public function send_file($file) {
        // First we create the 'resumable upload request'.
        $this->googleoauth->setHeader("Content-Length: 0");
        $this->googleoauth->setHeader("X-Upload-Content-Length: ". $file->get_filesize());
        $this->googleoauth->setHeader("X-Upload-Content-Type: ". $file->get_mimetype());
        $this->googleoauth->setHeader("Slug: ". $file->get_filename());
        $this->googleoauth->post(self::UPLOAD_URL);

        if ($this->googleoauth->info['http_code'] !== 200) {
            throw new moodle_exception('Cantpostupload');
        }

        // Now we http PUT the file in the location returned.
        $location = $this->googleoauth->response['Location'];
        if (empty($location)) {
            throw new moodle_exception('Nouploadlocation');
        }

        // Reset the curl object for actually sending the file.
        $this->reset_curl_state();
        $this->googleoauth->setHeader("Content-Length: ". $file->get_filesize());
        $this->googleoauth->setHeader("Content-Type: ". $file->get_mimetype());

        // We can't get a filepointer, so have to copy the file..
        $tmproot = make_temp_directory('googledocsuploads');
        $tmpfilepath = $tmproot.'/'.$file->get_contenthash();
        $file->copy_content_to($tmpfilepath);

        // HTTP PUT the file.
        $this->googleoauth->put($location, array('file'=>$tmpfilepath));

        // Remove the temporary file we created..
        unlink($tmpfilepath);

        if ($this->googleoauth->info['http_code'] === 201) {
            // Clear headers for further requests.
            $this->reset_curl_state();
            return true;
        } else {
            return false;
        }
    }