private void PreviewReceive(object sender, CommunicationReceiveEventArgs e)
{
if (e.Head == null || e.Head.Length != 17)
{
e.Handled = true;
return;
}
}
private void Receive(object sender, CommunicationReceiveEventArgs e)
{
if (e.Head[0] < 3)
{
var id = new Guid(e.Head.Skip(1).Take(16).ToArray());
IOManager.SetMessage(id, e.Data);
return;
}
Receive_3_InvokeMethod(e);
}
private void Execute_0_ChannelExist(CommunicationReceiveEventArgs e)
{
string channelName = MessageFormatter.ToChannelExist(e.Data);
if (ChannelManager.Exist(channelName))
{
e.Communication.Send(new byte[] { 1 }, e.Head);
}
else
{
e.Communication.Send(new byte[] { 0 }, e.Head);
}
}
private void Execute_1_CreateChannel(CommunicationReceiveEventArgs e)
{
string channelName = MessageFormatter.ToChannelExist(e.Data);
if (ChannelManager.Exist(channelName))
{
ServiceUser user = (ServiceUser)e.Communication["user"];
InstanceManager.GetInstance(ChannelManager[channelName], InvokeMethod, user);
e.Communication.Send(new byte[] { 1 }, e.Head);
}
else
{
e.Communication.Send(new byte[] { 0 }, e.Head);
}
}
private void Receive(object sender, CommunicationReceiveEventArgs e)
{
switch (e.Head[0])
{
case 0:
Execute_0_ChannelExist(e);
break;
case 1:
Execute_1_CreateChannel(e);
break;
case 2:
Execute_2_MethodInvoke(e);
break;
case 3:
var id = new Guid(e.Head.Skip(1).Take(16).ToArray());
IOManager.SetMessage(id, e.Data);
break;
}
}
private void Execute_2_MethodInvoke(CommunicationReceiveEventArgs e)
{
ServiceChannel channel;
int methodIndex;
object[] args;
MessageFormatter.ToChannelMethodInvoke(e.Data, ChannelManager, out channel, out methodIndex, out args);
ServiceUser user = (ServiceUser)e.Communication["user"];
byte[] data;
if (channel == null)
{
data = MessageFormatter.FromChannelMethodResult(null, "ChannelNotExist");
e.Communication.Send(data, e.Head);
return;
}
if (methodIndex >= channel.Provider.ServerOperations.Count)
{
data = MessageFormatter.FromChannelMethodResult(null, "MethodNotExist");
e.Communication.Send(data, e.Head);
return;
}
var method = channel.Provider.ServerOperations[methodIndex];
var instance = InstanceManager.GetInstance(channel, InvokeMethod, user);
ServiceContext.Context = user.GetContext(channel);
if (instance == null)
{
data = MessageFormatter.FromChannelMethodResult(null, "InstanceCreateFailed");
e.Communication.Send(data, e.Head);
return;
}
object result;
if (args.Length == 0)
{
args = null;
}
try
{
result = method.Invoke(instance, args);
}
catch (ArgumentException ex)
{
data = MessageFormatter.FromChannelMethodResult(null, "MethodParametersError");
e.Communication.Send(data, e.Head);
return;
}
catch (Exception ex)
{
data = MessageFormatter.FromChannelMethodResult(null, "MethodRuntimeError");
e.Communication.Send(data, e.Head);
return;
}
data = MessageFormatter.FromChannelMethodResult(result, null);
e.Communication.Send(data, e.Head);
}
internal void Receive_3_InvokeMethod(CommunicationReceiveEventArgs e)
{
byte[] data;
ServiceChannel channel;
int methodIndex;
object[] args;
BinaryDataReader reader = new BinaryDataReader(e.Data);
var channelName = reader.ReadString().ToLower().Trim();
channel = ChannelBuffer.Keys.SingleOrDefault(t => t.Name.ToLower().Trim() == channelName);
if (channel == null)
{
data = MessageFormatter.FromChannelMethodResult(null, "ChannelNotExist");
Client.Send(data, e.Head);
return;
}
methodIndex = reader.ReadInt32();
if (methodIndex >= channel.Provider.ClientOperations.Count)
{
data = MessageFormatter.FromChannelMethodResult(null, "MethodNotExist");
Client.Send(data, e.Head);
return;
}
var method = channel.Provider.ClientOperations[methodIndex];
var parameter = method.GetParameters();
args = new object[reader.ReadByte()];
for (int i = 0; i < args.Length; i++)
{
if (channel.Formatter != null)
{
args[i] = channel.Formatter.Deserialize(parameter[i].ParameterType, reader.ReadBytes());
}
else
{
args[i] = DataFormatter.Deserialize(parameter[i].ParameterType, reader.ReadBytes());
}
}
var instance = ChannelBuffer[channel].GetType().GetMethod("GetChannel").Invoke(ChannelBuffer[channel], null);
if (instance == null)
{
data = MessageFormatter.FromChannelMethodResult(null, "InstanceCreateFailed");
Client.Send(data, e.Head);
return;
}
object result;
try
{
result = method.Invoke(instance, args);
}
catch (ArgumentException)
{
data = MessageFormatter.FromChannelMethodResult(null, "MethodParametersError");
Client.Send(data, e.Head);
return;
}
catch (Exception)
{
data = MessageFormatter.FromChannelMethodResult(null, "MethodRuntimeError");
Client.Send(data, e.Head);
return;
}
data = MessageFormatter.FromChannelMethodResult(result, null);
Client.Send(data, e.Head);
}
