Databases
StackOverflow2013
Postsdbo
PONSInputStream's NSStreamEventHasBytesAvailable never gets called
 

Note that there are some explanatory texts on larger screens.

plurals
  1. PONSInputStream's NSStreamEventHasBytesAvailable never gets called
    primarykey
    data
    text
    <p>I am creating an app similar to WiTap (but to connect many devices) and here is my problem: The application seems to connect the devices (they are displayed in table view controller. The delegate of <code>NSInput/OutputStream</code> says both streams are opened but when I send packet to <code>NSOutputStream</code> than the function on opposite device with <code>NSInputStream</code> doesn't get called <code>(NSStreamEventHasBytesAvailible</code> in <code>- (void)stream:(NSStream *)aStream handleEvent:(NSStreamEvent)eventCode)</code>.</p> <p>Here is the code that is doing the connection and sending and receiving ...</p> <pre><code>//Service was resolved - (void)netServiceDidResolveAddress:(NSNetService *)netService { //Get the streams from NSNetService NSInputStream *inStream = nil; NSOutputStream *outStream = nil; [netService getInputStream:&amp;inStream outputStream:&amp;outStream]; [inStream setDelegate:self]; [inStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes]; [inStream open]; [outStream setDelegate:self]; [outStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes]; [outStream open]; [self.inStreams addObject:inStream]; [self.outStreams addObject:outStream]; //Add NSNetService between connected devices [self.resolvedServices addObject:netService]; [self updateUI]; } //event handling - (void)stream:(NSStream *)aStream handleEvent:(NSStreamEvent)eventCode { switch (eventCode) { case NSStreamEventHasBytesAvailable: { NSMutableData *inBuffer = [[NSMutableData alloc] init]; NSInputStream *inStream = (NSInputStream *)aStream; uint8_t buffer[3]; NSInteger len = 0; NSInteger packetNumber = 0; len = [inStream read:buffer maxLength:3]; if(len &gt; 0) { [inBuffer appendBytes:buffer length:len]; [inBuffer getBytes:&amp;packetNumber length:len]; [self.delegate stream:inStream didReceivePacketNumber:[NSNumber numberWithInteger:packetNumber]]; } } break; case NSStreamEventHasSpaceAvailable: if ([aStream isKindOfClass:[NSOutputStream class]]) NSLog(@"NSStream \"%@\" has space availible",aStream); break; case NSStreamEventOpenCompleted: if ([aStream isKindOfClass:[NSInputStream class]]) NSLog(@"NSInputStream opened"); else if ([aStream isKindOfClass:[NSOutputStream class]]) NSLog(@"NSOutputStream opened"); break; case NSStreamEventErrorOccurred: NSLog(@"NSStream \"%@\" occurred an error: %@",aStream,[aStream streamError]); break; case NSStreamEventEndEncountered: NSLog(@"Stream \"%@\" has been closed",aStream); [aStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes]; [aStream close]; NSUInteger index = 0; if ([aStream isKindOfClass:[NSOutputStream class]]) { index = [self.outStreams indexOfObject:aStream]; [self.outStreams removeObject:aStream]; [self.inStreams removeObjectAtIndex:index]; } else if ([aStream isKindOfClass:[NSInputStream class]]) { index = [self.inStreams indexOfObject:aStream]; [self.inStreams removeObject:aStream]; [self.outStreams removeObjectAtIndex:index]; } [self.availibleServices removeObjectAtIndex:index]; [self.resolvedServices removeObjectAtIndex:index]; break; default: break; } } //sending //Data pushing into NSStreams - (void)sendData:(NSData *)data toStream:(NSOutputStream *)aStream { if ([aStream hasSpaceAvailable]) { NSLog(@"%i",[aStream write:[data bytes] maxLength:[data length]]); } } </code></pre> <p>I tried to debug the project using Instruments (the network thing). It says packet is send and received but the event never occurs. Thank you for your help. If anyone wants I have no problem sending the whole project ...</p>
    singulars
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PTQuestion
    1. USJack
    1. USipek
    plurals
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. VO
      singulars
      1. PONSInputStream's NSStreamEventHasBytesAvailable never gets called
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
      singulars
      1. PONSInputStream's NSStreamEventHasBytesAvailable never gets called
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
      singulars
      1. PONSInputStream's NSStreamEventHasBytesAvailable never gets called
      1. This table or related slice is empty.
      1. VTUpMod
    1. COcan you get any other events? Did you set your delegate?
      singulars
      1. PONSInputStream's NSStreamEventHasBytesAvailable never gets called
      1. USyeesterbunny
    2. COYes delegates are set and not nill ... and the event NSStreamEventOpenCompleted gets called but not NSStreamEventHasBytesAvailible.
      singulars
      1. PONSInputStream's NSStreamEventHasBytesAvailable never gets called
      1. USipek
    3. COWhere do you write your data? Where is your code for [outStream hasSpaceAvailable] and [outStream write: someData maxLength: someDataLength]
      singulars
      1. PONSInputStream's NSStreamEventHasBytesAvailable never gets called
      1. USyeesterbunny
 

Querying!

 
Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload