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.NET Forum / .NET Framework / New Users / October 2007Using a Broadcast message on an intranet
Hi: I need a way to make sure that only one instance of a program is running on a particular intranet. I thought that some kind of Broadcast message might do the trick, or maybe a UDP query. I'm using a WinForms application on .NET 2.0 Can anyone help me with this? TIA, Martin. Hello, Martin! UDP scenario has some drawbacks. UDP broadcasts may not be allowed between intranets. OTOH if there must be one app per intranet then broadcasts can do the job. Also, instead of UDP broadcast you should use multicast. -- With best regards, Vadym Stetsiak. Blog: http://vadmyst.blogspot.com You wrote on Wed, 03 Oct 2007 17:56:05 +0200: MH> Hi: MH> I need a way to make sure that only one instance of a program is MH> running on a particular intranet. I thought that some kind of MH> Broadcast message might do the trick, or maybe a UDP query. I'm MH> using a WinForms application on .NET 2.0 MH> Can anyone help me with this? MH> TIA, MH> Martin. Vadym: Do you have an example of using multicast I can see? TIA, Martin. Vadym Stetsiak escribió: > Hello, Martin! > [quoted text clipped - 21 lines] > MH> TIA, > MH> Martin. Hello, Martin! Have a look at http://www.codeproject.com/cs/internet/multicast.asp -- With best regards, Vadym Stetsiak. Blog: http://vadmyst.blogspot.com You wrote on Thu, 04 Oct 2007 11:55:19 +0200: MH> Vadym: MH> Do you have an example of using multicast I can see? MH> TIA, MH> Martin. MH> Vadym Stetsiak escribió: >> Hello, Martin! >> UDP scenario has some drawbacks. UDP broadcasts may not be allowed >> between intranets. >> OTOH if there must be one app per intranet then broadcasts can do the >> job. >> Also, instead of UDP broadcast you should use multicast. >> -- >> With best regards, Vadym Stetsiak. >> Blog: http://vadmyst.blogspot.com >> You wrote on Wed, 03 Oct 2007 17:56:05 +0200: MH>>> Hi: MH>>> I need a way to make sure that only one instance of a program is MH>>> running on a particular intranet. I thought that some kind of MH>>> Broadcast message might do the trick, or maybe a UDP query. I'm MH>>> using a WinForms application on .NET 2.0 MH>>> Can anyone help me with this? MH>>> TIA, MH>>> Martin. Vadym: Perfect, thanks for your help. Regards, Martin. Vadym Stetsiak escribió: > Hello, Martin! > [quoted text clipped - 41 lines] > MH>>> TIA, > MH>>> Martin. 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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