///

## OpenID Connect { #openid-connect }

OpenID Connect는 **OAuth2**를 기반으로 한 또 다른 명세입니다.

OAuth2에서 비교적 모호한 부분을 일부 구체화하여 상호 운용성을 높이려는 확장입니다.

예를 들어, Google 로그인은 OpenID Connect를 사용합니다(내부적으로는 OAuth2를 사용).

하지만 Facebook 로그인은 OpenID Connect를 지원하지 않습니다. 자체적인 변형의 OAuth2를 사용합니다.

### OpenID("OpenID Connect"가 아님) { #openid-not-openid-connect }

import okhttp3.internal.connection.RoutePlanner.Plan
import okhttp3.internal.okHttpName

/**
 * Speculatively connects to each IP address of a target address, returning as soon as one of them
 * connects successfully. This kicks off new attempts every 250 ms until a connect succeeds.
 */
internal class FastFallbackExchangeFinder(
  override val routePlanner: RoutePlanner,
  private val taskRunner: TaskRunner,

import okhttp3.internal.tls.OkHostnameVerifier
import okhttp3.internal.toHostHeader

/**
 * A single attempt to connect to a remote server, including these steps:
 *
 *  * [TCP handshake][connectSocket]
 *  * Optional [CONNECT tunnels][connectTunnel]. When using an HTTP proxy to reach an HTTPS server
 *    we must send a `CONNECT` request, and handle authorization challenges from the proxy.
 *  * Optional [TLS handshake][connectTls].
 *

    val connect1 = server.takeRequest()
    assertThat(connect1.requestLine).isEqualTo("CONNECT android.com:443 HTTP/1.1")
    assertThat(connect1.headers["Proxy-Authorization"]).isNull()
    val connect2 = server.takeRequest()
    assertThat(connect2.requestLine).isEqualTo("CONNECT android.com:443 HTTP/1.1")
    assertThat(connect2.headers["Proxy-Authorization"]).isEqualTo("password")

  /**
   * Returns true if the edges in this graph are directed. Directed edges connect a {@link
   * EndpointPair#source() source node} to a {@link EndpointPair#target() target node}, while
   * undirected edges connect a pair of nodes to each other.
   */
  boolean isDirected();

  /**
   * Returns true if this graph allows self-loops (edges that connect a node to itself). Attempting

      }

      return when {
        tcpConnectThrowable != null -> {
          events += "plan $id TCP connect failed"
          ConnectResult(this, nextPlan = connectTcpNextPlan, throwable = tcpConnectThrowable)
        }

        canceled -> {
          events += "plan $id TCP connect canceled"
          ConnectResult(this, nextPlan = connectTcpNextPlan, throwable = IOException("canceled"))
        }

///

## OpenID Connect { #openid-connect }

OpenID Connect, **OAuth2** tabanlı başka bir spesifikasyondur.

OAuth2’de nispeten belirsiz kalan bazı noktaları tanımlayarak onu daha birlikte çalışabilir (interoperable) hâle getirmeye çalışır.

Örneğin, Google ile giriş OpenID Connect kullanır (arka planda OAuth2 kullanır).

Ancak Facebook ile giriş OpenID Connect’i desteklemez. Kendine özgü bir OAuth2 çeşidi vardır.

   *
   * <p>If {@code edge} already connects an endpoint pair equal to {@code endpoints}, then this
   * method will have no effect.
   *
   * @return {@code true} if the network was modified as a result of this call
   * @throws IllegalArgumentException if {@code edge} already exists in the graph and connects some
   *     other endpoint pair that is not equal to {@code endpoints}

 2. It attempts to retrieve a connection with that address from the **connection pool**.
 3. If it doesn't find a connection in the pool, it selects a **route** to attempt. This usually means making a DNS request to get the server's IP addresses. It then selects a TLS version and proxy server if necessary.

    val connect1 = server.takeRequest()
    assertThat(connect1.requestLine).isEqualTo("CONNECT android.com:$port HTTP/1.1")
    assertThat(connect1.headers["Proxy-Authorization"]).isNull()

    val connect2 = server.takeRequest()
    assertThat(connect2.requestLine).isEqualTo("CONNECT android.com:$port HTTP/1.1")
    assertThat(connect2.headers["Proxy-Authorization"]).isEqualTo("password")