool manifest;

    void printParams() override {
      std::cout << "Running HTTP/hICN -> HTTP/TCP proxy." << std::endl;
      CommonParams::printParams();
      std::cout << "\t"
                << "Origin address: " << origin_address << std::endl;
      std::cout << "\t"
                << "Origin port: " << origin_port << std::endl;
      std::cout << "\t"
                << "Producer cache size: " << cache_size << std::endl;
      std::cout << "\t"
                << "hICN MTU: " << mtu << std::endl;
      std::cout << "\t"
                << "Default content lifetime: " << content_lifetime
                << std::endl;
      std::cout << "\t"
                << "Producer Prefix: " << prefix << std::endl;
      std::cout << "\t"
                << "Prefix first word: " << first_ipv6_word << std::endl;
      std::cout << "\t"
                << "Use manifest: " << manifest << std::endl;
    }
  };

  HTTPProxy(ClientParams& icn_params, std::size_t n_thread = 1);
  HTTPProxy(ServerParams& icn_params, std::size_t n_thread = 1);

  void run() { sleep(1000000); }

 private:
  void acceptTCPClient(asio::ip::tcp::socket&& socket);

 private:
  std::vector<std::unique_ptr<Receiver>> receivers_;
};

}  // namespace transport