public static void SendMessage(Client recipient, PacketType packetType, object data)
{
if (recipient == null)
{
return;
}
#if DEBUG
//
// If we're debugging, make sure that the data type matches that required by the packetType, or else throw an exception.
//
var type = DataPacket.PacketTypeMap[packetType];
if (type != null)
{
var testObject = Convert.ChangeType(data, type);
}
else
{
if (data != null)
{
throw new ArgumentException("Data from this packet type was expected to be null, but wasn't.");
}
}
#endif
// ToDo: Don't hardcode Packet Version 1 here. Instead, add a packet version property to Client, and switch on that.
var packetBase = new PacketBase {PacketVersion = PacketVersion.Version1};
var packetV1 = new PacketV1
{
PacketType = packetType,
Data = data,
Sender = ServerName
};
packetV1.Recipients.Add(recipient.UserInfo.EmailAddress);
packetBase.Data = packetV1;
dynamic baseBuffer;
using (var stream = new MemoryStream())
{
var binaryWriter = new BinaryWriter(stream);
packetBase.Write(binaryWriter);
baseBuffer = stream.ToArray();
}
var messageSize = baseBuffer.Length;
byte[] bytes = BitConverter.GetBytes(messageSize);
if (BitConverter.IsLittleEndian)
{
Array.Reverse(bytes);
}
var offset = 0;
var messageBuffer = new byte[sizeof(uint) + messageSize];
bytes.CopyTo(messageBuffer, offset);
offset += sizeof(uint);
baseBuffer.CopyTo(messageBuffer, offset);
recipient.Send(messageBuffer);
}
private async Task SendMessage(PacketType packetType, IEnumerable<Friend> recipientList, object data)
{
var mainPageViewModel = MainPageViewModel.GetInstance();
if ((ServerProxy.TcpSocket == null) || mainPageViewModel.ConnectionStatus == false)
{
return;
}
#if DEBUG
//
// If we're debugging, make sure that the data type matches that required by the packetType, or else throw an exception.
//
var type = DataPacket.PacketTypeMap[packetType];
if (type != null)
{
var testObject = Convert.ChangeType(data, type);
}
else
{
if (data != null)
{
throw new ArgumentException("Data from this packet type was expected to be null, but wasn't.");
}
}
#endif
using (var dataWriter = new DataWriter(ServerProxy.TcpSocket.OutputStream))
{
byte[] msgSizeBuffer;
dynamic baseBuffer = null;
if (PacketType.c_HeartBeat == packetType)
{
// Message Size is specified by the size of an int.
msgSizeBuffer = new byte[] {0, 0, 0, 0};
}
else
{
var packetBase = new PacketBase {PacketVersion = PacketVersion.Version1};
var packetV1 = new PacketV1
{
PacketType = packetType,
Data = data,
Sender = Settings.EmailAddress
};
foreach (var b in recipientList)
{
packetV1.Recipients.Add(b.EmailAddress);
}
packetBase.Data = packetV1;
using (var stream = new MemoryStream())
{
var binaryWriter = new BinaryWriter(stream);
packetBase.Write(binaryWriter);
baseBuffer = stream.ToArray();
}
var messageSize = baseBuffer.Length;
msgSizeBuffer = BitConverter.GetBytes(messageSize);
if (!BitConverter.IsLittleEndian)
{
Array.Reverse(msgSizeBuffer);
}
}
//
// 1. Write the message size
// 2. Write the object buffer (unless it's a heartbeat)
//
dataWriter.WriteBytes(msgSizeBuffer);
if (baseBuffer != null)
{
dataWriter.WriteBytes(baseBuffer);
}
await dataWriter.StoreAsync();
dataWriter.DetachStream();
}
}