NAME
Attributes and Cntls -
UDP driver specific attrs and cntls.
Enumerations
enum globus_xio_udp_cmd_t { GLOBUS_XIO_UDP_SET_HANDLE,
GLOBUS_XIO_UDP_SET_SERVICE, GLOBUS_XIO_UDP_GET_SERVICE,
GLOBUS_XIO_UDP_SET_PORT, GLOBUS_XIO_UDP_GET_PORT,
GLOBUS_XIO_UDP_SET_LISTEN_RANGE, GLOBUS_XIO_UDP_GET_LISTEN_RANGE,
GLOBUS_XIO_UDP_SET_INTERFACE, GLOBUS_XIO_UDP_GET_INTERFACE,
GLOBUS_XIO_UDP_SET_RESTRICT_PORT, GLOBUS_XIO_UDP_GET_RESTRICT_PORT,
GLOBUS_XIO_UDP_SET_REUSEADDR, GLOBUS_XIO_UDP_GET_REUSEADDR,
GLOBUS_XIO_UDP_SET_NO_IPV6, GLOBUS_XIO_UDP_GET_NO_IPV6,
GLOBUS_XIO_UDP_GET_HANDLE, GLOBUS_XIO_UDP_SET_SNDBUF,
GLOBUS_XIO_UDP_GET_SNDBUF, GLOBUS_XIO_UDP_SET_RCVBUF,
GLOBUS_XIO_UDP_GET_RCVBUF, GLOBUS_XIO_UDP_GET_CONTACT,
GLOBUS_XIO_UDP_GET_NUMERIC_CONTACT, GLOBUS_XIO_UDP_SET_CONTACT,
GLOBUS_XIO_UDP_CONNECT, GLOBUS_XIO_UDP_SET_MULTICAST }
Functions
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_HANDLE, globus_xio_system_socket_t handle)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_SERVICE, const char *service_name)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_SERVICE, char **service_name_out)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_PORT, int listener_port)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_PORT, int *listener_port_out)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_LISTEN_RANGE, int listener_min_port, int
listener_max_port)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_LISTEN_RANGE, int *listener_min_port_out, int
*listener_max_port_out)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_INTERFACE, const char *interface)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_INTERFACE, char **interface_out)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_RESTRICT_PORT, globus_bool_t restrict_port)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_RESTRICT_PORT, globus_bool_t *restrict_port_out)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_REUSEADDR, globus_bool_t resuseaddr)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_REUSEADDR, globus_bool_t *resuseaddr_out)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_NO_IPV6, globus_bool_t no_ipv6)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_NO_IPV6, globus_bool_t *no_ipv6_out)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_HANDLE, globus_xio_system_socket_t *handle_out)
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_GET_HANDLE, globus_xio_system_socket_t *handle_out)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_SNDBUF, int sndbuf)
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_SET_SNDBUF, int sndbuf)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_SNDBUF, int *sndbuf_out)
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_GET_SNDBUF, int *sndbuf_out)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_RCVBUF, int rcvbuf)
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_SET_RCVBUF, int rcvbuf)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_RCVBUF, int *rcvbuf_out)
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_GET_RCVBUF, int *rcvbuf_out)
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_GET_CONTACT, char **contact_string_out)
globus_result_t globus_xio_data_descriptor_cntl (dd, driver,
GLOBUS_XIO_UDP_GET_CONTACT, char **contact_string_out)
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_GET_NUMERIC_CONTACT, char **contact_string_out)
globus_result_t globus_xio_data_descriptor_cntl (dd, driver,
GLOBUS_XIO_UDP_GET_NUMERIC_CONTACT, char **contact_string_out)
globus_result_t globus_xio_data_descriptor_cntl (dd, driver,
GLOBUS_XIO_UDP_SET_CONTACT, char *contact_string)
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_CONNECT, char *contact_string)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_MULTICAST, char *contact_string)
Detailed Description
UDP driver specific attrs and cntls.
See also:
globus_xio_attr_cntl()
globus_xio_handle_cntl()
globus_xio_data_descriptor_cntl()
Enumeration Type Documentation
enum globus_xio_udp_cmd_t
doxygen varargs filter stuff UDP driver specific cntls
Enumerator:
GLOBUS_XIO_UDP_SET_HANDLE
See usage for: globus_xio_attr_cntl .
GLOBUS_XIO_UDP_SET_SERVICE
See usage for: globus_xio_attr_cntl .
GLOBUS_XIO_UDP_GET_SERVICE
See usage for: globus_xio_attr_cntl .
GLOBUS_XIO_UDP_SET_PORT
See usage for: globus_xio_attr_cntl .
GLOBUS_XIO_UDP_GET_PORT
See usage for: globus_xio_attr_cntl .
GLOBUS_XIO_UDP_SET_LISTEN_RANGE
See usage for: globus_xio_attr_cntl .
GLOBUS_XIO_UDP_GET_LISTEN_RANGE
See usage for: globus_xio_attr_cntl .
GLOBUS_XIO_UDP_SET_INTERFACE
See usage for: globus_xio_attr_cntl .
GLOBUS_XIO_UDP_GET_INTERFACE
See usage for: globus_xio_attr_cntl .
GLOBUS_XIO_UDP_SET_RESTRICT_PORT
See usage for: globus_xio_attr_cntl .
GLOBUS_XIO_UDP_GET_RESTRICT_PORT
See usage for: globus_xio_attr_cntl .
GLOBUS_XIO_UDP_SET_REUSEADDR
See usage for: globus_xio_attr_cntl .
GLOBUS_XIO_UDP_GET_REUSEADDR
See usage for: globus_xio_attr_cntl .
GLOBUS_XIO_UDP_SET_NO_IPV6
See usage for: globus_xio_attr_cntl .
GLOBUS_XIO_UDP_GET_NO_IPV6
See usage for: globus_xio_attr_cntl .
GLOBUS_XIO_UDP_GET_HANDLE
See usage for: globus_xio_attr_cntl , globus_xio_handle_cntl .
GLOBUS_XIO_UDP_SET_SNDBUF
See usage for: globus_xio_attr_cntl , globus_xio_handle_cntl .
GLOBUS_XIO_UDP_GET_SNDBUF
See usage for: globus_xio_attr_cntl , globus_xio_handle_cntl .
GLOBUS_XIO_UDP_SET_RCVBUF
See usage for: globus_xio_attr_cntl , globus_xio_handle_cntl .
GLOBUS_XIO_UDP_GET_RCVBUF
See usage for: globus_xio_attr_cntl , globus_xio_handle_cntl .
GLOBUS_XIO_UDP_GET_CONTACT
See usage for: globus_xio_handle_cntl ,
globus_xio_data_descriptor_cntl .
GLOBUS_XIO_UDP_GET_NUMERIC_CONTACT
See usage for: globus_xio_handle_cntl ,
globus_xio_data_descriptor_cntl .
GLOBUS_XIO_UDP_SET_CONTACT
See usage for: globus_xio_data_descriptor_cntl .
GLOBUS_XIO_UDP_CONNECT
See usage for: globus_xio_handle_cntl .
GLOBUS_XIO_UDP_SET_MULTICAST
See usage for: globus_xio_attr_cntl .
Function Documentation
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_HANDLE, globus_xio_system_socket_t handle)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Set the udp socket to use. Parameters:
handle Use this handle (fd or SOCKET). Note: close() will not be
called on this handle.
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_SERVICE, const char * service_name)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Set the udp service name to listen on. Parameters:
service_name The service name to use when setting up the listener.
If the service name cannot be resolved, the port (if one is set)
will be used instead.
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_SERVICE, char ** service_name_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the service name to listen on. Parameters:
service_name_out A pointer to the service name will be stored here
If none is set, NULL will be passed back. Otherwise, the name will
be duplicated with strdup() and the user should call free() on it.
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_PORT, int listener_port)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Set the port number to listen on. The default is 0 (system assigned)
Parameters:
listener_port The port number to use when setting up the listener.
If the service name is also set, this will only be used if that
can’t be resolved.
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_PORT, int * listener_port_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
the port number to listen on. Parameters:
listener_port_out The port will be stored here.
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_LISTEN_RANGE, int listener_min_port, int
listener_max_port)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Set the port range to confine the listener to. Used only where no
specific service or port has been set. It overrides the range set in
the GLOBUS_UDP_PORT_RANGE env variable. If ’restrict port’ is true, the
listening port will be constrained to the range specified.
Parameters:
listener_min_port The lower bound on the listener port. (default 0
-- no bound)
listener_max_port The upper bound on the listener port. (default 0
-- no bound)
See also:
GLOBUS_XIO_UDP_SET_RESTRICT_PORT
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_LISTEN_RANGE, int * listener_min_port_out, int *
listener_max_port_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the udp port range on an attr. Parameters:
listener_min_port_out The lower bound will be stored here.
listener_max_port_out The upper bound will be stored here.
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_INTERFACE, const char * interface)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Set the interface to bind the socket to. Parameters:
interface The interface to use. Can be a hostname or numeric IP
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_INTERFACE, char ** interface_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the interface on the attr. Parameters:
interface_out A pointer to the interface will be stored here If one
is set, NULL will be passed back. Otherwise, the interface will be
duplicated with strdup() and the user should call free() on it.
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_RESTRICT_PORT, globus_bool_t restrict_port)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Enable or disable the listener range constraints. This enables or
ignores the port range found in the attr or in then env. By default,
those ranges are enabled.
Parameters:
restrict_port GLOBUS_TRUE to enable (default), GLOBUS_FALSE to
disable.
See also:
GLOBUS_XIO_UDP_SET_LISTEN_RANGE
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_RESTRICT_PORT, globus_bool_t * restrict_port_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the restrict port flag. Parameters:
restrict_port_out The restrict port flag will be stored here.
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_REUSEADDR, globus_bool_t resuseaddr)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Reuse addr when binding. Used to determine whether or not to allow
reuse of addresses when binding a socket to a port number.
Parameters:
resuseaddr GLOBUS_TRUE to allow, GLOBUS_FALSE to disallow (default)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_REUSEADDR, globus_bool_t * resuseaddr_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the reuseaddr flag on an attr. Parameters:
resuseaddr_out The reuseaddr flag will be stored here.
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_NO_IPV6, globus_bool_t no_ipv6)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Restrict to IPV4 only. Disallow IPV6 sockets from being used (default
is to use either ipv4 or ipv6)
Parameters:
no_ipv6 GLOBUS_TRUE to disallow ipv6, GLOBUS_FALSE to allow
(default)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_NO_IPV6, globus_bool_t * no_ipv6_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the no ipv6 flag on an attr. Parameters:
no_ipv6_out The no ipv6 flag will be stored here.
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_HANDLE, globus_xio_system_socket_t * handle_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the socket handle on an attr or handle. Parameters:
handle_out The udp socket will be stored here. If none is set,
GLOBUS_XIO_UDP_INVALID_HANDLE will be set.
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_GET_HANDLE, globus_xio_system_socket_t * handle_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the socket handle on an attr or handle. Parameters:
handle_out The udp socket will be stored here. If none is set,
GLOBUS_XIO_UDP_INVALID_HANDLE will be set.
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_SNDBUF, int sndbuf)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Set the socket send buffer size. Used to set the size of the send
buffer used on the socket.
Parameters:
sndbuf The send buffer size in bytes to use. (default is system
specific)
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_SET_SNDBUF, int sndbuf)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Set the socket send buffer size. Used to set the size of the send
buffer used on the socket.
Parameters:
sndbuf The send buffer size in bytes to use. (default is system
specific)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_SNDBUF, int * sndbuf_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the send buffer size on the attr or handle. Parameters:
sndbuf_out The send buffer size will be stored here.
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_GET_SNDBUF, int * sndbuf_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the send buffer size on the attr or handle. Parameters:
sndbuf_out The send buffer size will be stored here.
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_RCVBUF, int rcvbuf)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Set the socket receive buffer size. Used to set the size of the receive
buffer used on the socket.
Parameters:
rcvbuf The receive buffer size in bytes. (default is system
specific)
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_SET_RCVBUF, int rcvbuf)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Set the socket receive buffer size. Used to set the size of the receive
buffer used on the socket.
Parameters:
rcvbuf The receive buffer size in bytes. (default is system
specific)
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_GET_RCVBUF, int * rcvbuf_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the receive buffer size on the attr or handle. Parameters:
rcvbuf_out The receive buffer size will be stored here.
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_GET_RCVBUF, int * rcvbuf_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the receive buffer size on the attr or handle. Parameters:
rcvbuf_out The receive buffer size will be stored here.
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_GET_CONTACT, char ** contact_string_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the contact string associated with a handle or data descriptor. Use
with globus_xio_handle_cntl() to get a contact string for the udp
listener. Use with globus_xio_data_descriptor_cntl() to get the
sender’s contact string from a data descriptor passed to
globus_xio_register_read().
Parameters:
contact_string_out A pointer to a contact string will be stored
here. The user should free() it when done with it. It will be in
the format: <hostname>:<port>
See also:
GLOBUS_XIO_GET_LOCAL_CONTACT
globus_result_t globus_xio_data_descriptor_cntl (dd, driver,
GLOBUS_XIO_UDP_GET_CONTACT, char ** contact_string_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the contact string associated with a handle or data descriptor. Use
with globus_xio_handle_cntl() to get a contact string for the udp
listener. Use with globus_xio_data_descriptor_cntl() to get the
sender’s contact string from a data descriptor passed to
globus_xio_register_read().
Parameters:
contact_string_out A pointer to a contact string will be stored
here. The user should free() it when done with it. It will be in
the format: <hostname>:<port>
See also:
GLOBUS_XIO_GET_LOCAL_CONTACT
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_GET_NUMERIC_CONTACT, char ** contact_string_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the contact string associated with a handle or data descriptor. Use
with globus_xio_handle_cntl() to get a contact string for the udp
listener. Use with globus_xio_data_descriptor_cntl() to get the
sender’s contact string from a data descriptor passed to
globus_xio_register_read().
Parameters:
contact_string_out A pointer to a contact string will be stored
here. The user should free() it when done with it. It will be in
the format: <ip>:<port>
See also:
GLOBUS_XIO_GET_LOCAL_NUMERIC_CONTACT
globus_result_t globus_xio_data_descriptor_cntl (dd, driver,
GLOBUS_XIO_UDP_GET_NUMERIC_CONTACT, char ** contact_string_out)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Get the contact string associated with a handle or data descriptor. Use
with globus_xio_handle_cntl() to get a contact string for the udp
listener. Use with globus_xio_data_descriptor_cntl() to get the
sender’s contact string from a data descriptor passed to
globus_xio_register_read().
Parameters:
contact_string_out A pointer to a contact string will be stored
here. The user should free() it when done with it. It will be in
the format: <ip>:<port>
See also:
GLOBUS_XIO_GET_LOCAL_NUMERIC_CONTACT
globus_result_t globus_xio_data_descriptor_cntl (dd, driver,
GLOBUS_XIO_UDP_SET_CONTACT, char * contact_string)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Set the destination contact. Use on a data descriptor passed to
globus_xio_register_write() to specify the recipient of the data. This
is necessary with unconnected handles or to send to recipients other
than the connected one.
Parameters:
contact_string A pointer to a contact string of the format
<hostname/ip>:<port/service>
See also:
GLOBUS_XIO_UDP_CONNECT
globus_result_t globus_xio_handle_cntl (handle, driver,
GLOBUS_XIO_UDP_CONNECT, char * contact_string)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Set the default destination contact. Connecting a handle to a specific
contact blocks packets from any other contact. It also sets the default
destination of all outgoing packets so, using
GLOBUS_XIO_UDP_SET_CONTACT is unnecessary.
Parameters:
contact_string A pointer to a contact string of the format
<hostname/ip>:<port/service>
globus_result_t globus_xio_attr_cntl (attr, driver,
GLOBUS_XIO_UDP_SET_MULTICAST, char * contact_string)
This is an overloaded member function, provided for convenience. It
differs from the above function only in what argument(s) it accepts.
Join a multicast group. Specifiy a multicast group to join. All packets
received will be to the specified multicast address. Do not use
GLOBUS_XIO_UDP_CONNECT, GLOBUS_XIO_UDP_SET_PORT, or pass a contact
string on the open. Consider using GLOBUS_XIO_UDP_SET_REUSEADDR to
allow other apps to join this group. Use GLOBUS_XIO_UDP_SET_INTERFACE
to specify the interface to use. Will not affect handles set with
GLOBUS_XIO_UDP_SET_HANDLE. GLOBUS_XIO_UDP_SET_RESTRICT_PORT is ignored.
Parameters:
contact_string A pointer to a contact string of the multicast group
to join with the format: <hostname/ip>:<port/service>
Author
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