Objective C TCP Socket

Question

I am trying to get my head around the objective c tcp socket to connect to server, I've used the code from those two tutorials: https://www.raywenderlich.com/3932/networking-tutorial-for-ios-how-to-create-a-socket-based-iphone-app-and-server and https://gist.github.com/rjungemann/446256. I noticed that when I am trying to send the data out its not send until I stop the application (at which point is received on the server), same behaviour when following both tutorials, below relevant code:

- (void)setup {
    NSURL *url = [NSURL URLWithString:host];

    NSLog(@"Setting up connection to %@ : %i", [url absoluteString], port);

    CFStreamCreatePairWithSocketToHost(kCFAllocatorDefault, (__bridge CFStringRef)[url host], port, &readStream, &writeStream);

    if(!CFWriteStreamOpen(writeStream)) {
        NSLog(@"Error, writeStream not open");

        return;
    }
    [self open];

    NSLog(@"Status of outputStream: %lu", (unsigned long)[outputStream streamStatus]);

    return;
}

- (void)writeOut:(NSString *)s {
    uint8_t *buf = (uint8_t *)[s UTF8String];

    [outputStream write:buf maxLength:strlen((char *)buf)];

    NSLog(@"Writing out the following:");
    NSLog(@"%@", s);
}

Answer 1

Read on mother post, try adding \r\n to the string