Protocol-specific topics, Tcp/ip notes, Protocol-specific topics 2 – Apple Network Setup User Manual
Page 49
C H A P T E R 2
Using Network Setup
Protocol-specific Topics
49
The solution to this problem is very simple: assume that all entity references in
a set refer to entities that are in the same area as the set. This has two practical
consequences.
■
When comparing two entity references that might have come from a set
entity, always pass
kOTCfgIgnoreArea
when calling
OTCfgIsSameEntityRef
. The
OTCfgIsSameEntityRef
function will then compare the entities as if they were
in the same area.
■
When opening an entity whose reference you have obtained from a set,
always call
OTCfgChangeEntityArea
to reset its area identifier to that of the
area in which you are working.
Listing 2-14 demonstrates this technique.
Protocol-specific Topics
2
This section contains hints and tips for working with the Network Setup
preferences of certain protocol stacks provided by Apple.
TCP/IP Notes
2
A TCP/IP network connection entity has a class of
kOTCfgClassNetworkConnection
and a type of
kOTCfgTypeTCPv4
. The entity must
contain the following preferences:
■
kOTCfgTCPInterfacesPref
, which contains the core TCP/IP configuration
information. For details, see the discussion below and
■
kOTCfgTCPDeviceTypePref
, which contains data needed by the current TCP/IP
control panel. For details, see
OTCfgTCPDeviceTypePref
Constants and Other Data Types” (page 160).
■
kOTCfgTCPRoutersListPref
, which contains the list of configured routers. For
details, see
■
kOTCfgTCPSearchListPref
, which contains the strings which make up the
implicit search path for DNS. For details, see