1 ngx.say("hello,lua1")

  2 

  3 local redis = require "resty.redis"

  4 local cache = redis:new()

  5 

  6 cache:set_timeout(600)

  7 

  8 local ok, err = cache:connect('127.0.0.1', 6379)

  9 ngx.say("jieguo:", ok)

 10 if not ok then

 11     ngx.say("failed to connect:", err)

 12     return

 13 end

 14 --[[

 15 local red, err = cache:auth("foobared")

 16 if not red then

 17     ngx.say("failed to authenticate: ", err)

 18     return

 19 end

 20 ]]--

 21 local local_ip = ngx.req.get_headers()["X-Real-IP"]

 22 if local_ip == nil then

 23     local_ip = ngx.req.get_headers()["x_forwarded_for"]

 24 end

 25 

 26 if local_ip == nil then

 27     local_ip = ngx.var.remote_addr

 28 end

 29 ngx.say("local_ip is : ", local_ip)

 30 local intercept = cache:get(local_ip)

 31 

 32 

 33 if intercept == local_ip then

 34     ngx.exec("@client2")

 35     return

 36 end

 37 

 38 ngx.exec("@client1")

 39 local ok, err = cache:close()

 40 

 41 if not ok then

 42     ngx.say("failed to close:", err)

 43     return

 44 end

这是我的lua脚本  出现了ngx.exec报错：

2018/06/29 17:27:26 [error] 15721#15721: *334 lua entry thread aborted: runtime error: /usr/local/nginx/huidu.lua:38: attempt to call ngx.exec after sending out response headers

stack traceback:

coroutine 0:

[C]: in function 'exec'

/usr/local/nginx/huidu.lua:38: in function </usr/local/nginx/huidu.lua:1>, client: 101.204.216.56, server: localhost, request: "GET /test/1.txt HTTP/1.1", host: "39.108.78.127:8080"