From 41ce47d6d708a3b4e578846dae2b23803f80ff34 Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Wed, 1 Jul 2020 19:41:01 +0100
Subject: [PATCH] Create a session on write if one does not exist

---
 src/yggdrasil/packetconn.go | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/yggdrasil/packetconn.go b/src/yggdrasil/packetconn.go
index be9c2043..43c75a8d 100644
--- a/src/yggdrasil/packetconn.go
+++ b/src/yggdrasil/packetconn.go
@@ -53,6 +53,9 @@ func (c *PacketConn) WriteTo(b []byte, addr net.Addr) (int, error) {
 
 	session, ok := c.sessions.getByTheirPerm(boxPubKey)
 	if !ok {
+		session = c.sessions.createSession(boxPubKey)
+	}
+	if session == nil {
 		return 0, errors.New("expected a session but there was none")
 	}