Problem sending images POST - iphone

Question

For several days, I look for what's wrong in my code but without success, and now I really want to know what's wrong.
The problem is that I want to send an UIImage from my Iphone to my server, but I receive a blank image on my server everytime... I'm not sure, but I think the problem come from the image that I convert. The UIImage come from the method takePicture.
Please check my code :
First I call takePicture and :
- (void)imagePickerController:(UIImagePickerController *)aPicker didFinishPickingMediaWithInfo:(NSDictionary *)info {
self.testImage = [info objectForKey:#"UIImagePickerControllerOriginalImage"];
}
testImage is a property of my ViewController.
Then I make this to send the UIImage :
NSData *imageData = [NSData dataWithData:UIImagePNGRepresentation(testImage)];
NSURL *url = [NSURL URLWithString:#"http://myserver/mytest.php"];
ASIFormDataRequest *request = [ASIFormDataRequest requestWithURL:url];
[request addData:imageData withFileName:#"tmp.png" andContentType:#"image/png" forKey:#"userfile"];
[request setRequestMethod:#"POST"];
[request setDelegate:self];
[request startAsynchronous];
and to see the result :
- (void)requestFinished:(ASIHTTPRequest *)request
{
// Use when fetching text data
NSString *responseString = [request responseString];
NSLog(#"response: %#", responseString);
// Use when fetching binary data
NSData *responseData = [request responseData];
}
- (void)requestFailed:(ASIHTTPRequest *)request
{
NSError *error = [request error];
NSLog(#"Request Failed Error: %#", error);
}
and then I receive a blank image on my server...
Please help me ='(

Answer 1

I think you're actually sending a URL encoded POST body, as opposed to a multi-part POST body, which is required to send data like you want. So you just need to do the following before you start the request:
request.postFormat = ASIMultipartFormDataPostFormat;

Answer 2

The issue came from the high resolution image. My connection was too slow. When I'm using wifi the code works.

Answer 3

Mate,
look at your code here:
NSData *imageData = [NSData dataWithData:UIImagePNGRepresentation(testImage)];
you can change the picture quality by adding a number in the bracket for the dpi you would like it to be, for example, if i wanted it to be in 90 dpi quality i would have written it like this: [NSData dataWithData:UIImagePNGRepresentation(testImage,90)]
i noticed now that your picture is in .PNG format , i always worked with .JPEG and it worked
so i think you should give it a try...
good luck