ASIHTTPRequest POST Response

Aridif · December 2009

Hi, I'm having trouble getting a response (or even sending data) with my application. I'm a real noob, so please bear with me ;) I'm using the ASIHTTPRequest. The setup is so that when i press a button, the response will show up in a label.

- (IBAction)pReSsEd:(id)sender {
	NSURL *url = [NSURL URLWithString:@\"http://www.some-site.org\"]; 
	
	ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
	[request setPostValue:@\"Ben\" forKey:@\"ctl00_cphContent_txtFirstname\"];
	[request setPostValue:@\"Copsey\" forKey:@\"ctl00_cphContent_txtLastname\"];
	
	NSError *error = [request error];
	if (!error) {
		NSString *response = [request responseString];
		sTaTuS.text = response;
	}
	else {
		sTaTuS.text = @\"Phail!\";
	}
}

So I have these questions;

1. The form on the site has method = post (according to the source code). the different boxes, first name and last name, has both a "name" and an "id". Which one whould i use after "forKey"?

2. Am I using the error correct?

3. Will the response thing work, as I have written it now?

Huge thanks if you answer any of these questions :D

/Johan

jsd · December 2009

You never started the request. Add a [request start]; after the last setPostValue.

Aridif · December 2009

jsd;148288 said:
You never started the request. Add a [request start]; after the last setPostValue.

Thanks for the reply! I've updated the code to look lite this;

- (IBAction)pReSsEd:(id)sender {
	NSURL *url = [NSURL URLWithString:@\"http://www.birthday.se/sok\"]; 
	
	ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
	[request setRequestMethod:@\"GET\"];
	[request setPostValue:@\"Johan\" forKey:@\"ctl00$cphContent$txtFirstname\"];
	[request setPostValue:@\"Svensson\" forKey:@\"ctl00$cphContent$txtLastname\"];
	[request start];
	
	NSError *error = [request error];
	if (!error) {
		NSString *response = [request responseString];
		sTaTuS.text	= response;
	}
	else {
		sTaTuS.text	= @\"Phail!\";
	}
}

But it still gives me the Phail! message...

(also updated the code with the real url)

Got any ideas?

jsd · December 2009

You need to print the actual error message. Instead of Phail, put [error localizedDescription]

Aridif · December 2009

jsd;148315 said:
You need to print the actual error message. Instead of Phail, put [error localizedDescription]

Thanks, now i get the message; "Unable to obtain information on proxy servers needed..."

Changed the line to:

sTaTuS.text = [error localizedDescription];

Appreciate your help ;)

jsd · December 2009

Weird, that sounds like some sort of network configuration problem. I ran the code just now and I got "ErrorIncorrect function.
"

Aridif · December 2009

jsd;148379 said:
Weird, that sounds like some sort of network configuration problem. I ran the code just now and I got "ErrorIncorrect function.
"

Strange, but do you know what your error means?

jsd · December 2009

Looks like the web server doesn't like whatever you're trying to feed it. Probably some missing hidden parameter or something like that.

Aridif · December 2009

Ok, I screwed up a bit, the code should be without the "[request setRequestMethod:@"GET"];" part. Forgot to remove it when I tested a few things...

Here is the real deal, would you mind to run it again? :)

- (IBAction)pReSsEd:(id)sender {
    NSURL *url = [NSURL URLWithString:@\"http://www.birthday.se/sok\"];
    
    ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
    [request setPostValue:@\"Johan\" forKey:@\"ctl00$cphContent$txtFirstname\"];
    [request setPostValue:@\"Svensson\" forKey:@\"ctl00$cphContent$txtLastname\"];
    [request start];
    
    NSError *error = [request error];
    if (!error) {
        NSString *response = [request responseString];
        sTaTuS.text    = response;
    }
    else {
        sTaTuS.text    = [error localizedDescription];
    }
}

jsd · December 2009

Same error.

Aridif · December 2009

Hi, tried on my netbook instead, and got the same error as you. Then i added a / in the end of the url, and got a different error message! Making progress ;)

EDIT: It's not a error! I's actually a real connection to the server! Thank you for the help, you are awesome! :D

EDIT2: Ok, I now have a response from the server, but the response seems to be the source code of the side before I have made the search, and not after. Do you have any ideas?

jsd · December 2009

There's a hidden form variable called __VIEWSTATE that probably has something to do with it. Your best bet would be to trace what a real web browser posts to that form, use something like the Charles Debugging Proxy.

Aridif · December 2009

Not sure if i'm following you, but here is the url when I have searched for "Johan Svensson":

http://www.birthday.se/sok/?f=johan&l=svensson

it ads first a "?" and then f (for fistname) = johan & l (last) = svensson.

Don't really know what i whould do with it...

jsd · December 2009

I can't read swedish so I don't know what the point of that site is, but I'm guessing you want to simulate entering data into that form and clicking the submit button. If so, you are on the right track, but you need to make your form post contain all the variables that a real web browser would submit. If you look at the source of that page you'll see some hidden form fields in the form. If you don't pass those, I'm guessing that's what makes the server generate the Invalid Operation message. So you're gonna need to do some detective work to figure out exactly what's going on when you hit submit in your web browser, and try to mimic it using ASIFormDataRequest parameters. Good luck!

RyanW · December 2009

Aridif;148447 said:
Not sure if i'm following you, but here is the url when I have searched for "Johan Svensson":
http://www.birthday.se/sok/?f=johan&l=svensson
it ads first a "?" and then f (for fistname) = johan & l (last) = svensson.

Don't really know what i whould do with it...

Is the website a PHP written website? If so you would use
$var = $_GET["f"];

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