Changing (evt Event) MarshalJSON to avoid string escaping bug

event_aux.go

@@ -106,7 +106,7 @@ func fastjsonArrayToTags(v *fastjson.Value) (Tags, error) {
 }
 
 // MarshalJSON() returns the JSON byte encoding of the event, as in NIP-01.
-func (evt *Event) MarshalJSON() ([]byte, error) {
+func (evt Event) MarshalJSON() ([]byte, error) {
 	dst := make([]byte, 0)
 	dst = append(dst, '{')
 	dst = append(dst, []byte(fmt.Sprintf("\"id\":\"%s\",\"pubkey\":\"%s\",\"created_at\":%d,\"kind\":%d,\"tags\":",

relay.go

@@ -229,15 +229,7 @@ func (r *Relay) Publish(ctx context.Context, event Event) Status {
 	defer r.okCallbacks.Delete(event.ID)
 
 	// publish event
-	message := []byte("[\"EVENT\",")
-	if m, e := event.MarshalJSON(); e == nil {
-		message = append(message, m...)
-		message = append(message, ']')
-	} else {
-		return status
-	}
-
-	if err := r.Connection.WriteMessage(websocket.TextMessage, message); err != nil {
+	if err := r.Connection.WriteJSON([]interface{}{"EVENT", event}); err != nil {
 		return status
 	}
 

tags.go

@@ -12,15 +12,10 @@ type Tag []string
 
 // StartsWith checks if a tag contains a prefix.
 // for example,
-//
 //	["p", "abcdef...", "wss://relay.com"]
-//
 // would match against
-//
 //	["p", "abcdef..."]
-//
 // or even
-//
 //	["p", "abcdef...", "wss://"]
 func (tag Tag) StartsWith(prefix []string) bool {
 	prefixLen := len(prefix)
@@ -160,7 +155,8 @@ func (tag Tag) marshalTo(dst []byte) []byte {
 	return dst
 }
 
-// Marshal Tags. Used for Serialization so string escaping should be as in RFC8259.
+// MarshalTo appends the JSON encoded byte of Tags as [][]string to dst.
+// String escaping is as described in RFC8259.
 func (tags Tags) marshalTo(dst []byte) []byte {
 	dst = append(dst, '[')
 	for i, tag := range tags {