Azure load balancer; SOAP error

davidchavko — Thu, 23 Jun 2022 15:11:51 GMT

Hello,

we are using azure load balancer with two backend app servers running Blue Prism Server:7.01 under local system account. When I put loadbalancer DNS into the browser it return http error 405 "The website has a programming error." I'm able to run the server through browser from backend servers without any problem.

The following error has occurred:

SOAP security negotiation with 'http://serverIP:8199/bpserver' for target 'http://serverIP:8199/bpserver' failed. See inner exception for more details.

System.ServiceModel.Security.SecurityNegotiationException: SOAP security negotiation with 'http://serverIP:8199/bpserver' for target 'http://serverIP:8199/bpserver' failed. See inner exception for more details. ---> System.ComponentModel.Win32Exception: The client credential entered was invalid.

at System.ServiceModel.Security.WindowsSspiNegotiation.GetOutgoingBlob(Byte[] incomingBlob, ChannelBinding channelbinding, ExtendedProtectionPolicy protectionPolicy)

at System.ServiceModel.Security.SspiNegotiationTokenProvider.GetOutgoingBlobProxy.GetOutgoingBlob(ChannelBinding channelBinding)

at System.ServiceModel.Security.RequestSecurityToken.GetBinaryNegotiation()

at System.ServiceModel.Security.WSTrust.Driver.WriteRequestSecurityToken(RequestSecurityToken rst, XmlWriter xmlWriter)

at System.ServiceModel.Security.RequestSecurityToken.OnWriteTo(XmlWriter writer)

at System.ServiceModel.Security.RequestSecurityToken.WriteTo(XmlWriter writer)

at System.ServiceModel.Security.RequestSecurityToken.OnWriteBodyContents(XmlDictionaryWriter writer)

at System.ServiceModel.Channels.BodyWriterMessage.OnWriteBodyContents(XmlDictionaryWriter writer)

at System.ServiceModel.Channels.Message.OnWriteMessage(XmlDictionaryWriter writer)

at System.ServiceModel.Channels.BufferedMessageWriter.WriteMessage(Message message, BufferManager bufferManager, Int32 initialOffset, Int32 maxSizeQuota)

at System.ServiceModel.Channels.TextMessageEncoderFactory.TextMessageEncoder.WriteMessage(Message message, Int32 maxMessageSize, BufferManager bufferManager, Int32 messageOffset)

at System.ServiceModel.Channels.HttpOutput.SerializeBufferedMessage(Message message, Boolean shouldRecycleBuffer)

at System.ServiceModel.Channels.HttpOutput.Send(TimeSpan timeout)

at System.ServiceModel.Channels.HttpChannelFactory`1.HttpRequestChannel.HttpChannelRequest.SendRequest(Message message, TimeSpan timeout)

at System.ServiceModel.Channels.RequestChannel.Request(Message message, TimeSpan timeout)

at System.ServiceModel.Security.IssuanceTokenProviderBase`1.DoNegotiation(TimeSpan timeout)

--- End of inner exception stack trace ---

Server stack trace:

at System.ServiceModel.Security.IssuanceTokenProviderBase`1.DoNegotiation(TimeSpan timeout)

at System.ServiceModel.Security.SspiNegotiationTokenProvider.OnOpen(TimeSpan timeout)

at System.ServiceModel.Security.WrapperSecurityCommunicationObject.OnOpen(TimeSpan timeout)

at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)

at System.ServiceModel.Security.CommunicationObjectSecurityTokenProvider.Open(TimeSpan timeout)

at System.ServiceModel.Security.SymmetricSecurityProtocol.OnOpen(TimeSpan timeout)

at System.ServiceModel.Security.WrapperSecurityCommunicationObject.OnOpen(TimeSpan timeout)

at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)

at System.ServiceModel.Channels.SecurityChannelFactory`1.ClientSecurityChannel`1.OnOpen(TimeSpan timeout)

at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)

at System.ServiceModel.Security.SecuritySessionSecurityTokenProvider.DoOperation(SecuritySessionOperation operation, EndpointAddress target, Uri via, SecurityToken currentToken, TimeSpan timeout)

at System.ServiceModel.Security.SecuritySessionSecurityTokenProvider.GetTokenCore(TimeSpan timeout)

at System.IdentityModel.Selectors.SecurityTokenProvider.GetToken(TimeSpan timeout)

at System.ServiceModel.Security.SecuritySessionClientSettings`1.ClientSecuritySessionChannel.OnOpen(TimeSpan timeout)

at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)

at System.ServiceModel.Channels.ReliableChannelBinder`1.ChannelSynchronizer.SyncWaiter.TryGetChannel()

at System.ServiceModel.Channels.ReliableChannelBinder`1.ChannelSynchronizer.SyncWaiter.TryWait(TChannel& channel)

at System.ServiceModel.Channels.ReliableChannelBinder`1.ChannelSynchronizer.TryGetChannel(Boolean canGetChannel, Boolean canCauseFault, TimeSpan timeout, MaskingMode maskingMode, TChannel& channel)

at System.ServiceModel.Channels.ClientReliableChannelBinder`1.Request(Message message, TimeSpan timeout, MaskingMode maskingMode)

at System.ServiceModel.Channels.RequestReliableRequestor.OnRequest(Message request, TimeSpan timeout, Boolean last)

at System.ServiceModel.Channels.ReliableRequestor.Request(TimeSpan timeout)

at System.ServiceModel.Channels.ClientReliableSession.Open(TimeSpan timeout)

at System.ServiceModel.Channels.ReliableRequestSessionChannel.OnOpen(TimeSpan timeout)

at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)

at System.ServiceModel.Channels.ServiceChannel.OnOpen(TimeSpan timeout)

at System.ServiceModel.Channels.CommunicationObject.Open(TimeSpan timeout)

at System.ServiceModel.Channels.CommunicationObject.Open()

Exception rethrown at [0]:

at System.Runtime.Remoting.Proxies.RealProxy.HandleReturnMessage(IMessage reqMsg, IMessage retMsg)

at System.Runtime.Remoting.Proxies.RealProxy.PrivateInvoke(MessageData& msgData, Int32 type)

at System.ServiceModel.ICommunicationObject.Open()

at BluePrism.AutomateAppCore.ServerManagerWCF.OpenConnection(clsDBConnectionSetting connectionSetting, Dictionary`2 keys, IUser& systemUser)

at BluePrism.AutomateAppCore.ServerFactory.Validate(clsDBConnectionSetting connectionSetting)

at BluePrism.Config.ConnectionDetail.u(Object sender, EventArgs e)

===================
I thought that maybe the issue could be that it's missing computer account that it could anthentificate with, hence I created it. After that I run setspn "setspn -S HTTP/fqdn:8199/BPServer hostname" what end up successfully.

Now when I run connection test from blueprism I got an error 404 "Ensure that the specified server address matches the binding configured on the server".

System.ServiceModel.EndpointNotFoundException: There was no endpoint listening at http://fqdn:8199/bpserver that could accept the message. This is often caused by an incorrect address or SOAP action. See InnerException, if present, for more details. ---> System.Net.WebException: The remote server returned an error: (404) Not Found.
at System.Net.HttpWebRequest.GetResponse()
at

I already searched in blueprism documentations for all possible instructions and requirements, but I found almost nothing what could help me to figure out what could be the problem. any help here will be much appreciated.

thank you

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Azure load balancer; SOAP error