content_by_lua_block { ngx.req.read_body() -- explicitly read the req body local data = ngx.req.get_body_data() if data then ngx.say("body data:") ngx.print(data) return end
-- body may get buffered in a temp file: local file = ngx.req.get_body_file()  if file then ngx.say("body is in file ", file) else ngx.say("no body found") end }