I found this page to be helpful:
http://developer.apple.com/qa/qa2001/qa1133.html
It's about the currently-logged in user, but the MyNotificationProc
callback is called for a lot of changes, including IIRC the network
connection transitions.
In the callback function you can do something like this:
NSArray* arr = (NSArray*)changedKeys;
NSLog(@"changed keys %@", [arr description]);
to sort of figure out what kinds of information you're getting.
--Bob
--
Bob Clark
Lead Software Development Engineer
RealPlayer Mac/Unix
RealNetworks, Inc.
On Sep 17, 2008, at 9:50 PM, Rashmi Vyshnavi wrote:
I want to know when my computer connects/disconnects to WiFi/AirPort
network.
Is there a way to get the status of connection to a WiFi network. I
tried
using System Configuration API,but I could not get the status. Here
is the
snippet
--
static void MyNetworkConnectionCallBack(SCNetworkConnectionRef
connection,SCNetworkConnectionStatus stat,void *info)
{
printf("Call back called \n");
SCNetworkConnectionStatus status =
SCNetworkConnectionGetStatus(connection);
switch(status) {
case kSCNetworkConnectionInvalid:
printf("Connection invalid\n");
break;
case kSCNetworkConnectionDisconnected:
printf("Connection disconnected\n");
break;
case kSCNetworkConnectionConnecting:
printf("Connection connecting\n");
break;
case kSCNetworkConnectionConnected:
printf("Connection connected\n");
break;
case kSCNetworkConnectionDisconnecting:
printf("Connection disconnecting\n");
break;
}
}
int main (int argc, const char * argv[]) {
CFDictionaryRef userOptions;
bool scResult;
SCNetworkConnectionContext scncctx = {0, NULL, NULL, NULL, NULL};
CFStringRef currentServiceId;
scResult = SCNetworkConnectionCopyUserPreferences(NULL,
¤tServiceId,
&userOptions);
SCNetworkConnectionRef connection = nil;
connection = SCNetworkConnectionCreateWithServiceID (NULL,
currentServiceId,
MyNetworkConnectionCallBack, &scncctx );
SCNetworkConnectionStatus status =
SCNetworkConnectionGetStatus(connection);
if(status == kSCNetworkConnectionConnected)
printf("connected \n");
else
printf("current status :%d\n", status);
SCNetworkConnectionScheduleWithRunLoop
(connection,CFRunLoopGetCurrent(),kCFRunLoopDefaultMode);
CFRunLoopRun();
return 0;
}
--
Am able to get connection status if I connect to a modem, but it
fails when
connected
to a WiFi/AirPort network.
Thanks,
Rashmi
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