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POAsynchronous POST to server
 

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    <p>The goal is to do a simple username/password authentication by querying a database. Until the connection is working decently my php destination file simply has following code:</p> <pre><code>echo "Posted: " . $_POST['email']; </code></pre> <p>The code to do this synchronously is this:</p> <pre><code>NSString *post = [[NSString alloc] initWithFormat:@"email=%@&amp;password=%@", self.email.text, ..]; // .. simplified keychainItem NSData *postEncoded = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:NO]; NSString *postLength = [NSString stringWithFormat:@"%d", [postEncoded length]]; NSURL *url = [NSURL URLWithString:@"http://eng.studev.groept.be/web2.0/a11_web02/improver/app/testPost"]; NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init]; [request setURL:url]; [request setHTTPMethod:@"POST"]; [request setValue:postLength forHTTPHeaderField:@"Content-Length"]; [request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"]; [request setHTTPBody:postEncoded]; NSError *error = nil; NSURLResponse *response = nil; NSData *encodedData = [NSURLConnection sendSynchronousRequest:request returningResponse:&amp;response error:&amp;error]; NSString *data=[[NSString alloc]initWithData:encodedData encoding:NSUTF8StringEncoding]; NSLog(@"Data? %@",data); </code></pre> <p>The correct value is shown as an echo. But when trying to do this asynchronously, I get following php error: "Undefined index: email". I try to start the asynchronous request with this line:</p> <pre><code>[[NSURLConnection connectionWithRequest:request delegate:self] start]; </code></pre> <p>Then, I have the delegate method connection:didReceiveResponse, but there I cannot seem to get the data out... Or do I need another delegate method? Also, how 'safe' is it to check the result of your query by using just an echo (do I need/want a stream maybe?) ??</p> <p>Tia</p> <p><strong>EDIT</strong></p> <p>Problem related to the server, not to objective-C code. Asked a new question to reach the correct audience: <a href="https://stackoverflow.com/questions/8071149/post-remaining-empty">$_POST remaining empty</a></p>
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