HttpComponents Core 5.0 alpha4 发布
>>>https://my.oschina.net/img/hot3.pnghttps://www.oschina.net/img/logo/httpclient.gif?t=1451964198000 HttpComponents Core 5.0 alpha4 已发布，这是一个主要版本，它的 HttpCore API 与稳定的 4.x 分支不兼容，并根据最新协议规范的要求和建议升级了 HTTP/1.1和 HTTP/2 协议。
5.0 系列中部分值得关注的变更和功能：
[*] Support for HTTP/2 protocol and conformance to requirements and recommendations of the latest HTTP/2 protocol specification (RFC 7540,RFC 7541)
[*] Improved conformance to requirements and recommendations of the latest HTTP/1.1 protocol specification (RFC 7230, RFC 7231)
[*] New asynchronous HTTP transport APIs consistent for both HTTP/1.1 and HTTP/2 transport.
[*] Redesigned I/O reactor APIs and improved NIO based reactor implementation for a greater performance and scalability.
详情请参阅发布主页和更新说明
请注意，从 5.0 开始，HttpCore 需要 Java 1.7 或更高版本。
下载地址
[*] http://hc.apache.org/downloads.cgi
HttpComponents 也就是以前的 httpclient 项目，可以用来提供高效的、最新的、功能丰富的支持 HTTP 协议的客户端/服务器编程工具包，并且它支持 HTTP 协议最新的版本和建议。不过现在的 HttpComponents 包含多个子项目，有：
[*] HttpComponents Core
[*] HttpComponents Client
[*] HttpComponents AsyncClient
[*] Commons HttpClient
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