}

  override fun callEnd(call: Call) {
    logWithTime("callEnd")

    delegate.callEnd(call)
  }

  override fun callFailed(
    call: Call,
    ioe: IOException,
  ) {
    logWithTime("callFailed: $ioe")

    delegate.callFailed(call, ioe)
  }

  override fun canceled(call: Call) {
    logWithTime("canceled")

    delegate.canceled(call)
  }

    // ResponseFailed, ConnectionReleased, CallFailed
    // JDK 8
    // CallStart, ProxySelectStart, ProxySelectEnd, DnsStart, DnsEnd, ConnectStart, SecureConnectStart,
    // ConnectFailed, CallFailed
    // Gradle - JDK 11
    // CallStart, ProxySelectStart, ProxySelectEnd, DnsStart, DnsEnd, ConnectStart, SecureConnectStart,
    // SecureConnectEnd, ConnectFailed, CallFailed
    val recordedEventTypes = listener.recordedEventTypes()

          .build(),
      )
    assertFailsWith<IOException> {
      call.execute()
    }
    listener.removeUpToEvent<DnsStart>()
    val callFailed: CallFailed = listener.removeUpToEvent<CallFailed>()
    assertThat(callFailed.call).isSameAs(call)
    assertThat(callFailed.ioe).isInstanceOf<UnknownHostException>()
  }

  @Test
  fun emptyDnsLookup() {
    val emptyDns = Dns { listOf() }
    client =

    }
  };

  ...
}
```

### Events with Failures

When an operation fails, a failure method is called. This is `connectFailed()` for failures while building a connection to the server, and `callFailed()` when the HTTP call fails permanently. When a failure happens it is possible that a `start` event won’t have a corresponding `end` event.

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

    client.newCall(request).enqueue(callback)
    callback.await(request.url).assertFailure(InterruptedIOException::class.java)
    assertThat(listener.recordedEventTypes())
      .containsExactly("CallStart", "CallFailed")
  }

  @Test
  fun executionRejectedAfterMaxRequestsChange() {
    val request1 = newRequest("http://a/1")
    val request2 = newRequest("http://a/2")
    dispatcher.maxRequests = 1

      printEvent("responseFailed");
    }

    @Override public void callEnd(Call call) {
      printEvent("callEnd");
    }

    @Override public void callFailed(Call call, IOException ioe) {
      printEvent("callFailed");
    }

    @Override public void canceled(Call call) {
      printEvent("canceled");
    }
  }

    ioe: IOException,
  ) = logEvent(ResponseFailed(System.nanoTime(), call, ioe))

  override fun callEnd(call: Call) = logEvent(CallEnd(System.nanoTime(), call))

  override fun callFailed(
    call: Call,
    ioe: IOException,
  ) = logEvent(CallFailed(System.nanoTime(), call, ioe))

  override fun canceled(call: Call) = logEvent(Canceled(System.nanoTime(), call))

  override fun satisfactionFailure(
    call: Call,

 * `dnsStart(call, domainName)` → `dnsEnd(call, domainName, inetAddressList)`.
 *
 * Events are typically nested with this structure:
 *
 *  * call ([callStart], [callEnd], [callFailed])
 *    * proxy selection ([proxySelectStart], [proxySelectEnd])
 *    * dns ([dnsStart], [dnsEnd])
 *    * connect ([connectStart], [connectEnd], [connectFailed])

  ) {
    logWithTime("responseFailed: $ioe")
  }

  override fun callEnd(call: Call) {
    logWithTime("callEnd")
  }

  override fun callFailed(
    call: Call,
    ioe: IOException,
  ) {
    logWithTime("callFailed: $ioe")
  }

  override fun canceled(call: Call) {
    logWithTime("canceled")
  }

  override fun satisfactionFailure(
    call: Call,

      printEvent("responseFailed");
    }

    @Override public void callEnd(Call call) {
      printEvent("callEnd");
    }

    @Override public void callFailed(Call call, IOException ioe) {
      printEvent("callFailed");
    }

    @Override public void canceled(Call call) {
      printEvent("canceled");
    }
  }