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cors.md

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Summary

Description

cors plugin can help you enable CORS easily.

Attributes

  • allow_origins: optional, Which Origins is allowed to enable CORS, format as：scheme://host:port, for example: https://somehost.com:8081. Multiple origin use , to split. When allow_credential is false, you can use * to indicate allow all any origin. you alse can allow all any origins forcefully using ** even already enable allow_credential, but it will bring some securiy risks. Default value: *.
  • allow_methods: optional, Which Method is allowed to enable CORS, such as: GET, POST etc. Multiple method use , to split. When allow_credential is false, you can use * to indicate allow all any method. You alse can allow all any method forcefully using ** even already enable allow_credential, but it will bring some securiy risks. Default value: *.
  • allow_headers: optional, Which headers are allowed to set in requst when access cross-origin resource. Multiple value use , to split. Default value: *.
  • expose_headers: optional, Which headers are allowed to set in response when access cross-origin resource. Multiple value use , to split. Default value: *.
  • max_age: optional, Maximum number of seconds the results can be cached.. Within this time range, the browser will reuse the last check result. -1 means no cache. Please note that the maximum value is depended on browser, please refer to MDN for details.Default value: 5.
  • allow_credential: Enable request include credentia (such as Cookie etc.), Default avlue: false.

How To Enable

Create a Route or Service object and configure cors plugin.

curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
{
    "uri": "/hello",
    "plugins": {
        "cors": {}
    },
    "upstream": {
        "type": "roundrobin",
        "nodes": {
            "127.0.0.1:8080": 1
        }
    }
}'

Test Plugin

curl to server, you will find the headers about CORS is be returned, it means plugin is working fine.

curl http://127.0.0.1:9080/hello -v
...
< Server: APISIX web server
< Access-Control-Allow-Origin: *
< Access-Control-Allow-Methods: *
< Access-Control-Allow-Headers: *
< Access-Control-Expose-Headers: *
< Access-Control-Max-Age: 5
...

Disable Plugin

Remove plugin from configuraion.

$ curl http://127.0.0.1:9080/apisix/admin/routes/1 -H 'X-API-KEY: edd1c9f034335f136f87ad84b625c8f1' -X PUT -d '
{
    "uri": "/hello",
    "plugins": {},
    "upstream": {
        "type": "roundrobin",
        "nodes": {
            "127.0.0.1:8080": 1
        }
    }
}'