throw RuntimeException(failure)
    }

    return countRef.get()
  }

  private fun updateReports() {
    val latch = CountDownLatch(1)
    newWebSocket(
      "/updateReports?agent=$USER_AGENT",
      object : WebSocketListener() {
        override fun onClosing(
          webSocket: WebSocket,
          code: Int,
          reason: String,
        ) {
          webSocket.close(1000, null)

## 自动转换

`Header` 比 `Path`、`Query` 和 `Cookie` 提供了更多功能。

大部分标准请求头用**连字符**分隔，即**减号**（`-`）。

但是 `user-agent` 这样的变量在 Python 中是无效的。

因此，默认情况下，`Header` 把参数名中的字符由下划线（`_`）改为连字符（`-`）来提取并存档请求头 。

同时，HTTP 的请求头不区分大小写，可以使用 Python 标准样式（即 **snake_case**）进行声明。

因此，可以像在 Python 代码中一样使用 `user_agent` ，无需把首字母大写为 `User_Agent` 等形式。

如需禁用下划线自动转换为连字符，可以把 `Header` 的 `convert_underscores` 参数设置为 `False`：

=== "Python 3.10+"

    name = "GitHub Merge Queue Check Pass"
    type = Type.COMPOSITE

    vcs {
        root(AbsoluteId(VersionedSettingsBranch.fromDslContext().vcsRootId()))
        checkoutMode = CheckoutMode.ON_AGENT
    }

    features {
        enablePullRequestFeature()
        publishBuildStatusToGithub(model)
    }

    triggers.vcs {
        quietPeriodMode = VcsTrigger.QuietPeriodMode.DO_NOT_USE

    assertThat(recorded.headers["Accept-Encoding"]).isEqualTo("gzip")
    assertThat(recorded.headers["Connection"]).isEqualTo("Keep-Alive")
    assertThat(recorded.headers["User-Agent"]!!).matches(Regex("okhttp/.*"))
  }

abstract class BasePromotionBuildType(vcsRootId: String, cleanCheckout: Boolean = true) : BuildType() {
    init {
        vcs {
            root(AbsoluteId(vcsRootId))

            checkoutMode = CheckoutMode.ON_AGENT
            this.cleanCheckout = cleanCheckout
            showDependenciesChanges = true
        }

        requirements {
            requiresOs(Os.LINUX)
            requiresNotEc2Agent()
        }

/pkg/dns/                                                        @istio/wg-networking-maintainers
/pkg/envoy/                                                      @istio/wg-networking-maintainers
/pkg/istio-agent/                                                @istio/wg-networking-maintainers @istio/wg-security-maintainers
/pkg/keepalive/                                                  @istio/wg-networking-maintainers

    - [security](security/). This directory contains [security](https://istio.io/latest/docs/concepts/security/) related code,
including Citadel (acting as Certificate Authority), citadel agent, etc.

- [istio/proxy](https://github.com/istio/proxy). The Istio proxy contains
extensions to the [Envoy proxy](https://github.com/envoyproxy/envoy) (in the form of

            // Add the agent JAR to the test runtime classpath so the InProcessGradleExecuter can find the module and spawn daemons.
            // This doesn't apply the agent to the test process.
            "${prefix}TestRuntimeOnly"(project(":instrumentation-agent"))
            "${prefix}TestAgentsClasspath"(project(":instrumentation-agent"))
        }
    }
}


internal

  val headers: List<String>? by option("-H", "--header", help = "Custom header to pass to server").multiple()

  val userAgent: String by option("-A", "--user-agent", help = "User-Agent to send to server").default(NAME + "/" + versionString())

  val connectTimeout: Int by option(
    "--connect-timeout",
    help = "Maximum time allowed for connection (seconds)",
  ).int().default(DEFAULT_TIMEOUT)

object OkHttp {
  /**
   * This is a string like "4.5.0-RC1", "4.5.0", or "4.6.0-SNAPSHOT" indicating the version of
   * OkHttp in the current runtime. Use this to include the OkHttp version in custom `User-Agent`
   * headers.
   *
   * Official OkHttp releases follow [semantic versioning][semver]. Versions with the `-SNAPSHOT`
   * qualifier are not unique and should only be used in development environments. If you create