Exemple #1
0
        private async Task <Courses> _GetCourses()
        {
            if (_courses != null)
            {
                return(_courses);
            }
            if (Server == null)
            {
                await FindServer();
            }
            if (Server == null)
            {
                return(null);
            }

            var request = new GetCourses();

            Courses result = null;

            NetworkComms.AppendGlobalIncomingPacketHandler <Courses>(Courses.GetHeader(),
                                                                     (h, c, r) =>
            {
                NetworkComms.RemoveGlobalIncomingPacketHandler(Courses.GetHeader());
                result   = r;
                _courses = r;
            });

            await request.Send(new IPEndPoint(IPAddress.Parse(Server.IP), Server.Port));

            var start = DateTime.Now;

            while ((DateTime.Now - start).TotalSeconds < 17)
            {
                if (result != null)
                {
                    return(result);
                }
                await Task.Delay(TimeSpan.FromSeconds(1));
            }
            Server = null;
            NetworkComms.RemoveGlobalIncomingPacketHandler(Courses.GetHeader());
            return(null);
        }