synchronously send requests to an ip at a specific port ios - ios

Question

I want to send requests to a server in my network. The first thing I did was to get my IP address. ex. 196.168.16.* . Now that I have my IP address I'll have to send request to all IP in the network with those with listening ports,ex. port 49160. So what i did was to send requests from 192.168.16.1 to 192.168.16.255 and if an IP has a listening port of 49160 they will receive my request. Then a prompt will appear to the PC ... by the way my server is a PC .. then the PC user will accept it,then i will receive a return message from them. I am able to send request in a static manner.but when i try to loop the method im using it doenst work.
Here are sample codes:
static IOStreamHelper *_sharedInstance = nil;
+ (IOStreamHelper*)sharedInstance
{
if (_sharedInstance == nil) {
_sharedInstance = [[IOStreamHelper alloc] init];
}
return _sharedInstance;
}
-(void)initWithIpAddress:(CFStringRef)ipAddr port:(int)port
{
NSString*str = (__bridge_transfer NSString*)ipAddr;
NSLog(#"initWithIP:%#:%i",str,port);
CFReadStreamRef readStream;
CFWriteStreamRef writeStream;
CFStreamCreatePairWithSocketToHost(NULL, (CFStringRef)ipAddr, port, &readStream, &writeStream);
inputStream = (__bridge_transfer NSInputStream *)readStream;
outputStream = (__bridge_transfer NSOutputStream *)writeStream;
[inputStream setDelegate:self];
[outputStream setDelegate:self];
[inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
[inputStream open];
[outputStream open];
}
-(void)sendStringRequest
{
NSString*space = [NSString stringWithFormat:#"%#",[NSByteCountFormatter stringFromByteCount:[self getFreeDiskspace] countStyle:NSByteCountFormatterCountStyleFile]];
NSString *message = [NSString stringWithFormat:#"fishtune_c;%#(%#),1092809312741,jyce09#gmail.com,%#;",[self platformString],[[GetIpAndMacAddress sharedInstance] getMacAddress],space];
messageData = [[NSData alloc] initWithData:[message dataUsingEncoding:NSUTF8StringEncoding]];
[outputStream write:[messageData bytes] maxLength:[messageData length]];
}
- (void)stream:(NSStream *)theStream handleEvent:(NSStreamEvent)streamEvent
{
NSLog(#"stream event %i", streamEvent);
switch (streamEvent) {
case NSStreamEventOpenCompleted:
NSLog(#"Stream opened");
break;
case NSStreamEventHasBytesAvailable:
if (theStream == inputStream) {
uint8_t buffer[1024];//1024
int len;
while ([inputStream hasBytesAvailable]) {
len = [inputStream read:buffer maxLength:sizeof(buffer)];
if (len > 0) {
NSString *output = [[NSString alloc] initWithBytes:buffer length:len encoding:NSUTF8StringEncoding];
if (nil != output) {
NSLog(#"server reply: %#", output);
}
}
}
}
break;
case NSStreamEventHasSpaceAvailable:
NSLog(#"Stream has space available now");
[self sendStringRequest];
break;
case NSStreamEventErrorOccurred:
{
NSLog(#"Can not connect to the host!");
NSError *theError = [theStream streamError];
NSLog(#"%#",[NSString stringWithFormat:#"%#",[theError localizedDescription]]);
}
break;
case NSStreamEventEndEncountered:
[theStream close];
[theStream removeFromRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
theStream = nil;
break;
default:
NSLog(#"Unknown event");
}
}
Then i call this method .This is the method that i want to iterate from 1 to 255:
CFStringRef aCFString = (__bridge CFStringRef)#"IPfrom 1 to 255";
[[IOStreamHelper sharedInstance] initWithIpAddress:aCFString port:49160];
I want to know how to iterate this properly. Thanks