1、OkHttpCilent中的各个参数：

 @get:JvmName("dispatcher") val dispatcher: Dispatcher = builder.dispatcher
//线程调度器，内部提供了一个默认的线程池的构造

  @get:JvmName("connectionPool") val connectionPool: ConnectionPool = builder.connectionPool
//连接池，OkHttp可能会有多个连接同时工作，所以建立连接池以复用资源，可以配置连接池，通过重用和自动回收，来追求性能和资源的动态平衡

  @get:JvmName("interceptors") val interceptors: List<Interceptor> =builder.interceptors.toImmutableList()
// 

  @get:JvmName("networkInterceptors") val networkInterceptors: List<Interceptor> =builder.networkInterceptors.toImmutableList()
//

  @get:JvmName("eventListenerFactory") val eventListenerFactory: EventListener.Factory =builder.eventListenerFactory
//事件监听器，如连接建立吖，请求发起等

  @get:JvmName("retryOnConnectionFailure") val retryOnConnectionFailure: Boolean =builder.retryOnConnectionFailure
//在连接失败时，是否重试（默认true）

  @get:JvmName("authenticator") val authenticator: Authenticator =builder.authenticator
//认证修正，如Token过期，重新申请 

  @get:JvmName("followRedirects") val followRedirects: Boolean =builder.followRedirects
//跟随重定向

  @get:JvmName("followSslRedirects") val followSslRedirects: Boolean = =builder.followSslRedirects
//跟随SSL的重定向，意思是切换协议，如http://切换至https://

  @get:JvmName("cookieJar") val cookieJar: CookieJar = builder.cookieJar
//cookie罐子，缓存cookie的方法，但是为实现，有需求需要自己实现该方法

  @get:JvmName("cache") val cache: Cache? = builder.cache
//本地缓存

  @get:JvmName("dns") val dns: Dns = builder.dns
//域名解析用

  @get:JvmName("proxy") val proxy: Proxy? = builder.proxy
//代理设置

  @get:JvmName("proxySelector") val proxySelector: ProxySelector =
      when {
        // Defer calls to ProxySelector.getDefault() because it can throw a SecurityException.
        builder.proxy != null -> NullProxySelector
        else -> builder.proxySelector ?: ProxySelector.getDefault() ?: NullProxySelector
      }

  @get:JvmName("proxyAuthenticator") val proxyAuthenticator: Authenticator =
      builder.proxyAuthenticator
//代理认证修正

  @get:JvmName("socketFactory") val socketFactory: SocketFactory = builder.socketFactory
//Socket工厂，Http连接的具体实现是Socket

  private val sslSocketFactoryOrNull: SSLSocketFactory?
// SSLSocket工厂，TSL连接用

  @get:JvmName("sslSocketFactory") val sslSocketFactory: SSLSocketFactory
    get() = sslSocketFactoryOrNull ?: throw IllegalStateException("CLEARTEXT-only client")

  @get:JvmName("x509TrustManager") val x509TrustManager: X509TrustManager?
//证书管理器，负责证书认证之类的

  @get:JvmName("connectionSpecs") val connectionSpecs: List<ConnectionSpec> =builder.connectionSpecs
//TLS版本和加密套件设置

  @get:JvmName("protocols") val protocols: List<Protocol> = builder.protocols
//Http协议版本

  @get:JvmName("hostnameVerifier") val hostnameVerifier: HostnameVerifier = builder.hostnameVerifier

  @get:JvmName("certificatePinner") val certificatePinner: CertificatePinner

  @get:JvmName("certificateChainCleaner") val certificateChainCleaner: CertificateChainCleaner?
//上三都与证书验证相关

  @get:JvmName("callTimeoutMillis") val callTimeoutMillis: Int = builder.callTimeout

  /** Default connect timeout (in milliseconds). The default is 10 seconds. */
  @get:JvmName("connectTimeoutMillis") val connectTimeoutMillis: Int = builder.connectTimeout

  /** Default read timeout (in milliseconds). The default is 10 seconds. */
  @get:JvmName("readTimeoutMillis") val readTimeoutMillis: Int = builder.readTimeout

  /** Default write timeout (in milliseconds). The default is 10 seconds. */
  @get:JvmName("writeTimeoutMillis") val writeTimeoutMillis: Int = builder.writeTimeout

  /** Web socket and HTTP/2 ping interval (in milliseconds). By default pings are not sent. */
  @get:JvmName("pingIntervalMillis") val pingIntervalMillis: Int = builder.pingInterval
//心跳间隔