ContractFilter mismatch at the EndpointDispatcher exception

Question

I have the following scenario that I m trying to test for    A common WSDL WCF endpoint that implements objects based on the WSDL and is hosted in IIS  A client app that uses a proxy based off the WSDL to create requests     When I make a web service call from the client to the service endpoint  I get the following exception        The message with Action  http   IMyService CreateContainer  cannot be processed at the receiver  due to a ContractFilter mismatch at the EndpointDispatcher     This may be because of either a contract mismatch  mismatched Actions between sender and receiver  or a binding security mismatch between the sender and the receiver   Check that sender and receiver have the same contract and the same binding  including security requirements  e g  Message  Transport  None       I started using MS Service Trace Viewer  but not sure where to look  While looking at classes in client and the endpoint  they appear identical    How does one begin to debug this problem    What are some possible causes to this exception

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I got this after i copied the svc file and renamed it. Although the file name and the svc.cs file were correctly renamed, the markup still referenced the original file.

To fix this, right click on the copied svc file and choose View Markup and change the service reference.

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I had this problem om my test server  because I was running two copies of the same wcf on the same app pool  What solved for me was create separated pools for each version on my wcf and restart the IIS after this

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I had this error and it was caused by the recevier contract not implementing the method being called  Basically  someone hadn t deployed the lastest version of the WCF service to the host server

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For those who are using NodeJS with axios to make the SOAP requests you must include a SOAPAction header  Check the example below   axios post  https   wscredhomosocinalparceria facilinformatica com br WCF Soap Emprestimo svc wsdl              xmls     headers           Content-Type    text xml       SOAPAction   http   schemas facilinformatica com br Facil Credito WsCred IEmprestimo CalcularPrevisaoDeParcelas        then res   gt        console log res       catch err   gt        console log err response data

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You will also get this if you try to connect to the wrong URL      I have two endpoints and services defined in my system  with similar names    Got this exact error when the URLs got swapped on my client at some point  Really scratched the head until finally figuring out this dumb mistake

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Also it might be useful for those who are doing this by coding  You need to add WebHttpBehavior   to your added service endpoint  Something like    restHost AddServiceEndpoint typeof IRestInterface   new WebHttpBinding        Behaviors Add new WebHttpBehavior        Take a look at   https   docs microsoft com en-us dotnet framework wcf feature-details calling-a-rest-style-service-from-a-wcf-service

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My issue turned out to be something rare  but I ll mention it anyway   I encountered the issue deploying to our development environment  On that machine  our build person had created two folders  deployed two applications   An old version and the new current version  So if you don t have two versions of your application on the web server  this does not apply to you   The new location he created had a non-standard name as the first part of the url after the host   net tcp   dev umbrellacorp com DifferentFolderName MyProvider  On my local machine  my client was pointing to the standard folder name as was set up on all environments  except development   including my local environment   net tcp   dev umbrellacorp com AppServices MyProvider  When I blew away and replaced the web config on development with my local copy  the part of the url that needed to be special was blown away with the standard part  so as a result the client on dev pointed to the old application   The old application had an old contract and didn t understand the request and threw this error

User · Answer

A  ContractFilter mismatch at the EndpointDispatcher  means the receiver could not process the message because it did not match any of the contracts the receiver has configured for the endpoint which received the message   This can be because    You have different contracts between client and sender  You re using a different binding between client and sender  The message security settings are not consistent between client and sender    Have at look at the EndpointDispatcher class for more information on the subject   So   Make certain that your client and server contracts match    If you ve generated your client from a WSDL  is the WSDL up-to-date  If you ve made a recent change to the contract  have you deployed the right version of both client and server  If you ve hand-crafted your client contract classes  make sure the namespaces  elements names and action names match the ones expected by the server    Check the bindings are the same between client and server    If you re using a  config file to manage your endpoints  make sure the binding elements match    Check the security settings are the same between client and server    If you re using a  config file to manage your endpoints  make sure the security elements match

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For a Java client calling a  net endpoint  This was caused by mismatching Soap Action header   Content-Type  application soap xml charset UTF-8 action  http   example org ExampleWS exampleMethod    The above HTTP header or following XML tag needs to match the action method your are trying to invoke       lt soap Envelope xmlns soap  http   www w3 org 2003 05 soap-envelope  xmlns tem  http   tempuri org   xmlns gen  http   schemas datacontract org 2004 07 GenesysOnline WCFServices  gt      lt soap Header xmlns wsa  http   www w3 org 2005 08 addressing  gt         lt wsa To gt https   example org v1 Service svc lt  wsa To gt         lt wsa Action gt http   example org ExampleWS exampleMethod lt  wsa Action gt      lt  soap Header gt      lt soap Body gt              lt  soap Body gt   lt  soap Envelope gt

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I had a similar error  This could be because you would have changed some contract setting on your config file after it was refrenced into you project   solution - Update the webservice reference on you VSstudio project or create a new proxy using svcutil exe

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I had this problem and found that in my proxy generator  which I copied from another service  I forgot to change the name of the service   I changed this     Return New Service1DataClient binding  New EndpointAddress My Settings WCFServiceURL  amp    Service1Data svc      to     Return New Service2DataClient binding  New EndpointAddress My Settings WCFServiceURL  amp    Service2Data svc      It was a simple code error  but nearly impossible to debug   I hope this saves someone time

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The error says that there is a mismatch  assuming that you have a common contract based on the same WSDL  then the mismatch is in the configuration   For example that the client is using nettcpip and the server is set up to use basic http

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Silly  but I forgot to add  OperationContract  to my service interface  the one marked with  ServiceContract   and then you also get this error

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I had the same error on a WCF service deployed  the problem was related to another service deployed with another contract with the same port   Solution  I used different ports in the web config and the issue disappeared   Service 1  contract  Service WCF Contracts IBusiness1   baseAddress  net tcp   local 5244 ServiceBusiness     Service 2  contract  Service WCF Contracts IBusiness2  baseAddress  net tcp   local 5243 ServiceBusiness    Also  I ran into this situation by using diferent port for the same address between the service and the consumer

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I had this problem as well  It turned out it was caused by the contract serializer on server s end  It couldn t return my data contract object because some of its datamembers were readonly properties   Make sure your objects have setters for properties meant to be serialized

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I had the same issue  The problem was that I copied the code from another service as a starting point and did not change the service class in   svc file  Open the  svc file an make sure that the Service attribute is correct     lt    ServiceHost Language  C   Debug  true  Service  SME WCF ApplicationServices ReportRenderer  CodeBehind  ReportRenderer svc cs    gt

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So  my case was the following  I didn t use proxy for the client-server interaction  I used ChannelFactory  thus all the advice to upgrade to service reference was meaningless to me     The service was hosted in IIS and for some reason it had wrong references in the bin folder there  The project recompilation simply didn t lead to new dlls in that folder    So I just deleted all the stuff from there and added reference to the service in the same solution  then recompiled and now everything works

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This could be for 2 reasons for this     service ref is outdated  right click service ref n update it  contract which you have implemented might be different what client has  Compare both service n client contract n fix the contracts mismatch

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I spent days looking for the answer and I found it  but not in this thread  I am very new to WCF and C   so to some the answer might be obvious    In my situation I had a client tool that was originally developed for ASMX service  and for me it was returning that same error message    After trying all sorts of recommendations I found this site   http   myshittycode com 2013 10 01 the-message-with-action-cannot-be-processed-at-the-receiver-due-to-a-contractfilter-mismatch-at-the-endpointdispatcher    It put me on the right path  Specifically  soap operation  - WCF was appending ServiceName to the Namespace    client expected Http   TEST COM Login  but WCF sent Http   TEST COM IService1 Login  Solution is to add setting to  OperationContract  like this    OperationContract Action    http   TEST COM Login   ReplyAction    http   TEST COM Login     Ignore blank spaces in Http

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Oddly enough we worked around this error by using the same casing the Path and OperationContract name used   Apparently it was case-sensitive   If anyone knows why  please comment   Thank you

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As mentioned in other answers  such as  chinto  this happens when the SOAP Action header element does not match the Endpoint    You can find the correct URI to use by looking at the server s WSDL  You will see an operation element with an input child that has an  Action  attribute  That is what your SOAP Action needs to be on the client request    lt wsdl operation name  MethodName  gt   lt wsdl input wsaw Action  http   tempuri org IInterface MethodName  message  tns IInterface MethodName InputMessage   gt   lt wsdl output wsaw Action  http   tempuri org IInterface MethodNameResponse  message  tns IInterface MethodName OutputMessage   gt   lt  wsdl operation gt

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This error generally comes if the code is not deployed properly   In my case  I have two services ServiceA and ServiceB  I found the problem that ServiceB files were not deployed properly  Because of which when ServiceA was calling ServiceB internally it was giving below error     Please make sure the files and references are deployed properly

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I solved this by adding the following to my contract implementation    ServiceBehavior AddressFilterMode   AddressFilterMode Any    For example    ServiceBehavior AddressFilterMode   AddressFilterMode Any   public class MyUploadService   IMyUploadService

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If you are calling WCF method you should include interface in Header   HttpWebRequest req    HttpWebRequest WebRequest Create Url   if  Url Contains   svc          isWCFService   true      req Headers Add  SOAPAction    http   tempuri org WCF INterface GetAPIKeys      else        req Headers Add  SOAPAction      http   tempuri org     asmxMethodName

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I had this error because I have an old version of the DLL in the GAC of my server  So make sure everything is referenced correctly and that the assembly GAC is up to date with the good dll

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Your client was not updated So Update your services from Web service and then rebuild your project

[wcf] ContractFilter mismatch at the EndpointDispatcher exception

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