From 8bb1a3bdf7671806c9c16a78f63a1526c958226a Mon Sep 17 00:00:00 2001
From: Kleissner <peter@kleissner.investments>
Date: Mon, 19 Apr 2021 15:32:14 +0200
Subject: [PATCH] GetRTT function

---
 Connection.go | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Connection.go b/Connection.go
index b7d7db7..f25defb 100644
--- a/Connection.go
+++ b/Connection.go
@@ -223,6 +223,24 @@ func (peer *PeerInfo) removeInactiveConnection(input *Connection) {
 	}
 }
 
+// GetRTT returns the round-trip time for the most recent active connection. 0 if not available.
+func (peer *PeerInfo) GetRTT() (rtt time.Duration) {
+	peer.Lock()
+	defer peer.Unlock()
+
+	if peer.connectionLatest != nil && peer.connectionLatest.RoundTripTime > 0 {
+		return peer.connectionLatest.RoundTripTime
+	}
+
+	for _, connection := range peer.connectionActive {
+		if connection.RoundTripTime > 0 {
+			return connection.RoundTripTime
+		}
+	}
+
+	return 0
+}
+
 // ---- sending code ----
 
 // send sends a raw packet to the peer. Only uses active connections.