11.3.4.3. API 게이트웨이가 3scale를 올바르게 호출합니까?

body_filter_by_lua_block{
  if ngx.req.get_headers()["X-3scale-debug"] == ngx.var.provider_key then
    local resp = ""
    ngx.ctx.buffered = (ngx.ctx.buffered or "") .. string.sub(ngx.arg[1], 1, 1000)
    if ngx.arg[2] then
      resp = ngx.ctx.buffered
    end

    ngx.log(0, ngx.req.raw_header())
    ngx.log(0, resp)
  end
}

2016/05/05 14:24:33 [] 7238#0: *57 [lua] body_filter_by_lua:7: GET /api/contacts.json?access_token=7c6f24f5 HTTP/1.1
Host: 726e3b99.ngrok.io
User-Agent: curl/7.43.0
Accept: */*
X-Forwarded-Proto: https
X-Forwarded-For: 2.139.235.79

 while sending to client, client: 127.0.0.1, server: pili-virtualbox, request: "GET /api/contacts.json?access_token=7c6f24f5 HTTP/1.1", subrequest: "/threescale_authrep", upstream: "https://54.83.62.94:443/transactions/oauth_authrep.xml?provider_key=REDACTED&service_id=REDACTED&usage[hits]=1&access_token=7c6f24f5", host: "726e3b99.ngrok.io"
2016/05/05 14:24:33 [] 7238#0: *57 [lua] body_filter_by_lua:8: <?xml version="1.0" encoding="UTF-8"?><error code="access_token_invalid">access_token "7c6f24f5" is invalid: expired or never defined</error> while sending to client, client: 127.0.0.1, server: pili-virtualbox, request: "GET /api/contacts.json?access_token=7c6f24f5 HTTP/1.1", subrequest: "/threescale_authrep", upstream: "https://54.83.62.94:443/transactions/oauth_authrep.xml?provider_key=REDACTED&service_id=REDACTED&usage[hits]=1&access_token=7c6f24f5", host: "726e3b99.ngrok.io"