perf: 六项性能优化

- DNS 解析缓存：sync.Map 缓存避免重复系统调用
- 凭据测试 TCP 预检：不可达目标直接跳过全部凭据
- Web 探测 HTTP Client 复用：全局共享连接池
- 端口扫描 Bloom Filter 去重：替代 map 降低内存
- 进度条 atomic 累加 + 50ms 节流渲染：消除锁竞争
- 服务探针预解码：Init 时预编译，运行时零解码开销

common/dns_cache.go

@@ -0,0 +1,27 @@
+package common
+
+import (
+	"net"
+	"sync"
+)
+
+// DNSCache 并发安全的 DNS 解析缓存
+// 对纯 IP 输入零开销（直接返回），对域名避免重复系统调用
+var DNSCache = &dnsCache{}
+
+type dnsCache struct {
+	m sync.Map // host -> *net.IPAddr
+}
+
+// ResolveIP 解析 host 为 *net.IPAddr，结果缓存
+func (c *dnsCache) ResolveIP(host string) (*net.IPAddr, error) {
+	if v, ok := c.m.Load(host); ok {
+		return v.(*net.IPAddr), nil
+	}
+	addr, err := net.ResolveIPAddr("ip", host)
+	if err != nil {
+		return nil, err
+	}
+	c.m.Store(host, addr)
+	return addr, nil
+}

common/progress_manager.go

@@ -143,16 +143,24 @@ func (pm *ProgressManager) UpdateProgress(increment int64) {
 		return
 	}
 
-	pm.mu.Lock()
-	defer pm.mu.Unlock()
-
-	pm.current += increment
-	if pm.current > pm.total {
-		pm.current = pm.total
+	// 原子累加，避免高并发下的锁竞争
+	newCurrent := atomic.AddInt64(&pm.current, increment)
+	if newCurrent > pm.total {
+		atomic.StoreInt64(&pm.current, pm.total)
 	}
 
-	// 更新活跃时间
-	pm.lastActivity = time.Now()
+	// 节流渲染：距上次渲染不足 50ms 则跳过
+	now := time.Now()
+	pm.mu.RLock()
+	lastAct := pm.lastActivity
+	pm.mu.RUnlock()
+	if now.Sub(lastAct) < 50*time.Millisecond {
+		return
+	}
+
+	pm.mu.Lock()
+	pm.lastActivity = now
+	pm.mu.Unlock()
 
 	pm.renderProgress()
 }
@@ -170,7 +178,7 @@ func (pm *ProgressManager) FinishProgress() {
 	pm.mu.Lock()
 	defer pm.mu.Unlock()
 
-	pm.current = pm.total
+	atomic.StoreInt64(&pm.current, pm.total)
 	pm.renderProgress()
 
 	// 停止活跃指示器
@@ -220,11 +228,12 @@ func (pm *ProgressManager) generateProgressBar() string {
 		return base
 	}
 
-	percentage := float64(pm.current) / float64(pm.total) * 100
+	percentage := float64(atomic.LoadInt64(&pm.current)) / float64(pm.total) * 100
 	elapsed := time.Since(pm.startTime)
+	current := atomic.LoadInt64(&pm.current)
 
 	// 计算速度
-	speed := float64(pm.current) / elapsed.Seconds()
+	speed := float64(current) / elapsed.Seconds()
 	speedStr := ""
 	if speed > 0 {
 		speedStr = fmt.Sprintf(" %.0f/s", speed)
@@ -232,8 +241,8 @@ func (pm *ProgressManager) generateProgressBar() string {
 
 	// 计算预估剩余时间
 	var eta string
-	if pm.current > 0 && pm.current < pm.total {
-		totalTime := elapsed * time.Duration(pm.total) / time.Duration(pm.current)
+	if current > 0 && current < pm.total {
+		totalTime := elapsed * time.Duration(pm.total) / time.Duration(current)
 		remaining := totalTime - elapsed
 		if remaining > 0 {
 			eta = fmt.Sprintf(" ETA:%s", formatDuration(remaining))
@@ -245,7 +254,7 @@ func (pm *ProgressManager) generateProgressBar() string {
 
 	// 计算固定部分的宽度
 	fixedPart := fmt.Sprintf("%s %s %5.1f%% [] (%d/%d)%s%s %s",
-		pm.description, spinner, percentage, pm.current, pm.total, speedStr, eta, packetInfo)
+		pm.description, spinner, percentage, current, pm.total, speedStr, eta, packetInfo)
 	fixedWidth := displayWidth(fixedPart)
 
 	// 计算进度条槽位可用宽度（预留2字符余量）
@@ -272,7 +281,7 @@ func (pm *ProgressManager) generateProgressBar() string {
 
 	// 构建最终进度条
 	result := fmt.Sprintf("%s %s %5.1f%% %s (%d/%d)%s%s",
-		pm.description, spinner, percentage, bar, pm.current, pm.total, speedStr, eta)
+		pm.description, spinner, percentage, bar, current, pm.total, speedStr, eta)
 
 	if packetInfo != "" {
 		result += " " + packetInfo
@@ -470,7 +479,7 @@ func (pm *ProgressManager) GetPercent() float64 {
 	if !pm.isActive || pm.total == 0 {
 		return 0
 	}
-	return float64(pm.current) / float64(pm.total) * 100
+	return float64(atomic.LoadInt64(&pm.current)) / float64(pm.total) * 100
 }
 
 // =============================================================================
@@ -512,7 +521,7 @@ func (pm *ProgressManager) renderProgressUnsafe() {
 	// 计算当前百分比（避免除零）
 	currentPercent := 0
 	if pm.total > 0 {
-		currentPercent = int((pm.current * 100) / pm.total)
+		currentPercent = int((atomic.LoadInt64(&pm.current) * 100) / pm.total)
 	}
 
 	// 只在百分比变化时更新，减少不必要的渲染

core/icmp.go

@@ -391,7 +391,7 @@ func RunIcmp1(hostslist []string, conn *icmp.PacketConn, chanHosts chan string,
 	}
 	packets := make([]icmpPacket, 0, len(hostslist))
 	for _, host := range hostslist {
-		dst, _ := net.ResolveIPAddr("ip", host)
+		dst, _ := common.DNSCache.ResolveIP(host)
 		packets = append(packets, icmpPacket{data: makemsg(host), dst: dst})
 	}
 

core/port_scan.go

@@ -39,17 +39,22 @@ var resourceExhaustedPatterns = []string{
 }
 
 // resultCollector 结果收集器，用于并发安全地收集扫描结果
-// 使用 map 实现：O(1) 的添加和删除，无顺序依赖问题
+// 使用 Bloom Filter 去重 + slice 存储，大规模扫描时内存更优
 type resultCollector struct {
 	mu     sync.Mutex
-	addrs  map[string]struct{}
+	addrs  []string
+	bloom  *BloomFilter
 	stream chan<- string // 可选：流式通知 channel
 }
 
 // newResultCollector 创建结果收集器
-func newResultCollector(stream chan<- string) *resultCollector {
+func newResultCollector(stream chan<- string, expectedSize int) *resultCollector {
+	if expectedSize < 1024 {
+		expectedSize = 1024
+	}
 	return &resultCollector{
-		addrs:  make(map[string]struct{}),
+		addrs:  make([]string, 0, expectedSize/10),
+		bloom:  NewBloomFilter(expectedSize, 0.001),
 		stream: stream,
 	}
 }
@@ -57,7 +62,12 @@ func newResultCollector(stream chan<- string) *resultCollector {
 // Add 添加一个扫描结果
 func (c *resultCollector) Add(addr string) {
 	c.mu.Lock()
-	c.addrs[addr] = struct{}{}
+	if c.bloom.Contains(addr) {
+		c.mu.Unlock()
+		return
+	}
+	c.bloom.Add(addr)
+	c.addrs = append(c.addrs, addr)
 	c.mu.Unlock()
 	if c.stream != nil {
 		c.stream <- addr
@@ -67,10 +77,8 @@ func (c *resultCollector) Add(addr string) {
 // GetAll 获取所有结果
 func (c *resultCollector) GetAll() []string {
 	c.mu.Lock()
-	result := make([]string, 0, len(c.addrs))
-	for addr := range c.addrs {
-		result = append(result, addr)
-	}
+	result := make([]string, len(c.addrs))
+	copy(result, c.addrs)
 	c.mu.Unlock()
 	return result
 }
@@ -181,7 +189,7 @@ func EnhancedPortScan(ctx context.Context, hosts []string, ports string, timeout
 	to := time.Duration(timeout) * time.Second
 	adaptiveTO := NewAdaptiveTimeout(to)
 	var count int64
-	collector := newResultCollector(stream)
+	collector := newResultCollector(stream, totalTasks)
 	failedCollector := &failedPortCollector{}
 	var wg sync.WaitGroup
 

core/portfinger/scanner_core.go

@@ -25,6 +25,23 @@ func (vs *VScan) Init() {
 	vs.parseProbesToMapKName()
 	vs.SetusedProbes()
 	vs.compileFallbacks() // 编译 fallback 数组
+	vs.preDecodeProbeData() // 预解码探针数据
+}
+
+// preDecodeProbeData 预解码所有探针的 Data 字段，避免运行时重复解码
+func (vs *VScan) preDecodeProbeData() {
+	for i := range vs.Probes {
+		if vs.Probes[i].Data != "" {
+			decoded, err := DecodeData(vs.Probes[i].Data)
+			if err == nil {
+				vs.Probes[i].DecodedData = decoded
+			}
+		}
+	}
+	// 同步到 map
+	for i := range vs.Probes {
+		vs.ProbesMapKName[vs.Probes[i].Name] = vs.Probes[i]
+	}
 }
 
 // compileFallbacks 编译所有探测器的 fallback 数组

core/portfinger/types.go

@@ -20,6 +20,7 @@ const MaxFallbacks = 20
 type Probe struct {
 	Name     string // 探测器名称
 	Data     string // 探测数据
+	DecodedData []byte // 预解码的探测数据
 	Protocol string // 协议
 	Ports    string // 端口范围
 	SSLPorts string // SSL端口范围

core/service_probe.go

@@ -219,9 +219,14 @@ func (s *SmartPortInfoScanner) tryProbeList(probes []*Probe, usedProbes map[stri
 		}
 		usedProbes[probe.Name] = struct{}{}
 
-		probeData, err := DecodeData(probe.Data)
-		if err != nil {
-			continue
+		// 优先使用预解码数据
+		probeData := probe.DecodedData
+		if probeData == nil {
+			var err error
+			probeData, err = DecodeData(probe.Data)
+			if err != nil {
+				continue
+			}
 		}
 
 		// 使用 TotalWaitMS 设置动态超时
@@ -282,8 +287,15 @@ func (s *SmartPortInfoScanner) performSSLSecondStage(serviceInfo *ServiceInfo) *
 			continue
 		}
 
-		probeData, err := DecodeData(probe.Data)
-		if err != nil || len(probeData) == 0 {
+		probeData := probe.DecodedData
+		if probeData == nil {
+			var decErr error
+			probeData, decErr = DecodeData(probe.Data)
+			if decErr != nil || len(probeData) == 0 {
+				continue
+			}
+		}
+		if len(probeData) == 0 {
 			continue
 		}
 		response := s.info.Connect(probeData)
@@ -317,8 +329,15 @@ func (s *SmartPortInfoScanner) tryHTTPSProbe() *ServiceInfo {
 		return nil
 	}
 
-	probeData, err := DecodeData(probe.Data)
-	if err != nil || len(probeData) == 0 {
+	probeData := probe.DecodedData
+	if probeData == nil {
+		var decErr error
+		probeData, decErr = DecodeData(probe.Data)
+		if decErr != nil || len(probeData) == 0 {
+			return nil
+		}
+	}
+	if len(probeData) == 0 {
 		return nil
 	}
 	response := s.info.Connect(probeData)

core/web_scanner.go

@@ -19,6 +19,25 @@ import (
 // Web服务检测
 // ===============================
 
+// 全局共享 HTTP Client，复用连接池减少 TLS 握手和 TCP 建连开销
+var (
+	sharedHTTPClientOnce sync.Once
+	sharedHTTPClient     *http.Client
+)
+
+func getSharedHTTPClient(config *common.Config) *http.Client {
+	sharedHTTPClientOnce.Do(func() {
+		sharedHTTPClient = createHTTPClient(config)
+		// 启用 keep-alive 复用连接
+		if t, ok := sharedHTTPClient.Transport.(*http.Transport); ok {
+			t.DisableKeepAlives = false
+			t.MaxIdleConns = 100
+			t.MaxIdleConnsPerHost = 2
+		}
+	})
+	return sharedHTTPClient
+}
+
 // WebPortDetector 简化的Web检测器 - 保持API兼容
 type WebPortDetector struct{}
 
@@ -59,15 +78,7 @@ func DetectHTTPScheme(host string, port int, config *common.Config, session *com
 	// TLS握手失败，记录原因
 
 	// 第二步：尝试HTTP请求（回退检测HTTP）
-	client := &http.Client{
-		Timeout: timeout,
-		Transport: &http.Transport{
-			DisableKeepAlives: true,
-		},
-		CheckRedirect: func(req *http.Request, via []*http.Request) error {
-			return http.ErrUseLastResponse // 不跟随重定向
-		},
-	}
+	client := getSharedHTTPClient(config)
 
 	// 使用HEAD请求（更轻量）
 	httpURL := fmt.Sprintf("http://%s", addr)
@@ -132,7 +143,7 @@ func (w *WebPortDetector) DetectHTTPServiceOnly(host string, port int, config *c
 		return false
 	}
 
-	client := createHTTPClient(config)
+	client := getSharedHTTPClient(config)
 
 	// 尝试HTTP
 	if w.tryHTTP(client, host, port, "http") {

plugins/services/activemq.go

@@ -50,7 +50,7 @@ func (p *ActiveMQPlugin) Scan(ctx context.Context, info *common.HostInfo, sessio
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, session)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, credentials, authFn, "activemq", testConfig)
 

plugins/services/cassandra.go

@@ -49,7 +49,7 @@ func (p *CassandraPlugin) Scan(ctx context.Context, info *common.HostInfo, sessi
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, config, state)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, credentials, authFn, "cassandra", testConfig)
 

plugins/services/credential_tester.go

@@ -5,6 +5,7 @@ import (
 	"database/sql"
 	"fmt"
 	"io"
+	"net"
 	"sync"
 	"time"
 
@@ -109,6 +110,7 @@ type ConcurrentTestConfig struct {
 	MaxRetries             int           // 最大重试次数，默认 3
 	RetryDelay             time.Duration // 重试延迟，默认 1s
 	MaxConsecutiveNetErrors int          // 连续网络错误阈值，超过则认为目标不可达，默认 5
+	TargetAddr             string        // 目标地址 host:port，用于 TCP 预检（可选）
 }
 
 // DefaultConcurrentTestConfig 默认配置
@@ -125,6 +127,13 @@ func DefaultConcurrentTestConfig(config *common.Config) ConcurrentTestConfig {
 	}
 }
 
+// DefaultConcurrentTestConfigWithTarget 带目标预检的默认配置
+func DefaultConcurrentTestConfigWithTarget(config *common.Config, info *common.HostInfo) ConcurrentTestConfig {
+	cfg := DefaultConcurrentTestConfig(config)
+	cfg.TargetAddr = fmt.Sprintf("%s:%d", info.Host, info.Port)
+	return cfg
+}
+
 // TestCredentialsConcurrently 并发测试多个凭据
 // 找到成功凭据后立即通知其他 worker 停止
 func TestCredentialsConcurrently(
@@ -142,6 +151,19 @@ func TestCredentialsConcurrently(
 		}
 	}
 
+	// TCP 预检：快速验证目标可达，避免对不可达目标浪费全部凭据尝试
+	if testConfig.TargetAddr != "" {
+		preConn, err := net.DialTimeout("tcp", testConfig.TargetAddr, 3*time.Second)
+		if err != nil {
+			return &ScanResult{
+				Success: false,
+				Service: serviceName,
+				Error:   fmt.Errorf("目标不可达: %w", err),
+			}
+		}
+		_ = preConn.Close()
+	}
+
 	// 调整并发数
 	concurrency := testConfig.Concurrency
 	if concurrency > len(credentials) {

plugins/services/ftp.go

@@ -49,7 +49,7 @@ func (p *FTPPlugin) Scan(ctx context.Context, info *common.HostInfo, session *co
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, config, state)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, credentials, authFn, "ftp", testConfig)
 

plugins/services/kafka.go

@@ -44,7 +44,7 @@ func (p *KafkaPlugin) Scan(ctx context.Context, info *common.HostInfo, session *
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, config, state)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, credentials, authFn, "kafka", testConfig)
 

plugins/services/ldap.go

@@ -50,7 +50,7 @@ func (p *LDAPPlugin) Scan(ctx context.Context, info *common.HostInfo, session *c
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, session)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, credentials, authFn, "ldap", testConfig)
 

plugins/services/mongodb.go

@@ -69,7 +69,7 @@ func (p *MongoDBPlugin) Scan(ctx context.Context, info *common.HostInfo, session
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, config, state)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, credentials, authFn, "mongodb", testConfig)
 

plugins/services/mssql.go

@@ -45,7 +45,7 @@ func (p *MSSQLPlugin) Scan(ctx context.Context, info *common.HostInfo, session *
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, config, state)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, credentials, authFn, "mssql", testConfig)
 

plugins/services/mysql.go

@@ -56,7 +56,7 @@ func (p *MySQLPlugin) Scan(ctx context.Context, info *common.HostInfo, session *
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, config, state)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, credentials, authFn, "mysql", testConfig)
 

plugins/services/neo4j.go

@@ -51,7 +51,7 @@ func (p *Neo4jPlugin) Scan(ctx context.Context, info *common.HostInfo, session *
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, config, state)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, credentials, authFn, "neo4j", testConfig)
 

plugins/services/oracle.go

@@ -50,7 +50,7 @@ func (p *OraclePlugin) Scan(ctx context.Context, info *common.HostInfo, session
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, config, state)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, credentials, authFn, "oracle", testConfig)
 

plugins/services/postgresql.go

@@ -51,7 +51,7 @@ func (p *PostgreSQLPlugin) Scan(ctx context.Context, info *common.HostInfo, sess
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, config, state)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, credentials, authFn, "postgresql", testConfig)
 

plugins/services/rabbitmq.go

@@ -52,7 +52,7 @@ func (p *RabbitMQPlugin) Scan(ctx context.Context, info *common.HostInfo, sessio
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, config, state)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, credentials, authFn, "rabbitmq", testConfig)
 

plugins/services/redis.go

@@ -56,7 +56,7 @@ func (p *RedisPlugin) Scan(ctx context.Context, info *common.HostInfo, session *
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, session)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 	testConfig.Concurrency = 20 // Redis 默认并发度更高
 
 	result := TestCredentialsConcurrently(ctx, credentials, authFn, "redis", testConfig)

plugins/services/rsync.go

@@ -70,7 +70,7 @@ func (p *RsyncPlugin) Scan(ctx context.Context, info *common.HostInfo, session *
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, session)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, creds, authFn, "rsync", testConfig)
 

plugins/services/smb.go

@@ -91,7 +91,7 @@ func (p *SmbPlugin) Scan(ctx context.Context, info *common.HostInfo, session *co
 	}
 
 	authFn := p.createAuthFunc(info, auth, session)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, creds, authFn, "smb", testConfig)
 

plugins/services/smtp.go

@@ -57,7 +57,7 @@ func (p *SMTPPlugin) Scan(ctx context.Context, info *common.HostInfo, session *c
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, session)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, creds, authFn, "smtp", testConfig)
 

plugins/services/ssh.go

@@ -65,7 +65,7 @@ func (p *SSHPlugin) Scan(ctx context.Context, info *common.HostInfo, session *co
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, session)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, credentials, authFn, "ssh", testConfig)
 

plugins/services/telnet.go

@@ -92,7 +92,7 @@ func (p *TelnetPlugin) Scan(ctx context.Context, info *common.HostInfo, session
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, session)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, creds, authFn, "telnet", testConfig)
 

plugins/services/vnc.go

@@ -49,7 +49,7 @@ func (p *VNCPlugin) Scan(ctx context.Context, info *common.HostInfo, session *co
 
 	// 使用公共框架进行并发凭据测试
 	authFn := p.createAuthFunc(info, session)
-	testConfig := DefaultConcurrentTestConfig(config)
+	testConfig := DefaultConcurrentTestConfigWithTarget(config, info)
 
 	result := TestCredentialsConcurrently(ctx, credentials, authFn, "vnc", testConfig)