internal void SendUdpHandshake()
{
var payload = new Packets.UdpHandshake(ControlHandshakeType.ACK);
var packet = new RtpPacket(RtpPayloadType.UDPHandshake, payload);
SendOnStreamingSocket(packet);
}
/// <summary>
///
/// </summary>
/// <param name="type"></param>
/// <returns></returns>
private async Task SendUdpHandshakeAsync(
ControlHandshakeType type = ControlHandshakeType.ACK)
{
var packet = new Packets.UdpHandshake(type)
{
Channel = NanoChannel.TcpBase
};
// FIXME: Wait for first VideoPacket
// Currently WaitForMessage is broken and blocks VideoData
// populating to MessageReceived events
await _transport.SendAsync(packet);
}
public static INanoPacket ParsePacket(byte[] data, NanoChannelContext context)
{
EndianReader packetReader = new EndianReader(data);
RtpHeader header = new RtpHeader();
header.Deserialize(packetReader);
NanoPayloadType payloadType = header.PayloadType;
// It might be NanoChannel.Unknown at this point, if ChannelCreate
// packet was not processed yet
// It gets processed at the end of the function
NanoChannel channel = context.GetChannel(header.ChannelId);
INanoPacket packet = null;
long payloadOffset = packetReader.Position;
switch (payloadType)
{
// FIXME: Create from Attribute is broken
case NanoPayloadType.UDPHandshake:
packet = new UdpHandshake();
break;
case NanoPayloadType.ControlHandshake:
packet = new ControlHandshake();
break;
case NanoPayloadType.ChannelControl:
// Read type to pinpoint exact payload
ChannelControlType cct =
(ChannelControlType)packetReader.ReadUInt32LE();
packet = CreateFromChannelControlType(cct);
break;
case NanoPayloadType.Streamer:
packet = CreateFromStreamerHeader(packetReader, channel);
break;
default:
throw new NanoPackingException(
$"Unknown packet type received: {payloadType}");
}
if (packet == null)
{
throw new NanoPackingException("Failed to find matching body for packet");
}
packetReader.Seek(payloadOffset, SeekOrigin.Begin);
packet.Deserialize(packetReader);
packet.Header = header;
if (packet as ChannelCreate != null)
{
string channelName = ((ChannelCreate)packet).Name;
channel = NanoChannelClass.GetIdByClassName(channelName);
}
if (channel == NanoChannel.Unknown)
{
throw new NanoPackingException("ParsePacket: INanoPacket.Channel is UNKNOWN");
}
packet.Channel = channel;
return(packet);
}
