Configure forward proxying for API proxies

Forward proxies provide a single point through which multiple machines send requests to an external server. They can enforce security policies, log and analyze requests, and perform other actions so that requests adhere to your business rules. With Apigee hybrid, you can configure a forward proxy that intermediates your API proxies and an external TargetEndpoint (a backend target server).

To use an HTTP forward proxy between hybrid and the TargetEndpoint, you must configure the outbound proxy settings in your overrides file. These environment-scoped properties route target requests from hybrid to the HTTP forward proxy.

To configure a hybrid environment for forwarding proxying, add the envs.httpProxy property to your overrides file and apply it to the cluster. For example:

envs:
  - name: test
    httpProxy:
      scheme: http
      host: 10.12.0.47
      port: 3128
      ...

For details on each of the envs.httpProxy configuration properties refer to the Configuration property reference.

Forward proxying is configured for an environment; all traffic going from API proxies in that environment to backend targets goes through the specified HTTP forward proxy. If the traffic for a specific target of an API proxy should go directly to the backend target, bypassing the forward proxy, then set the following property in the TargetEndpoint to override the HTTP forward proxy:

<Property name="use.proxy">false</Property>

For more information on setting the TargetEndpoint properties, including how to configure the connection to the target endpoint, see Endpoint properties reference.

Set use.proxy to "true" for any TargetEndpoint that you want to go through an HTTP forward proxy:

<Property name="use.proxy">true</Property>