[GitHub] [trafficserver] c-taylor opened a new issue #7372: Crash using lua sleep examples

[GitBox]

c-taylor opened a new issue #7372:
URL: https://github.com/apache/trafficserver/issues/7372


   ATS version 8.1.x
   
   I was able to consistently cause server restarts when using the ts.sleep 
function as per examples in the admin guide.
   
   ### Configuration
   ```
   map http://property1.mycdn.com/    http://origin1.mycdn.com:8080/  
@plugin=tslua.so @pparam=sleep-request.lua
   remap.config:map https://property1.mycdn.com/    
http://origin1.mycdn.com:8080/  @plugin=tslua.so @pparam=sleep-request.lua
   ```
   
   sleep-request.lua:
   ```
       function send_response()
           ts.sleep(3)
       end
       function read_response()
           ts.sleep(3)
       end
       function do_remap()
           ts.hook(TS_LUA_HOOK_READ_RESPONSE_HDR, read_response)
           ts.hook(TS_LUA_HOOK_SEND_RESPONSE_HDR, send_response)
       end
   ```
   
   Hooks that crash:
   “TS_LUA_HOOK_(SEND|READ)_RESPONSE_HDR”
   “TS_LUA_HOOK _CACHE_LOOKUP_COMPLETE”
   “TS_LUA_HOOK_SEND_REQUEST_HDR”
   
   Hooks that don't crash:
   “TS_LUA_RESPONSE_TRANSFORM”
   “TS_LUA_HOOK_TXN_CLOSE”
   “TS_LUA_HOOK _OS_DNS”
   
   Sleep only really performed as expected for "TS_LUA_HOOK _OS_DNS” in my case.
   There is also an. example in 'plugins/lua/example/test_sleep.lua', 
derivations of which have the same results.


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