HTTP And HTTPS On Same Port

🌐 Listen HTTP and HTTPS on the same port using Golang.

If you only need HTTP redirect to HTTPS, recommended use github.com/bddjr/hlfhr

Setup

go get -u github.com/bddjr/hahosp@latest

srv := &http.Server{
    Addr:    ":5688"
    // Use [hahosp.HandlerSelector]
    Handler: &hahosp.HandlerSelector{
        HTTPS: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
            io.WriteString(w, "ok\n")
        }),
        HTTP: nil, // If nil, redirect to HTTPS.
    },
}

// Use [hahosp.ListenAndServeTLS]
err := hahosp.ListenAndServeTLS(srv, "localhost.crt", "localhost.key")

---

Versus

github.com/bddjr/hahosp VS github.com/bddjr/hlfhr

Feature	hahosp	hlfhr
WebSocket on HTTP (not HTTPS)	✅	❌ Unsupport http.Hijacker
Keep alive on HTTP (not HTTPS)	✅	❌
Without modify type http.Server	✅	❌ Need modity to hlfhr.Server
Redirect to HTTPS without modify Server.Handler	❌ Need modify to hahosp.HandlerSelector	✅
Listen 80 redirect to 443	❌	✅ Need config
Without modify Server.ListenAndServeTLS	❌ Need modify to hahosp.ListenAndServeTLS	✅

---

Logic

flowchart TD
	VirtualListener("Hijacking net.Listener")
    VirtualAccept("🔄📥Virtual accept")
    Accept("🔄 Accept")
    Serve(["✅ serve..."])
	LooksLike{{"Read first byte looks like ?"}}
	Close(["❌ Close."])
    HijackingNetConn("Hijacking net.Conn")
    SentToVA(["📤Send to Virtual accept"])
    NewTLS("New tls.Conn")

    VirtualListener -- "http.Server Serve" --> VirtualAccept -- "async" --> Serve
    VirtualListener -- "async hahosp Serve" --> Accept -- "async"  --> HijackingNetConn --> LooksLike
    LooksLike -- "❓Unknown" --> Close
    LooksLike -- "📄HTTP" --> SentToVA
    LooksLike -- "🔐TLS" --> NewTLS --> SentToVA

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