### EventListener

Subclass [EventListener](https://square.github.io/okhttp/3.x/okhttp/okhttp3/EventListener.html) and override methods for the events you are interested in. In a successful HTTP call with no redirects or retries the sequence of events is described by this flow.

![Events Diagram](../assets/images/******@****.***)

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```

If transparent compression was used, OkHttp will drop the corresponding response headers `Content-Encoding` and `Content-Length` because they don’t apply to the decompressed response body.

If a conditional GET was successful, responses from the network and cache are merged as directed by the spec.

## Follow-up Requests

      when (testExecutionResult.status!!) {
        TestExecutionResult.Status.ABORTED -> printStatus("-")
        TestExecutionResult.Status.FAILED -> printStatus("F")
        TestExecutionResult.Status.SUCCESSFUL -> printStatus(".")
      }
    }
  }

  override fun testPlanExecutionFinished(testPlan: TestPlan) {
    originalSystemErr?.println()
  }

  fun install() {
    originalSystemOut = System.out

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```

System.out.println(response.handshake().peerPrincipal());
RecordedRequest recordedRequest = server.takeRequest();
System.out.println(recordedRequest.getHandshake().peerPrincipal());
```

This handshake is successful because each party has prearranged to trust the root certificate that
signs the other party's chain.

Well-Known Certificate Authorities
----------------------------------