internal T Deserialize <T>(WebSocketMessage message)
{
using (var valueStream = message.GetValueStream())
{
if (valueStream != null)
{
using (var reader = new StreamReader(valueStream))
using (var jsonReader = new JsonTextReader(reader))
{
return(_serializer.Deserialize <T>(jsonReader));
}
}
}
return(default(T));
}
protected override void OnMessage(MessageEventArgs e)
{
WebSocketMessage message = new WebSocketMessage(e.RawData);
try
{
var user = AuthenticationService.FindUser(AuthenticationSource.IpAddress, Context?.UserEndPoint.Address.ToString());
if (user == null)
{
throw new UnauthorizedAccessException($"Access from {Context?.UserEndPoint.Address} not allowed");
}
Thread.CurrentPrincipal = new GenericPrincipal(user, new string[0]);
if (message.MessageType == WebSocketMessage.WebSocketMessageType.RootQuery)
{
_sendResponse(message, InitialObject);
}
else // method of particular object
{
IDto objectToInvoke = _referenceResolver.ResolveReference(message.DtoGuid);
if (objectToInvoke != null)
{
if (message.MessageType == WebSocketMessage.WebSocketMessageType.Query ||
message.MessageType == WebSocketMessage.WebSocketMessageType.Invoke)
{
Type objectToInvokeType = objectToInvoke.GetType();
MethodInfo methodToInvoke = objectToInvokeType.GetMethods()
.FirstOrDefault(m => m.Name == message.MemberName &&
m.GetParameters().Length == message.ValueCount);
if (methodToInvoke != null)
{
var parameters = DeserializeDto <WebSocketMessageArrayValue>(message.GetValueStream());
ParameterInfo[] methodParameters = methodToInvoke.GetParameters();
for (int i = 0; i < methodParameters.Length; i++)
{
MethodParametersAlignment.AlignType(ref parameters.Value[i],
methodParameters[i].ParameterType);
}
object response = methodToInvoke.Invoke(objectToInvoke,
BindingFlags.Instance | BindingFlags.InvokeMethod | BindingFlags.Public, null,
parameters.Value, null);
if (message.MessageType == WebSocketMessage.WebSocketMessageType.Query)
{
_sendResponse(message, response);
}
}
else
{
throw new ApplicationException(
$"Server: unknown method: {objectToInvoke}:{message.MemberName}");
}
}
else if (message.MessageType == WebSocketMessage.WebSocketMessageType.Get ||
message.MessageType == WebSocketMessage.WebSocketMessageType.Set)
{
PropertyInfo property = objectToInvoke.GetType().GetProperty(message.MemberName);
if (property != null)
{
if (message.MessageType == WebSocketMessage.WebSocketMessageType.Get &&
property.CanRead)
{
object response = property.GetValue(objectToInvoke, null);
_sendResponse(message, response);
}
else // Set
{
if (property.CanWrite)
{
var parameter = DeserializeDto <object>(message.GetValueStream());
MethodParametersAlignment.AlignType(ref parameter, property.PropertyType);
property.SetValue(objectToInvoke, parameter, null);
}
else
{
throw new ApplicationException(
$"Server: not writable property: {objectToInvoke}:{message.MemberName}");
}
}
}
else
{
throw new ApplicationException(
$"Server: unknown property: {objectToInvoke}:{message.MemberName}");
}
}
else if (message.MessageType == WebSocketMessage.WebSocketMessageType.EventAdd ||
message.MessageType == WebSocketMessage.WebSocketMessageType.EventRemove)
{
EventInfo ei = objectToInvoke.GetType().GetEvent(message.MemberName);
if (ei != null)
{
if (message.MessageType == WebSocketMessage.WebSocketMessageType.EventAdd)
{
_addDelegate(objectToInvoke, ei);
}
else if (message.MessageType == WebSocketMessage.WebSocketMessageType.EventRemove)
{
_removeDelegate(objectToInvoke, ei);
}
}
else
{
throw new ApplicationException(
$"Server: unknown event: {objectToInvoke}:{message.MemberName}");
}
}
}
else
{
_sendResponse(message, null);
throw new ApplicationException($"Server: unknown DTO: {message.DtoGuid} on {message}");
}
}
}
catch (Exception ex)
{
message.MessageType = WebSocketMessage.WebSocketMessageType.Exception;
//SerializeDto(message, ex);
//Send(message.Serialize());
Logger.Error(ex);
Debug.WriteLine(ex);
}
}
