触发持久化notifyurl返回code:4，callback failed

Question

pfop请求后返回了persistentId信息，查询的时候：

{"code":4,"desc":"Callback failed","id":"xxxxxxxxxxxxx","inputKey":"audio/content/20141105/1415154031163happy.wav","items":[{"cmd":"avthumb/mp3/ab/32k","code":0,"desc":"The fop was completed successfully","hash":"FjQ8xYRoJIM5mkNibmUEtEMqDC9z","key":"LFpUOnMAb25cP1rrpjvRd-jY3Gc=/Fl7Lh1XeL7-sRyGcmdBKXk05XHeN"}],"pipeline":"1380313453.queue4","reqid":"ffmpeg.LisAAPXixr2bzKUT"}

我post请求pfop的notifyUrl为什么你们会回调失败，但是我用postman访问这个公网地址，加上我查询的数据组成json格式的数据传递过去，成功了。

Answer 1

pfop通知是有重试机制的，有可能你在用persistentId查询的时候回调还没成功，但是后面的重试最后成功了。