IPhone network software disconnection during sleep has been solved

IPhone NetworkSoftware inSleepDisconnection is the content of this article. If you want to useIPhoneOfNetworkFeature and persistent connection, and use Wifi, you may find a problem, that is, inIPhoneInSleepIf the connection is not established, the connection is interrupted.IPhoneUnofficial sdks)

The following code may help you solve this problem.

The following code is taken from MobileChat:

First, add the following code to the applicationDidFinishLaunching method:

 
 

  
  
 IONotificationPortRef notificationPort;  
  
  
root_port = IORegisterForSystemPower(self, &notificationPort, powerCallback, &notifier);  
  
  
CFRunLoopAddSource(CFRunLoopGetCurrent(), IONotificationPortGetRunLoopSource(notificationPor t), kCFRunLoopCommonModes);  
 
 

Then add the following global method to add it out of all classes)

 
 

  
  
void powerCallback(void *refCon, io_service_t service, natural_t messageType, void *messageArgument) {  
  
  
 [(YourAppnameApp*)refCon powerMessageReceived: messageType withArgument: messageArgument];  
  
  
} 
 
 

Add the following code to your program:

 
 

  
  
- (void)powerMessageReceived:(natural_t)messageType withArgument:(void *) messageArgument {  
  
  
 switch (messageType) {  
  
  
  case kIOMessageSystemWillSleep:  
  
  
   IOAllowPowerChange(root_port, (long)messageArgument);   
  
  
   break;  
  
  
  case kIOMessageCanSystemSleep:  
  
  
   //if([self wifiKeepAliveIsSet]) {  
  
  
   IOCancelPowerChange(root_port, (long)messageArgument);  
  
  
   //}  
  
  
   break;   
  
  
  case kIOMessageSystemHasPoweredOn:  
  
  
   break;  
  
  
 }  
  
  
} 
 
 

In this way, you can maintainIPhoneInNetworkNot connectedSleepOf course, it may be too expensive ).

Summary:IPhone NetworkSoftware inSleepThe problem disconnection has been solved. I hope this article will help you.