Hi all, I am hoping someone who is an expert on Boost.Asio can help me by analyzing my modifications to the chat_server example. I have adjusted the example to closely resemble an application I am developing that uses the example as its inspiration. Important differences between my version and the official version include: 1) chat_room supports clearing the set of participants, and the destructor for participants closes the corresponding socket 2) chat_server supports a start and a stop operation from another thread 3) The io_service is managed by the chat_server object instead of the main function I would like to know if my usage is correct, particularly for the start/stop operations. I would like the stop operation to put the chat_server into the same state it was in on construction, so that the start operation semantics are identical whether the chat_server is newly constructed or has already been stopped. I am concerned about memory leaks or uncaught exceptions, and anything else that a seasoned user of the library would notice that I may have missed. The code can be found here: http://pastie.org/412088 Thanks in advance! Tres -- Tres Spicher Boulder Labs tres@boulderlabs.com