How to get AirPort Connection Status

• Rashmi Vyshnavi How to get AirPort Connection Status Sep 18 2008, 06:50
  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
• Jason Coco Re: How to get AirPort Connection Status Sep 18 2008, 10:40
  On Sep 18, 2008, at 00:50 , 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
  > --
  >
  

  [...]
  

  >
  > --
  > Am able to get connection status if I connect to a modem, but it
  > fails when
  > connected
  > to a WiFi/AirPort network.
  

  
  According to the documentation, the SCNetworkConnection API currently
  only works with PPP.
• Michael Ash Re: How to get AirPort Connection Status Sep 18 2008, 17:21
  On Thu, Sep 18, 2008 at 12:50 AM, Rashmi Vyshnavi
  <rashmivyshnavi...> 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
  

  
  I am not greatly familiar with them, but it looks like you could use
  the SC Reachability API to get notified of when a host becomes
  reachable or unreachable. If wifi is your only internet connection
  then any remote host will become unreachable when you disconnect, and
  reachable when you connect.
  
  Mike
• Bob Clark Re: How to get AirPort Connection Status Sep 18 2008, 22:45
  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
  
• Rashmi Vyshnavi Re: How to get AirPort Connection Status Oct 02 2008, 12:55
  Thanks for the help..
  
  On Fri, Sep 19, 2008 at 2:15 AM, Bob Clark <bobclark...> wrote:
  
  

  > 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
  >>
  >
  >
  >
  

  
  --
  Rashmi Vyshnavi