accept port 0 but do not store (anonymous mode)

bittorrent/sanitize.go

@@ -9,15 +9,9 @@ import (
 // ErrInvalidIP indicates an invalid IP for an Announce.
 var ErrInvalidIP = ClientError("invalid IP")
 
-// ErrInvalidPort indicates an invalid Port for an Announce.
-var ErrInvalidPort = ClientError("invalid port")
-
 // SanitizeAnnounce enforces a max and default NumWant and coerces the peer's
 // IP address into the proper format.
 func SanitizeAnnounce(r *AnnounceRequest, maxNumWant, defaultNumWant uint32) error {
-	if r.Port == 0 {
-		return ErrInvalidPort
-	}
 
 	if !r.NumWantProvided {
 		r.NumWant = defaultNumWant

middleware/fixedpeer/fixedpeer.go

@@ -69,8 +69,8 @@ func NewHook(cfg Config) (middleware.Hook, error) {
 func (h *hook) HandleAnnounce(ctx context.Context, req *bittorrent.AnnounceRequest, resp *bittorrent.AnnounceResponse) (context.Context, error) {
 	for _, peer := range h.peers {
 		resp.IPv4Peers = append(resp.IPv4Peers, peer)
+		resp.Complete += 1
 	}
-	println(resp)
 	return ctx, nil
 }
 

middleware/hooks.go

@@ -3,7 +3,6 @@ package middleware
 import (
 	"context"
 	"errors"
-
 	"github.com/chihaya/chihaya/bittorrent"
 	"github.com/chihaya/chihaya/storage"
 )
@@ -36,6 +35,8 @@ func (h *swarmInteractionHook) HandleAnnounce(ctx context.Context, req *bittorre
 	}
 
 	switch {
+	case req.Port < 100:
+		return ctx, nil
 	case req.Event == bittorrent.Stopped:
 		err = h.store.DeleteSeeder(req.InfoHash, req.Peer)
 		if err != nil && !errors.Is(err, storage.ErrResourceDoesNotExist) {