python-twisted server with iphone client for gpio

I came across an iphone app where you can control the gpio pins on a raspberry pi. I am now trying to replicate this in a html format so that the gpio pins on a raspberry pi are controllable from a web page too and not just an iphone app.

the server side code is as follows

from twisted.inteet.protocol import Protocol, Factory
from twisted.inteet import reactor

import RPi.GPIO as GPIO

GPIO.setmode(GPIO.BOARD) ## Use board pin numbering
GPIO.setup(7, GPIO.OUT) ## Setup GPIO Pin 7 to OUT

class RaspberryLight(Protocol):
    def coectionMade(self):
        #self.transport.write("""coected""")
        self.factory.clients.append(self)
        print "clients are ", self.factory.clients

    def coectionLost(self, reason):
        print "coection lost ", self.factory.clients
        self.factory.clients.remove(self)


    def dataReceived(self, data):
            msg = ""

            if (data == 'P7H'):
                msg = "Pin 7 is now High"
                GPIO.output(7, True)

            elif (data == 'P7L'):
                msg = "Pin 7 is now Low"
                GPIO.output(7, False)


            print msg

factory = Factory()
factory.protocol = RaspberryLight
factory.clients = []

reactor.listenTCP(5000, factory)
print "RaspberryLight server started"
reactor.run()

the iphone app client side of the code is as follows (viewcontroller.m)

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];

    [self initNetworkCommunication];

    //used so that when you minimize the app it inits the the network again.
    [[NSNotificationCenter defaultCenter] addObserver:self
                                             selector:@selector(applicationEnteredForeground:)
                                                 name:UIApplicationWillEnterForegroundNotification
                                               object:nil];

    _lightToggle.selectedSegmentIndex = 1;


    _logo.layer.coerRadius = _logo.frame.size.width / 2;
    _logo.clipsToBounds = YES;
    _logo.layer.borderColor = [[UIColor whiteColor] CGColor];
    _logo.layer.borderWidth = 6;

//    CAGradientLayer *gradient = [CAGradientLayer layer];
//    gradient.frame = self.view.bounds;
//   gradient.colors = [NSArray arrayWithObjects:(id)[[UIColor colorWithRed:(2/255.0f) green:(160/255.0f) blue:(224/255.0f) alpha:1] CGColor], (id)[[UIColor whiteColor] CGColor], nil];
   // [self.view.layer insertSublayer:gradient atIndex:0];

    self.view.backgroundColor = [UIColor colorWithRed:(2/255.0f) green:(160/255.0f) blue:(224/255.0f) alpha:1];
}

- (void)applicationEnteredForeground:(NSNotification *)notification {
    [self initNetworkCommunication];
}
- (void)didReceiveMemoryWaing
{
    [super didReceiveMemoryWaing];
    // Dispose of any resources that can be recreated.
}

- (void)initNetworkCommunication {
    CFReadStreamRef readStream;
    CFWriteStreamRef writeStream;
    CFStreamCreatePairWithSocketToHost(NULL, (CFStringRef)@"192.168.0.117", 5000, &readStream, &writeStream);
    _inputStream = (NSInputStream *)CFBridgingRelease(readStream);
    _outputStream = (NSOutputStream *)CFBridgingRelease(writeStream);

    [_inputStream setDelegate:self];
    [_outputStream setDelegate:self];

    [_inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
    [_outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];

    [_inputStream open];
    [_outputStream open];

}

- (IBAction)ToggleLight:(id)sender {

    UISegmentedControl *button = ((UISegmentedControl*)sender);
    long tag = button.tag;

    NSString *response  = [NSString stringWithFormat:@"P%ld%@", tag , button.selectedSegmentIndex?@"H" : @"L"];
    NSData *data = [[NSData alloc] initWithData:[response dataUsingEncoding:NSASCIIStringEncoding]];
    [_outputStream write:[data bytes] maxLength:[data length]];

}

- (IBAction)shutdown:(id)sender {

    NSData *data = [[NSData alloc] initWithData:[@"shutdown" dataUsingEncoding:NSASCIIStringEncoding]];
    [_outputStream write:[data bytes] maxLength:[data length]];

}

- (IBAction)reboot:(id)sender {

    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"REBOOT?" message:@"Are you sure you want to reboot?" delegate:self cancelButtonTitle:@"OH.. Hell No!" otherButtonTitles:@"I said REBOOT!", nil];

    [alert show];

}

- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{

    if(buttonIndex == 1){

        NSData *data = [[NSData alloc] initWithData:[@"reboot" dataUsingEncoding:NSASCIIStringEncoding]];
        [_outputStream write:[data bytes] maxLength:[data length]];
        NSLog(@"YES %@",data);
    }
}

- (IBAction)reset:(id)sender {
    [self initNetworkCommunication];
}

@end

if, for example i would like to tu gpio pin 7 high or low, the command needs to be/contain "P7H" and "P7L" respectively, however, looking at this function

def dataReceived(self, data):
        msg = ""

        if (data == 'P7H'):
            msg = "Pin 7 is now High"
            GPIO.output(7, True)

        elif (data == 'P7L'):
            msg = "Pin 7 is now Low"
            GPIO.output(7, False)


        print msg

My question is what exactly is the format in which data should be sent? Since the arguments are "(self, data)" I cant just send "P7H" or "P7L" as the response I get is "undefined"

Assuming i want to simply tu pin 7 on, what would the command be? and what exactly is the format of "self" and what does it mean?