I have a simple TCP multiprocess server...inside each child server(each of one handles distincted connection), I call a list of operation...suppose the following: socket.async_read_some(....); //receive a client request socket.async_write_some(...); //respond to client request socket.async_write_some(...); //independently of the client request, send something to the client Have I use strand,or this situation doesn't cause problems? I don't use thread... thanks!!! ________________________________ Da: Rutger ter Borg <rutger@terborg.net> A: boost-users@lists.boost.org Inviato: Mer 9 marzo 2011, 11:42:41 Oggetto: Re: [Boost-users] boost concurrent write/read On 03/09/2011 11:22 AM, Marco Piacentini wrote:
Hi guys...a simple question.. what happen if there are concurrent write/write(for example async_write_some) or write/read(for example async_write_some and async_read_some) operation on the same socket?I have handle this problem or it is automatically handled by boost functions? And if I have to send a lot of data, to avoid congestion problem, I need a buffer?
thank you...
You have to make sure that no concurrent calls can occur to member functions of the same socket class. This may be achieved by serializing your read/writes/read handlers/write handlers through a strand. In case of large buffers, Asio may split up an async_write() operation into several async_write_some operations (often referred to as "composed operations"). HtH, Cheers, Rutger _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users