minor

Former-commit-id: 0bc9c92c519edda9e04be8481e16fd2fdcfc74c0
2025-12-20 03:17:04 +00:00 · 2020-06-25 13:04:36 +03:00
parent 3fa022738b
commit 836e641229
10 changed files with 151 additions and 3 deletions
--- a/_examples/response-writer/http2push/main.go
+++ b/_examples/response-writer/http2push/main.go
@@ -0,0 +1,40 @@
+// Server push lets the server preemptively "push" website assets
+// to the client without the user having explicitly asked for them.
+// When used with care, we can send what we know the user is going
+// to need for the page they’re requesting.
+package main
+
+import "github.com/kataras/iris/v12"
+
+func main() {
+	app := iris.New()
+	app.Get("/", pushHandler)
+	app.Get("/main.js", simpleAssetHandler)
+
+	app.Run(iris.TLS("127.0.0.1:443", "mycert.crt", "mykey.key"))
+	// $ openssl req -new -newkey rsa:4096 -x509 -sha256 \
+	// -days 365 -nodes -out mycert.crt -keyout mykey.key
+}
+
+func pushHandler(ctx iris.Context) {
+	// The target must either be an absolute path (like "/path") or an absolute
+	// URL that contains a valid host and the same scheme as the parent request.
+	// If the target is a path, it will inherit the scheme and host of the
+	// parent request.
+	target := "/main.js"
+	err := ctx.ResponseWriter().Push(target, nil)
+	if err != nil {
+		if err == iris.ErrPushNotSupported {
+			ctx.StopWithText(iris.StatusHTTPVersionNotSupported, "HTTP/2 push not supported.")
+		} else {
+			ctx.StopWithError(iris.StatusInternalServerError, err)
+		}
+		return
+	}
+
+	ctx.HTML(`<html><body><script src="%s"></script></body></html>`, target)
+}
+
+func simpleAssetHandler(ctx iris.Context) {
+	ctx.ServeFile("./public/main.js")
+}