How to use the CORBA-Loc URL option to for getting the name service.
- From: Rahul Agrawal <rahula sonoasystems com>
- To: orbit-list gnome org
- Subject: How to use the CORBA-Loc URL option to for getting the name service.
- Date: Thu, 14 Jul 2005 15:53:50 +0530
I have the follwoing setup:
ORBit2-2.12.2 on Linux 2.6/FC3
Naming server running a win2k box using jdk1.5
Server program (C ) running on linux
Sample programs are being attempted to run from :
http://www.gnome.org/projects/ORBit2/orbit-docs.tar.gz
----------------------------------------------------------------------
I brought up the naming server on win2k using the follwoing command:
orbd -ORBInitialPort 1050 -ORBInitialHost 192.168.10.43 (the ip
address of my win2k box)
The naming service comes up .
I use a java client on the win2k box to get the IOR of the naming
service which comes out to be
IOR:000000000000002849444c3a6f6d672e6f72672f436f734e616d696e672f4e616d696e67436f6e746578743a312e30000000000100000000000000b0000102000000000e3139322e3136382e31302e34330004190000003cafabcb0000000022000003e800000001000000000000000200000008526f6f74504f41000000000c4e616d655365727669636500000000034e43301400000003000000010000002000000000000100010000000205010001000100200001010900000001000101000000002600000002000200000000000300000018000000000000000e3139322e3136382e31302e343300041a
I start the C server program using the following:
./seqarrtest-server
-ORBInitRef=NameService=IOR:000000000000002849444c3a6f6d672e6f72672f436f734e616d696e672f4e616d696e67436f6e746578743a312e30000000000100000000000000b0000102000000000e3139322e3136382e31302e34330004190000003cafabcb0000000022000003e800000001000000000000000200000008526f6f74504f41000000000c4e616d655365727669636500000000034e43301400000003000000010000002000000000000100010000000205010001000100200001010900000001000101000000002600000002000200000000000300000018000000000000000e3139322e3136382e31302e343300041a
| |
The C server code is attached with the email
With the above steps I can bringup the server and bind my server object
successfully.
However if I try to use the following to start my server
./seqarrtest-server
-ORBNamingIOR=corbaloc:iiop://1 2 192 168 10 43:1050/NameService
I am unable to bind my server object to the name service.
I get the following exception:
** ERROR **: failed binding of service IDL:omg.org/CORBA/INV_OBJREF:1.0
If any one has used the human readable CORBA-Loc URL for the
nameservice then please let me know how to use it.
I have tried all the options mentioned @
http://www.gnome.org/projects/ORBit2/orbit-faq/faq/faq.html
under section ---
Which parameters are supported by CORBA_ORB_init() ?
*
*ORBNamingIOR=IOR* (Available for ORBit2.8) Define specific
reference of NameService, ie. on command line define reference of
NameService by -ORBNamingIOR=IOR:010000002800000.., or as human
readable CORBA-Loc URL
-ORBNamingIOR=corbaloc:iiop:gnome.org:8884/NameService%00. The
suffix %00 terminates the char-sequence forming a C-string. If
used in combination with option ORBInitRef, the option ORBInitRef
dominates.
*
*ORBInitRef=Id=IOR* (Available for ORBit2.8) Define initial
reference of generic service, ie. on command line define reference
of NameService by -ORBInitRef=NameService=IOR:010000002800000..
None of these seem to work for me.
Thanks
Rahul
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
fyi:
I am running this as a root user:
and
/etc/orbitrc has these entries:
ORBIIOPIPv4=1
ORBIIOPIPv6=0
ORBIIOPUNIX=0
ORBIIOPUSock=0
ORBCorbaloc=1
ORBDebugFlags=traces:refs:inproc_traces
__________________________________________________________________________________________________________________
My server code:
#include "examples-toolkit.h" /* provides etk_abort_if_exception */
int
main (int argc, char *argv[])
{
CORBA_Object servant = CORBA_OBJECT_NIL;
CosNaming_NamingContext name_service = CORBA_OBJECT_NIL;
gchar *id[] = {"AEAuthService", NULL};
//CORBA_char filename[] = "echo.ref";
CORBA_Environment ev[1];
CORBA_exception_init(ev);
server_init (&argc, argv, &global_orb, &root_poa, ev);
etk_abort_if_exception(ev, "failed ORB init");
servant = server_activate_service (global_orb, root_poa, ev);
etk_abort_if_exception(ev, "failed activating service");
g_print ("Binding service reference at name service against id:
%s\n", id[0]);
name_service = etk_get_name_service (global_orb,
ev);
etk_abort_if_exception(ev, "failed resolving name-service");
g_print("name service mil gaya\n\n");
g_print("Attempt to bind ......ALL THE BEST .......\n");
etk_name_service_bind (name_service, servant, id, ev);
etk_abort_if_exception(ev, "failed binding of service");
/*
#include "examples-toolkit.h"
/**
* test @ev for exception
*/
gboolean
etk_raised_exception(CORBA_Environment *ev)
{
return ((ev)->_major != CORBA_NO_EXCEPTION);
}
/**
* test @ev for exception
*/
gboolean
etk_raised_exception_is_a (CORBA_Environment *ev, CORBA_char* id)
{
return ((ev)->_major != CORBA_NO_EXCEPTION) &&
strcmp(id, CORBA_exception_id(ev)) == 0;
}
/**
*
*/
void
etk_abort_if_exception (CORBA_Environment *ev, const char* mesg)
{
if (etk_raised_exception (ev)) {
g_error ("%s %s", mesg, CORBA_exception_id (ev));
CORBA_exception_free (ev);
abort();
}
}
/**
*
*/
void
etk_ignore_if_exception (CORBA_Environment *ev, const char* mesg)
{
if (etk_raised_exception (ev)) {
g_warning ("%s %s", mesg, CORBA_exception_id (ev));
CORBA_exception_free (ev);
}
}
/**
*
*/
void
etk_export_object_to_stream (CORBA_ORB orb,
CORBA_Object servant,
FILE *stream,
CORBA_Environment *ev)
{
CORBA_char *objref = NULL;
/* write objref to file */
objref = CORBA_ORB_object_to_string (orb, servant, ev);
if (etk_raised_exception(ev)) return;
/* print ior to terminal */
fprintf (stream, "%s\n", objref);
fflush (stream);
CORBA_free (objref);
}
/* Writes stringified object reference of @servant to file
* @filename. If error occures @ev points to exception object on
* return.
*/
void
etk_export_object_to_file (CORBA_ORB orb,
CORBA_Object servant,
char *filename,
CORBA_Environment *ev)
{
CORBA_char *objref = NULL;
FILE *file = NULL;
/* write objref to file */
if ((file=fopen(filename, "w"))==NULL)
g_error ("could not open %s\n", filename);
/* print ior to stream */
etk_export_object_to_stream (orb, servant, file, ev);
fclose (file);
}
/**
*
*/
static gchar*
etk_read_string_from_stream (FILE *stream)
{
gulong length = 4*1024; /* should suffice ordinary IOR string */
gchar *objref = g_malloc0 (length*sizeof(gchar)); /* empty string */
int c = 0;
int i = 0;
/* skip leading white space */
while((c=fgetc(stream))!=EOF && g_ascii_isspace(c));
/* POST: c==EOF or c=first character */
if (c!=EOF)
/* PRE: c=first character */
/* append c to string while more c exist and c not white space */
do {
/* check size */
if (i>=(length-1)) {
length*=2;
objref=g_realloc (objref, length);
}
objref[i++] = c;
} while ((c=fgetc(stream))!=EOF && !g_ascii_isspace(c));
/* POST: first string read */
/* terminate string with \0 */
objref[i] = '\0';
/* INV: objref valid string, #objref>=0 */
return objref;
}
/**
*
*/
CORBA_Object
etk_import_object_from_stream (CORBA_ORB orb,
FILE *stream,
CORBA_Environment *ev)
{
CORBA_Object obj = CORBA_OBJECT_NIL;
gchar *objref=etk_read_string_from_stream (stream);
if (!objref || strlen (objref)==0) {
g_warning ("empty object reference");
if (objref)
g_free (objref);
return CORBA_OBJECT_NIL;
}
obj = (CORBA_Object) CORBA_ORB_string_to_object (orb,
objref,
ev);
free (objref);
return obj;
}
/**
*
*/
CORBA_Object
etk_import_object_from_file (CORBA_ORB orb,
CORBA_char *filename,
CORBA_Environment *ev)
{
CORBA_Object obj = NULL;
FILE *file = NULL;
/* write objref to file */
if ((file=fopen(filename, "r"))==NULL)
g_error ("could not open %s\n", filename);
obj= etk_import_object_from_stream (orb, file, ev);
if (obj==CORBA_OBJECT_NIL)
g_warning ("object is NIL");
fclose (file);
return obj;
}
/**
*/
CosNaming_NamingContext
etk_get_name_service (CORBA_ORB orb,
CORBA_Environment *ev)
{
CORBA_char *str=NULL;
CORBA_Object ref
= (CORBA_Object) CORBA_ORB_resolve_initial_references(orb,
"NameService",
ev);
if (etk_raised_exception(ev)) return CORBA_OBJECT_NIL;
return (CosNaming_NamingContext) ref;
}
/** calculate length of NULL terminated string vector */
static
guint
id_vec_len (char *id_vec[])
{
gint i=0;
for (i = 0; id_vec[i]; ++i);
return i;
}
/* binds @servant object reference to unique @name at
* @name_service. If error occures @ev points to exception object on
* return.
*/
void
etk_name_service_bind (CosNaming_NamingContext name_service,
CORBA_Object servant,
gchar *id_vec[],
CORBA_Environment *ev)
{
gint i = 0;
gint len = id_vec_len (id_vec);
/* Allocate a CosNaming::Name (sequence of CosNaming::NameComponent) */
CosNaming_Name *name = CosNaming_Name__alloc();
name->_buffer = CORBA_sequence_CosNaming_NameComponent_allocbuf(len);
name->_maximum = len;
name->_length = 0;
/* Relinquish ownership of the NameComponent to the
* sequence. When CORBA_free is called on it later, the
* NameComponent will be freed */
CORBA_sequence_set_release (name, TRUE);
/* iterate components of name and create sub-context
* (directory) if needed */
for (i = 0; i < len; ++i) {
name->_length = i+1;
name->_buffer[i].id = CORBA_string_dup(id_vec[i]);
name->_buffer[i].kind = CORBA_string_dup("");
/* don't know what 'kind' shall be good for */
if (name->_length < len)
{
/* create a sub-context */
CosNaming_NamingContext nc =
CosNaming_NamingContext_bind_new_context (name_service,
name,
ev);
if (etk_raised_exception_is_a (ev,
ex_CosNaming_NamingContext_AlreadyBound))
{
/* ignore - ctx allread exists, this
* is not dramatic */
CORBA_exception_free (ev);
}
else if (etk_raised_exception (ev))
{
/* critical - unexpected exception */
CORBA_free (name);
return;
}
}
else
{
/* Bind object to last context - use 'rebind'
* operation in case the name has been
* registered allready in context - note, this
* might interfere with other service choosing
* same name */
CosNaming_NamingContext_rebind (name_service,
name,
servant,
ev);
if (etk_raised_exception(ev)) {
/* critical - can not bind object */
CORBA_free (name);
return;
}
}
}
CORBA_free (name);
return;
}
CORBA_Object
etk_name_service_resolve (CosNaming_NamingContext name_service,
gchar *id_vec[],
CORBA_Environment *ev)
{
CORBA_Object retval = CORBA_OBJECT_NIL;
gint i = 0;
gint len = id_vec_len (id_vec);
/* Allocate a CosNaming::Name (sequence of CosNaming::NameComponent) */
CosNaming_Name *name = CosNaming_Name__alloc();
g_assert (id_vec_len (id_vec) > 0);
name->_buffer = CORBA_sequence_CosNaming_NameComponent_allocbuf(len);
name->_maximum = len;
name->_length = 0;
/* Relinquish ownership of the NameComponent to the
* sequence. When CORBA_free is called on it later, the
* NameComponent will be freed */
CORBA_sequence_set_release (name, TRUE);
/* iterate components of name and create sub-context
* (directory) if needed */
for (i = 0; i < len; ++i) {
name->_length = i+1;
name->_buffer[i].id = CORBA_string_dup(id_vec[i]);
name->_buffer[i].kind = CORBA_string_dup("");
/* don't know what 'kind' shall be good for */
}
retval = CosNaming_NamingContext_resolve (name_service,
name,
ev);
if (etk_raised_exception (ev)) {
CORBA_free (name);
return CORBA_OBJECT_NIL;
}
return retval;
}
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