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.NET Forum / .NET Framework / New Users / July 2005Socket.Connected
Hi there, I'm playing with Socket and Telnet (via hyperterminal). I'm trying to display a message when the client disconnect, that is when hyperterminal either close the connection, or is closed, on the client side. But, Socket.Connected always seems to return true, even though I do as in the doc and do a 0 byte Send before checking its value. Is there another way to know if a Socket is still connected to a client? Etienne Fortin > Hi there, > I'm playing with Socket and Telnet (via hyperterminal). I'm trying to [quoted text clipped - 4 lines] > > Is there another way to know if a Socket is still connected to a client? Try to do a receive on the socket. It normally returns the number of bytes received.. but when the connection has been closed it will return 0 bytes. hth, Max Thanks for your answer. It is a probably a good way to know if a connection is dead. But what about the situation when the client didn't send any data for a certain period of time, but it is still connected and alive? Receive() will return zero bytes. Etienne > > Hi there, > > I'm playing with Socket and Telnet (via hyperterminal). I'm trying to [quoted text clipped - 10 lines] > hth, > Max > It is a probably a good way to know if a connection is dead. But what > about the situation when the client didn't send any data for a certain > period of time, but it is still connected and alive? Receive() will return > zero bytes. If you are using blocking sockets, Receive will not return 0 bytes unless the client disconnected. If you call Receive but there is no data available, Receive will block and wait until there is data available or until the client disconnects (in which case it would return 0 bytes). Max Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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