From 1be942686e1fc91346121c9c8f1457f076250ab9 Mon Sep 17 00:00:00 2001
From: Maxime THIEBAUT <46688461+0xThiebaut@users.noreply.github.com>
Date: Fri, 24 Oct 2025 20:35:48 +0200
Subject: [PATCH] Expose ServerHello (un)marshal

Allow external code to parse raw server hellos, similar to the
client hellos.
---
 u_public.go | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/u_public.go b/u_public.go
index 7b2461c0..76bc876c 100644
--- a/u_public.go
+++ b/u_public.go
@@ -352,6 +352,22 @@ func (shm *serverHelloMsg) getPublicPtr() *PubServerHelloMsg {
 	}
 }
 
+// UnmarshalServerHello allows external code to parse raw server hellos.
+// It returns nil on failure.
+func UnmarshalServerHello(data []byte) *PubServerHelloMsg {
+	m := &serverHelloMsg{}
+	if m.unmarshal(data) {
+		return m.getPublicPtr()
+	}
+	return nil
+}
+
+// Marshal allows external code to convert a ServerHello object back into
+// raw bytes.
+func (shm *PubServerHelloMsg) Marshal() ([]byte, error) {
+	return shm.getPrivatePtr().marshal()
+}
+
 type PubClientHelloMsg struct {
 	Raw                          []byte // renamed to clientHelloMsg.original in crypto/tls
 	Vers                         uint16