.url(server.url("/"))
    .build());
Response response = call.execute();
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.

    response.body.close()
    val recordedRequest1 = server.takeRequest()
    assertThat(recordedRequest1.method).isEqualTo("POST")
    assertThat(recordedRequest1.body?.utf8()).isEqualTo(body)
    assertThat(recordedRequest1.headers["Authorization"]).isNull()
    val recordedRequest2 = server.takeRequest()
    assertThat(recordedRequest2.method).isEqualTo("POST")
    assertThat(recordedRequest2.body?.utf8()).isEqualTo(body)

import javax.net.ssl.TrustManagerFactory;
import okhttp3.mockwebserver.Dispatcher;
import okhttp3.mockwebserver.MockResponse;
import okhttp3.mockwebserver.MockWebServer;
import okhttp3.mockwebserver.RecordedRequest;
import okio.Buffer;
import okio.Okio;

public class SampleServer extends Dispatcher {
  private final SSLContext sslContext;
  private final String root;
  private final int port;

    val response1 = client.newCall(request1).execute()
    assertThat(response1.body.string()).isEqualTo("ABC")
    val recordedRequest1 = server.takeRequest()
    assertThat(recordedRequest1.requestLine).isEqualTo("GET /foo HTTP/1.1")
    assertThat(recordedRequest1.connectionIndex).isEqualTo(0)
    assertThat(recordedRequest1.exchangeIndex).isEqualTo(0)
    val request2 = Request.Builder().url(server.url("/bar")).build()