[Boost-users] [asio] Detecting tcp peer disconnection

Hello, This issue has previously been discussed in details, and IIRC, the conclusion was that the reliable method to detect peer disconnection is to try reading from the socket. Now I encountered strange situation: I connect tcp socket to some proprietry server, then pull out the ethernet cable from the server side. If async_read_some was in progress - nothing happens, no handler is called. If I start an additional async_read_some - nothing happens. I tried to set SO_KEEPALIVE option and waited - nothing happened. My machine runs WinXPSP3, so async_read_some is delegated to WSARecv(). I'd appreciate any idea on the subj. Thanks.