_2019-06-26_

**This release upgrades OkHttp to Kotlin.** We tried our best to make fast and safe to upgrade
from OkHttp 3.x. We wrote an [upgrade guide][upgrading_to_okhttp_4] to help with the migration and a
[blog post][okhttp4_blog_post] to explain it.

 *  Fix: Target Java 8 bytecode for Java and Kotlin.


## Version 4.0.0-RC3

_2019-06-24_

    // our connection coalescing requirements are met. See also:
    // https://hpbn.co/optimizing-application-delivery/#eliminate-domain-sharding
    // https://daniel.haxx.se/blog/2016/08/18/http2-connection-coalescing/

    // 1. This connection must be HTTP/2.
    if (http2Connection == null) return false

    // 2. The routes must share an IP address.

          responseCallback.onResponse(this@RealCall, response)
        } catch (e: IOException) {
          if (signalledCallback) {
            // Do not signal the callback twice!
            Platform.get().log("Callback failure for ${toLoggableString()}", Platform.INFO, e)
          } else {
            responseCallback.onFailure(this@RealCall, e)
          }
        } catch (t: Throwable) {
          cancel()

Change Log
==========

## Version 4.x

See [4.x Change log](https://square.github.io/okhttp/changelogs/changelog_4x/) for the stable version changelogs.

## Version 5.0.0-alpha.14

_2024-04-17_

 *  Breaking: Move coroutines extensions to okhttp3.coroutines. Previously this artifact shared the
    `okhttp3` package name with our core module, which is incompatible with the Java Platform Module
    System.

          taskRunner.newQueue().execute("$connectionName[$streamId] onStream") {
            try {
              listener.onStream(newStream)
            } catch (e: IOException) {
              Platform.get().log("Http2Connection.Listener failure for $connectionName", INFO, e)
              ignoreIoExceptions {
                newStream.close(ErrorCode.PROTOCOL_ERROR, e)
              }
            }
          }

        connection.withLock { put(connection) }
      }

      return 0L // run again immediately to create more connections if needed
    } catch (e: IOException) {
      // No need to log, user.connectFailed() will already have been called. Just try again later.
      return state.policy.backoffDelayMillis.jitterBy(state.policy.backoffJitterMillis) * 1_000_000
    }
  }

    redQueue.schedule("task", 100.µs) {
      log += "run@${taskFaker.nanoTime}"
      return@schedule delays.removeAt(0)
    }

    taskFaker.advanceUntil(0.µs)
    assertThat(log).containsExactly()

    taskFaker.advanceUntil(100.µs)
    assertThat(log).containsExactly("run@100000")

    taskFaker.advanceUntil(150.µs)
    assertThat(log).containsExactly("run@100000", "run@150000")