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This includes checking the existence of the route to the destination according to the system's routing table and setting the local endpoint accordingly.
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IPEndPoint endPoint = socket.LocalEndPoint as IPEndPoint Ĭonnect on a UDP socket has the following effect: it sets the destination for Send/ Recv, discards all packets from other addresses, and - which is what we use - transfers the socket into "connected" state, settings its appropriate fields. Using (Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, 0)) Connect a UDP socket and read its local endpoint: string localIP There is a more accurate way when there are multi ip addresses available on local machine. How can I see if my computer is connected to a network with C# and if it is then to get the LAN IP address. If I am not connected to a network and I am connected to the internet directly via a modem with no router then I would like to get an error. With this example I get several IP addresses, but I'm only interested in getting the one that the router assigns to the computer running the program: the IP that I would give to someone if he wishes to access a shared folder in my computer for instance. IPHostEntry ipEntry = Dns.GetHostEntry(strHostName) Ĭonsole.WriteLine("IP Address ", i, addr.ToString()) Then using host name, get the IP address list.
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First get the host name of local machine.Ĭonsole.WriteLine("Local Machine's Host Name: " + strHostName) And a lot of them look like this example: String strHostName = string.Empty
Remove self assigned ip address mac ethernet how to#
In the internet there are several places that show you how to get an IP address.