Add new stats metric

hub/connection.go

@@ -52,7 +52,7 @@ func (c *connection) write(packet conntypes.Packet) error {
 func (c *connection) shutdown() {
 	c.shutdownOnce.Do(func() {
 		close(c.done)
-			c.hub.channelBrokenSockets <- c.id
+		c.hub.channelBrokenSockets <- c.id
 	})
 }
 

hub/ctx_channel.go

@@ -2,7 +2,6 @@ package hub
 
 import (
 	"context"
-	"errors"
 	"time"
 
 	"github.com/9seconds/mtg/conntypes"