Posting user profile pic to twitter giving Error 131 - http

Question

When trying to post a users profile pic to twitter, I am getting Error code 131 response back:
2013-12-06 19:17:29.854 Tweetly[8131:60b] {
errors = (
{
code = 131;
message = "Internal error";
}
);
}
Twitters website lists this:
"Corresponds with an HTTP 500 - An unknown internal error occurred."
Here is my code:
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
//Code for store image
[picker dismissViewControllerAnimated:YES completion:nil];
UIImage *image = [info objectForKey:#"UIImagePickerControllerOriginalImage"];
UIImage *scaledImage = [self imageWithImage:image convertToSize:CGSizeMake(500, 500)];
NSData *imageData = [NSData dataWithData:UIImagePNGRepresentation(scaledImage)];
[self uploadPictureWithData:imageData];
}
- (UIImage *)imageWithImage:(UIImage *)image convertToSize:(CGSize)size {
UIGraphicsBeginImageContext(size);
[image drawInRect:CGRectMake(0, 0, size.width, size.height)];
UIImage *destImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return destImage;
}
- (void)uploadPictureWithData:(NSData *)imageData {
// Get the twitter feed
NSURL *requestURL = [NSURL URLWithString:#"https://api.twitter.com/1.1/account/update_profile_image.json"];
// Set up proper parameters
NSMutableDictionary *timelineParameters = [[NSMutableDictionary alloc] init];
[timelineParameters setObject:imageData forKey:#"image"];
[timelineParameters setObject:#"1" forKey:#"skip_status"];
// Create the Social Request
SLRequest *postRequest = [SLRequest requestForServiceType:SLServiceTypeTwitter requestMethod:SLRequestMethodPOST URL:requestURL parameters:timelineParameters];
postRequest.account = self.delegate.userAccount;
// Perform the request
[postRequest performRequestWithHandler:^(NSData *responseData, NSHTTPURLResponse *urlResponse, NSError *error) {
dispatch_async(dispatch_get_main_queue(), ^{
// Check if we reached the reate limit
if ([urlResponse statusCode] == 429) {
// Rate limit reached
// Display an alert letting the user know we have hit the rate limit
UIAlertView *twitterAlert = [[UIAlertView alloc] initWithTitle:kRateLimitTitle
message:kRateLimitMessage
delegate:nil
cancelButtonTitle:#"Ok"
otherButtonTitles:nil];
[twitterAlert show];
return;
}
// Check if there was an error
if (error) {
NSLog(#"Error: %#", error.localizedDescription);
return;
}
// Check if there is some response data
if (responseData) {
NSError *jsonError = nil;
NSMutableArray *feedData = [NSJSONSerialization JSONObjectWithData:responseData options:0 error:&jsonError];
if (!jsonError) {
// Check the response data
NSLog(#"%#", feedData);
} else {
// Alert the user with the error
UIAlertView *twitterAlert = [[UIAlertView alloc] initWithTitle:kErrorTitle
message:kErrorMessage
delegate:nil
cancelButtonTitle:#"Ok"
otherButtonTitles:nil];
[twitterAlert show];
}
} else {
// Alert the user with the error
UIAlertView *twitterAlert = [[UIAlertView alloc] initWithTitle:kErrorTitle
message:kErrorMessage
delegate:nil
cancelButtonTitle:#"Ok"
otherButtonTitles:nil];
[twitterAlert show];
}
});
}];
}
Any idea what the issue might be? I initially thought it was because the image was too big, so I added the method for scaling the image down to 500 x 500, but I get the same error.
This error happens while running on both the device and the simulator.
Does anyone see where the problem is or have any extra insight? Thanks!

Answer 1

In my tests, images larger than 1000x1000px are not downscaled synchronously, throwing the 131 response code. Undocumented, unfortunately.
Make sure the image is <700kb and smaller than 1000x1000px.
https://dev.twitter.com/rest/reference/post/account/update_profile_image