It always crash when I click scan button.

[yuchin067]

Hi Albert,
I try to run wsdiscovery sample code on iOS 9.3.2 in iPad with Xcode 7.3, but it always crash when I click scan button.
Here is log message before it crash:

MAC 020000000000
gpLocalAddr is set to 10.0.0.87, MAC is 020000000000
Opening multicast client socket 4 for ip 10.0.0.87...OK.
Setting the local interface...OK
Opening multicast server socket 5 for ip 239.255.255.250...OK.
Setting SO_REUSEADDR...OK.
setsockopt IP_ADD_MEMBERSHIP for 10.0.0.87 ...OK.
Binding port:3702 socket...OK.
Sending SendHello message...OK
Sending SendHello message...OK
Sending SendHello message...OK
/Users/ryan/Downloads/wsdiscovery-master/WSDiscovery/wsdiscovery_api.m -[WSDiscovery_API InitServer:] :202 nIndex=8 pSrc=10.0.0.87:53420, pDst=239.255.255.250
/Users/ryan/Downloads/wsdiscovery-master/WSDiscovery/wsdiscovery_api.m -[WSDiscovery_API InitServer:] :203 localaddr=10.0.0.87 port=53420
RecvThread start....
(lldb)

I can not find any reason for it to crash. Could you fix the issue?
Thanks.

[alb423]

hi yuchin,

which network interface you use? wifi, 3g, 4g?

please try wifi only to see if it can work correctly.

I will test it when I duty off.

On Tue, Jul 5, 2016 at 3:19 PM, yuchin067 notifications@github.com wrote:

Hi Albert,
I try to run wsdiscovery sample code on iOS 9.3.2 in iPad with Xcode 7.3,
but it always crash when I click scan button.
Here is log message before it crash:

MAC 020000000000
gpLocalAddr is set to 10.0.0.87, MAC is 020000000000

Opening multicast client socket 4 for ip 10.0.0.87...OK.
Setting the local interface...OK
Opening multicast server socket 5 for ip 239.255.255.250...OK.
Setting SO_REUSEADDR...OK.
setsockopt IP_ADD_MEMBERSHIP for 10.0.0.87 ...OK.
Binding port:3702 socket...OK.
Sending SendHello message...OK
Sending SendHello message...OK
Sending SendHello message...OK
/Users/ryan/Downloads/wsdiscovery-master/WSDiscovery/wsdiscovery_api.m
-[WSDiscovery_API InitServer:] :202 nIndex=8 pSrc=10.0.0.87:53420,
pDst=239.255.255.250
/Users/ryan/Downloads/wsdiscovery-master/WSDiscovery/wsdiscovery_api.m
-[WSDiscovery_API InitServer:] :203 localaddr=10.0.0.87 port=53420
RecvThread start....
(lldb)

I can not find any reason for it to crash. Could you fix the issue?
Thanks.

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[yuchin067]

Hi Albert,
Thanks for your response.
The network interface I used is wifi.

[yuchin067]

Hi Albert,
Is there any progress yet?
The issue is also appear on iPhone device.
When code run at "NSString *pCheck = [pWSDiscoveryDevice getDeviceName];", it will crash.

• (void)insertNewObject:(id)sender {
  WSDiscoveryDevice *pWSDiscoveryDevice ;
  if (!self.objects) {
  self.objects = [[NSMutableArray alloc] init];
  }

  if (!self.deviceIPList) {
  self.deviceIPList = [[NSMutableOrderedSet alloc] init];
  }

  if(sender!=nil)
  {
  pWSDiscoveryDevice = (WSDiscoveryDevice *)sender;
  }
  else
  {
  pWSDiscoveryDevice = [[WSDiscoveryDevice alloc]init];
  }

  *NSString pCheck = [pWSDiscoveryDevice getDeviceName];

  if([self.deviceIPList containsObject:pCheck])
  {
  NSLog(@"duplicate device name: %@", pCheck);
  return;
  }
  else
  {
  [self.deviceIPList addObject:[pWSDiscoveryDevice getDeviceName]];
  }

  [self.objects insertObject:pWSDiscoveryDevice atIndex:0];

  NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:0];
  [self.tableView insertRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
  }

Thanks.

[alb423]

hi yuchin,
I cannot find the root cause, so I remove the iOS UI example.

On Mon, Jul 11, 2016 at 11:03 AM, yuchin067 notifications@github.com
wrote:

Hi Albert,
Is there any progress yet?
Thanks.

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[yuchin067]

Hi Albert,

I modified the sample code, it can show response message in the console now.
The modified as follows,

Original:

dispatch_async(GLOBAL_QUEUE, ^(void) {
        int vRet = 0;
        discoveryAgent = [[WSDiscovery_API alloc] init];
        vRet = [discoveryAgent InitServer:nil];
    });

dispatch_async(GLOBAL_QUEUE, ^(void) {
        sleep(10);
        [discoveryAgent InitClient:@"q" OptionCmd:nil];
    });

Modified:

dispatch_async(GLOBAL_QUEUE, ^(void) {
        sleep(10);
        discoveryAgent = [[WSDiscovery_API alloc] init];
        [discoveryAgent InitClient:@"2" OptionCmd:nil];
    });

Thanks.