Hello, I've implemented support for Windows named pipes in Asio. Windows named pipes are created with CreateFile, and you can use WriteFile/ReadFile with overlapped I/O to read from and/or write to them. It uses win_iocp_handle_service (just like serial_port_service), so it's really simple code. I've attached the implementation to this e-mail (hoping the attachments will get through) so that you guys can import it into Boost if you find it worthwhile (feel free to license it under the Boost license). Note, though, that it needs to be "Boostfied" because I had to adhere to the coding conventions of the current project I was working on (this includes variable naming conventions, code style conventions, namespacing, and the separation of named_pipe into basic_named_pipe and named_pipe, and so on). And since this is my first interaction with Boost "internals", I won't be surprised if you guys find rookie mistakes in it. I've tested this implementation under Vista and Windows 7, using Boost 1.40 (but 1.41 should work just fine too) and VC++ 2008 Express. I used pipes in message mode, but I believe both message and stream modes will work. Regards,