/// <summary>
/// Reads a new serialized message object from the base stream and deserializes it.
/// </summary>
/// <param name="readTimeOutSeconds">Optional read timeout in seconds (0 means no timeout).</param>
/// <returns>
/// The deserialized object if successful, <c>null</c> otherwise.
/// </returns>
public object Read(int readTimeOutSeconds = 0)
{
try
{
lock (_readSerializerMap)
{
if (_readSerializerMap.Count == 0)
{
return(false);
}
XmlSerializer serializer = null;
byte[] message = null;
do
{
if ((message = _stream.Read(readTimeOutSeconds)) == null)
{
return(null);
}
int descriptorLength = (message.Length < TypeDescriptorMaxLength) ? message.Length : TypeDescriptorMaxLength;
string typeDescriptor = Encoding.UTF8.GetString(message, 0, descriptorLength);
Match objectTypeMatch = _messageObjectTypeRegex.Match(typeDescriptor);
string messageObjectType = objectTypeMatch.Groups["objectType"].Value;
if ((objectTypeMatch.Success == false) || (string.IsNullOrWhiteSpace(messageObjectType)))
{
this.Error("The read object does not have a valid type.\r\n{0}\r\n", typeDescriptor);
return(null);
}
messageObjectType = messageObjectType.Trim().ToLower();
if (_readSerializerMap.ContainsKey(messageObjectType) == false)
{
this.Error("The object type '{0}' is not supported.", messageObjectType);
}
else
{
serializer = _readSerializerMap[messageObjectType];
}
}while (serializer == null);
using (MemoryStream ms = new MemoryStream(message))
{
return(serializer.Deserialize(ms));
}
}
}
catch (Exception ex)
{
this.Error("Reading serialized object failed.", ex);
}
return(null);
}
/// <summary>
/// Reads a new serialized message object from the base stream and deserializes it.
/// </summary>
/// <param name="readTimeOutSeconds">Optional read timeout in seconds (0 means no timeout).</param>
/// <returns>
/// The deserialized object if successful, <c>null</c> otherwise.
/// </returns>
public object Read(int readTimeOutSeconds = 0)
{
try
{
lock (_readSerializerMap)
{
if (_readSerializerMap.Count == 0)
{
return(false);
}
XmlSerializer serializer = null;
byte[] message = null;
bool isUnprocessedMessage = false;
do
{
if ((message = _stream.Read(readTimeOutSeconds)) == null)
{
return(null);
}
int descriptorLength = (message.Length < TypeDescriptorMaxLength) ? message.Length : TypeDescriptorMaxLength;
string typeDescriptor = Encoding.UTF8.GetString(message, 0, descriptorLength);
Match objectTypeMatch = _messageObjectTypeRegex.Match(typeDescriptor);
string messageObjectType = objectTypeMatch.Groups["objectType"].Value;
isUnprocessedMessage = (String.Equals(messageObjectType, typeof(UnprocessedMessage).Name));
if ((objectTypeMatch.Success == false) || (string.IsNullOrWhiteSpace(messageObjectType)))
{
this.Error($"The read object does not have a valid type: { Environment.NewLine }'{ typeDescriptor }'{ Environment.NewLine }");
if (isUnprocessedMessage == false)
{
this.Write(Utils.CreateUnprocessedMessage(Encoding.UTF8.GetString(message), UnprocessedMessageReason.SyntaxError));
}
return(null);
}
messageObjectType = messageObjectType.Trim().ToLower();
if (_readSerializerMap.ContainsKey(messageObjectType) == false)
{
this.Error("The object type '{0}' is not supported.", messageObjectType);
if (isUnprocessedMessage == false)
{
this.Write(Utils.CreateUnprocessedMessage(Encoding.UTF8.GetString(message), UnprocessedMessageReason.NotSupported));
}
}
else
{
serializer = _readSerializerMap[messageObjectType];
}
}while (serializer == null);
using (MemoryStream ms = new MemoryStream(message))
{
try
{
return(serializer.Deserialize(ms));
}
catch (Exception ex)
{
this.Error("Fail to deserialize message, Ingored \r\n {0} \r\n {1}", Encoding.UTF8.GetString(message), ex);
if (isUnprocessedMessage == false)
{
this.Write(Utils.CreateUnprocessedMessage(Encoding.UTF8.GetString(message), UnprocessedMessageReason.SyntaxError));
}
return(Read(readTimeOutSeconds));
}
}
}
}catch (IOException ex)
{
SocketException socketException = ex.InnerException as SocketException;
if (socketException != null)
{
SocketError socketError = socketException.SocketErrorCode;
this.Error($"Reading serialized object failed because of socket interruption. Error: { socketError.ToString() }", ex);
}
}catch (Exception ex)
{
this.Error("Reading serialized object failed.", ex);
this.Write(Utils.CreateUnprocessedMessage(ex.Message, UnprocessedMessageReason.NotSupported));
}
return(null);
}