The GIOP snoop plug-in allows GIOP segments to be traced as they pass to and from Orbix applications.

 

Below is a selection points to look out for when configuring Snoop logging, along with their corresponding error messages. Please note: Most of these error messages will only be printed if the logging sub-system is enabled.

 

 

# The "giop_snoop" plug-in must be placed between the "giop" and "iiop" plug-ins in the ORB plug-in list.

 

 orb_plugins = [... "giop", "giop_snoop", "iiop" ...];

 

Failing to do so will result in an "InvalidNAme" exception, similar to the following:

 

  (IT_CORE:200) E - could not resolve initial reference for IT_GIOP_ServerFactoryManager: not registered or configured

  Unexpected CORBA exception: InvalidName (IDL:omg.org/CORBA/ORB/InvalidName:1.0)

  Server exiting

 

 

# The GIOP_SNOOP factory must be listed before the "GIOP IIOP" binding in the client-side bindings list. Failing to do so will produce no additional output from the GIOP snoop plug-in.

 

  binding:client_binding_list = [... "GIOP GIOP_SNOOP IIOP", "GIOP IIOP" ...];

 

 

# Similarly, the GIOP_SNOOP factory must be listed before the "GIOP" binding in the server-side bindings list. Failing to do so will produce no additional output from the GIOP snoop plug-in.

 

  plugins:giop:message_server_binding_list = [... "GIOP_SNOOP GIOP", "GIOP" ...];

 

 

# If the GIOP Snoop plug-in configuration settings are made in the global scope, please ensure the corresponding configuration adjustments have also been made in the "iona_services" scope. Typically, the orb_plugins configuration variable is redefined within the services' scope and does not include the giop_snoop plug-in by default.

 

  If the GIOP Snoop plug-in configuration settings are made in the global scope, and overridden in a lower scope, the following error would be reported:

 

  (IT_GIOP:32) ? - The GIOP server side message interceptor factory 'GIOP_SNOOP' specified in configuration setting

 'plugins:giop:message_server_binding_list' is unknown.

 Unexpected CORBA exception: IDL:omg.org/CORBA/INITIALIZE:1.0: minor = 0x49540201

 (IT_GIOP:SERVER_BINDING_LIST_UNKNOWN_FACTORY), completion status = NO

 Server exiting


For more information on Snoop logging, please see the Orbix Administrator's Guide.