From: Matt Joiner <anacrolix@gmail.com>
Date: Thu, 29 Dec 2022 08:41:36 +0000 (+1100)
Subject: Resize packet buffer to avoid wasting memory
X-Git-Tag: v1.49.0~7^2~5
X-Git-Url: http://www.git.stargrave.org/?a=commitdiff_plain;h=4f8826483ead1e42b27783d3e8d234610b3ab02c;p=btrtrc.git

Resize packet buffer to avoid wasting memory
---

diff --git a/tracker/udp/server/server.go b/tracker/udp/server/server.go
index cd9d9f0f..c686a23d 100644
--- a/tracker/udp/server/server.go
+++ b/tracker/udp/server/server.go
@@ -205,14 +205,15 @@ func randomConnectionId() udp.ConnectionId {
 func RunSimple(ctx context.Context, s *Server, pc net.PacketConn, family udp.AddrFamily) error {
 	ctx, cancel := context.WithCancel(ctx)
 	defer cancel()
+	var b [1500]byte
 	for {
-		var b [1500]byte
 		n, addr, err := pc.ReadFrom(b[:])
 		if err != nil {
 			return err
 		}
+		b := append([]byte(nil), b[:n]...)
 		go func() {
-			err := s.HandleRequest(ctx, family, addr, b[:n])
+			err := s.HandleRequest(ctx, family, addr, b)
 			if err != nil {
 				log.Printf("error handling %v byte request from %v: %v", n, addr, err)
 			}