Boost Community, I've created a basic class that wrapped the boost asio framework receive/send functionality. My wrapper class gave the packet buffer to whatever processing function that it was created with and when the function was done sent any buffers it was given. This let me create classes that processed data without any knowledge of the transport layer. This concept has worked well since the asio sockets have an async_receive and async_send. I was able to setup all of my classes and then call io_service.run() to get everything going. I now have to receive data from a customer dll and they only support polling. Is there a way to add to the io_service a specific method to call once the io_service is running. I've included the ReceiveProcessSend.hpp with a comment above the two async_receive calls I need to replace. Also, below is a very basic example of how I setup classes that I pass into the ReceiveProcessSend. Any help on how to add calling methods to the io_service would be really appreciated. Ryan class DoSomeProcessing { private: typedef std::vector<unsigned char> t_ucvector; typedef boost::shared_ptr t_boostVector; typedef std::list t_boostList; public: t_boostList const processMessage(t_boostVector message, t_ucvector::size_type messageSize) { t_boostList outputList; //Do processing here and create output buffer. return outputList; } }; int main(int argc, char * argv[]) { DoSomeProcessing myProcess; ReceiveProcessSend::Arguments myArguments; boost::asio::io_service io_service; ReceiveProcessSend rps( io_service, boost::bind(&DoSomeProcessing::processMessage, &myProcess, _1, _2), myArguments); io_service.run(); return 0; }