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);
}