Cookies Problems
Cookies Problems
- Subject: Cookies Problems
- From: Chris <email@hidden>
- Date: Sat, 1 Aug 2009 14:41:22 -0500
Hello
I am trying to write a test program that will send a value through a
web form, get the cookie information and then relay that cookie
information back to the sever. I have setup 3 php pages, which work
correctly. The first page displays a web form with one field named
"name". The second page "validates" the input, puts the "name"
variable into a session variable, then forwards you to the third page.
The third page checks for the session variable and then either
displays "You are logged in as: Bob" (using the $name / session
variable) or displays "failure". Each page also displays the SessionID
at the top of the screen.
When I run these PHP pages through a browser, it works as expected.
When I try to run this through Cocoa, I am able to retrieve the
Session Cookie, but when I call the data from the third page, I always
get a "failure" response, even though it seems to be relaying the
correct Session ID back to the server.
I have found many different articles online, but they all seem to be
giving the same basic code, which doesn't seem to work. I've tried
several different variations but I'm not sure where to go from here.
You can access the form at http://www.abovetheclamor.com/testform.php
Here are all the files I'm using:
### PHP 1 (testform.php) ###
<?PHP
session_start();
echo 'SESSIONID: ', session_id(), '<br>';
echo '<form method="POST" action="testform2.php">
<input type="text" name="name" size="20"><br>
<input type="submit">
</form>';
?>
### PHP 2 (testform2.php) ###
<?PHP
session_start();
echo 'SESSIONID: ', session_id(), '<br>';
$_SESSION['sessionvariable'] = $_POST['name'];
header("Location: testform3.php");
?>
### PHP 3 (testform3.php) ###
<?PHP
session_start();
echo 'SESSIONID: ', session_id(), '<br>';
if ($_SESSION['sessionvariable'] == NULL) {
echo 'failure on page 3';
exit;
} else {
echo 'You are logged in as: ';
echo $_SESSION['sessionvariable'];
}
?>
### Cocoa / Objective-C ###
- (void)applicationDidFinishLaunching:(UIApplication *)application {
NSHTTPURLResponse *response;
NSError *error;
NSString *post = @"name=Bob"; // send the value "Bob" to the
form
NSData *postData = [post
dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d",
[postData length]];
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc]
init] autorelease];
// setup the request to submit the data to the form
[request setURL:[NSURL URLWithString:@"http://www.abovetheclamor.com/testform.php
"]];
[request setHTTPMethod:@"POST"]; // run it as a POST
[request setValue:postLength forHTTPHeaderField:@"Content-
Length"];
[request setValue:@"application/x-www-form-urlencoded"
forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];
// run the request
NSURLConnection *theConnection = [[NSURLConnection alloc]
initWithRequest:request delegate:self];
// run the request to get the cookies
[NSURLConnection sendSynchronousRequest:request
returningResponse:&response error:&error];
// get allCookies from the request
NSArray *allCookies = [NSHTTPCookie
cookiesWithResponseHeaderFields: [response allHeaderFields]
forURL:[NSURL URLWithString:@"http://www.abovetheclamor.com/testform.php
"]];
NSLog(@"How many Cookies: %d", allCookies.count);
for (NSHTTPCookie *cookie in allCookies) {
NSLog(@"Name: %@ : Value: %@, Expires: %@",
cookie.name, cookie.value, ookie.expiresDate);
}
[[NSHTTPCookieStorage sharedHTTPCookieStorage]
setCookies:allCookies
forURL:[NSURL URLWithString:@"http://www.abovetheclamor.com/";]
mainDocumentURL:nil];
NSArray * availableCookies = [[NSHTTPCookieStorage
sharedHTTPCookieStorage] cookiesForURL:[NSURL URLWithString:@"http://www.abovetheclamor.com/
"]];
NSDictionary * headers = [NSHTTPCookie
requestHeaderFieldsWithCookies:availableCookies];
NSMutableURLRequest *req = [[NSMutableURLRequest alloc] init];
// set the request to call the final page
[req setURL:[NSURL URLWithString:@"http://www.abovetheclamor.com/
testform3.php"]];
[req setAllHTTPHeaderFields:headers];
[req setHTTPShouldHandleCookies:NO];
// send the request to the final page
NSData *data = [NSURLConnection sendSynchronousRequest:req
returningResponse:&response error:&error];
// what did the server get? probably "failure". why?
NSLog(@"The server saw: %@", [[[NSString alloc]
initWithData:data encoding: NSASCIIStringEncoding] autorelease]);
[window makeKeyAndVisible];
}
Any help or guidance that you can provide would be greatly appreciated
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