[GitHub] [apisix] tzssangglass edited a comment on issue #4614: 请教：是否有方案支持通过判断header是否存在来路由？

[GitBox <gi...@apache.org>]

tzssangglass edited a comment on issue #4614:
URL: https://github.com/apache/apisix/issues/4614#issuecomment-881844980


   I think what you mean is `in` operator, you can also take a look at : https://github.com/api7/lua-resty-expr#operator-list
   
   simple example:
   
   ```
   curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
   {
       "uri": "/hello",
       "vars": [
           ["http_version", "in", ["1.0.0"]]
       ],
       "upstream": {
          "nodes": {
              "127.0.0.1:1980": 1
          },
          "type": "roundrobin"
       }
   }'
   ```
   
   this request will be caught by the route
   
   ```
   curl -H 'version: 1.0.0' 127.0.0.1:9080/hello
   ```
   
   this request will not be caught by the route
   
   ```
   curl -H 'version: 1.0.1' 127.0.0.1:9080/hello
   ```
   


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