* [okhttp-digest](https://github.com/rburgst/okhttp-digest): A digest authenticator for OkHttp.
 * [OkHttp Idling Resource](https://github.com/JakeWharton/okhttp-idling-resource): An Espresso IdlingResource for OkHttp.
 * [okhttp-client-mock](https://github.com/gmazzo/okhttp-client-mock): A simple OKHttp client mock, using a programmable request interceptor.

[2020-01-01 00:00:00] Q10003 scheduled after   0 µs: OkHttp squareup.com onSettings
[2020-01-01 00:00:00] Q10003 starting              : OkHttp squareup.com onSettings
[2020-01-01 00:00:00] Q10001 finished run in   3 ms: OkHttp squareup.com applyAndAckSettings
[2020-01-01 00:00:00] Q10003 finished run in 528 µs: OkHttp squareup.com onSettings
[2020-01-01 00:00:00] Q10000 scheduled after   0 µs: OkHttp ConnectionPool

}

include(":okcurl")
include(":okhttp")
include(":okhttp-bom")
include(":okhttp-brotli")
include(":okhttp-coroutines")
include(":okhttp-dnsoverhttps")
include(":okhttp-hpacktests")
include(":okhttp-idna-mapping-table")
include(":okhttp-java-net-cookiejar")
include(":okhttp-logging-interceptor")
include(":okhttp-sse")
include(":okhttp-testing-support")
include(":okhttp-tls")
include(":okhttp-urlconnection")

With a few small exceptions (below), OkHttp 4.x is both binary- and Java source-compatible with
OkHttp 3.x. You can use an OkHttp 4.x .jar file with applications or libraries built for OkHttp 3.x.

OkHttp is **not** source-compatible for Kotlin callers, but upgrading should be automatic thanks to
Kotlin’s powerful deprecation features. Most developers should be able to use IntelliJ’s _Code
Cleanup_ for a safe and fast upgrade.

01-01 12:53:32.816 10999 11090 D OkHttp  : [54 ms] responseHeadersStart
01-01 12:53:32.816 10999 11090 D OkHttp  : [54 ms] responseHeadersEnd: Response{protocol=h2, code=200, message=, url=https://1.1.1.1/dns-query?dns=AAABAAABAAAAAAAAA3d3dwhmYWNlYm9vawNjb20AAAEAAQ}
01-01 12:53:32.817 10999 11090 D OkHttp  : [55 ms] responseBodyStart
01-01 12:53:32.818 10999 11090 D OkHttp  : [56 ms] responseBodyEnd: byteCount=128

[OkHttp30]: https://square.github.io/okhttp/changelog_3x/#version-300
[OkHttp310]: https://square.github.io/okhttp/changelog_3x/#version-310
[OkHttp311]: https://square.github.io/okhttp/changelog_3x/#version-320

class HeadersTest {
  @Test fun ofTrims() {
    val headers = headersOf("\t User-Agent \n", " \r OkHttp ")
    assertThat(headers.name(0)).isEqualTo("User-Agent")
    assertThat(headers.value(0)).isEqualTo("OkHttp")
  }

  @Test fun ofThrowsOddNumberOfHeaders() {
    assertFailsWith<IllegalArgumentException> {
      headersOf("User-Agent", "OkHttp", "Content-Length")
    }
  }

  @Test fun ofThrowsOnEmptyName() {

01-01 12:53:32.816 10999 11090 D OkHttp  : [54 ms] responseHeadersStart
01-01 12:53:32.816 10999 11090 D OkHttp  : [54 ms] responseHeadersEnd: Response{protocol=h2, code=200, message=, url=https://1.1.1.1/dns-query?dns=AAABAAABAAAAAAAAA3d3dwhmYWNlYm9vawNjb20AAAEAAQ}
01-01 12:53:32.817 10999 11090 D OkHttp  : [55 ms] responseBodyStart
01-01 12:53:32.818 10999 11090 D OkHttp  : [56 ms] responseBodyEnd: byteCount=128

## [Requests](https://square.github.io/okhttp/4.x/okhttp/okhttp3/-request/)

Each HTTP request contains a URL, a method (like `GET` or `POST`), and a list of headers. Requests may also contain a body: a data stream of a specific content type.

## [Responses](https://square.github.io/okhttp/4.x/okhttp/okhttp3/-response/)

    methods track the system's local time when network calls are made. These
    replace the `OkHttp-Sent-Millis` and `OkHttp-Received-Millis` headers that were
    present in earlier versions of OkHttp.
 *  New: Accept user-provided trust managers in `OkHttpClient.Builder`. This
    allows OkHttp to satisfy its TLS requirements directly. Otherwise OkHttp
    will use reflection to extract the `TrustManager` from the
    `SSLSocketFactory`.