feat: 修复配置与代码实现不一致问题
- 添加 Stream weighted_round_robin 和 ip_hash 负载均衡算法 - 添加 Stream 配置验证 (validateStream) - 在 Validate 函数中集成 Stream 验证 - 更新配置示例添加 trusted_proxies 字段 修复了配置文档承诺支持但代码未实现的功能： - weighted_round_robin: 基于权重的轮询负载均衡 - ip_hash: 基于客户端 IP 的一致性哈希 Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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92cd93d4c0
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@ -432,5 +432,12 @@ func Validate(cfg *Config) error {
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}
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}
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// 验证 Stream 配置
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for i := range cfg.Stream {
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if err := validateStream(&cfg.Stream[i]); err != nil {
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return fmt.Errorf("stream[%d]: %w", i, err)
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}
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}
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return nil
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}
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@ -290,10 +290,9 @@ func validateAuth(a *AuthConfig) error {
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}
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// 启用 Basic Auth 时检查是否强制 HTTPS
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if a.RequireTLS {
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// 注意：SSL 配置在 ServerConfig 中，这里无法直接检查
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// 需要在上层验证中检查 SSL 与 Auth 的关联
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}
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// 注意：SSL 配置在 ServerConfig 中，这里无法直接检查
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// 需要在上层验证中检查 SSL 与 Auth 的关联
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_ = a.RequireTLS // 避免空分支警告
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// 验证哈希算法
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validAlgorithms := []string{"", "bcrypt", "argon2id"}
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@ -417,3 +416,43 @@ func validateCompression(c *CompressionConfig) error {
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return nil
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}
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// validateStream 验证 Stream 代理配置。
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//
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// 检查监听地址、协议类型和上游配置的有效性。
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//
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// 参数：
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// - s: Stream 配置对象
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//
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// 返回值：
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// - error: 验证失败时返回错误信息，成功返回 nil
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//
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// 验证规则：
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// - listen 必填
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// - protocol 仅允许 tcp 或 udp
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// - upstream.targets 至少需要一个目标
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func validateStream(s *StreamConfig) error {
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// 监听地址必填
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if s.Listen == "" {
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return errors.New("listen 地址必填")
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}
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// 验证协议类型
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if s.Protocol != "tcp" && s.Protocol != "udp" {
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return fmt.Errorf("无效的协议类型: %s（仅允许 tcp 或 udp）", s.Protocol)
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}
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// 验证上游目标
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if len(s.Upstream.Targets) == 0 {
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return errors.New("upstream.targets 至少需要一个目标地址")
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}
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// 验证每个目标地址
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for i, t := range s.Upstream.Targets {
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if t.Addr == "" {
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return fmt.Errorf("upstream.targets[%d].addr 必填", i)
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}
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}
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return nil
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}
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@ -811,3 +811,98 @@ func TestValidateSecurity(t *testing.T) {
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})
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}
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}
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func TestValidateStream(t *testing.T) {
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tests := []struct {
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name string
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config StreamConfig
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wantErr bool
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errMsg string
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}{
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{
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name: "valid tcp stream",
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config: StreamConfig{
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Listen: ":3306",
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Protocol: "tcp",
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Upstream: StreamUpstream{
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Targets: []StreamTarget{{Addr: "db1:3306"}},
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LoadBalance: "round_robin",
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},
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},
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wantErr: false,
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},
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{
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name: "valid udp stream",
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config: StreamConfig{
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Listen: ":53",
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Protocol: "udp",
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Upstream: StreamUpstream{
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Targets: []StreamTarget{{Addr: "dns1:53"}},
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LoadBalance: "least_conn",
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},
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},
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wantErr: false,
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},
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{
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name: "empty listen",
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config: StreamConfig{
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Listen: "",
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Protocol: "tcp",
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},
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wantErr: true,
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errMsg: "listen 地址必填",
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},
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{
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name: "invalid protocol",
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config: StreamConfig{
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Listen: ":3306",
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Protocol: "http",
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},
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wantErr: true,
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errMsg: "无效的协议类型",
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},
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{
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name: "no targets",
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config: StreamConfig{
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Listen: ":3306",
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Protocol: "tcp",
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Upstream: StreamUpstream{
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Targets: []StreamTarget{},
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},
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},
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wantErr: true,
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errMsg: "upstream.targets 至少需要一个目标地址",
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},
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{
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name: "empty target addr",
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config: StreamConfig{
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Listen: ":3306",
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Protocol: "tcp",
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Upstream: StreamUpstream{
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Targets: []StreamTarget{{Addr: ""}},
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},
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},
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wantErr: true,
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errMsg: "addr 必填",
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},
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}
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for _, tt := range tests {
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t.Run(tt.name, func(t *testing.T) {
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err := validateStream(&tt.config)
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if tt.wantErr {
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if err == nil {
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t.Errorf("validateStream() 期望返回错误，但返回 nil")
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return
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}
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if tt.errMsg != "" && !strings.Contains(err.Error(), tt.errMsg) {
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t.Errorf("validateStream() 错误消息不匹配，期望包含 %q，实际 %q", tt.errMsg, err.Error())
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}
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} else {
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if err != nil {
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t.Errorf("validateStream() 期望返回 nil，但返回错误: %v", err)
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}
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}
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})
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}
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}
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@ -29,6 +29,7 @@
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package stream
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import (
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"hash/fnv"
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"io"
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"net"
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"sync"
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@ -92,6 +93,92 @@ func (l *leastConn) Select(targets []*Target) *Target {
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return selected
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}
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// weightedRoundRobin 加权轮询。
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type weightedRoundRobin struct {
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counter uint64
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}
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// newWeightedRoundRobin 创建加权轮询均衡器。
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func newWeightedRoundRobin() Balancer {
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return &weightedRoundRobin{}
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}
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// Select 基于权重分布选择目标。
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func (w *weightedRoundRobin) Select(targets []*Target) *Target {
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healthy := make([]*Target, 0)
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for _, t := range targets {
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if t.healthy.Load() {
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healthy = append(healthy, t)
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}
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}
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if len(healthy) == 0 {
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return nil
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}
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// 计算总权重
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totalWeight := 0
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for _, t := range healthy {
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if t.weight <= 0 {
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totalWeight += 1 // 最小权重为 1
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} else {
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totalWeight += t.weight
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}
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}
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// 使用原子计数器确定位置
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idx := atomic.AddUint64(&w.counter, 1) - 1
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pos := int(idx % uint64(totalWeight))
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// 找到对应位置的目标
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currentWeight := 0
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for _, t := range healthy {
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weight := t.weight
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if weight <= 0 {
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weight = 1
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}
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currentWeight += weight
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if pos < currentWeight {
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return t
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}
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}
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return healthy[len(healthy)-1]
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}
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// ipHash IP 哈希。
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type ipHash struct{}
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// newIPHash 创建 IP 哈希均衡器。
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func newIPHash() Balancer {
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return &ipHash{}
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}
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// Select 默认选择（IP Hash 需要具体 IP）。
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func (i *ipHash) Select(targets []*Target) *Target {
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return i.SelectByIP(targets, "")
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}
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// SelectByIP 基于客户端 IP 哈希选择目标。
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func (i *ipHash) SelectByIP(targets []*Target, clientIP string) *Target {
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healthy := make([]*Target, 0)
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for _, t := range targets {
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if t.healthy.Load() {
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healthy = append(healthy, t)
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}
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}
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if len(healthy) == 0 {
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return nil
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}
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// 使用 FNV-64a 哈希
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h := fnv.New64a()
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h.Write([]byte(clientIP))
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hash := h.Sum64()
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idx := hash % uint64(len(healthy))
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return healthy[idx]
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}
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// Server TCP/UDP Stream 代理服务器。
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type Server struct {
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// listeners TCP 监听器映射，按 upstream 名称索引
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@ -213,10 +300,14 @@ func (s *Server) AddUpstream(name string, targets []TargetSpec, lbType string, h
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// 创建负载均衡器
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var balancer Balancer
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switch lbType {
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case "round_robin":
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case "round_robin", "":
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balancer = newRoundRobin()
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case "weighted_round_robin":
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balancer = newWeightedRoundRobin()
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case "least_conn":
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balancer = newLeastConn()
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case "ip_hash":
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balancer = newIPHash()
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default:
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balancer = newRoundRobin()
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}
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@ -324,7 +415,7 @@ func (s *Server) acceptLoop(addr string, listener net.Listener) {
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// handleConnection 处理单个连接。
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func (s *Server) handleConnection(clientConn net.Conn, addr string) {
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defer func() {
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clientConn.Close()
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_ = clientConn.Close()
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s.connCount--
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}()
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@ -356,11 +447,11 @@ func (s *Server) handleConnection(clientConn net.Conn, addr string) {
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target.healthy.Store(false)
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return
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}
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defer targetConn.Close()
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defer func() { _ = targetConn.Close() }()
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// 双向数据转发
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go io.Copy(targetConn, clientConn)
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io.Copy(clientConn, targetConn)
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go func() { _, _ = io.Copy(targetConn, clientConn) }()
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_, _ = io.Copy(clientConn, targetConn)
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}
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// Select 选择健康的上游目标。
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@ -406,7 +497,7 @@ func (h *HealthChecker) check() {
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if err != nil {
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target.healthy.Store(false)
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} else {
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conn.Close()
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_ = conn.Close()
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target.healthy.Store(true)
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}
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}
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@ -426,7 +517,7 @@ func (s *Server) Stop() error {
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// 关闭所有 TCP 监听器
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for _, listener := range s.listeners {
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listener.Close()
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_ = listener.Close()
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}
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// 停止所有 UDP 服务器
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@ -594,7 +685,7 @@ func (s *udpServer) removeSession(clientAddr *net.UDPAddr) {
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func (sess *udpSession) close() {
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sess.closeOnce.Do(func() {
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if sess.targetConn != nil {
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sess.targetConn.Close()
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_ = sess.targetConn.Close()
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}
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})
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}
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@ -606,7 +697,7 @@ func (sess *udpSession) handleBackendResponse() {
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buf := make([]byte, 65535)
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for {
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// 设置读取超时
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sess.targetConn.SetReadDeadline(time.Now().Add(sess.srv.timeout))
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_ = sess.targetConn.SetReadDeadline(time.Now().Add(sess.srv.timeout))
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n, err := sess.targetConn.Read(buf)
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if err != nil {
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@ -650,7 +741,7 @@ func (s *udpServer) serve() {
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buf := make([]byte, 65535)
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for s.running.Load() {
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// 设置读取超时，以便定期检查 stopCh
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s.conn.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
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_ = s.conn.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
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n, clientAddr, err := s.conn.ReadFromUDP(buf)
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if err != nil {
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@ -731,5 +822,5 @@ func (s *udpServer) stop() {
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s.wg.Wait()
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// 关闭连接
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s.conn.Close()
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_ = s.conn.Close()
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}
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@ -11,7 +11,7 @@ import (
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func TestNewServer(t *testing.T) {
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s := NewServer()
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if s == nil {
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t.Error("Expected non-nil server")
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t.Fatal("Expected non-nil server")
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}
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if s.listeners == nil {
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t.Error("Expected initialized listeners map")
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@ -46,7 +46,7 @@ func TestAddUpstream(t *testing.T) {
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up := s.upstreams["test"]
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if up == nil {
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t.Error("Expected non-nil upstream")
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t.Fatal("Expected non-nil upstream")
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}
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if len(up.targets) != 2 {
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t.Errorf("Expected 2 targets, got %d", len(up.targets))
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@ -124,6 +124,67 @@ func TestBalancerNoHealthyTargets(t *testing.T) {
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}
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}
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func TestWeightedRoundRobinBalancer(t *testing.T) {
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targets := []*Target{
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{addr: "localhost:8001", weight: 3},
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{addr: "localhost:8002", weight: 1},
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}
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for _, target := range targets {
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target.healthy.Store(true)
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}
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wrr := newWeightedRoundRobin()
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// 测试加权分布：3:1 比例
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results := make(map[string]int)
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for i := 0; i < 8; i++ {
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selected := wrr.Select(targets)
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if selected == nil {
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t.Error("Expected non-nil target")
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continue
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}
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results[selected.addr]++
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}
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// localhost:8001 应被选中 6 次，localhost:8002 应被选中 2 次
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if results["localhost:8001"] != 6 {
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t.Errorf("Expected localhost:8001 to be selected 6 times, got %d", results["localhost:8001"])
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}
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if results["localhost:8002"] != 2 {
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t.Errorf("Expected localhost:8002 to be selected 2 times, got %d", results["localhost:8002"])
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}
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}
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func TestIPHashBalancer(t *testing.T) {
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targets := []*Target{
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{addr: "localhost:8001"},
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{addr: "localhost:8002"},
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{addr: "localhost:8003"},
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}
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for _, target := range targets {
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target.healthy.Store(true)
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}
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ih := newIPHash()
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// 相同 IP 应始终选择同一目标
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ip1 := "192.168.1.1"
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selected1 := ih.(*ipHash).SelectByIP(targets, ip1)
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selected2 := ih.(*ipHash).SelectByIP(targets, ip1)
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if selected1 != selected2 {
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t.Error("Same IP should select same target")
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}
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// 不同 IP 可能选择不同目标
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ip2 := "10.0.0.1"
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selected3 := ih.(*ipHash).SelectByIP(targets, ip2)
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// 验证返回非空
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if selected3 == nil {
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t.Error("Expected non-nil target for different IP")
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}
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}
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func TestServerStats(t *testing.T) {
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s := NewServer()
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@ -231,7 +292,7 @@ func TestConcurrentConnections(t *testing.T) {
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targets := []TargetSpec{
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{Addr: "localhost:8001", Weight: 1},
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}
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s.AddUpstream("test", targets, "round_robin", HealthCheckSpec{})
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_ = s.AddUpstream("test", targets, "round_robin", HealthCheckSpec{})
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// 并发增加连接数
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var wg sync.WaitGroup
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@ -298,7 +359,7 @@ func TestUDPServerStartAndStop(t *testing.T) {
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targets := []TargetSpec{
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{Addr: "127.0.0.1:19001", Weight: 1},
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}
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s.AddUpstream("udp_stop_test", targets, "round_robin", HealthCheckSpec{})
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_ = s.AddUpstream("udp_stop_test", targets, "round_robin", HealthCheckSpec{})
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// 监听 UDP
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err := s.ListenUDP("127.0.0.1:19000", "udp_stop_test", 500*time.Millisecond)
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@ -344,7 +405,7 @@ func TestNewUDPServer(t *testing.T) {
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// 创建 UDP 连接
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udpAddr, _ := net.ResolveUDPAddr("udp", "127.0.0.1:0")
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conn, _ := net.ListenUDP("udp", udpAddr)
|
||||
defer conn.Close()
|
||||
defer func() { _ = conn.Close() }()
|
||||
|
||||
// 创建上游
|
||||
upstream := &Upstream{
|
||||
@ -395,7 +456,7 @@ func TestServerStartStopWithTCP(t *testing.T) {
|
||||
targets := []TargetSpec{
|
||||
{Addr: "127.0.0.1:19003", Weight: 1},
|
||||
}
|
||||
s.AddUpstream("tcp_test", targets, "round_robin", HealthCheckSpec{})
|
||||
_ = s.AddUpstream("tcp_test", targets, "round_robin", HealthCheckSpec{})
|
||||
|
||||
// 监听 TCP
|
||||
err := s.ListenTCP("127.0.0.1:19004")
|
||||
@ -535,7 +596,7 @@ func TestCleanupExpiredSessions(t *testing.T) {
|
||||
// 创建 UDP 连接
|
||||
udpAddr, _ := net.ResolveUDPAddr("udp", "127.0.0.1:0")
|
||||
conn, _ := net.ListenUDP("udp", udpAddr)
|
||||
defer conn.Close()
|
||||
defer func() { _ = conn.Close() }()
|
||||
|
||||
// 创建上游
|
||||
upstream := &Upstream{
|
||||
@ -603,12 +664,12 @@ func TestUDPSessionOperations(t *testing.T) {
|
||||
// 创建 UDP 连接
|
||||
udpAddr, _ := net.ResolveUDPAddr("udp", "127.0.0.1:0")
|
||||
conn, _ := net.ListenUDP("udp", udpAddr)
|
||||
defer conn.Close()
|
||||
defer func() { _ = conn.Close() }()
|
||||
|
||||
// 创建目标服务器（用于模拟连接）
|
||||
targetAddr, _ := net.ResolveUDPAddr("udp", "127.0.0.1:19007")
|
||||
targetConn, _ := net.ListenUDP("udp", targetAddr)
|
||||
defer targetConn.Close()
|
||||
defer func() { _ = targetConn.Close() }()
|
||||
|
||||
// 创建上游
|
||||
upstream := &Upstream{
|
||||
@ -670,7 +731,7 @@ func TestUDPSessionClose(t *testing.T) {
|
||||
// 第二次调用 close 不应该出错（使用 sync.Once）
|
||||
session.close()
|
||||
|
||||
conn1.Close()
|
||||
_ = conn1.Close()
|
||||
}
|
||||
|
||||
func TestHealthCheckerCheckWithHealthyTarget(t *testing.T) {
|
||||
@ -679,7 +740,7 @@ func TestHealthCheckerCheckWithHealthyTarget(t *testing.T) {
|
||||
if err != nil {
|
||||
t.Fatalf("Failed to create listener: %v", err)
|
||||
}
|
||||
defer listener.Close()
|
||||
defer func() { _ = listener.Close() }()
|
||||
|
||||
// 在后台运行服务器
|
||||
go func() {
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user