Http request from C# to Objective C - ios

Question

first of all I am sorry for this kind of questions, I am a little confused with Objective C,
the function I am trying to write is to upload image to a server using web service, I have already dine it using C# but it I cann't figuir out what is the problem in my objective-C code
the C# code is:
using(var wb=new WebClient){
var Data=new NameValueCollection();
data["image"]=base64(fileName)/*base64 is a function to convert the image with"file name" to base64 string*/
Uri myUri=new Uri("http://localHost:8080/test2/sss/users/1/uploadImage");
var respose=wb.UploadValues(myUri,"Post",Data)
}
the Objective-C code I am trying to use:
NSData* data = UIImageJPEGRepresentation(theImageView.image, 1.0f);
[Base64 initialize];
NSString *strEncoded = [Base64 encode:data];
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
[request setHTTPMethod:#"POST"];
[request setURL:[NSURL URLWithString:#"http://localHost:8080/test2/sss/users/1/uploadImage"]];
NSData* image= [strEncoded dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES ];
NSLog(#"%#",strEncoded);
[request setHTTPBody:image];
(void)[NSURLConnection connectionWithRequest:request delegate:self];
sorry again but the problem is that I don't Know if I am matching the parameters right

Answer 1

You don't have to base64 encode the date, but use the right content type for your request. I didn't understand your problem, but here is my working method:
- (NSURLConnection *)connectionByFormUploadingData:(NSData *)data toURL:(NSURL *)url withFileName:(NSString *)fileName forFieldName:(NSString *)fieldName delegate:(id)delegate {
NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:url];
[request setHTTPMethod:#"POST"];
NSString *boundary = [[NSProcessInfo processInfo] globallyUniqueString];
[request addValue:[NSString stringWithFormat:#"multipart/form-data; boundary=%#", boundary] forHTTPHeaderField:#"Content-Type"];
NSMutableData *postData = [[NSMutableData alloc] initWithData:[[NSString stringWithFormat:#"--%#\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:[[NSString stringWithFormat:#"Content-Disposition: form-data; name=\"%#\"; filename=\"%#\"\r\n\r\n", fieldName, fileName ?: #"empty_file_name"] dataUsingEncoding:NSUTF8StringEncoding]];
[postData appendData:data];
[postData appendData:[[NSString stringWithFormat:#"\r\n--%#--\r\n", boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[request setHTTPBody:postData];
return [[NSURLConnection alloc] initWithRequest:request delegate:delegate startImmediately:NO];
}
EDIT
Assumed you use PHP, you save the data like this:
move_uploaded_file($_FILES['fieldName']['tmp_name'], $upload_dir.'/'.$_FILES['fieldName']['name']);
EDIT II
The last boundary in the HTTP body must be terminated using two hyphens as described in RFC1341, thanks to CouchDeveloper for this improvement!

Answer 2

Try encoding your data a bit differently:
[strEncoded dataUsingEncoding:NSUTF8StringEncoding]