WebSocket++ 0.8.2
C++ websocket client/server library
Loading...
Searching...
No Matches
server_endpoint.hpp
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
28#ifndef WEBSOCKETPP_SERVER_ENDPOINT_HPP
29#define WEBSOCKETPP_SERVER_ENDPOINT_HPP
30
31#include <websocketpp/endpoint.hpp>
32
33#include <websocketpp/logger/levels.hpp>
34
35#include <websocketpp/common/system_error.hpp>
36
37namespace websocketpp {
38
40
43template <typename config>
44class server : public endpoint<connection<config>,config> {
45public:
48
50 typedef typename config::concurrency_type concurrency_type;
52 typedef typename config::transport_type transport_type;
53
58
60 typedef typename transport_type::transport_con_type transport_con_type;
62 typedef typename transport_con_type::ptr transport_con_ptr;
63
66
67 friend class connection<config>;
68
69 explicit server() : endpoint_type(true)
70 {
71 endpoint_type::m_alog->write(log::alevel::devel, "server constructor");
72 }
73
76
77#ifdef _WEBSOCKETPP_DEFAULT_DELETE_FUNCTIONS_
78 // no copy constructor because endpoints are not copyable
80
81 // no copy assignment operator because endpoints are not copyable
82 server<config> & operator=(server<config> const &) = delete;
83#endif // _WEBSOCKETPP_DEFAULT_DELETE_FUNCTIONS_
84
85#ifdef _WEBSOCKETPP_MOVE_SEMANTICS_
87 server<config>(server<config> && o) : endpoint<connection<config>,config>(std::move(o)) {}
88
89#ifdef _WEBSOCKETPP_DEFAULT_DELETE_FUNCTIONS_
90 // no move assignment operator because of const member variables
91 server<config> & operator=(server<config> &&) = delete;
92#endif // _WEBSOCKETPP_DEFAULT_DELETE_FUNCTIONS_
93
94#endif // _WEBSOCKETPP_MOVE_SEMANTICS_
95
97
107 return endpoint_type::create_connection();
108 }
109
111
121 void start_accept(lib::error_code & ec) {
122 if (!transport_type::is_listening()) {
123 ec = error::make_error_code(error::async_accept_not_listening);
124 return;
125 }
126
127 ec = lib::error_code();
129
130 if (!con) {
131 ec = error::make_error_code(error::con_creation_failed);
132 return;
133 }
134
135 transport_type::async_accept(
136 lib::static_pointer_cast<transport_con_type>(con),
137 lib::bind(&type::handle_accept,this,con,lib::placeholders::_1),
138 ec
139 );
140
141 if (ec && con) {
142 // If the connection was constructed but the accept failed,
143 // terminate the connection to prevent memory leaks
144 con->terminate(lib::error_code());
145 }
146 }
147
149
158 lib::error_code ec;
159 start_accept(ec);
160 if (ec) {
161 throw exception(ec);
162 }
163 }
164
166 void handle_accept(connection_ptr con, lib::error_code const & ec) {
167 if (ec) {
168 con->terminate(ec);
169
170 if (ec == error::operation_canceled) {
171 endpoint_type::m_elog->write(log::elevel::info,
172 "handle_accept error: "+ec.message());
173 } else {
174 endpoint_type::m_elog->write(log::elevel::rerror,
175 "handle_accept error: "+ec.message());
176 }
177 } else {
178 con->start();
179 }
180
181 lib::error_code start_ec;
182 start_accept(start_ec);
183 if (start_ec == error::async_accept_not_listening) {
184 endpoint_type::m_elog->write(log::elevel::info,
185 "Stopping acceptance of new connections because the underlying transport is no longer listening.");
186 } else if (start_ec) {
187 endpoint_type::m_elog->write(log::elevel::rerror,
188 "Restarting async_accept loop failed: "+ec.message());
189 }
190 }
191};
192
193} // namespace websocketpp
194
195#endif //WEBSOCKETPP_SERVER_ENDPOINT_HPP
Represents an individual WebSocket connection.
lib::shared_ptr< type > ptr
Type of a shared pointer to this connection.
Creates and manages connections associated with a WebSocket endpoint.
Definition endpoint.hpp:42
Server endpoint role based on the given config.
void start_accept(lib::error_code &ec)
Starts the server's async connection acceptance loop (exception free)
transport_type::transport_con_type transport_con_type
Type of the connection transport component.
connection_type::ptr connection_ptr
Type of a shared pointer to the connections this server will create.
server< config > type
Type of this endpoint.
endpoint< connection_type, config > endpoint_type
Type of the endpoint component of this server.
config::transport_type transport_type
Type of the endpoint transport component.
connection< config > connection_type
Type of the connections this server will create.
connection_ptr get_connection()
Create and initialize a new connection.
void handle_accept(connection_ptr con, lib::error_code const &ec)
Handler callback for start_accept.
void start_accept()
Starts the server's async connection acceptance loop.
config::concurrency_type concurrency_type
Type of the endpoint concurrency component.
transport_con_type::ptr transport_con_ptr
Type of a shared pointer to the connection transport component.
@ operation_canceled
The requested operation was canceled.
Definition error.hpp:127
@ con_creation_failed
Connection creation attempted failed.
Definition error.hpp:99
Namespace for the WebSocket++ project.
Definition base64.hpp:41
static level const devel
Development messages (warning: very chatty)
Definition levels.hpp:141
static level const info
Definition levels.hpp:69
static level const rerror
Definition levels.hpp:75