Parse REST API uploading binary image data in Objective-C - objective-c

Question

I am getting a 500 error back when trying to send image data to the REST API
NSMutableURLRequest *parseRequest = [NSMutableURLRequest requestWithURL:url];
[parseRequest setHTTPMethod:#"POST"];
[parseRequest setValue:#“*****” forHTTPHeaderField:#"X-Parse-Application-Id:"];
[parseRequest setValue:#“*****” forHTTPHeaderField:#"X-Parse-REST-API-Key:"];
[parseRequest setValue:#"image/png" forHTTPHeaderField:#"Content-Type:"];
NSLog(#"All Headers: %#",[parseRequest allHTTPHeaderFields]);
NSData *imageData = [[NSData alloc]initWithData:[NSData dataFromBase64String:data]];
[parseRequest setHTTPBody:imageData];
NSURLResponse *theResponse = NULL;
NSError *theError = NULL;
NSError *theJSONError = NULL;
NSData *theResponseData = [NSURLConnection sendSynchronousRequest:parseRequest returningResponse:&theResponse error:&theError];
NSString *responseString = [[NSString alloc]initWithData:theResponseData encoding:NSUTF8StringEncoding];
NSDictionary *dataDictionaryResponse = [NSJSONSerialization JSONObjectWithData:theResponseData options:NSJSONReadingAllowFragments error:&theJSONError];
NSLog(#“Url to send request: %#“,url);
NSLog(#“Response String: %#",responseString);
NSLog(#"Response Error: %#",theError);
This returns :
All Headers:
{
"Content-Type:" = "image/png";
"X-Parse-Application-Id:" = *****;
"X-Parse-REST-API-Key:" = *****;
}
Url to send request: https://api.parse.com/1/files/pic2.png
Response String: *HTML page with 500 error*
Response Error: (null)
I'm assuming that it doesn't like the binary data being passed as the HTTPBody but as I'm not getting any error messages back it's hard to tell what's going on. Making the same request with CURL works fine.

Answer 1

try like this
NSMutableURLRequest *parseRequest = [NSMutableURLRequest requestWithURL:url];
[parseRequest setCachePolicy:NSURLRequestReloadIgnoringLocalCacheData];
[parseRequest setHTTPShouldHandleCookies:NO];
[parseRequest setTimeoutInterval:30];
[parseRequest setHTTPMethod:#"POST"];
// set Content-Type in HTTP header
NSString *contentType = [NSString stringWithFormat:#"multipart/form-data; boundary=%#", boundary];
[request setValue:contentType forHTTPHeaderField: #"Content-Type"];
// post body
NSMutableData *body = [NSMutableData data];
// add params (all params are strings)
[body appendData:[[NSString stringWithFormat:#"--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"%#\"\r\n\r\n", param] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"%#\r\n", [_params objectForKey:param]] dataUsingEncoding:NSUTF8StringEncoding]];
// add image data
NSData *imageData = UIImageJPEGRepresentation(imageToPost, 1.0);
if (imageData) {
[body appendData:[[NSString stringWithFormat:#"--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"%#\"; filename=\"image.jpg\"\r\n", FileParamConstant] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:#"Content-Type: image/jpeg\r\n\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:imageData];
[body appendData:[[NSString stringWithFormat:#"\r\n"] dataUsingEncoding:NSUTF8StringEncoding]];
}
[body appendData:[[NSString stringWithFormat:#"--%#--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
// setting the body of the post to the reqeust
[parseRequest setHTTPBody:body];
// set URL
[parseRequest setURL:requestURL];