chore: avoid unneeded map copy when close connection in restful api

tunnel/statistic/manager.go

@@ -38,11 +38,11 @@ type Manager struct {
 	memory        uint64
 }
 
-func (m *Manager) Join(c tracker) {
+func (m *Manager) Join(c Tracker) {
 	m.connections.Store(c.ID(), c)
 }
 
-func (m *Manager) Leave(c tracker) {
+func (m *Manager) Leave(c Tracker) {
 	m.connections.Delete(c.ID())
 }
 
@@ -66,9 +66,9 @@ func (m *Manager) Memory() uint64 {
 }
 
 func (m *Manager) Snapshot() *Snapshot {
-	connections := []tracker{}
+	connections := []Tracker{}
 	m.connections.Range(func(key, value any) bool {
-		connections = append(connections, value.(tracker))
+		connections = append(connections, value.(Tracker))
 		return true
 	})
 	return &Snapshot{
@@ -79,6 +79,12 @@ func (m *Manager) Snapshot() *Snapshot {
 	}
 }
 
+func (m *Manager) ConnectionsRange(f func(c Tracker) bool) {
+	m.connections.Range(func(key, value any) bool {
+		return f(value.(Tracker))
+	})
+}
+
 func (m *Manager) updateMemory() {
 	stat, err := m.process.MemoryInfo()
 	if err != nil {
@@ -110,6 +116,6 @@ func (m *Manager) handle() {
 type Snapshot struct {
 	DownloadTotal int64     `json:"downloadTotal"`
 	UploadTotal   int64     `json:"uploadTotal"`
-	Connections   []tracker `json:"connections"`
+	Connections   []Tracker `json:"connections"`
 	Memory        uint64    `json:"memory"`
 }

tunnel/statistic/tracker.go

@@ -15,7 +15,7 @@ import (
 	"github.com/gofrs/uuid/v5"
 )
 
-type tracker interface {
+type Tracker interface {
 	ID() string
 	Close() error
 	C.Connection