iOS Audio File and POST to Mojolicious Web Service

Audio.pm

package MyApp::Controller::Audio;

use Mojo::Base 'Mojolicious::Controller';

sub save {
  my $self = shift;

  # get contents of the audio upload in memory
  my $upload_audio_asset = $self->tx->req->content->asset;
  
  my $save_audio_dir = '/path/to/audio/files';

  # build save audio path
  my $upload_audio_file = "$save_audio_dir/audio_upload.wav";

  # move to final location
  $upload_audio_asset->move_to($upload_audio_file);
  
  $self->render(json => { status => 'OK', audio_filename => $upload_audio_file });
}

ViewController.m

    // load settings.plist file
    NSString* path = [[NSBundle mainBundle] pathForResource:@"settings" ofType:@"plist"];
    NSDictionary* settings = [[NSDictionary alloc] initWithContentsOfFile:path];
    NSString* upload_audio_url = [settings objectForKey:@"upload_audio_url"];
    
    NSURL *upload_url = [NSURL URLWithString:upload_audio_url];
    
    // setup POST request
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] initWithURL:upload_url];
    [request setHTTPMethod:@"POST"];
    [request setCachePolicy:NSURLRequestUseProtocolCachePolicy];
    [request setTimeoutInterval:120.0];
    [request setValue:@"audio/x-wav;codec=pcm;bit=16;rate=16000" forHTTPHeaderField:@"Content-Type"];
    
    // new session with defaults and use main queue
    NSURLSessionConfiguration *config = [NSURLSessionConfiguration defaultSessionConfiguration];
    NSURLSession *session = [NSURLSession sessionWithConfiguration:config
                                                          delegate:nil
                                                     delegateQueue:[NSOperationQueue mainQueue]];
    // POST audio file
    NSURLSessionUploadTask *uploadTask =
    [session uploadTaskWithRequest:request
                          fromFile:self.soundFileURL
                 completionHandler:^(NSData *data, NSURLResponse *response,NSError *error) {
                     // Handle response here
                     if(error) {
                         
                     } else {
                         
                     }
                 }];
    
    [uploadTask resume];