client_endpoint.hpp
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/*
* Copyright (c) 2014, Peter Thorson. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the WebSocket++ Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL PETER THORSON BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#ifndef WEBSOCKETPP_CLIENT_ENDPOINT_HPP
#define WEBSOCKETPP_CLIENT_ENDPOINT_HPP
#include <websocketpp/endpoint.hpp>
#include <websocketpp/uri.hpp>
#include <websocketpp/logger/levels.hpp>
#include <websocketpp/common/system_error.hpp>
#include <string>
namespace websocketpp {
/// Client endpoint role based on the given config
/**
*
*/
template <typename config>
class client : public endpoint<connection<config>,config> {
public:
/// Type of this endpoint
typedef client<config> type;
/// Type of the endpoint concurrency component
typedef typename config::concurrency_type concurrency_type;
/// Type of the endpoint transport component
typedef typename config::transport_type transport_type;
/// Type of the connections this server will create
typedef connection<config> connection_type;
/// Type of a shared pointer to the connections this server will create
typedef typename connection_type::ptr connection_ptr;
/// Type of the connection transport component
typedef typename transport_type::transport_con_type transport_con_type;
/// Type of a shared pointer to the connection transport component
typedef typename transport_con_type::ptr transport_con_ptr;
/// Type of the endpoint component of this server
typedef endpoint<connection_type,config> endpoint_type;
friend class connection<config>;
explicit client() : endpoint_type(false)
{
endpoint_type::m_alog->write(log::alevel::devel, "client constructor");
}
/// Get a new connection
/**
* Creates and returns a pointer to a new connection to the given URI
* suitable for passing to connect(connection_ptr). This method allows
* applying connection specific settings before performing the opening
* handshake.
*
* @param [in] location URI to open the connection to as a uri_ptr
* @param [out] ec An status code indicating failure reasons, if any
*
* @return A connection_ptr to the new connection
*/
connection_ptr get_connection(uri_ptr location, lib::error_code & ec) {
if (location->get_secure() && !transport_type::is_secure()) {
ec = error::make_error_code(error::endpoint_not_secure);
return connection_ptr();
}
connection_ptr con = endpoint_type::create_connection();
if (!con) {
ec = error::make_error_code(error::con_creation_failed);
return con;
}
con->set_uri(location);
ec = lib::error_code();
return con;
}
/// Get a new connection (string version)
/**
* Creates and returns a pointer to a new connection to the given URI
* suitable for passing to connect(connection_ptr). This overload allows
* default construction of the uri_ptr from a standard string.
*
* @param [in] u URI to open the connection to as a string
* @param [out] ec An status code indicating failure reasons, if any
*
* @return A connection_ptr to the new connection
*/
connection_ptr get_connection(std::string const & u, lib::error_code & ec) {
uri_ptr location = lib::make_shared<uri>(u);
if (!location->get_valid()) {
ec = error::make_error_code(error::invalid_uri);
return connection_ptr();
}
return get_connection(location, ec);
}
/// Begin the connection process for the given connection
/**
* Initiates the opening connection handshake for connection con. Exact
* behavior depends on the underlying transport policy.
*
* @param con The connection to connect
*
* @return The pointer to the connection originally passed in.
*/
connection_ptr connect(connection_ptr con) {
// Ask transport to perform a connection
transport_type::async_connect(
lib::static_pointer_cast<transport_con_type>(con),
con->get_uri(),
lib::bind(
&type::handle_connect,
this,
con,
lib::placeholders::_1
)
);
return con;
}
private:
// handle_connect
void handle_connect(connection_ptr con, lib::error_code const & ec) {
if (ec) {
con->terminate(ec);
endpoint_type::m_elog->write(log::elevel::rerror,
"handle_connect error: "+ec.message());
} else {
endpoint_type::m_alog->write(log::alevel::connect,
"Successful connection");
con->start();
}
}
};
} // namespace websocketpp
#endif //WEBSOCKETPP_CLIENT_ENDPOINT_HPP