I am trying to read large Image file more than 300KB from NSInputStream. But i'm getting only upto 300KB. Other data are missing. Could you please help me if you know. i'm waiting for your valuable answer. I mentioned my code below : Call this readAllData method from NSStreamEventsHasBytesAvailable:

- (void)readAllData {

if ( _readData == nil) {
_readData = [[NSMutableData data] retain];
}

while ([[ _session inputStream] hasBytesAvailable])
{
unsigned   int bytesRead = 0;
bytesRead = [[ _session inputStream] read:buf maxLength: @"1024"];

if (bytesRead) {

    NSMutableString * _string = [NSMutableString stringWithString:@""];
    for (int i = 0; i < _readData.length; i++) {
        unsigned char _byte;
        [&#95;readData getBytes:&&#95;byte range:NSMakeRange(i, 1)];
        i f ( _byte >= 32 && _byte < 127) {
            [ _string appendFormat:@"%c", _byte];
        } else {
            [ _string appendFormat:@"[%d]", _byte];
        }
    }

    [ _readData appendBytes:(const void *)buf length:bytesRead];

}

}

  NSString *string=[NSString stringWithFormat:@"%d", _readData.length];
 UIAlertView *sesView = [[UIAlertView alloc] initWithTitle:@"readDatalength"
                                              message:string
                                             delegate:self
                                    cancelButtonTitle:nil otherButtonTitles:@"OK"  , nil];
 [sesView show];
  }