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.NET Forum / .NET Framework / New Users / May 2004WSAAsyncSelect in .Net framework
hello all, is thery any equivalent in .Net Framework of WSAAsyncSelect win32 api function ? I want my application window being notifyed about network events... (asyncroniously) or maybe another way exists ? -- Vladimir Scherbina, Ukraine, Kiev. hi, No! dotNet framework losts all of WSAXXX api functions. However, my SocketPro has it.  SignatureYuancai (Charlie) Ye Fast and securely accessing all of remote data sources anywhere with SocketPro using batch/queue, asynchrony and parallel computation See 30 well-tested and real OLEDB examples RDB, a tool for fast and securely accessing remote databases with dial-up, cable, DSL and wireless modems anywhere www.udaparts.com > hello all, > [quoted text clipped - 8 lines] > Vladimir Scherbina, > Ukraine, Kiev. Why not do Socket.Select in another thread and report back to application window using one of many options (push/pull, etc) Think you do pretty much what you want via some design work. Post back if other questions of this. Cheers! SignatureWilliam Stacey, MVP > hello all, > [quoted text clipped - 8 lines] > Vladimir Scherbina, > Ukraine, Kiev. hello William, sure, Socket.Select is another way of solving my problem, but imagine, if i have for example 1000 cleints and 1 server, each client is accepted by server. server has 1000 sockets, in the way you propose server should call Select for each socket at some time on a loop... but this architecture is looking strange (as for me) i am wrong ? -- Vladimir Scherbina, Ukraine, Kiev. > Why not do Socket.Select in another thread and report back to application > window using one of many options (push/pull, etc) Think you do pretty much [quoted text clipped - 3 lines] > -- > William Stacey, MVP Now you say 1000 :-) IIRC, when your talking about the Async methods (Begin..), your talking Thread pool. I am wondering if you will have fairness issues here or other issues relating to the thread pool. Not sure. If you have a dedicated machine you can probably get 700-800 threads without a problem and simplify your implementation dramatically. I know it sounds crazy, but had a long talk with the Indy .Net guy about this and he was right and it works. The cpu will handle fairness via normal thread scheduling. You may also want to checkout the Indy .Net library for socket stuff. They also can use Fibers to allow more connections. SignatureWilliam Stacey, MVP > hello William, > sure, Socket.Select is another way of solving my problem, but imagine, if i [quoted text clipped - 17 lines] > > -- > > William Stacey, MVP Look at all the "Begin..." and "End..." functions in sockets, for example BeginConnect, BeginAccept, BeginSend, BeginReceive, etc, these are all async functions. You won't get the socket close directly, but if you issue or have an outstanding read/write, etc, you will realize that in the handler routine. > hello all, > [quoted text clipped - 8 lines] > Vladimir Scherbina, > Ukraine, Kiev. thx, i lave looked and i use them -- Vladimir Scherbina, Ukraine, Kiev. > Look at all the "Begin..." and "End..." functions in sockets, for example > BeginConnect, BeginAccept, BeginSend, BeginReceive, etc, these are all async [quoted text clipped - 14 lines] > > Vladimir Scherbina, > > Ukraine, Kiev. Please, check also your machine's time settings. SignatureTeemu Keiski MCP, Microsoft MVP (ASP.NET), AspInsiders member ASP.NET Forum Moderator, AspAlliance Columnist http://blogs.aspadvice.com/joteke thx, i lave looked and i use them -- Vladimir Scherbina, Ukraine, Kiev. > Look at all the "Begin..." and "End..." functions in sockets, for example > BeginConnect, BeginAccept, BeginSend, BeginReceive, etc, these are all async > functions. You won't get the socket close directly, but if you issue or have > an outstanding read/write, etc, you will realize that in the handler > routine. [quoted text clipped - 11 lines] > > Vladimir Scherbina, > > Ukraine, Kiev. 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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