call.

    Create duplex calls by overriding the new `RequestBody.isDuplex()` method to return true.
    This simple option dramatically changes the behavior of the request body and of the entire
    call.

    The `RequestBody.writeTo()` method may now retain a reference to the provided sink and
    hand it off to another thread to write to it after `writeTo` returns.

    assertThat(call1Connect.method).isEqualTo("CONNECT")
    assertThat(call1Connect.sequenceNumber).isEqualTo(0)
    val call2Connect = server.takeRequest()
    assertThat(call2Connect.method).isEqualTo("CONNECT")
    assertThat(call2Connect.sequenceNumber).isEqualTo(0)
    val call2Get = server.takeRequest()
    assertThat(call2Get.method).isEqualTo("GET")
    assertThat(call2Get.path).isEqualTo("/call2")

 *
 * ### Different URLs should be different
 *
 * Although they have different content, `java.net.URL` considers the following two URLs
 * equal, and the [equals()][Object.equals] method between them returns true:
 *
 *  * https://example.net/
 *
 *  * https://example.com/
 *
 * This is because those two hosts share the same IP address. This is an old, bad design decision

      }

    /**
     * Sets the socket factory used to create connections. OkHttp only uses the parameterless
     * [SocketFactory.createSocket] method to create unconnected sockets. Overriding this method,
     * e. g., allows the socket to be bound to a specific local address.
     *
     * If unset, the [system-wide default][SocketFactory.getDefault] socket factory will be used.
     */

	public final fun -deprecated_body ()Lokhttp3/RequestBody;
	public final fun -deprecated_cacheControl ()Lokhttp3/CacheControl;
	public final fun -deprecated_headers ()Lokhttp3/Headers;
	public final fun -deprecated_method ()Ljava/lang/String;
	public final fun -deprecated_url ()Lokhttp3/HttpUrl;
	public fun <init> (Lokhttp3/HttpUrl;Lokhttp3/Headers;Ljava/lang/String;Lokhttp3/RequestBody;)V

    peer.acceptFrame() // ACK
    peer.acceptFrame() // SYN_STREAM
    peer.sendFrame().headers(false, 3, headerEntries("a", "android"))
    val expectedRequestHeaders =
      listOf(
        Header(Header.TARGET_METHOD, "GET"),
        Header(Header.TARGET_SCHEME, "https"),
        Header(Header.TARGET_AUTHORITY, "squareup.com"),
        Header(Header.TARGET_PATH, "/cached"),
      )