Add letsencrypt example

1 files changed, 40 insertions, 0 deletions

diff --git a/examples/letsencrypt/letsencryptserver.go b/examples/letsencrypt/letsencryptserver.go
new file mode 100644
index 0000000..b6a0b91
--- /dev/null
+++ b/examples/letsencrypt/letsencryptserver.go
@@ -0,0 +1,40 @@
+package main
+
+import (
+	"crypto/tls"
+	"net"
+
+	"github.com/valyala/fasthttp"
+	"golang.org/x/crypto/acme"
+	"golang.org/x/crypto/acme/autocert"
+)
+
+func requestHandler(ctx *fasthttp.RequestCtx) {
+	ctx.SetBodyString("hello from https!")
+}
+
+func main() {
+	m := &autocert.Manager{
+		Prompt:     autocert.AcceptTOS,
+		HostPolicy: autocert.HostWhitelist("example.com"), // Replace with your domain.
+		Cache:      autocert.DirCache("./certs"),
+	}
+
+	cfg := &tls.Config{
+		GetCertificate: m.GetCertificate,
+		NextProtos: []string{
+			"http/1.1", acme.ALPNProto,
+		},
+	}
+
+	ln, err := net.Listen("tcp4", "0.0.0.0:443") // Let's Encrypt tls-alpn-01 only works on port 443.
+	if err != nil {
+		panic(err)
+	}
+
+	lnTls := tls.NewListener(ln, cfg)
+
+	if err := fasthttp.Serve(lnTls, requestHandler); err != nil {
+		panic(err)
+	}
+}