Cannot proxy pass POST request with form-data body.

[wechasing]

hi, when i'm using the reqargs to get post request data from form-data body, i cann't proxy pass the requests to the upstream, the nginx will return 504, my code is like this:

`
local get, post, _ = require "resty.reqargs"()

-- do some return

do return end
`

any advise? thanks