HTTP operations through proxy using 'request' this will read http_proxy varible from the envirement varible (HTTPS_PROXY or HTTP_PROXY) or `proxy` filed in body of a api and use to create proxy agent.
npm install azure-iot-http-base-with-proxy#azure-iot-http-base
Internal library of HTTP-specific components shared between the Azure IoT device and service SDKs.

NOTE: You generally don't want to reference this package directly. The HTTP components you need should be exposed by packages in the device (azure-iot-device-http) or service (azure-iothub) SDKs.