From 3371522119dc054841c5ad783fafbdf0c69ad28d Mon Sep 17 00:00:00 2001
From: Matt Joiner <anacrolix@gmail.com>
Date: Fri, 16 Dec 2022 15:39:02 +1100
Subject: [PATCH] Use port from announce request, not packet source

---
 tracker/server.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/tracker/server.go b/tracker/server.go
index 6ef4ec4e..22f54da5 100644
--- a/tracker/server.go
+++ b/tracker/server.go
@@ -3,6 +3,7 @@ package tracker
 import (
 	"context"
 	"encoding/hex"
+	"fmt"
 	"net/netip"
 	"sync"
 	"time"
@@ -123,8 +124,12 @@ func (me *AnnounceHandler) Serve(
 		}
 	}()
 
+	if req.Port != 0 {
+		addr = netip.AddrPortFrom(addr.Addr(), req.Port)
+	}
 	ret.Err = me.AnnounceTracker.TrackAnnounce(ctx, req, addr)
 	if ret.Err != nil {
+		ret.Err = fmt.Errorf("tracking announce: %w", ret.Err)
 		return
 	}
 	infoHash := req.InfoHash
-- 
2.44.0