mirror of
https://github.com/kataras/iris.git
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41 lines
1.3 KiB
Go
41 lines
1.3 KiB
Go
// Server push lets the server preemptively "push" website assets
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// to the client without the user having explicitly asked for them.
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// When used with care, we can send what we know the user is going
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// to need for the page they’re requesting.
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package main
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import "github.com/kataras/iris/v12"
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func main() {
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app := iris.New()
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app.Get("/", pushHandler)
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app.Get("/main.js", simpleAssetHandler)
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app.Run(iris.TLS("127.0.0.1:443", "mycert.crt", "mykey.key"))
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// $ openssl req -new -newkey rsa:4096 -x509 -sha256 \
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// -days 365 -nodes -out mycert.crt -keyout mykey.key
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}
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func pushHandler(ctx iris.Context) {
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// The target must either be an absolute path (like "/path") or an absolute
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// URL that contains a valid host and the same scheme as the parent request.
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// If the target is a path, it will inherit the scheme and host of the
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// parent request.
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target := "/main.js"
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err := ctx.ResponseWriter().Push(target, nil)
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if err != nil {
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if err == iris.ErrPushNotSupported {
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ctx.StopWithText(iris.StatusHTTPVersionNotSupported, "HTTP/2 push not supported.")
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} else {
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ctx.StopWithError(iris.StatusInternalServerError, err)
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}
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return
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}
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ctx.HTML(`<html><body><script src="%s"></script></body></html>`, target)
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}
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func simpleAssetHandler(ctx iris.Context) {
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ctx.ServeFile("./public/main.js")
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}
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