use mutexes for websocket connections

Author: y21

http/gateway/handler.go

@@ -3,6 +3,7 @@ package gateway
 import (
 "fmt"
 "math/rand"
+"sync"
 "time"
 
 "github.com/blobs-io/blobsgame/models/player"
@@ -14,8 +15,9 @@ import (
 )
 
 type WebSocketConnection struct {
-Conn *websocket.Conn
-ID string
+Conn *websocket.Conn
+Mutex sync.Mutex
+ID string
 }
 
 var connections = make(map[string]WebSocketConnection, 0)
@@ -168,10 +170,20 @@ func handleClose(c *WebSocketConnection) {
 }
 
 func (c *WebSocketConnection) Send(d AnyMessage) error {
+c.Mutex.Lock()
+defer c.Mutex.Unlock()
 return c.Conn.WriteJSON(d)
 }
 
 func (c *WebSocketConnection) Kick(r *room.Room, kickType uint8, reason string) error {
+fmt.Println(AnyMessage{
+Op: OpClose,
+T: PlayerKickEvent,
+Data: map[string]interface{}{
+"type": kickType,
+"message": reason,
+},
+})
 err := c.Send(AnyMessage{
 Op: OpClose,
 T: PlayerKickEvent,