val protocols: List<Protocol> = address.protocols()
    val connectionSpecs: List<ConnectionSpec> = address.connectionSpecs()
    val proxySelector: ProxySelector = address.proxySelector()
    val proxy: Proxy? = address.proxy()
    val sslSocketFactory: SSLSocketFactory? = address.sslSocketFactory()
    val hostnameVerifier: HostnameVerifier? = address.hostnameVerifier()

In limited situations OkHttp will retry a route if connecting fails:

 * When making an HTTPS connection through an HTTP proxy, the proxy may issue an authentication challenge. OkHttp will call the proxy [authenticator](https://square.github.io/okhttp/4.x/okhttp/okhttp3/-authenticator/) and try again.

   * can't coalesce connections that use a proxy, since proxies don't tell us the origin server's IP
   * address.
   */
  private fun routeMatchesAny(candidates: List<Route>): Boolean =
    candidates.any {
      it.proxy.type() == Proxy.Type.DIRECT &&
        route.proxy.type() == Proxy.Type.DIRECT &&
        route.socketAddress == it.socketAddress
    }

  override fun connectStart(route: Route) {
    eventListener.connectStart(call, route.socketAddress, route.proxy)
    poolConnectionListener.connectStart(route, call)
  }

  override fun connectFailed(
    route: Route,
    protocol: Protocol?,
    e: IOException,
  ) {
    eventListener.connectFailed(call, route.socketAddress, route.proxy, null, e)
    poolConnectionListener.connectFailed(route, call, e)
  }

  private static <T> void testToString(
      Class<T> interfaceType, Function<? super T, ? extends T> wrapperFunction) {
    T proxy = new FreshValueGenerator().newFreshProxy(interfaceType);
    assertEquals(
        "toString() isn't properly forwarded",
        proxy.toString(),
        wrapperFunction.apply(proxy).toString());
  }

  private static @Nullable Object[] getParameterValues(Method method) {

   * header to create the request URL.
   *
   * For HTTP proxy requests this will be either an absolute-form string like
   * `http://example.com/index.html` (HTTP proxy) or an authority-form string like
   * `example.com:443` (HTTPS proxy).
   *
   * For OPTIONS requests, this may be an asterisk, `*`.
   */
  public val target: String,

package okhttp3.internal.http

import java.net.Proxy
import okhttp3.HttpUrl
import okhttp3.Request

object RequestLine {
  /**
   * Returns the request status line, like "GET / HTTP/1.1". This is exposed to the application by
   * [HttpURLConnection.getHeaderFields], so it needs to be set even if the transport is
   * HTTP/2.
   */
  fun get(
    request: Request,
    proxyType: Proxy.Type,
  ): String =
    buildString {

    * これは、同じTLS Termination Proxyが証明書の更新処理も行う場合に非常に便利な理由の1つです。
    * そうでなければ、TLS Termination Proxyを一時的に停止し、証明書を取得するために更新プログラムを起動し、TLS Termination Proxyで証明書を設定し、TLS Termination Proxyを再起動しなければならないかもしれません。TLS Termination Proxyが停止している間はアプリが利用できなくなるため、これは理想的ではありません。


アプリを提供しながらこのような更新処理を行うことは、アプリケーション・サーバー（Uvicornなど）でTLS証明書を直接使用するのではなく、TLS Termination Proxyを使用して**HTTPSを処理する別のシステム**を用意したくなる主な理由の1つです。

## まとめ

  private static <T> void testToString(
      Class<T> interfaceType, Function<? super T, ? extends T> wrapperFunction) {
    T proxy = new FreshValueGenerator().newFreshProxy(interfaceType);
    assertEquals(
        "toString() isn't properly forwarded",
        proxy.toString(),
        wrapperFunction.apply(proxy).toString());
  }

  private static @Nullable Object[] getParameterValues(Method method) {

// setLoggerWebhookSubnetProxy - Sets the logger webhook's subnet proxy value to
// one being set for subnet proxy
func setLoggerWebhookSubnetProxy(subSys string, cfg config.Config) bool {
	if subSys == config.SubnetSubSys || subSys == config.LoggerWebhookSubSys {
		subnetWebhookCfg := cfg[config.LoggerWebhookSubSys][subnet.LoggerWebhookName]
		loggerWebhookSubnetProxy := subnetWebhookCfg.Get(logger.Proxy)