404 when uploading changes

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  If I can use a sync service to create a database schema and download data, why does it return a 404 when I try to upload data?

  I am using sync framework in an application to synchronize data between workstations and a central server. As long as I download data from the server (create new database on local machine and download data into the new tables), everything works fine. All subsequent download only syncs work fine. If I configure the application to do a download only sync instead of a bidirectional sync, everything works fine. However, if I try to switch over to a bidirectional sync, the upload step does not work. Instead of uploading data, my server returns a 404, even though my sync clients have been able to locate the service just fine every other time.

  Here is the relevant portion of my Web.config:

  <services>
      <service name="Services.Services.DataCacheSyncService"
               behaviorConfiguration="default">
          <endpoint binding="wsHttpBinding"
                    contract="Synchronization.Services.Contracts.IDataCacheSyncContract" />
    </service>
  </services>

  Here is the SVC file used to access the service:

  <%@ ServiceHost Service="Services.Services.DataCacheSyncService" %>

  And here are my data contracts:

  [ServiceContract]
  public interface IDataCacheSyncContract : IDataCacheUploadContract, IDataCacheDownloadContract
  {
  }
  
  [ServiceContract]
  public interface IDataCacheUploadContract : IDataCacheContract
  {
      [FaultContract(typeof(string))]
      [OperationContract]
      SyncContext ApplyChanges(SyncGroupMetadata groupMetadata, DataSet dataSet, SyncSession syncSession);
  }
  
  [ServiceContract]
  public interface IDataCacheDownloadContract : IDataCacheContract
  {
      [FaultContract(typeof(string))]
      [OperationContract]
      SyncContext GetChanges(SyncGroupMetadata groupMetadata, SyncSession syncSession);
  }
  
  [ServiceContract]
  public interface IDataCacheContract
  {
      [OperationContract]
      SyncSchema GetSchema(IEnumerable<string> tableNames, SyncSession syncSession);
  
      [OperationContract]
      SyncServerInfo GetServerInfo(SyncSession syncSession);
  }

  Tuesday, March 27, 2012 10:51 PM