Parsing packets in a stream

gistfile1.m

- (void) parseData:(NSData *)data {
	
	[savedData appendData:data];
	
	NSUInteger index = 0;
	NSUInteger length = [savedData length];
	uint8_t * bytes = (uint8_t *) [savedData bytes];
	
	NSUInteger packetIndex;
	
	while (index < length) {
		packetIndex = index;
		
		// Parsing
	}
	
	[savedData replaceBytesInRange:NSMakeRange(0, [savedData length]) withBytes:NULL length:0];
	
	return;
	
FAILED:
	if (packetIndex < length)
		[savedData replaceBytesInRange:NSMakeRange(0, packetIndex) withBytes:NULL length:0];
}