From d9fe6f72ac9368537f1ee915d9851d6d215b7599 Mon Sep 17 00:00:00 2001
From: Neil Alexander <neilalexander@users.noreply.github.com>
Date: Sat, 24 Sep 2022 17:05:44 +0100
Subject: [PATCH] Lint tweaks

---
 src/core/core.go      |  4 ++--
 src/core/link.go      | 15 +++++++--------
 src/core/link_tcp.go  |  2 +-
 src/core/link_tls.go  |  2 +-
 src/core/link_unix.go |  2 +-
 5 files changed, 12 insertions(+), 13 deletions(-)

diff --git a/src/core/core.go b/src/core/core.go
index 4cc08ad..5cfcc7a 100644
--- a/src/core/core.go
+++ b/src/core/core.go
@@ -127,7 +127,7 @@ func (c *Core) _addPeerLoop() {
 func (c *Core) Stop() {
 	phony.Block(c, func() {
 		c.log.Infoln("Stopping...")
-		c._close()
+		_ = c._close()
 		c.log.Infoln("Stopped")
 	})
 }
@@ -135,7 +135,7 @@ func (c *Core) Stop() {
 // This function is unsafe and should only be ran by the core actor.
 func (c *Core) _close() error {
 	c.cancel()
-	_ = c.links.shutdown()
+	c.links.shutdown()
 	err := c.PacketConn.Close()
 	if c.addPeerTimer != nil {
 		c.addPeerTimer.Stop()
diff --git a/src/core/link.go b/src/core/link.go
index 939bb25..26e4466 100644
--- a/src/core/link.go
+++ b/src/core/link.go
@@ -82,23 +82,22 @@ func (l *links) init(c *Core) error {
 	return nil
 }
 
-func (l *links) shutdown() error {
+func (l *links) shutdown() {
 	phony.Block(l.tcp, func() {
 		for l := range l.tcp._listeners {
-			l.Close()
+			_ = l.Close()
 		}
 	})
 	phony.Block(l.tls, func() {
 		for l := range l.tls._listeners {
-			l.Close()
+			_ = l.Close()
 		}
 	})
 	phony.Block(l.unix, func() {
 		for l := range l.unix._listeners {
-			l.Close()
+			_ = l.Close()
 		}
 	})
-	return nil
 }
 
 func (l *links) isConnectedTo(info linkInfo) bool {
@@ -216,7 +215,7 @@ func (l *links) create(conn net.Conn, name string, info linkInfo, incoming, forc
 }
 
 func (intf *link) handler() error {
-	defer intf.conn.Close()
+	defer intf.conn.Close() // nolint:errcheck
 
 	// Don't connect to this link more than once.
 	if intf.links.isConnectedTo(intf.info) {
@@ -249,7 +248,7 @@ func (intf *link) handler() error {
 	if _, err = io.ReadFull(intf.conn, metaBytes); err != nil {
 		return fmt.Errorf("read handshake: %w", err)
 	}
-	if err := intf.conn.SetDeadline(time.Time{}); err != nil {
+	if err = intf.conn.SetDeadline(time.Time{}); err != nil {
 		return fmt.Errorf("failed to clear handshake deadline: %w", err)
 	}
 	meta = version_metadata{}
@@ -294,7 +293,7 @@ func (intf *link) handler() error {
 	if intf.incoming && !intf.force && !isallowed {
 		intf.links.core.log.Warnf("%s connection from %s forbidden: AllowedEncryptionPublicKeys does not contain key %s",
 			strings.ToUpper(intf.info.linkType), intf.info.remote, hex.EncodeToString(meta.key))
-		intf.close()
+		_ = intf.close()
 		return fmt.Errorf("forbidden connection")
 	}
 
diff --git a/src/core/link_tcp.go b/src/core/link_tcp.go
index fcac8b4..c5a73c9 100644
--- a/src/core/link_tcp.go
+++ b/src/core/link_tcp.go
@@ -89,7 +89,7 @@ func (l *linkTCP) listen(url *url.URL, sintf string) (*Listener, error) {
 				l.core.log.Errorln("Failed to create inbound link:", err)
 			}
 		}
-		listener.Close()
+		_ = listener.Close()
 		close(entry.closed)
 		l.core.log.Printf("TCP listener stopped on %s", listener.Addr())
 	}()
diff --git a/src/core/link_tls.go b/src/core/link_tls.go
index e6ffd5a..1e932b6 100644
--- a/src/core/link_tls.go
+++ b/src/core/link_tls.go
@@ -112,7 +112,7 @@ func (l *linkTLS) listen(url *url.URL, sintf string) (*Listener, error) {
 				l.core.log.Errorln("Failed to create inbound link:", err)
 			}
 		}
-		tlslistener.Close()
+		_ = tlslistener.Close()
 		close(entry.closed)
 		l.core.log.Printf("TLS listener stopped on %s", listener.Addr())
 	}()
diff --git a/src/core/link_unix.go b/src/core/link_unix.go
index d63c1d9..e71f936 100644
--- a/src/core/link_unix.go
+++ b/src/core/link_unix.go
@@ -79,7 +79,7 @@ func (l *linkUNIX) listen(url *url.URL, _ string) (*Listener, error) {
 				l.core.log.Errorln("Failed to create inbound link:", err)
 			}
 		}
-		listener.Close()
+		_ = listener.Close()
 		close(entry.closed)
 		l.core.log.Printf("UNIX listener stopped on %s", listener.Addr())
 	}()