Enhance ICE handshake with session ID management and improve message handling

signal/client/worker.go

@@ -0,0 +1,57 @@
+package client
+
+import (
+	"context"
+	"fmt"
+
+	log "github.com/sirupsen/logrus"
+
+	"github.com/netbirdio/netbird/signal/proto"
+)
+
+type Worker struct {
+	decryptMessage func(msg *proto.EncryptedMessage) (*proto.Message, error)
+	handler        func(msg *proto.Message) error
+
+	encryptedMsgPool chan *proto.EncryptedMessage
+}
+
+func NewWorker(decryptFn func(msg *proto.EncryptedMessage) (*proto.Message, error), handlerFn func(msg *proto.Message) error) *Worker {
+	return &Worker{
+		decryptMessage:   decryptFn,
+		handler:          handlerFn,
+		encryptedMsgPool: make(chan *proto.EncryptedMessage, 1),
+	}
+}
+
+func (w *Worker) AddMsg(msg *proto.EncryptedMessage) error {
+	if w.encryptedMsgPool == nil {
+		return fmt.Errorf("worker is not initialized")
+	}
+
+	// this is blocker because do not want to drop messages here
+	w.encryptedMsgPool <- msg
+	return nil
+}
+
+func (w *Worker) Work(ctx context.Context) {
+	for {
+		select {
+		case msg := <-w.encryptedMsgPool:
+			decryptedMessage, err := w.decryptMessage(msg)
+			if err != nil {
+				log.Errorf("failed to decrypt message: %v", err)
+				continue
+			}
+
+			if err := w.handler(decryptedMessage); err != nil {
+				log.Errorf("failed to handle message: %v", err)
+				continue
+			}
+
+		case <-ctx.Done():
+			log.Debugf("Message worker stopping due to context cancellation")
+			return
+		}
+	}
+}