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?

Answer 1

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;

Answer 2

由于网络地址转换，并非总是可以通过唯一的客户端地址来识别客户端，请参见如何在ASP.NET中获取用户的客户端IP地址？

Answer 3

您可以尝试使用webrtc的内置功能来连接到STUN服务器https://diafygi.github.io/webrtc-ips/