boost :: socket只收到一条消息

Question

I am writing simple server using boost::asio . Currently I have ready part of the server that receives data. But I have problem. Boost::asio receives only one message (my client program sends multiple number of messages).

After receiving message I must do something to be able to receive another message from the same client?

TCPConnection::TCPConnection(boost::asio::io_service& io_service)
                            : socket_(io_service),
                              socketActive(true)
{
    Traces() << "\n" << "LOG: TCPConnection::TCPConnection(boost::asio::io_service& io_service) : socket_(io_service)";
}

void TCPConnection::Start()
{
  Traces() << "\n" << "LOG: void TCPConnection::Start()";


  socket_.async_read_some(boost::asio::buffer(buffer_),
      boost::bind(&TCPConnection::HandleRead, shared_from_this(),
        boost::asio::placeholders::error,
        boost::asio::placeholders::bytes_transferred));
}

void TCPConnection::HandleRead(const boost::system::error_code& e,
    std::size_t bytes_transferred)
{
  Traces() << "\n" << "LOG: void TCPConnection::HandleRead(const boost::system::error_code& e, std::size_t bytes_transferred)";

  if (!e)
  {
    Traces() << "\n" << "LOG: New message";    

    Message tempMessage;
    tempMessage.CopyData((boost::shared_ptr<TCPConnection>)this, buffer_.data());
    messageQueue->PushBack(tempMessage);
  }
  else if (e != boost::asio::error::operation_aborted)
  {
    Traces() << "\n" << "LOG: Close connection";
    this->Stop();
  }
}

Answer 1

Every time you successfully read data, you need to request the io_service / socket to once again handle a data read. My usual solution looks like this:

void handle_read(asio::error_code ec, size_t bytes_read) {
    if(!ec) {
        /*Do Stuff*/
        socket.async_read(/*buffer*/, handle_read);
    } else {
        /*Error handling*/
    }
}

I haven't syntax checked the code I'm providing here, but you should get the right idea.