142 lines
3.5 KiB
C++
142 lines
3.5 KiB
C++
#include <network/socket_handler.hpp>
|
|
|
|
#include <utils/scopeguard.hpp>
|
|
#include <network/poller.hpp>
|
|
|
|
#include <logger/logger.hpp>
|
|
#include <sys/socket.h>
|
|
#include <sys/types.h>
|
|
#include <stdexcept>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <cstring>
|
|
#include <netdb.h>
|
|
#include <stdio.h>
|
|
|
|
#include <iostream>
|
|
|
|
SocketHandler::SocketHandler():
|
|
poller(nullptr),
|
|
connected(false)
|
|
{
|
|
if ((this->socket = ::socket(AF_INET, SOCK_STREAM, 0)) == -1)
|
|
throw std::runtime_error("Could not create socket");
|
|
int optval = 1;
|
|
if (::setsockopt(this->socket, SOL_SOCKET, SO_KEEPALIVE, &optval, sizeof(optval)) == -1)
|
|
log_warning("Failed to enable TCP keepalive on socket: " << strerror(errno));
|
|
}
|
|
|
|
std::pair<bool, std::string> SocketHandler::connect(const std::string& address, const std::string& port)
|
|
{
|
|
log_info("Trying to connect to " << address << ":" << port);
|
|
struct addrinfo hints;
|
|
memset(&hints, 0, sizeof(struct addrinfo));
|
|
hints.ai_flags = 0;
|
|
hints.ai_family = AF_INET;
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
hints.ai_protocol = 0;
|
|
|
|
struct addrinfo* addr_res;
|
|
const int res = ::getaddrinfo(address.c_str(), port.c_str(), &hints, &addr_res);
|
|
|
|
if (res != 0)
|
|
{
|
|
log_warning(std::string("getaddrinfo failed: ") + gai_strerror(res));
|
|
this->close();
|
|
return std::make_pair(false, gai_strerror(res));
|
|
}
|
|
|
|
// Make sure the alloced structure is always freed at the end of the
|
|
// function
|
|
utils::ScopeGuard sg([&addr_res](){ freeaddrinfo(addr_res); });
|
|
|
|
for (struct addrinfo* rp = addr_res; rp; rp = rp->ai_next)
|
|
{
|
|
if (::connect(this->socket, rp->ai_addr, rp->ai_addrlen) == 0)
|
|
{
|
|
log_info("Connection success.");
|
|
this->connected = true;
|
|
this->on_connected();
|
|
return std::make_pair(true, "");
|
|
}
|
|
log_info("Connection failed:" << strerror(errno));
|
|
}
|
|
log_error("All connection attempts failed.");
|
|
this->close();
|
|
return std::make_pair(false, "");
|
|
}
|
|
|
|
void SocketHandler::set_poller(Poller* poller)
|
|
{
|
|
this->poller = poller;
|
|
}
|
|
|
|
void SocketHandler::on_recv(const size_t nb)
|
|
{
|
|
char buf[4096];
|
|
|
|
ssize_t size = ::recv(this->socket, buf, nb, 0);
|
|
if (0 == size)
|
|
{
|
|
this->on_connection_close();
|
|
this->close();
|
|
}
|
|
else if (-1 == static_cast<ssize_t>(size))
|
|
{
|
|
log_warning("Error while reading from socket: " << strerror(errno));
|
|
this->on_connection_close();
|
|
this->close();
|
|
}
|
|
else
|
|
{
|
|
this->in_buf += std::string(buf, size);
|
|
this->parse_in_buffer();
|
|
}
|
|
}
|
|
|
|
void SocketHandler::on_send()
|
|
{
|
|
const ssize_t res = ::send(this->socket, this->out_buf.data(), this->out_buf.size(), MSG_NOSIGNAL);
|
|
if (res == -1)
|
|
{
|
|
log_error("send failed: " << strerror(errno));
|
|
this->on_connection_close();
|
|
this->close();
|
|
}
|
|
else
|
|
{
|
|
this->out_buf = this->out_buf.substr(res, std::string::npos);
|
|
if (this->out_buf.empty())
|
|
this->poller->stop_watching_send_events(this);
|
|
}
|
|
}
|
|
|
|
void SocketHandler::close()
|
|
{
|
|
this->connected = false;
|
|
this->poller->remove_socket_handler(this->get_socket());
|
|
::close(this->socket);
|
|
// recreate the socket for a potential future usage
|
|
if ((this->socket = ::socket(AF_INET, SOCK_STREAM, 0)) == -1)
|
|
throw std::runtime_error("Could not create socket");
|
|
}
|
|
|
|
socket_t SocketHandler::get_socket() const
|
|
{
|
|
return this->socket;
|
|
}
|
|
|
|
void SocketHandler::send_data(std::string&& data)
|
|
{
|
|
this->out_buf += std::move(data);
|
|
if (!this->out_buf.empty())
|
|
{
|
|
this->poller->watch_send_events(this);
|
|
}
|
|
}
|
|
|
|
bool SocketHandler::is_connected() const
|
|
{
|
|
return this->connected;
|
|
}
|