When you do boost::asio::buffer( str ), you don't copy content of the string but just create thin wpapper above data of string.So I’m using a Presonus AudioBox 22VSL as my ASIO interface on a Win 7 machine. And move the socket_.close() line from respond function to handle_write. You can replace the stack allocated std::string str variable by some member variable in the class that agregates _socket.
#Audiobox error initializing asio buffers code#
So, to get your code work you have to ensure that std::string str is still exist and _socket not closed until the handle_write callback. And you can release resources then freely. When the whole (possible big) I/O operation completes the Asio informs you using specified callback. And it's Asio decision when to execute your job (but of course it tries to do it as faster as possible =)). To better understand how it works, consider that every time you doing some boost::asio::async_ you are posting the pointer to data for operation and pointer to callback function to the job queue.
#Audiobox error initializing asio buffers driver#
If that brings no joy, change the Audio Driver Type from ASIO to MME under 'Options Preferences. The first thing that Id try to see if it makes a difference is to start BIAB by right-clicking on the shortcut and selecting 'Run as administrator'. The buffer has to be alive and socket opened during the whole transmition time (from asio::async_write call to handle_write callback is to be called by Asio io_service dispatcher. If I unhook the audiobox the sample functionality returns and plays through the laptop speakers. Your problem is all about lifetime of buffer and socket. So, I am guessing, not the entire string is written into the streambuf?Īlternatively, I would love to know what is the most elegant way to write using boost::asio::async_write, data that is larger than 65536 bytes!Īlex, you understand asio async operations wrong. However, although I get no errors, not the entire data is sent! I've tried using: boost::asio::streambuf _out_buffer Īs a class member, and then made method respond: std::ostream os( &_out_buffer ) So I am left with only one choice: To use a boost::asio::streambuf Typename Buffers::const_iterator begin_remainder_ usr/include/boost/asio/detail/consuming_buffers.hpp:261:36: error: no type named ‘const_iterator’ in ‘class boost::asio::mutable_buffer’ It seems like I can't use a boost::asio::mutable_buffer, but only a boost::asio::streambufįurthermore and more importantly, a second error complains about the actual boost::asio::async_write being passed a boost::asio::const_buffer OR boost::asio::mutable_buffer: /usr/include/boost/asio/detail/consuming_buffers.hpp:164:5: error: no type named ‘const_iterator’ in ‘class boost::asio::mutable_buffer’ Goes out of scope before the operation has a chance to finish sending all the data. Searching around Stack Overflow, I discovered that my problem is that the buffer created by the method: boost::asio::buffer( str )
Implying that the maximum buffer size (65536) was not enough to write the data? I know the problem is that boost::asio::async_write does not complete the writing operation, because the output from the above operations is: Reply bytesize: 354275 Std::cerr << "handle_write Bytes sent: " << bytes_transferred << std::endl Std::cerr << "handle_write Error: " << ssage() << std::endl Void handle_write ( const boost::system::error_code & error, size_t bytes_transferred ) Std::cout << "Reply bytesize " << bytes << std::endl īoost::asio::placeholders::bytes_transferred Std::size_t bytes = str.size() * sizeof( std::string::value_type ) If ( auto m = handleNewMessage( _message ) ) I have a very simple method, with the purpose of responding to an incoming message, and then closing the connection: void respond ( const std::string message )Ĭontroller & controller = Controller::Singleton()
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