Merge pull request #1 from vitalybaev/fix-volume-port-for-uploading

Use volume port instead volume public port when upload

src/SeaweedFS.php

@@ -131,7 +131,7 @@ public function upload($data, $filename = 'file.txt', $file = null) {
             throw new SeaweedFSException('File must contain a url and fid');
         }
 
-        $res = $this->client->post($this->buildVolumeUrl($file->publicUrl, $file->fid), [
+        $res = $this->client->post($this->buildVolumeUrl($file->url, $file->fid), [
             'multipart' => [
                 [
                     'name'     => 'file',