/// <summary>
/// Init constructor.
/// </summary>
public BayeuxException(string message, BayeuxRequest request, BayeuxResponse response, IJSonObject responseObject)
: base(message)
{
Request = request;
Response = response;
JSonResponse = responseObject;
}
/// <summary>
/// Init constructor.
/// </summary>
public BayeuxConnectionEventArgs(BayeuxConnection connection, HttpStatusCode statusCode, string statusDescription, string data, IJSonObject message, BayeuxResponse response)
{
Connection = connection;
StatusCode = statusCode;
StatusDescription = statusDescription;
Data = data;
Message = message;
Response = response;
}
/// <summary>
/// Process given response. Request is also provided.
/// The default behavior is that it only passes response to request, however there might be
/// a situation, when no request was given (when a 'text' message has been sent).
/// Returning 'true' as a result will filter out the ResponseReceived event.
/// </summary>
protected virtual bool ProcessResponse(BayeuxRequest request, BayeuxResponse response)
{
if (request != null)
request.ProcessResponse(response);
else
{
DebugLog.WriteBayeuxLine("BayeuxConnection: Processing response ignored for null request!");
}
return false;
}
private void ProcessResponseMessage(BayeuxRequest request, HttpStatusCode httpStatusCode, string httpStatusDescription, IJSonObject message, string rawMessage)
{
try
{
string channel = message["channel"].StringValue; // each Bayuex message must have a channel associated!
BayeuxResponse response = null;
if (string.IsNullOrEmpty(channel))
throw new BayeuxException("Unexpected message with empty channel!");
if (request != null && (channel.StartsWith("/meta", StringComparison.Ordinal) && channel != request.Channel))
throw new BayeuxException(string.Format(CultureInfo.InvariantCulture, "Unexpected response with channel: '{0}'", channel), request, null, message);
if (request != null && channel.StartsWith("/meta", StringComparison.Ordinal) && request.ID != message["id"].StringValue)
throw new BayeuxException(string.Format(CultureInfo.InvariantCulture, "Invalid response ID, current: '{0}', expected: '{1}'", request.ID, message["id"].StringValue), request, null,
message);
///////////////////////////////////////////////////////////////////////////////////////////
// identify meta messages:
if (channel == HandshakeRequest.MetaChannel)
{
var handshakeResponse = new HandshakeResponse(message);
response = handshakeResponse;
// inform, that connection succeeded:
if (handshakeResponse.Successful)
{
ClientID = response.ClientID;
if (string.IsNullOrEmpty(ClientID))
{
throw new BayeuxException("Invalid ClientID received from server", request, handshakeResponse, message);
}
OnConnected(new BayeuxConnectionEventArgs(this, httpStatusCode, httpStatusDescription, rawMessage, message, handshakeResponse));
}
else
{
// inform that Handshake failed, via dedicated event:
ClientID = null;
OnConnectionFailed(new BayeuxConnectionEventArgs(this, response.Successful ? HttpStatusCode.OK : HttpStatusCode.BadRequest, null, rawMessage, message, response));
}
}
if (channel == DisconnectRequest.MetaChannel)
{
response = new BayeuxResponse(message);
// inform that disconnection succeeded:
_state = BayeuxConnectionState.Disconnected;
ClientID = null;
OnDisconnected(new BayeuxConnectionEventArgs(this, response.Successful ? HttpStatusCode.OK : HttpStatusCode.BadRequest, null, rawMessage, message, response));
}
if (channel == SubscribeRequest.MetaChannel)
{
var subscribeResponse = new SubscribeResponse(message);
response = subscribeResponse;
if (subscribeResponse.Successful)
_subscribedChannels.Add(subscribeResponse.SubscriptionChannel);
}
if (channel == UnsubscribeRequest.MetaChannel)
{
var unsubscribeResponse = new UnsubscribeResponse(message);
response = unsubscribeResponse;
if (unsubscribeResponse.Successful)
_subscribedChannels.Remove(unsubscribeResponse.SubscriptionChannel);
}
if (_subscribedChannels.Contains(channel))
{
response = new BayeuxResponse(message);
// event from server:
OnEventReceived(new BayeuxConnectionEventArgs(this, httpStatusCode, httpStatusDescription, rawMessage, message, response));
}
// process generic response:
if (response == null)
response = ProvideResponse(message);
// allow filtering of ResponseReceived event:
if (ProcessResponse(request, response))
return;
// one place to process all responses:
OnResponseReceived(new BayeuxConnectionEventArgs(this, httpStatusCode, httpStatusDescription, rawMessage, message, response));
}
catch (Exception ex)
{
DebugLog.WriteBayeuxException(ex);
string statusDescription = string.Concat(httpStatusDescription, "; unexpected exception: \"", ex.Message, "\"");
OnDataFailed(new BayeuxConnectionEventArgs(this, httpStatusCode, statusDescription, rawMessage, message));
}
}
/// <summary>
/// Processes response received from remote server.
/// </summary>
public virtual void ProcessResponse(BayeuxResponse response)
{
}