void proxy::do_send(const std::string& command, const_buffer buffer,
result_handler handler)
{
if (stopped())
{
handler(error::channel_stopped);
return;
}
LOG_DEBUG(LOG_NETWORK)
<< "Sending " << command << " to [" << authority() << "] ("
<< buffer.size() << " bytes)";
// Critical Section (protect socket)
///////////////////////////////////////////////////////////////////////////
// The socket is locked until async_write returns.
const auto socket = socket_->get_socket();
// The shared buffer is kept in scope until the handler is invoked.
using namespace boost::asio;
async_write(socket->get(), buffer,
std::bind(&proxy::handle_send,
shared_from_this(), _1, buffer, handler));
///////////////////////////////////////////////////////////////////////////
}
void proxy::handle_send(const boost_code& ec, const_buffer buffer,
result_handler handler)
{
const auto error = code(error::boost_to_error_code(ec));
if (error)
LOG_DEBUG(LOG_NETWORK)
<< "Failure sending " << buffer.size() << " byte message to ["
<< authority() << "] " << error.message();
handler(error);
}
void proxy::handle_send(const boost_code& ec, const_buffer buffer,
/*scope_lock::ptr lock,*/ result_handler handler)
{
////lock = nullptr;
//////\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
const auto error = code(error::boost_to_error_code(ec));
if (error)
log::debug(LOG_NETWORK)
<< "Failure sending " << buffer.size() << " byte message to ["
<< authority() << "] " << error.message();
handler(error);
}
////// vvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvvv
////// THIS REQUIRES AT LEAST TWO NETWORK THREADS TO PREVENT THREAD STARVATION.
////// ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
////// The send subscriber pushes queued writes to the writer instead of having
////// writer pull them from a passive queue. This is less thread-efficient but it
////// allows us to reuse the subscriber and facilitates bypass of subscriber
////// queuing for large message types such as blocks, as we do with reads.
bool proxy::do_send(const code&, const std::string& command,
const_buffer buffer, result_handler handler)
{
if (stopped())
{
handler(error::channel_stopped);
return false;
}
////if (ec)
////{
//// log::debug(LOG_NETWORK)
//// << "Send dequeue failure [" << authority() << "] " << ec.message();
//// handler(ec);
//// stop(ec);
//// return false;
////}
log::debug(LOG_NETWORK)
<< "Sending " << command << " to [" << authority() << "] ("
<< buffer.size() << " bytes)";
////// Critical Section (protect writer)
//////\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\
////// The lock must be held until the handler is invoked.
////const auto lock = std::make_shared<scope_lock>(mutex_);
// Critical Section (protect socket)
///////////////////////////////////////////////////////////////////////////
// The socket is locked until async_write returns.
const auto socket = socket_->get_socket();
// The shared buffer must be kept in scope until the handler is invoked.
using namespace boost::asio;
async_write(socket->get(), buffer,
std::bind(&proxy::handle_send,
shared_from_this(), _1, buffer, /*lock,*/ handler));
return true;
///////////////////////////////////////////////////////////////////////////
}