/// <summary>
/// Called when the <see cref="OpenSession" /> message is recieved.
/// </summary>
/// <param name="e">The <see cref="ProtocolEventArgs{OpenSession}" /> instance containing the event data.</param>
public void OnSessionOpened(ProtocolEventArgs <OpenSession> e)
{
if (e.Message.SupportedProtocols.All(x => x.Protocol != (int)Protocols.ChannelStreaming))
{
return;
}
var protocol = e.Message.SupportedProtocols
.First(x => x.Protocol == (int)Protocols.ChannelStreaming);
IsSimpleStreamer = protocol.ProtocolCapabilities
.Where(x => x.Key.EqualsIgnoreCase(ChannelStreamingProducerHandler.SimpleStreamer))
.Select(x => x.Value.Item)
.OfType <bool>()
.FirstOrDefault();
var handler = Parent.Client.Handler <IChannelStreamingConsumer>();
handler.OnChannelMetadata += OnChannelMetadata;
handler.OnChannelData += OnChannelData;
CanStart = true;
CanStopStreaming = false;
UpdateCanDescribe();
Channels.Clear();
ChannelStreamingInfos.Clear();
}
private void OnChannelMetadata(object sender, ProtocolEventArgs <ChannelMetadata> e)
{
if (!e.Message.Channels.Any())
{
Parent.Details.Append(Environment.NewLine + "// No channels were described");
return;
}
// add to channel metadata collection
e.Message.Channels.ForEach(x =>
{
if (Channels.Any(c => c.ChannelUri.EqualsIgnoreCase(x.ChannelUri)))
{
return;
}
Channels.Add(x);
ChannelStreamingInfos.Add(ToChannelStreamingInfo(x));
});
if (e.Header.MessageFlags != (int)MessageFlags.MultiPart)
{
LogChannelMetadata(Channels);
if (!IsStreaming())
{
CanStartStreaming = !IsSimpleStreamer;
CanStopStreaming = IsSimpleStreamer;
UpdateCanRequestRange();
}
}
}
private void UpdateCanRequestRange()
{
CanRequestRange = CanStartStreaming &&
!IsSimpleStreamer &&
ChannelStreamingInfos.Any() &&
("TimeIndex".EqualsIgnoreCase(Model.Streaming.StreamingType) ||
"DepthIndex".EqualsIgnoreCase(Model.Streaming.StreamingType));
}
/// <summary>
/// Starts the streaming of channel data.
/// </summary>
public void StartStreaming()
{
// Prepare ChannelStreamingInfos startIndexes
ChannelStreamingInfos.ForEach(x => x.StartIndex = new StreamingStartIndex {
Item = GetStreamingStartValue()
});
Parent.Client.Handler <IChannelStreamingConsumer>()
.ChannelStreamingStart(ChannelStreamingInfos);
//CanDescribe = false;
CanStartStreaming = false;
CanStopStreaming = true;
CanRequestRange = false;
}
