refactor: 重构ActiveMQ和Rsync插件使用统一发包控制

- 修改ActiveMQ插件，在STOMP连接中添加发包控制检查
- 修改Rsync插件，在TCP连接和服务识别中添加发包控制
- 统一包计数逻辑，确保TCP连接成功和失败都正确计数
- 保持现有消息队列和文件同步服务检测功能

plugins/services/activemq.go

@@ -61,6 +61,12 @@ func (p *ActiveMQPlugin) Scan(ctx context.Context, info *common.HostInfo) *ScanR
 }
 
 func (p *ActiveMQPlugin) testCredential(ctx context.Context, info *common.HostInfo, cred Credential) bool {
+	// 检查发包限制
+	if canSend, reason := common.CanSendPacket(); !canSend {
+		common.LogError(fmt.Sprintf("ActiveMQ连接 %s:%s 受限: %s", info.Host, info.Ports, reason))
+		return false
+	}
+	
 	target := fmt.Sprintf("%s:%s", info.Host, info.Ports)
 	timeout := time.Duration(common.Timeout) * time.Second
 
@@ -104,6 +110,17 @@ func (p *ActiveMQPlugin) authenticateSTOMP(conn net.Conn, username, password str
 
 func (p *ActiveMQPlugin) identifyService(info *common.HostInfo) *ScanResult {
 	target := fmt.Sprintf("%s:%s", info.Host, info.Ports)
+	
+	// 检查发包限制
+	if canSend, reason := common.CanSendPacket(); !canSend {
+		common.LogError(fmt.Sprintf("ActiveMQ识别 %s 受限: %s", target, reason))
+		return &ScanResult{
+			Success: false,
+			Service: "activemq",
+			Error:   fmt.Errorf("发包受限: %s", reason),
+		}
+	}
+	
 	timeout := time.Duration(common.Timeout) * time.Second
 
 	conn, err := common.WrapperTcpWithTimeout("tcp", target, timeout)

plugins/services/rsync.go

@@ -91,12 +91,21 @@ func (p *RsyncPlugin) testCredential(ctx context.Context, info *common.HostInfo,
 
 func (p *RsyncPlugin) connectToRsync(ctx context.Context, info *common.HostInfo) net.Conn {
 	target := fmt.Sprintf("%s:%s", info.Host, info.Ports)
+	
+	// 检查发包限制
+	if canSend, reason := common.CanSendPacket(); !canSend {
+		common.LogError(fmt.Sprintf("Rsync连接 %s 受限: %s", target, reason))
+		return nil
+	}
+	
 	timeout := time.Duration(common.Timeout) * time.Second
 
 	conn, err := net.DialTimeout("tcp", target, timeout)
 	if err != nil {
+		common.IncrementTCPFailedPacketCount()
 		return nil
 	}
+	common.IncrementTCPSuccessPacketCount()
 
 	conn.SetDeadline(time.Now().Add(timeout))
 	return conn
@@ -137,6 +146,16 @@ func (p *RsyncPlugin) getModules(conn net.Conn) []string {
 func (p *RsyncPlugin) identifyService(ctx context.Context, info *common.HostInfo) *ScanResult {
 	target := fmt.Sprintf("%s:%s", info.Host, info.Ports)
 
+	// 检查发包限制
+	if canSend, reason := common.CanSendPacket(); !canSend {
+		common.LogError(fmt.Sprintf("Rsync识别 %s 受限: %s", target, reason))
+		return &ScanResult{
+			Success: false,
+			Service: "rsync",
+			Error:   fmt.Errorf("发包受限: %s", reason),
+		}
+	}
+
 	conn := p.connectToRsync(ctx, info)
 	if conn == nil {
 		return &ScanResult{