WebSocket++  0.8.0-dev
C++ websocket client/server library
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step4.cpp
1 /*
2  * Copyright (c) 2014, Peter Thorson. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are met:
6  * * Redistributions of source code must retain the above copyright
7  * notice, this list of conditions and the following disclaimer.
8  * * Redistributions in binary form must reproduce the above copyright
9  * notice, this list of conditions and the following disclaimer in the
10  * documentation and/or other materials provided with the distribution.
11  * * Neither the name of the WebSocket++ Project nor the
12  * names of its contributors may be used to endorse or promote products
13  * derived from this software without specific prior written permission.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED. IN NO EVENT SHALL PETER THORSON BE LIABLE FOR ANY
19  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
21  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
22  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
24  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26 
27 // **NOTE:** This file is a snapshot of the WebSocket++ utility client tutorial.
28 // Additional related material can be found in the tutorials/utility_client
29 // directory of the WebSocket++ repository.
30 
31 #include <websocketpp/config/asio_no_tls_client.hpp>
32 #include <websocketpp/client.hpp>
33 
34 #include <websocketpp/common/thread.hpp>
35 #include <websocketpp/common/memory.hpp>
36 
37 #include <cstdlib>
38 #include <iostream>
39 #include <map>
40 #include <string>
41 #include <sstream>
42 
43 typedef websocketpp::client<websocketpp::config::asio_client> client;
44 
45 class connection_metadata {
46 public:
47  typedef websocketpp::lib::shared_ptr<connection_metadata> ptr;
48 
49  connection_metadata(int id, websocketpp::connection_hdl hdl, std::string uri)
50  : m_id(id)
51  , m_hdl(hdl)
52  , m_status("Connecting")
53  , m_uri(uri)
54  , m_server("N/A")
55  {}
56 
57  void on_open(client * c, websocketpp::connection_hdl hdl) {
58  m_status = "Open";
59 
60  client::connection_ptr con = c->get_con_from_hdl(hdl);
61  m_server = con->get_response_header("Server");
62  }
63 
64  void on_fail(client * c, websocketpp::connection_hdl hdl) {
65  m_status = "Failed";
66 
67  client::connection_ptr con = c->get_con_from_hdl(hdl);
68  m_server = con->get_response_header("Server");
69  m_error_reason = con->get_ec().message();
70  }
71 
72  friend std::ostream & operator<< (std::ostream & out, connection_metadata const & data);
73 private:
74  int m_id;
75  websocketpp::connection_hdl m_hdl;
76  std::string m_status;
77  std::string m_uri;
78  std::string m_server;
79  std::string m_error_reason;
80 };
81 
82 std::ostream & operator<< (std::ostream & out, connection_metadata const & data) {
83  out << "> URI: " << data.m_uri << "\n"
84  << "> Status: " << data.m_status << "\n"
85  << "> Remote Server: " << (data.m_server.empty() ? "None Specified" : data.m_server) << "\n"
86  << "> Error/close reason: " << (data.m_error_reason.empty() ? "N/A" : data.m_error_reason);
87 
88  return out;
89 }
90 
91 class websocket_endpoint {
92 public:
93  websocket_endpoint () : m_next_id(0) {
94  m_endpoint.clear_access_channels(websocketpp::log::alevel::all);
95  m_endpoint.clear_error_channels(websocketpp::log::elevel::all);
96 
97  m_endpoint.init_asio();
98  m_endpoint.start_perpetual();
99 
100  m_thread = websocketpp::lib::make_shared<websocketpp::lib::thread>(&client::run, &m_endpoint);
101  }
102 
103  int connect(std::string const & uri) {
104  websocketpp::lib::error_code ec;
105 
106  client::connection_ptr con = m_endpoint.get_connection(uri, ec);
107 
108  if (ec) {
109  std::cout << "> Connect initialization error: " << ec.message() << std::endl;
110  return -1;
111  }
112 
113  int new_id = m_next_id++;
114  connection_metadata::ptr metadata_ptr = websocketpp::lib::make_shared<connection_metadata>(new_id, con->get_handle(), uri);
115  m_connection_list[new_id] = metadata_ptr;
116 
117  con->set_open_handler(websocketpp::lib::bind(
118  &connection_metadata::on_open,
119  metadata_ptr,
120  &m_endpoint,
121  websocketpp::lib::placeholders::_1
122  ));
123  con->set_fail_handler(websocketpp::lib::bind(
124  &connection_metadata::on_fail,
125  metadata_ptr,
126  &m_endpoint,
127  websocketpp::lib::placeholders::_1
128  ));
129 
130  m_endpoint.connect(con);
131 
132  return new_id;
133  }
134 
135  connection_metadata::ptr get_metadata(int id) const {
136  con_list::const_iterator metadata_it = m_connection_list.find(id);
137  if (metadata_it == m_connection_list.end()) {
138  return connection_metadata::ptr();
139  } else {
140  return metadata_it->second;
141  }
142  }
143 private:
144  typedef std::map<int,connection_metadata::ptr> con_list;
145 
146  client m_endpoint;
147  websocketpp::lib::shared_ptr<websocketpp::lib::thread> m_thread;
148 
149  con_list m_connection_list;
150  int m_next_id;
151 };
152 
153 int main() {
154  bool done = false;
155  std::string input;
156  websocket_endpoint endpoint;
157 
158  while (!done) {
159  std::cout << "Enter Command: ";
160  std::getline(std::cin, input);
161 
162  if (input == "quit") {
163  done = true;
164  } else if (input == "help") {
165  std::cout
166  << "\nCommand List:\n"
167  << "connect <ws uri>\n"
168  << "show <connection id>\n"
169  << "help: Display this help text\n"
170  << "quit: Exit the program\n"
171  << std::endl;
172  } else if (input.substr(0,7) == "connect") {
173  int id = endpoint.connect(input.substr(8));
174  if (id != -1) {
175  std::cout << "> Created connection with id " << id << std::endl;
176  }
177  } else if (input.substr(0,4) == "show") {
178  int id = atoi(input.substr(5).c_str());
179 
180  connection_metadata::ptr metadata = endpoint.get_metadata(id);
181  if (metadata) {
182  std::cout << *metadata << std::endl;
183  } else {
184  std::cout << "> Unknown connection id " << id << std::endl;
185  }
186  } else {
187  std::cout << "> Unrecognized Command" << std::endl;
188  }
189  }
190 
191  return 0;
192 }
193 
194 /*
195 
196 clang++ -std=c++11 -stdlib=libc++ -I/Users/zaphoyd/software/websocketpp/ -I/Users/zaphoyd/software/boost_1_55_0/ -D_WEBSOCKETPP_CPP11_STL_ step4.cpp /Users/zaphoyd/software/boost_1_55_0/stage/lib/libboost_system.a
197 
198 clang++ -I/Users/zaphoyd/software/websocketpp/ -I/Users/zaphoyd/software/boost_1_55_0/ step4.cpp /Users/zaphoyd/software/boost_1_55_0/stage/lib/libboost_system.a /Users/zaphoyd/software/boost_1_55_0/stage/lib/libboost_thread.a /Users/zaphoyd/software/boost_1_55_0/stage/lib/libboost_random.a
199 
200 clang++ -std=c++11 -stdlib=libc++ -I/Users/zaphoyd/Documents/websocketpp/ -I/Users/zaphoyd/Documents/boost_1_53_0_libcpp/ -D_WEBSOCKETPP_CPP11_STL_ step4.cpp /Users/zaphoyd/Documents/boost_1_53_0_libcpp/stage/lib/libboost_system.a
201 
202 */
friend std::istream & operator>>(std::istream &in, type &t)
Overloaded stream input operator.
Definition: connection.hpp:142