void tcp_socket::enable_keep_alives(const fc::microseconds& interval)
{
if (interval.count())
{
boost::asio::socket_base::keep_alive option(true);
my->_sock.set_option(option);
#if defined _WIN32 || defined WIN32 || defined OS_WIN64 || defined _WIN64 || defined WIN64 || defined WINNT
struct tcp_keepalive keepalive_settings;
keepalive_settings.onoff = 1;
keepalive_settings.keepalivetime = (ULONG)(interval.count() / fc::milliseconds(1).count());
keepalive_settings.keepaliveinterval = (ULONG)(interval.count() / fc::milliseconds(1).count());
DWORD dwBytesRet = 0;
if (WSAIoctl(my->_sock.native(), SIO_KEEPALIVE_VALS, &keepalive_settings, sizeof(keepalive_settings),
NULL, 0, &dwBytesRet, NULL, NULL) == SOCKET_ERROR)
wlog("Error setting TCP keepalive values");
#elif !defined(__clang__) || (__clang_major__ >= 6)
// This should work for modern Linuxes and for OSX >= Mountain Lion
int timeout_sec = interval.count() / fc::seconds(1).count();
if (setsockopt(my->_sock.native(), IPPROTO_TCP,
#if defined( __APPLE__ )
TCP_KEEPALIVE,
#else
TCP_KEEPIDLE,
#endif
(char*)&timeout_sec, sizeof(timeout_sec)) < 0)
wlog("Error setting TCP keepalive idle time");
# if !defined(__APPLE__) || defined(TCP_KEEPINTVL) // TCP_KEEPINTVL not defined before 10.9
if (setsockopt(my->_sock.native(), IPPROTO_TCP, TCP_KEEPINTVL,
(char*)&timeout_sec, sizeof(timeout_sec)) < 0)
wlog("Error setting TCP keepalive interval");
# endif // !__APPLE__ || TCP_KEEPINTVL
#endif // !WIN32
}
else
{
boost::asio::socket_base::keep_alive option(false);
my->_sock.set_option(option);
}
}
inline void pack( Stream& s, const fc::microseconds& usec )
{
uint64_t usec_as_int64 = usec.count();
s.write( (const char*)&usec_as_int64, sizeof(usec_as_int64) );
}