Being able to specify a specific host for Signing the request #64
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When ElasticSearch is below a VPC, there is a way to access it externally using an Nginx proxy as per AWS Documentation (https://docs.amazonaws.cn/en_us/elasticsearch-service/latest/developerguide/es-kibana.html).
If you try to sign the request using the Proxy host, it will fail as it's expecting the original ES Endpoint, I have managed to add a parameter to the ES client in order to specify the host it should be used for the signature.
You can pass an extra parameter to the ES Client: