ngx.socket.udp -------------- **语法:** *udpsock = ngx.socket.udp()* **环境:** *rewrite_by_lua*, access_by_lua*, content_by_lua*, ngx.timer.** 创建并得到一个 UDP 或 unix 域数据报 socket 对象（也被称为 "cosocket" 对象的一种类型）。该对象支持下面这些方法： * [setpeername](#udpsocksetpeername) * [send](#udpsocksend) * [receive](#udpsockreceive) * [close](#udpsockclose) * [settimeout](#udpsocksettimeout) 兼容 [LuaSocket](http://w3.impa.br/~diego/software/luasocket/udp.html) 库的 UDP API 是需要的，额外的它却是 100% 非阻塞。 该特性是在 `v0.5.7` 版本首次引入的。 也可以看看 [ngx.socket.tcp](#ngxsockettcp) 。 [返回目录](#nginx-api-for-lua) > English source: ngx.socket.udp -------------- **syntax:** *udpsock = ngx.socket.udp()* **context:** *rewrite_by_lua*, access_by_lua*, content_by_lua*, ngx.timer.** Creates and returns a UDP or datagram-oriented unix domain socket object (also known as one type of the "cosocket" objects). The following methods are supported on this object: * [setpeername](#udpsocksetpeername) * [send](#udpsocksend) * [receive](#udpsockreceive) * [close](#udpsockclose) * [settimeout](#udpsocksettimeout) It is intended to be compatible with the UDP API of the [LuaSocket](http://w3.impa.br/~diego/software/luasocket/udp.html) library but is 100% nonblocking out of the box. This feature was first introduced in the `v0.5.7` release. See also [ngx.socket.tcp](#ngxsockettcp). [Back to TOC](#nginx-api-for-lua)