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Re: How to get AirPort Connection Status

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Re: How to get AirPort Connection Status

Subject: Re: How to get AirPort Connection Status
From: Bob Clark <email@hidden>
Date: Thu, 18 Sep 2008 13:45:35 -0700

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, &currentServiceId, &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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References:  
  >How to get AirPort Connection Status (From: "Rashmi Vyshnavi" <email@hidden>)




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