How to obtain local ip address

Question

I've managed to get clients' ip addresses from my server using codes below

OperationContext context = OperationContext.Current;
MessageProperties prop = context.IncomingMessageProperties;
RemoteEndpointMessageProperty endpoint = prop[RemoteEndpointMessageProperty.Name] as RemoteEndpointMessageProperty;
string ipaddress = endpoint.Address;

However, if clients are under the same network, all the ip addresses are public ip address of the network.

Is there a way to get local ip addresses of each client if they are under the same AP? or just simply, is there a easier way to distinguish client from one another?

afaik you can't figure the private IP of a host unless you explicitly ask for it — Julián Urbano, Dec 02 '13 at 04:28

score 0 · Answer 1 · edited Dec 02 '13 at 07:26

0

try this

HttpRequest currentRequest = HttpContext.Current.Request;
string ipAddress = currentRequest.ServerVariables["HTTP_X_FORWARDED_FOR"];

if (ipAddress == null || ipAddress.ToLower() == "unknown")
    ipAddress = currentRequest.ServerVariables["REMOTE_ADDR"];

return ipAddress;

edited Dec 02 '13 at 07:26

John Saunders

160,644
26
247
397

answered Dec 02 '13 at 04:31

Thilipan Croose

79
3

Thanks for your comment, but it doesn't help. ipAddress returns public ip address instead of local ip address. – SeungHun Cho Dec 02 '13 at 04:49

score 0 · Answer 2 · edited May 23 '17 at 10:10

0

Because of network address translation it is not always possible to identify clients by unique client addresses see How to get a user's client IP address in ASP.NET?

edited May 23 '17 at 10:10

Community

1
1

answered Dec 02 '13 at 04:34

Mike Beeler

4,081
2
29
44

score 0 · Answer 3 · answered Feb 04 '15 at 06:34

0

You can try webrtc's in built feature to connect to STUN server https://diafygi.github.io/webrtc-ips/

answered Feb 04 '15 at 06:34

Neil

5,919
15
58
85

How to obtain local ip address

3 Answers3