Dear Community, I've got an application that loads a .so using dlopen, dlsym, etc. It also starts up an IO service pool and manages them. The application implements a socket server, that starts a thread for each incoming connection. Inside each of the threads started, a .so function is called based on information received on the socket. Inside the function of the .so, I want to connect to a remote server using the IO service in the main program (that called the dlopen, etc.). It seems, however, that if I use an IO service not created inside the .so, the handle_connect never gets called by ASIO. Is anyone aware of this problem. I suppose I'm just doing something stupid w.r.t. shared object usage (maybe permissions, etc.). Or is the ASIO library not initialised inside the DLL? When I create an IO service pool inside the .so, everything works, but obviously this is not ideal as the pool starts threads that execute the run() method on the io service. Interesting thing is that I can actually pass a session object (from the socket server accept operation) from my main program to the .so function and have messages read and written on the socket. But when I try and create a new connection using the session's IO service (e.g. from a sock.get_io_service() call), then I never get the handle_connect. I've even tried: #pragma GCC visibility push(default) #include <boost/asio.hpp> #include <boost/bind.hpp> #include <boost/thread.hpp> #pragma GCC visibility pop around the boost includes, but no luck. Any help on this would be greatly appreciated. Kind regards, Derik Thirion