tim::socket::manager Class Reference

#include "timemory/utility/socket.hpp"

Collaboration diagram for tim::socket::manager:

Public Types
using	socket_map_t = std::unordered_map< std::string, socket_t >
using	listen_info_t = std::pair< int64_t, int64_t >

Public Member Functions
	manager ()=default
	~manager ()=default
	manager (const manager &)=default
	manager (manager &&)=default
manager &	operator= (const manager &)=default
manager &	operator= (manager &&)=default
template<typename CallbackT >
auto	listen (const std::string &_channel_name, int _port, CallbackT &&callback, int64_t _max_packets=0) -> decltype(callback(_channel_name), listen_info_t{})
	listen for data on a socket. Returns a pair of the number of packets received and the number of bytes received. If both are -1, connecting to socket failed. More...
bool	send (const std::string &_channel_name, const std::string &_data)
bool	connect (const std::string &_channel_name, const std::string &_ip, int _port)
bool	close (const std::string &_channel_name)

Static Public Attributes
static constexpr int	buffer_size = 4096

Detailed Description

Definition at line 61 of file socket.hpp.

Member Typedef Documentation

listen_info_t

using tim::socket::manager::listen_info_t = std::pair<int64_t, int64_t>

Definition at line 66 of file socket.hpp.

socket_map_t

using tim::socket::manager::socket_map_t = std::unordered_map<std::string, socket_t>

Definition at line 65 of file socket.hpp.

Constructor & Destructor Documentation

manager() [1/3]

tim::socket::manager::manager ( )

default

~manager()

tim::socket::manager::~manager ( )

default

manager() [2/3]

tim::socket::manager::manager ( const manager &  )

default

manager() [3/3]

tim::socket::manager::manager ( manager &&  )

default

Member Function Documentation

close()

bool tim::socket::manager::close ( const std::string &  _channel_name )

inline

Definition at line 222 of file socket.hpp.

    {
        if(m_client_sockets.find(_channel_name) != m_client_sockets.end())
        {
            socket_t s = m_client_sockets.at(_channel_name);
            tim::socket::manager::close(s);
            tim::socket::manager::quit();
            return true;
        }
        return false;
    }

References close().

Referenced by close(), and connect().

connect()

bool tim::socket::manager::connect ( const std::string &  _channel_name, const std::string &  _ip, int  _port  )

inline

Definition at line 189 of file socket.hpp.

    {
        if(tim::socket::manager::init() != 0)
        {
            std::cerr << "Can't start socket!" << std::endl;
            return false;
        }
 
        socket_t _sock = ::socket(AF_INET, SOCK_STREAM, 0);
        if(_sock == invalid_socket)
        {
            std::cerr << "Can't create socket!" << std::endl;
            tim::socket::manager::quit();
            return false;
        }
 
        sockaddr_in _hint;
        _hint.sin_family = AF_INET;
        _hint.sin_port   = htons(_port);
        inet_pton(AF_INET, _ip.c_str(), &_hint.sin_addr);
 
        int _conn_result = ::connect(_sock, (sockaddr*) &_hint, sizeof(_hint));
        if(_conn_result == socket_error)
        {
            std::cerr << "Can't connect to server!" << std::endl;
            tim::socket::manager::close(_sock);
            tim::socket::manager::quit();
            return false;
        }
        m_client_sockets[_channel_name] = _sock;
        return true;
    }

References close(), and connect().

Referenced by connect().

listen()

template<typename CallbackT >

auto tim::socket::manager::listen ( const std::string &  _channel_name, int  _port, CallbackT &&  callback, int64_t  _max_packets = 0  ) -> decltype(callback(_channel_name), listen_info_t{})

inline

listen for data on a socket. Returns a pair of the number of packets received and the number of bytes received. If both are -1, connecting to socket failed.

Definition at line 81 of file socket.hpp.

                                                          {})
    {
        if(tim::socket::manager::init() != 0)
        {
            std::cerr << "Can't start socket!" << std::endl;
            return { -1, -1 };
        }
 
        socket_t _listening = ::socket(AF_INET, SOCK_STREAM, 0);
        if(_listening == invalid_socket)
        {
            std::cerr << "Can't create a socket!" << std::endl;
            return { -1, -1 };
        }
 
        sockaddr_in _hint;
        _hint.sin_family = AF_INET;
        _hint.sin_port   = htons(_port);
#if defined(TIMEMORY_WINDOWS)
        _hint.sin_addr.S_un.S_addr = INADDR_ANY;
#else
        _hint.sin_addr.s_addr     = INADDR_ANY;
#endif
 
        ::bind(_listening, (sockaddr*) &_hint, sizeof(_hint));
        ::listen(_listening, SOMAXCONN);
 
        sockaddr_in _client;
#if defined(TIMEMORY_WINDOWS)
        int _client_size = sizeof(_client);
#else
        unsigned int _client_size = sizeof(_client);
#endif
        socket_t _client_socket = accept(_listening, (sockaddr*) &_client, &_client_size);
        m_server_sockets[_channel_name] = _client_socket;
        char _host[NI_MAXHOST];
        char _service[NI_MAXSERV];
 
        memset(_host, 0, NI_MAXHOST);
        memset(_service, 0, NI_MAXSERV);
        if(getnameinfo((sockaddr*) &_client, sizeof(_client), _host, NI_MAXHOST, _service,
                       NI_MAXSERV, 0) == 0)
        {
            std::cout << _host << " connected on port " << _service << std::endl;
        }
        else
        {
            inet_ntop(AF_INET, &_client.sin_addr, _host, NI_MAXHOST);
            std::cout << _host << " connected on port " << ntohs(_client.sin_port)
                      << std::endl;
        }
        tim::socket::manager::close(_listening);
        char          _buff[buffer_size];
        listen_info_t _nrecv = { 0, 0 };
        while(true)
        {
            memset(_buff, 0, buffer_size);
 
            int _bytes_recv = ::recv(_client_socket, _buff, buffer_size, 0);
 
            // exit out of receiving
            if(_bytes_recv == socket_error)
            {
                std::cerr << "Error in recv(). Quitting" << std::endl;
                break;
            }
 
            if(_bytes_recv > 0)
            {
                _nrecv.first += 1;
                _nrecv.second += _bytes_recv;
                callback(std::string(_buff, 0, _bytes_recv));
                if(_max_packets > 0 && _nrecv.first >= _max_packets)
                {
                    std::cerr << "Maximum number of packages received: " << _max_packets
                              << ". Quitting" << std::endl;
                    break;
                }
            }
            else
            {
                break;
            }
        }
 
        tim::socket::manager::close(_client_socket);
        tim::socket::manager::quit();
        return _nrecv;
    }

operator=() [1/2]

manager & tim::socket::manager::operator= ( const manager &  )

default

operator=() [2/2]

manager & tim::socket::manager::operator= ( manager &&  )

default

send()

bool tim::socket::manager::send ( const std::string &  _channel_name, const std::string &  _data  )

inline

Definition at line 173 of file socket.hpp.

    {
        if(m_client_sockets.find(_channel_name) != m_client_sockets.end())
        {
            socket_t _sock        = m_client_sockets.at(_channel_name);
            int      _send_result = ::send(_sock, _data.c_str(), _data.size() + 1, 0);
            if(_send_result == socket_error)
            {
                std::cerr << "Can't create socket!" << std::endl;
                return false;
            }
            return true;
        }
        return false;
    }

References send().

Referenced by send().

Member Data Documentation

buffer_size

constexpr int tim::socket::manager::buffer_size = 4096

staticconstexpr

Definition at line 64 of file socket.hpp.

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The documentation for this class was generated from the following file:

• timemory/utility/socket.hpp