API MvxSockNx64 address to connect

Hello everybody,

I'm begin a devlopment C# and I would like use MvxSockNx64. But when i try to connect with the function MvxSockConnect, have an error message : Error No 7.
I supposes it's my IP address is wrong but i don't know where i can find the good one.

this my simple code:

    public static void CallAPIfromMVXSock(){

            SERVER_ID sid = new SERVER_ID();

            uint rc;
            Console.Write("Start console API");

            ///m3api-rest/execute/
            rc = MvxSock.Connect(ref sid, "">http://exemple.ad.fr", 17401, LOGIN, PSW, "CRS610MI", "120");
            if (rc != 0)
            {
                MvxSock.ShowLastError(ref sid, "Error no " + rc + "
");
                return;
            }

            MvxSock.SetField(ref sid, "CUNO", "10000002");
            rc = MvxSock.Access(ref sid, "LstByNumber");
            if (rc != 0)
            {
                MvxSock.ShowLastError(ref sid, "Error no " + rc + "
");
                MvxSock.Close(ref sid);
                return;
            }

            while (MvxSock.More(ref sid))
            {
                Console.Write(MvxSock.GetField(ref sid, "CUNO") + "		");
                Console.WriteLine(MvxSock.GetField(ref sid, "CUNM"));
                MvxSock.Access(ref sid, null);
            }
            Console.Write("End of API");

            MvxSock.Close(ref sid);           
       }