These classes also support most HTTP 1.1 Features, including pipelining, chunking, authentication, preauthentication, encryption, proxy support, server certificate validation, and connection management.

• 这些类还支持大部分的HTTP 1.；1功能；其中包括管线、块区、身份验证、预身份验证、加密、代理支持、服务器证书验证以及连接管理。