HTTP/2 服务器推送
最后更新于：2022-04-02 07:27:23
`http.Pusher`只支持Go 1.8或更高版本，有关详细信息，请参阅[golang博客](https://blog.golang.org/h2push)
```
package main
import (
"html/template"
"log"
"github.com/gin-gonic/gin"
)
var html = template.Must(template.New("https").Parse(`
Https Test
Welcome, Ginner!
`))
func main() {
r := gin.Default()
r.Static("/assets", "./assets")
r.SetHTMLTemplate(html)
r.GET("/", func(c *gin.Context) {
if pusher := c.Writer.Pusher(); pusher != nil {
// use pusher.Push() to do server push
if err := pusher.Push("/assets/app.js", nil); err != nil {
log.Printf("Failed to push: %v", err)
}
}
c.HTML(200, "https", gin.H{
"status": "success",
})
})
// Listen and Server in https://127.0.0.1:8080
r.RunTLS(":8080", "./testdata/server.pem", "./testdata/server.key")
}
```
';