/// <summary>
/// Gets the client
/// If the broker client is null, a broker client is created by the client id and returned
/// If the broker client is not null, the client id must match the broker client's id if this is not a singleton frontend, otherwise an exception would be throwed
/// </summary>
/// <param name="clientId">indicating the client id</param>
/// <returns>the broker client</returns>
private BrokerClient GetClient(string clientId)
{
// Bug 3062: For http client, the connection is always the same thus we should allow different client id in the same channel
if (this.isSingleton)
{
BrokerClient client = this.clientManager.GetClient(clientId, GetUserName());
client.SingletonInstanceConnected();
return(client);
}
else
{
if (this.client == null)
{
lock (this.lockToCreateClient)
{
if (this.client == null)
{
//get domainUsername.
string domainUsername;
if (SoaCommonConfig.WithoutSessionLayer)
{
string domain = Environment.UserDomainName;
string username = Environment.UserName;
if (domain != System.Net.Dns.GetHostName())
{
domainUsername = Path.Combine(domain, username);
}
else
{
domainUsername = username;
}
}
else
{
domainUsername = GetUserName();
}
this.client = this.clientManager.GetClient(clientId, domainUsername);
this.client.FrontendConnected(this, this);
return(this.client);
}
}
}
if (String.Compare(this.client.ClientId, clientId, StringComparison.OrdinalIgnoreCase) == 0)
{
return(this.client);
}
else
{
ThrowHelper.ThrowSessionFault(SOAFaultCode.Broker_ClientIdNotMatch, SR.ClientIdNotMatch);
Debug.Fail("[ServiceJobMonitor] This line could not be reached.");
return(null);
}
}
}
/// <summary>
/// AsyncCallback for ReceiveRequest
/// </summary>
/// <param name="ar">async result</param>
private void ReceiveRequest(IAsyncResult ar)
{
ChannelClientState state = (ChannelClientState)ar.AsyncState;
T channel = (T)state.Channel;
BrokerClient client = state.Client;
RequestContext request;
try
{
request = channel.EndReceiveRequest(ar);
}
catch (TimeoutException)
{
BrokerTracing.TraceEvent(TraceEventType.Information, 0, "[RequestReplyFrontEnd] Receive Request timed out");
if (!ar.CompletedSynchronously)
{
this.TryToBeginReceiveMessagesWithThrottling(state);
}
return;
}
catch (CommunicationException ce)
{
BrokerTracing.TraceEvent(TraceEventType.Information, 0, "[RequestReplyFrontEnd] Exception while receiving requests: {0}", ce.Message);
// Retry receiving requests
if (!ar.CompletedSynchronously)
{
this.TryToBeginReceiveMessagesWithThrottling(state);
}
return;
}
#region Debug Failure Test
SimulateFailure.FailOperation(1);
#endregion
// After channel timed out, the request will be null if you call channel.ReceiveRequest()
// Need to end the channel at this time
if (request == null)
{
// Indicate that the channel should be closed
// Close the channel
lock (channel)
{
if (channel.State == CommunicationState.Opened)
{
try
{
channel.Close();
}
catch (CommunicationException ce)
{
BrokerTracing.TraceEvent(TraceEventType.Warning, 0, "[RequestReplyFrontEnd] Exception throwed while close the channel: {0}", ce);
channel.Abort();
}
}
}
return;
}
// Try to get the client id and the user name
string callerSID;
string userName = this.GetUserName(request.RequestMessage, out callerSID);
string clientId = GetClientId(request.RequestMessage, callerSID);
try
{
ParamCheckUtility.ThrowIfTooLong(clientId.Length, "clientId", Constant.MaxClientIdLength, SR.ClientIdTooLong);
ParamCheckUtility.ThrowIfNotMatchRegex(ParamCheckUtility.ClientIdValid, clientId, "clientId", SR.InvalidClientId);
}
catch (ArgumentException)
{
BrokerTracing.EtwTrace.LogFrontEndRequestRejectedClientIdInvalid(this.SessionId, clientId, Utility.GetMessageIdFromMessage(request.RequestMessage));
RequestContextBase requestContextToReject = new RequestReplyRequestContext(request, this.Observer);
requestContextToReject.BeginReply(FrontEndFaultMessage.GenerateFaultMessage(request.RequestMessage, request.RequestMessage.Headers.MessageVersion, SOAFaultCode.Broker_InvalidClientIdOrTooLong, SR.InvalidClientIdOrTooLong), this.ReplySentCallback, requestContextToReject);
return;
}
if (client == null || client.State == BrokerClientState.Disconnected || String.Compare(clientId, client.ClientId, StringComparison.OrdinalIgnoreCase) != 0)
{
try
{
client = this.ClientManager.GetClient(clientId, userName);
client.SingletonInstanceConnected();
}
catch (FaultException <SessionFault> e)
{
if (e.Detail.Code == (int)SOAFaultCode.AccessDenied_BrokerQueue)
{
BrokerTracing.EtwTrace.LogFrontEndRequestRejectedAuthenticationError(this.SessionId, clientId, Utility.GetMessageIdFromMessage(request.RequestMessage), userName);
RequestContextBase requestContextToReject = new RequestReplyRequestContext(request, this.Observer);
requestContextToReject.BeginReply(FrontEndFaultMessage.GenerateFaultMessage(request.RequestMessage, request.RequestMessage.Headers.MessageVersion, SOAFaultCode.Broker_UserNameNotMatch, SR.UserNameNotMatch, userName, clientId), this.ReplySentCallback, requestContextToReject);
return;
}
else
{
BrokerTracing.EtwTrace.LogFrontEndRequestRejectedGeneralError(this.SessionId, clientId, Utility.GetMessageIdFromMessage(request.RequestMessage), e.ToString());
throw;
}
}
catch (BrokerQueueException e)
{
BrokerTracing.EtwTrace.LogFrontEndRequestRejectedGeneralError(this.SessionId, clientId, Utility.GetMessageIdFromMessage(request.RequestMessage), e.ToString());
RequestContextBase requestContextToReject = new RequestReplyRequestContext(request, this.Observer);
requestContextToReject.BeginReply(FrontEndFaultMessage.TranslateBrokerQueueExceptionToFaultMessage(e, request.RequestMessage), this.ReplySentCallback, requestContextToReject);
return;
}
catch (Exception e)
{
BrokerTracing.EtwTrace.LogFrontEndRequestRejectedGeneralError(this.SessionId, clientId, Utility.GetMessageIdFromMessage(request.RequestMessage), e.ToString());
throw;
}
state.Client = client;
}
// Receive new requests
if (!ar.CompletedSynchronously)
{
this.TryToBeginReceiveMessagesWithThrottling(state);
}
// Try to get the user info header
bool userDataFlag = GetUserInfoHeader(request.RequestMessage);
// Create request context
RequestContextBase requestContext;
if (userDataFlag)
{
// Message that needs not to reply
requestContext = DummyRequestContext.GetInstance(request.RequestMessage.Version);
// Reply the message to the client immediately if user data is found for request/reply MEP (basic http binding)
try
{
request.BeginReply(Message.CreateMessage(request.RequestMessage.Headers.MessageVersion, request.RequestMessage.Headers.Action + "Response"), this.ReplySent, request);
}
catch (Exception e)
{
BrokerTracing.TraceEvent(TraceEventType.Error, 0, "[RequestReplyFrontEnd] Exception throwed while trying to reply dummy message to client: {0}", e);
}
}
else
{
requestContext = new RequestReplyRequestContext(request, this.Observer, client);
}
// Check auth
if (!this.CheckAuth(requestContext, request.RequestMessage))
{
return;
}
// Bug 15195: Remove security header for https
TryRemoveSecurityHeaderForHttps(request.RequestMessage);
// Send request to the broker client
client.RequestReceived(requestContext, request.RequestMessage, null);
}
/// <summary>
/// AsyncCallback for ReceiveRequest
/// </summary>
/// <param name="ar">async result</param>
private void ReceiveRequest(IAsyncResult ar)
{
ChannelClientState state = (ChannelClientState)ar.AsyncState;
BrokerClient client = state.Client;
Message request;
try
{
request = this.azureQueueProxy.EndReceiveRequest(ar);
}
catch (TimeoutException)
{
BrokerTracing.TraceEvent(TraceEventType.Information, 0, "[AzureQueueFrontEnd] Receive Request timed out");
if (!ar.CompletedSynchronously)
{
this.TryToBeginReceiveMessagesWithThrottling(state);
}
return;
}
catch (CommunicationException ce)
{
BrokerTracing.TraceEvent(TraceEventType.Information, 0, "[AzureQueueFrontEnd] Exception while receiving requests: {0}", ce.Message);
// Retry receiving requests
if (!ar.CompletedSynchronously)
{
this.TryToBeginReceiveMessagesWithThrottling(state);
}
return;
}
#region Debug Failure Test
SimulateFailure.FailOperation(1);
#endregion
// Try to get the client id and the user name
string userName = GetUserName(request);
string clientId = GetClientId(request, string.Empty);
try
{
ParamCheckUtility.ThrowIfTooLong(clientId.Length, "clientId", Constant.MaxClientIdLength, SR.ClientIdTooLong);
ParamCheckUtility.ThrowIfNotMatchRegex(ParamCheckUtility.ClientIdValid, clientId, "clientId", SR.InvalidClientId);
}
catch (ArgumentException)
{
BrokerTracing.EtwTrace.LogFrontEndRequestRejectedClientIdInvalid(this.SessionId, clientId, Utility.GetMessageIdFromMessage(request));
return;
}
if (client == null || client.State == BrokerClientState.Disconnected || !client.ClientId.Equals(clientId, StringComparison.InvariantCultureIgnoreCase))
{
try
{
client = this.ClientManager.GetClient(clientId, userName);
client.SingletonInstanceConnected();
}
catch (FaultException <SessionFault> e)
{
if (e.Detail.Code == (int)SOAFaultCode.AccessDenied_BrokerQueue)
{
BrokerTracing.EtwTrace.LogFrontEndRequestRejectedAuthenticationError(this.SessionId, clientId, Utility.GetMessageIdFromMessage(request), userName);
return;
}
else
{
BrokerTracing.EtwTrace.LogFrontEndRequestRejectedGeneralError(this.SessionId, clientId, Utility.GetMessageIdFromMessage(request), e.ToString());
throw;
}
}
catch (BrokerQueueException e)
{
BrokerTracing.EtwTrace.LogFrontEndRequestRejectedGeneralError(this.SessionId, clientId, Utility.GetMessageIdFromMessage(request), e.ToString());
return;
}
catch (Exception e)
{
BrokerTracing.EtwTrace.LogFrontEndRequestRejectedGeneralError(this.SessionId, clientId, Utility.GetMessageIdFromMessage(request), e.ToString());
throw;
}
state.Client = client;
}
// Receive new requests
if (!ar.CompletedSynchronously)
{
this.TryToBeginReceiveMessagesWithThrottling(state);
}
// Try to get the user info header
bool userDataFlag = GetUserInfoHeader(request);
// Create request context
RequestContextBase requestContext;
//Message that needs not to reply
requestContext = DummyRequestContext.GetInstance(request.Version);
// Bug 15195: Remove security header for https
TryRemoveSecurityHeaderForHttps(request);
// Send request to the broker client
client.RequestReceived(requestContext, request, null);
}