Binding an IP address just works for the first time

Question

I want to make a web request from one of available IP addresses on server so I use this class:

public class UseIP
{
    public string IP { get; private set;          


        

Answer 1

Problem may be with the delegate getting reset on each new request. Try below:

//servicePoint.BindIPEndPointDelegate = null; // Clears all delegates first, for testing
servicePoint.BindIPEndPointDelegate += delegate
    {
        var address = IPAddress.Parse(this.IP);
        return new IPEndPoint(address, 0);
    };

Also as far as I know, the endpoints are cached so even clearing the delegate may not work in some cases and they may get reset regardless. You may unload/reload the app domain as the worst case scenario.