private async Task <CoapObserveRelation> StartObservationAsync(Request request, Action <Response> notify, Action <FailReason> error)
{
IEndPoint endpoint = GetEffectiveEndpoint(request);
CoapObserveRelation relation = new CoapObserveRelation(request, endpoint, _config);
request = CreateObservationRequest(request, notify, error, relation, endpoint);
await SendAsync(request, CancellationToken.None).ConfigureAwait(false);
return(relation);
}
private CoapObserveRelation StartObservation(Request request, Action <Response> notify, Action <FailReason> error)
{
IEndPoint endpoint = GetEffectiveEndpoint(request);
CoapObserveRelation relation = new CoapObserveRelation(request, endpoint, _config);
request = CreateObservationRequest(request, notify, error, relation, endpoint);
request.Send();
return(relation);
}
private CoapObserveRelation Observe(Request request, Action <Response> notify, Action <FailReason> error)
{
CoapObserveRelation relation = StartObservation(request, notify, error);
Response response = relation.Request.WaitForResponse(_timeout);
if (response == null || !response.HasOption(OptionType.Observe))
{
relation.Canceled = true;
}
relation.Current = response;
return(relation);
}
private Request CreateObservationRequest(Request request, Action <Response> notify, Action <FailReason> error, CoapObserveRelation relation,
IEndPoint endpoint)
{
request.Respond += (o, e) =>
{
Response resp = e.Response;
lock (relation)
{
if (relation.Orderer.IsNew(resp))
{
relation.Current = resp;
Deliver(notify, e);
}
else
{
if (log.IsDebugEnabled)
{
log.Debug("Dropping old notification: " + resp);
}
}
}
};
Action <FailReason> fail = r =>
{
relation.Canceled = true;
Fail(error, r);
};
request.Rejected += (o, e) => fail(FailReason.Rejected);
request.TimedOut += (o, e) => fail(FailReason.TimedOut);
//await SendAsync(Prepare(request, endpoint));
var finalRequest = Prepare(request, endpoint);
return(finalRequest);
}