Openresty.lua

    local headers = ngx.req.get_headers()
    headers['CF_VISITOR'] = ngx.var.x_scheme_json
    headers['X-Forwarded-Host'] = ngx.var.host
    url = "http://localhost:8888" .. tostring(ngx.var.uri)
    local res = ngx.location.capture('/proxy', {
      ctx = {
        headers = headers
      },
      vars = {
        _url = url
      } 
    })  
    local body = res.body