英文:
CloseNotifier for http ResponseWriter
问题
我正在使用Go 1.4.2版本，但是实现中似乎没有CloseNotifier，我想在长轮询处理程序中使用它，类似于：
func Pollhandler(w http.ResponseWriter, r *http.Request) {
notify := w.(CloseNotifier).CloseNotify()
<-notify //应该阻塞，直到HTTP连接关闭
}
CloseNotifier在http.ResponseWriter中没有实现吗？如果是这样，我该如何解决这个问题？或者是否有任何实现了CloseNotifier接口的http.ResponseWriter的实现？
英文:
i am using go 1.4.2 and the implementation doesn't seem to have CloseNotifier as i want to use it in a long polling handler with something like:
func Pollhandler(w http.ResponseWriter, r *http.Request) {
notify := w.(CloseNotifier).CloseNotify()
<-notify //should block until the http connection is closed
}
is the CloseNotifier not implemented for the http ResponseWriter? if so how can i get around this? or is there any implementation for http ResponseWriter that implements the CloseNotifier interface?
答案1
得分: 4
http.CloseNotifier自Go 1.1版本以来就存在了（http://golang.org/doc/go1.1）。你的代码不起作用是因为你忘记了包的部分：
notify := w.(http.CloseNotifier).CloseNotify()
英文:
http.CloseNotifier has been there since Go 1.1. Your code doesn't work because you forgot the package part:
notify := w.(http.CloseNotifier).CloseNotify()
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