From: Matt Joiner <anacrolix@gmail.com>
Date: Wed, 23 Jun 2021 02:41:25 +0000 (+1000)
Subject: Reject accepted connections if we don't want conns
X-Git-Tag: v1.29.0~14
X-Git-Url: http://www.git.stargrave.org/?a=commitdiff_plain;h=99f3e9ad3dc0fad1cc71e479719681418c3189b5;p=btrtrc.git

Reject accepted connections if we don't want conns

This prevents unnecessarily stalling peers dialling us if we have no intention to ever accept.
---

diff --git a/client.go b/client.go
index e0092556..1f2af67f 100644
--- a/client.go
+++ b/client.go
@@ -460,6 +460,9 @@ func (cl *Client) waitAccept() {
 
 // TODO: Apply filters for non-standard networks, particularly rate-limiting.
 func (cl *Client) rejectAccepted(conn net.Conn) error {
+	if !cl.wantConns() {
+		return errors.New("don't want conns right now")
+	}
 	ra := conn.RemoteAddr()
 	if rip := addrIpOrNil(ra); rip != nil {
 		if cl.config.DisableIPv4Peers && rip.To4() != nil {