Embedding NSInputStream into NSURLRequest

NSURLRequestDemo.m

- (NSURLSessionUploadTask *)uploadData:(NSData *)data toURL:(NSURL *)URL {
    NSMutableHTTPRequest *request = [[NSMutableHTTPRequest alloc] initWithURL:URL];
    request.HTTPMethod = @"PUT";
    request.HTTPBodyStream = [NSInputStream inputStreamWithData:data];
    NSURLSession *session = [NSURLSession sharedSession];
    NSURLSessionUploadTask *task = [session uploadTaskWithStreamedRequest:request]
    return task;
}