}

  @Test fun peekAfterReadingResponse() {
    val response = newResponse(responseBody("abc"))
    assertThat(response.body.string()).isEqualTo("abc")

    assertFailsWith<IllegalStateException> {
      response.peekBody(3)
    }
  }

  /**
   * Returns a new response body that refuses to be read once it has been closed. This is true of
   * most [BufferedSource] instances, but not of [Buffer].
   */

    return response.body().string();
  }
}
```


Post to a Server
----------------

This program posts data to a service. [Full source][post_example].

```java
public static final MediaType JSON = MediaType.get("application/json");

OkHttpClient client = new OkHttpClient();

String post(String url, String json) throws IOException {
  RequestBody body = RequestBody.create(json, JSON);

    assertThat("hello").isEqualTo("hello")
  }

  @Test
  fun testMockWebServer(server: MockWebServer) {
    server.enqueue(MockResponse(body = "abc"))

    val client = clientRule.newClient()

    client.newCall(Request(url = server.url("/"))).execute().use {
      assertThat(it.body.string()).isEqualTo("abc")
    }
  }

  @Test
  fun testExternalSite() {
    val client = clientRule.newClient()

      }

    val request =
      Request(
        url = "https://api.github.com/markdown/raw".toHttpUrl(),
        body = requestBody,
      )

    client.newCall(request).execute().use { response ->
      if (!response.isSuccessful) throw IOException("Unexpected code $response")

      println(response.body.string())
    }
  }

  companion object {
    val MEDIA_TYPE_MARKDOWN = "text/x-markdown; charset=utf-8".toMediaType()

            println(responseHeaders.name(i) + ": " + responseHeaders.value(i))
          }
          throw IOException("Unexpected code $response")
        }
        println(response.body.string())

        for (peerCertificate in response.handshake?.peerCertificates.orEmpty()) {
          println((peerCertificate as X509Certificate).subjectDN)
        }
      }
  }
}

fun main() {

      val handshake = response.handshake
      println(
        "${handshake!!.tlsVersion} ${handshake.cipherSuite} ${response.protocol} " +
          "${response.code} ${response.body.bytes().size}b",
      )
    }
  } catch (ioe: IOException) {
    println(ioe)
  }
}

fun main(vararg args: String) {
  // System.setProperty("javax.net.debug", "ssl:handshake:verbose");

        .build()

    client.newCall(request).execute().use { response ->
      if (!response.isSuccessful) throw IOException("Unexpected code $response")

      println(response.body.string())
    }
  }
}

object ConsoleCallbackHandler : CallbackHandler {
  override fun handle(callbacks: Array<Callback>) {
    for (callback in callbacks) {
      if (callback is PasswordCallback) {

    this.server = server
  }

  @Test
  fun suspendCall() {
    runTest {
      server.enqueue(MockResponse(body = "abc"))

      val call = client.newCall(request)

      call.executeAsync().use {
        withContext(Dispatchers.IO) {
          assertThat(it.body.string()).isEqualTo("abc")
        }
      }
    }
  }

  @Test
  fun timeoutCall() {
    runTest {
      server.enqueue(

      """.trimMargin(),
    )
  }

  override fun timeout() = Timeout.NONE

  override fun close() {
  }
}

fun Response.stripBody(): Response {
  return newBuilder()
    .body(UnreadableResponseBody(body.contentType(), body.contentLength()))
    .build()
}

val Response.commonIsSuccessful: Boolean
  get() = code in 200..299

fun Response.commonHeaders(name: String): List<String> = headers.values(name)

        .setHeader("content-type", "text/event-stream")
        .body("data: hey\n\n")
        .build(),
    )
    newEventSource()
    listener.assertFailure("timeout")
  }

  @Test
  fun retainsAccept() {
    server.enqueue(
      MockResponse.Builder()
        .body(
          """
          |data: hey
          |
          |
          """.trimMargin(),