Set broadcast source ip-address

[Giovanni]

Hello community,

I'm currently writing a broadcast sender class in C# .NET (using .NET Framework 3.5).

On my computer there are more than one local network interface and if I send a broadcast, the UdpClient class choose "randomly" a source ip-address from a network interface.

Does anybody knows a possibility to set a specific sender ip-address?

Thank you in advance!

Greets from Switzerland,
Giovanni

IPAddress GroupAddress = IPAddress.Broadcast;
int GroupPort = 11108;
UdpClient sender = new UdpClient();
IPEndPoint groupEP = new IPEndPoint(GroupAddress, GroupPort);
byte[] bytes = Encoding.ASCII.GetBytes("Hello network.. (da08frup3)");
sender.Send(bytes, bytes.Length, groupEP);
sender.Close();
 

inspiration by: http://social.msdn.microsoft.com/forums/en-US/netfxnetcom/thread/16b686d5-7c07-440f-9411-d311f3fb4a2f/

[Plater]

I think with UdpClient, you can set your LocalEndPoint maybe?

[Giovanni]

I think with UdpClient, you can set your LocalEndPoint maybe?

That was my first idea, but the property is read-only :( (Note: the LocalEndPoint property is located in the class Socket).

I think the solution must be in the socket layer, but I couldn't see it :(

[Plater]

Did you see this constructor type:
UdpClient(IPEndPoint localEP)

So you could say:
UdpClient u = new UdpClient(myLocalEP)

See if that works?

[Giovanni]

Did you see this constructor type:
UdpClient(IPEndPoint localEP)

So you could say:
UdpClient u = new UdpClient(myLocalEP)

See if that works?

Dear Plater,

Thank you for your help, now it works!! I was so fixed to find the solution in the Socket class, that I not looked exactly in the UdpClient class..

Sorry for this newbie question..

Sincerelly yours,
Giovanni