bring in khatru and eventstore.

khatru/websocket.go

@@ -0,0 +1,46 @@
+package khatru
+
+import (
+	"context"
+	"net/http"
+	"sync"
+
+	"github.com/fasthttp/websocket"
+	"github.com/puzpuzpuz/xsync/v3"
+)
+
+type WebSocket struct {
+	conn  *websocket.Conn
+	mutex sync.Mutex
+
+	// original request
+	Request *http.Request
+
+	// this Context will be canceled whenever the connection is closed from the client side or server-side.
+	Context context.Context
+	cancel  context.CancelFunc
+
+	// nip42
+	Challenge       string
+	AuthedPublicKey string
+	Authed          chan struct{}
+
+	// nip77
+	negentropySessions *xsync.MapOf[string, *NegentropySession]
+
+	authLock sync.Mutex
+}
+
+func (ws *WebSocket) WriteJSON(any any) error {
+	ws.mutex.Lock()
+	err := ws.conn.WriteJSON(any)
+	ws.mutex.Unlock()
+	return err
+}
+
+func (ws *WebSocket) WriteMessage(t int, b []byte) error {
+	ws.mutex.Lock()
+	err := ws.conn.WriteMessage(t, b)
+	ws.mutex.Unlock()
+	return err
+}