static void set_socket_buffer_size(SocketType &socket, std::size_t buffer_size)
{
if (buffer_size == 0)
return;
BufferSizeOption option(buffer_size);
boost::system::error_code ec;
socket.set_option(option, ec);
if (ec)
{
log_warning("request for socket buffer size %s failed (%s): refer to documentation for details on increasing buffer size",
buffer_size, ec.message());
}
else
{
// Linux silently clips to the maximum allowed size
BufferSizeOption actual;
socket.get_option(actual);
if (std::size_t(actual.value()) < buffer_size)
{
log_warning("requested socket buffer size %d but only received %d: refer to documentation for details on increasing buffer size",
buffer_size, actual.value());
}
}
}
void Connector::pool_connect(
SocketType & peer,
boost::system::error_code & ec)
{
fd_set writefds;
fd_set exceptfds;
timeval timeout;
FD_ZERO(&writefds);
FD_ZERO(&exceptfds);
typename SocketType::native_type fd = peer.native();
FD_SET(fd, &writefds);
FD_SET(fd, &exceptfds);
timeval * ptimeout = &timeout;
if (non_block_) {
timeout.tv_sec = 0;
timeout.tv_usec = 0;
} else if (time_out_) {
timeout.tv_sec = time_out_ / 1000;
timeout.tv_usec = (time_out_ % 1000) * 1000;
} else {
ptimeout = NULL;
}
int ret = boost::asio::detail::socket_ops::select(
fd + 1, NULL, &writefds, &exceptfds, ptimeout, ec);
if (ret > 0) {
boost::asio::socket_base::error err;
peer.get_option(err);
ec = boost::asio::error::basic_errors(err.value());
} else if (ret == 0) {
if (non_block_) {
ec = boost::asio::error::would_block;
} else {
ec = boost::asio::error::timed_out;
}
}
}
