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lolly/internal/config/defaults.go
xfy ec916d882d feat(proxy,middleware,config): 集成配置与代码差异修复 
- 集成一致性哈希负载均衡到 proxy.go，支持 hash_key 和 virtual_nodes 配置
- 集成滑动窗口限流算法到 ratelimit.go，支持 algorithm 选择
- 应用 Transport 连接池配置到 createHostClient
- 集成 HSTS 配置到安全头部中间件
- 补充 config.example.yaml 缺失配置（http3、gzip_static、sliding_window）

Co-Authored-By: Claude <noreply@anthropic.com>
2026-04-03 16:08:45 +08:00

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// Package config 提供 YAML 配置文件的解析、验证和默认配置生成功能。
//
// 该文件包含默认配置生成功能，包括：
// - DefaultConfig 函数：返回带合理默认值的配置结构体
// - GenerateConfigYAML 函数：生成带注释的示例配置文件
//
// 主要用途：
//
// 用于生成默认配置和示例配置文件，便于用户快速上手。
//
// 注意事项：
// - 默认值经过优化，适合大多数常见场景
// - 生成的 YAML 包含详细注释说明
//
// 作者：xfy
package config
import (
"bytes"
"fmt"
"time"
)
// DefaultConfig 返回带默认值的配置结构体。
//
// 返回一个预填充了合理默认值的配置对象，包含服务器、
// SSL、安全、压缩、日志、性能和监控等各模块的默认设置。
//
// 返回值：
// - *Config: 带默认值的配置对象
//
// 默认值说明：
// - 监听地址: :8080
// - 超时: 读取/写入 30s，空闲 120s
// - TLS: 仅支持 TLSv1.2 和 TLSv1.3
// - 安全头部: X-Frame-Options=DENY, X-Content-Type-Options=nosniff
// - 压缩: gzip，级别 6，最小 1024 字节
func DefaultConfig() *Config {
return &Config{
Server: ServerConfig{
Listen: ":8080",
Name: "localhost",
ReadTimeout: 30 * time.Second,
WriteTimeout: 30 * time.Second,
IdleTimeout: 120 * time.Second,
MaxConnsPerIP: 1000,
MaxRequestsPerConn: 10000,
Static: StaticConfig{
Root: "/var/www/html",
Index: []string{"index.html", "index.htm"},
},
SSL: SSLConfig{
Protocols: []string{"TLSv1.2", "TLSv1.3"},
OCSPStapling: false,
HSTS: HSTSConfig{
MaxAge: 31536000,
IncludeSubDomains: true,
Preload: false,
},
},
Security: SecurityConfig{
Access: AccessConfig{
Allow: []string{},
Deny: []string{},
Default: "allow",
},
RateLimit: RateLimitConfig{
RequestRate: 0,
Burst: 0,
ConnLimit: 0,
Key: "ip",
Algorithm: "token_bucket",
SlidingWindowMode: "approximate",
SlidingWindow: 60,
},
Auth: AuthConfig{
RequireTLS: true,
Algorithm: "bcrypt",
Realm: "Restricted Area",
MinPasswordLength: 8,
},
Headers: SecurityHeaders{
XFrameOptions: "DENY",
XContentTypeOptions: "nosniff",
ReferrerPolicy: "strict-origin-when-cross-origin",
},
},
Compression: CompressionConfig{
Type: "gzip",
Level: 6,
MinSize: 1024,
GzipStatic: false,
GzipStaticExtensions: []string{".gz", ".br"},
Types: []string{
"text/html",
"text/css",
"text/javascript",
"application/json",
"application/javascript",
},
},
},
Logging: LoggingConfig{
Format: "text",
Access: AccessLogConfig{
// 近似 nginx combined 格式
// nginx: $remote_addr - $remote_user [$time_local] "$request" $status $body_bytes_sent "$http_referer" "$http_user_agent"
// lolly: $request 不含 HTTP 版本，$time 为 RFC3339 格式
Format: "$remote_addr - $remote_user [$time] \"$request\" $status $body_bytes_sent \"$http_referer\" \"$http_user_agent\"",
},
Error: ErrorLogConfig{
Level: "info",
},
},
Performance: PerformanceConfig{
GoroutinePool: GoroutinePoolConfig{
Enabled: false,
MaxWorkers: 1000,
MinWorkers: 10,
IdleTimeout: 60 * time.Second,
},
FileCache: FileCacheConfig{
MaxEntries: 10000,
MaxSize: 256 * 1024 * 1024, // 256MB
Inactive: 20 * time.Second,
LRUEviction: true,
},
Transport: TransportConfig{
MaxIdleConns: 100,
MaxIdleConnsPerHost: 32,
IdleConnTimeout: 90 * time.Second,
MaxConnsPerHost: 0, // 0 表示不限制
},
},
Monitoring: MonitoringConfig{
Status: StatusConfig{
Path: "/_status",
Allow: []string{"127.0.0.1"},
},
},
HTTP3: HTTP3Config{
Enabled: false,
Listen: ":443",
MaxStreams: 100,
IdleTimeout: 60 * time.Second,
Enable0RTT: false,
},
}
}
// GenerateConfigYAML 生成带注释的默认配置 YAML。
//
// 根据配置对象生成带详细注释的 YAML 配置文件内容，
// 包含各配置项的说明和有效值提示。
//
// 参数：
// - cfg: 配置对象，用于填充 YAML 中的默认值
//
// 返回值：
// - []byte: 生成的 YAML 内容（包含注释）
// - error: 当前实现始终返回 nil
//
// 注意事项：
// - 生成的 YAML 包含中文注释，便于理解各配置项用途
// - 注释中包含有效值范围和默认值说明
func GenerateConfigYAML(cfg *Config) ([]byte, error) {
// 手动构建带注释的 YAML
var buf bytes.Buffer
buf.WriteString("# Lolly 配置文件\n")
// buf.WriteString("# 文档: https://github.com/xfy/lolly\n")
buf.WriteString("\n")
// server 配置
buf.WriteString("# 服务器配置（单服务器模式）\n")
buf.WriteString("server:\n")
buf.WriteString(fmt.Sprintf(" listen: \"%s\" # 监听地址\n", cfg.Server.Listen))
buf.WriteString(fmt.Sprintf(" name: \"%s\" # 服务器名称（虚拟主机匹配）\n", cfg.Server.Name))
buf.WriteString(fmt.Sprintf(" read_timeout: %ds # 读取超时（0 表示不限制）\n", int(cfg.Server.ReadTimeout.Seconds())))
buf.WriteString(fmt.Sprintf(" write_timeout: %ds # 写入超时（0 表示不限制）\n", int(cfg.Server.WriteTimeout.Seconds())))
buf.WriteString(fmt.Sprintf(" idle_timeout: %ds # 空闲超时（0 表示不限制）\n", int(cfg.Server.IdleTimeout.Seconds())))
buf.WriteString(fmt.Sprintf(" max_conns_per_ip: %d # 每 IP 最大连接数（0 表示不限制）\n", cfg.Server.MaxConnsPerIP))
buf.WriteString(fmt.Sprintf(" max_requests_per_conn: %d # 每连接最大请求数（0 表示不限制）\n", cfg.Server.MaxRequestsPerConn))
buf.WriteString("\n")
// static 配置
buf.WriteString(" # 静态文件服务配置\n")
buf.WriteString(" static:\n")
buf.WriteString(fmt.Sprintf(" root: \"%s\" # 静态文件根目录\n", cfg.Server.Static.Root))
buf.WriteString(" index: # 索引文件\n")
for _, idx := range cfg.Server.Static.Index {
buf.WriteString(fmt.Sprintf(" - \"%s\"\n", idx))
}
buf.WriteString("\n")
// proxy 配置示例
buf.WriteString(" # 反向代理配置\n")
buf.WriteString(" # proxy:\n")
buf.WriteString(" # - path: /api # 匹配路径前缀\n")
buf.WriteString(" # targets: # 后端目标列表\n")
buf.WriteString(" # - url: http://backend1:8080\n")
buf.WriteString(" # weight: 3 # 权重（加权轮询时有效）\n")
buf.WriteString(" # - url: http://backend2:8080\n")
buf.WriteString(" # weight: 1\n")
buf.WriteString(" # load_balance: round_robin # 负载均衡算法（有效值: round_robin, weighted_round_robin, least_conn, ip_hash, consistent_hash）\n")
buf.WriteString(" # hash_key: ip # 一致性哈希键（仅 load_balance=consistent_hash 时有效，有效值: ip, uri, header:X-Name）\n")
buf.WriteString(" # virtual_nodes: 150 # 一致性哈希虚拟节点数（仅 load_balance=consistent_hash 时有效）\n")
buf.WriteString(" # health_check: # 健康检查\n")
buf.WriteString(" # interval: 10s\n")
buf.WriteString(" # path: /health\n")
buf.WriteString(" # timeout: 5s\n")
buf.WriteString(" # timeout: # 超时配置\n")
buf.WriteString(" # connect: 5s # 连接超时\n")
buf.WriteString(" # read: 30s # 读取超时\n")
buf.WriteString(" # write: 30s # 写入超时\n")
buf.WriteString(" # headers: # 头部修改\n")
buf.WriteString(" # set_request: {X-Custom: value}\n")
buf.WriteString(" # set_response: {X-Server: lolly}\n")
buf.WriteString(" # remove: [X-Powered-By]\n")
buf.WriteString(" # cache: # 代理缓存\n")
buf.WriteString(" # enabled: false\n")
buf.WriteString(" # max_age: 60s\n")
buf.WriteString(" # cache_lock: true # 防止缓存击穿\n")
buf.WriteString(" # stale_while_revalidate: 30s\n")
buf.WriteString("\n")
// SSL 配置
buf.WriteString(" # SSL/TLS 配置\n")
buf.WriteString(" # ssl:\n")
buf.WriteString(" # cert: /path/to/cert.pem # 证书文件\n")
buf.WriteString(" # key: /path/to/key.pem # 私钥文件\n")
buf.WriteString(" # cert_chain: /path/to/chain.pem # 证书链文件\n")
buf.WriteString(" # protocols: # TLS 版本（有效值: TLSv1.2, TLSv1.3）\n")
for _, proto := range cfg.Server.SSL.Protocols {
buf.WriteString(fmt.Sprintf(" # - \"%s\"\n", proto))
}
buf.WriteString(" # ciphers: [] # 加密套件（仅 TLS 1.2 有效）\n")
buf.WriteString(fmt.Sprintf(" # ocsp_stapling: %v # OCSP Stapling\n", cfg.Server.SSL.OCSPStapling))
buf.WriteString(" # hsts: # HTTP Strict Transport Security\n")
buf.WriteString(fmt.Sprintf(" # max_age: %d # 过期时间（秒）\n", cfg.Server.SSL.HSTS.MaxAge))
buf.WriteString(fmt.Sprintf(" # include_sub_domains: %v # 包含子域名\n", cfg.Server.SSL.HSTS.IncludeSubDomains))
buf.WriteString(fmt.Sprintf(" # preload: %v # 加入 HSTS 预加载列表\n", cfg.Server.SSL.HSTS.Preload))
buf.WriteString("\n")
// security 配置
buf.WriteString(" # 安全配置\n")
buf.WriteString(" security:\n")
buf.WriteString(" # IP 访问控制\n")
buf.WriteString(" access:\n")
buf.WriteString(" allow: [] # 允许的 IP/CIDR 列表\n")
buf.WriteString(" deny: [] # 拒绝的 IP/CIDR 列表\n")
buf.WriteString(fmt.Sprintf(" default: \"%s\" # 默认动作（有效值: allow, deny）\n", cfg.Server.Security.Access.Default))
buf.WriteString("\n")
buf.WriteString(" # 速率限制\n")
buf.WriteString(" rate_limit:\n")
buf.WriteString(fmt.Sprintf(" request_rate: %d # 每秒请求数（0 表示不限制）\n", cfg.Server.Security.RateLimit.RequestRate))
buf.WriteString(fmt.Sprintf(" burst: %d # 突发上限\n", cfg.Server.Security.RateLimit.Burst))
buf.WriteString(fmt.Sprintf(" conn_limit: %d # 连接数限制\n", cfg.Server.Security.RateLimit.ConnLimit))
buf.WriteString(fmt.Sprintf(" key: \"%s\" # 限流 key 来源（有效值: ip, header）\n", cfg.Server.Security.RateLimit.Key))
buf.WriteString(fmt.Sprintf(" algorithm: \"%s\" # 限流算法（有效值: token_bucket, sliding_window）\n", cfg.Server.Security.RateLimit.Algorithm))
buf.WriteString(fmt.Sprintf(" sliding_window_mode: \"%s\" # 滑动窗口模式（有效值: approximate, precise，仅 algorithm=sliding_window 时有效）\n", cfg.Server.Security.RateLimit.SlidingWindowMode))
buf.WriteString(fmt.Sprintf(" sliding_window: %d # 滑动窗口大小（秒，仅 algorithm=sliding_window 时有效）\n", cfg.Server.Security.RateLimit.SlidingWindow))
buf.WriteString("\n")
buf.WriteString(" # 认证配置（type 为空时禁用）\n")
buf.WriteString(" auth:\n")
buf.WriteString(" type: \"\" # 认证类型（有效值: basic，空表示禁用）\n")
buf.WriteString(fmt.Sprintf(" require_tls: %v # 启用时强制 HTTPS\n", cfg.Server.Security.Auth.RequireTLS))
buf.WriteString(fmt.Sprintf(" algorithm: \"%s\" # 密码哈希算法（有效值: bcrypt, argon2id）\n", cfg.Server.Security.Auth.Algorithm))
buf.WriteString(" users: [] # 用户列表\n")
buf.WriteString(fmt.Sprintf(" realm: \"%s\" # 认证域\n", cfg.Server.Security.Auth.Realm))
buf.WriteString(fmt.Sprintf(" min_password_length: %d # 密码最小长度\n", cfg.Server.Security.Auth.MinPasswordLength))
buf.WriteString("\n")
buf.WriteString(" # 安全头部\n")
buf.WriteString(" headers:\n")
buf.WriteString(fmt.Sprintf(" x_frame_options: \"%s\" # 防止点击劫持（有效值: DENY, SAMEORIGIN, 空表示禁用）\n", cfg.Server.Security.Headers.XFrameOptions))
buf.WriteString(fmt.Sprintf(" x_content_type_options: \"%s\" # 防止 MIME 嗅探\n", cfg.Server.Security.Headers.XContentTypeOptions))
buf.WriteString(fmt.Sprintf(" referrer_policy: \"%s\" # 引用策略（有效值: no-referrer, no-referrer-when-downgrade, origin, origin-when-cross-origin, same-origin, strict-origin, strict-origin-when-cross-origin, unsafe-url）\n", cfg.Server.Security.Headers.ReferrerPolicy))
buf.WriteString(" # content_security_policy: \"default-src 'self'\" # 内容安全策略 CSP\n")
buf.WriteString(" # permissions_policy: \"geolocation=(), microphone=()\" # 权限策略\n")
buf.WriteString("\n")
// rewrite 配置示例
buf.WriteString(" # URL 重写规则\n")
buf.WriteString(" # rewrite:\n")
buf.WriteString(" # - pattern: \"^/old/(.*)$\" # 匹配模式（正则表达式）\n")
buf.WriteString(" # replacement: /new/$1 # 替换目标\n")
buf.WriteString(" # flag: last # 标志（有效值: last, redirect, permanent, break）\n")
buf.WriteString("\n")
// compression 配置
buf.WriteString(" # 响应压缩配置\n")
buf.WriteString(" compression:\n")
buf.WriteString(fmt.Sprintf(" type: \"%s\" # 压缩类型（有效值: gzip, brotli, both，空表示禁用）\n", cfg.Server.Compression.Type))
buf.WriteString(fmt.Sprintf(" level: %d # 压缩级别（范围 1-9，值越大压缩率越高但速度越慢）\n", cfg.Server.Compression.Level))
buf.WriteString(fmt.Sprintf(" min_size: %d # 最小压缩大小（字节，小于此值不压缩）\n", cfg.Server.Compression.MinSize))
buf.WriteString(fmt.Sprintf(" gzip_static: %v # 启用预压缩文件支持（自动查找 .gz/.br 文件）\n", cfg.Server.Compression.GzipStatic))
buf.WriteString(" gzip_static_extensions: # 预压缩文件扩展名\n")
for _, ext := range cfg.Server.Compression.GzipStaticExtensions {
buf.WriteString(fmt.Sprintf(" - \"%s\"\n", ext))
}
buf.WriteString(" types: # 可压缩的 MIME 类型\n")
for _, t := range cfg.Server.Compression.Types {
buf.WriteString(fmt.Sprintf(" - \"%s\"\n", t))
}
buf.WriteString("\n")
// servers 配置说明 - 完整示例
buf.WriteString("# 多虚拟主机模式（可选，每个虚拟主机支持完整的 server 配置）\n")
buf.WriteString("# servers:\n")
buf.WriteString("# - listen: \":8080\" # 监听地址\n")
buf.WriteString("# name: \"api.example.com\" # 服务器名称（用于虚拟主机匹配）\n")
buf.WriteString("# read_timeout: 30s # 读取超时（0 表示不限制）\n")
buf.WriteString("# write_timeout: 30s # 写入超时（0 表示不限制）\n")
buf.WriteString("# idle_timeout: 120s # 空闲超时（0 表示不限制）\n")
buf.WriteString("# max_conns_per_ip: 1000 # 每 IP 最大连接数（0 表示不限制）\n")
buf.WriteString("# max_requests_per_conn: 10000 # 每连接最大请求数（0 表示不限制）\n")
buf.WriteString("# static: # 静态文件配置\n")
buf.WriteString("# root: /var/www/api\n")
buf.WriteString("# index: [index.html]\n")
buf.WriteString("# proxy: # 反向代理配置\n")
buf.WriteString("# - path: /api\n")
buf.WriteString("# targets:\n")
buf.WriteString("# - url: http://backend:8080\n")
buf.WriteString("# load_balance: round_robin\n")
buf.WriteString("# ssl: # SSL/TLS 配置\n")
buf.WriteString("# cert: /path/to/api.cert.pem\n")
buf.WriteString("# key: /path/to/api.key.pem\n")
buf.WriteString("# protocols: [TLSv1.2, TLSv1.3]\n")
buf.WriteString("# hsts:\n")
buf.WriteString("# max_age: 31536000\n")
buf.WriteString("# include_sub_domains: true\n")
buf.WriteString("# security: # 安全配置\n")
buf.WriteString("# access:\n")
buf.WriteString("# default: allow\n")
buf.WriteString("# rate_limit:\n")
buf.WriteString("# request_rate: 100\n")
buf.WriteString("# headers:\n")
buf.WriteString("# x_frame_options: DENY\n")
buf.WriteString("# compression: # 响应压缩配置\n")
buf.WriteString("# type: gzip\n")
buf.WriteString("# level: 6\n")
buf.WriteString("# - listen: \":8443\" # 另一个虚拟主机\n")
buf.WriteString("# name: \"static.example.com\"\n")
buf.WriteString("# static:\n")
buf.WriteString("# root: /var/www/static\n")
buf.WriteString("# index: [index.html, index.htm]\n")
buf.WriteString("# ssl:\n")
buf.WriteString("# cert: /path/to/static.cert.pem\n")
buf.WriteString("# key: /path/to/static.key.pem\n")
buf.WriteString("# compression:\n")
buf.WriteString("# type: gzip\n")
buf.WriteString("\n")
// SSL 默认值说明（即使不启用也展示默认配置）
buf.WriteString("# SSL/TLS 默认配置说明（未配置证书时不启用）\n")
buf.WriteString("# 默认 TLS 协议: TLSv1.2, TLSv1.3（不支持 TLSv1.0/1.1）\n")
buf.WriteString("# 默认 HSTS 配置: max_age=31536000（1年）, include_sub_domains=true\n")
buf.WriteString("\n")
// stream 配置
buf.WriteString("# TCP/UDP Stream 代理配置（可选）\n")
buf.WriteString("# stream:\n")
buf.WriteString("# - listen: \"3306\" # 监听地址\n")
buf.WriteString("# protocol: \"tcp\" # 协议类型（有效值: tcp, udp）\n")
buf.WriteString("# upstream:\n")
buf.WriteString("# targets: # 上游目标列表\n")
buf.WriteString("# - addr: \"mysql1:3306\" # 目标地址\n")
buf.WriteString("# weight: 3 # 权重（加权轮询时有效）\n")
buf.WriteString("# - addr: \"mysql2:3306\"\n")
buf.WriteString("# weight: 1\n")
buf.WriteString("# load_balance: \"round_robin\" # 负载均衡算法（有效值: round_robin, weighted_round_robin, least_conn, ip_hash）\n")
buf.WriteString("\n")
// logging 配置
buf.WriteString("# 日志配置\n")
buf.WriteString("logging:\n")
buf.WriteString(fmt.Sprintf(" format: \"%s\" # 全局日志格式（有效值: text, json），控制启动/停止日志格式\n", cfg.Logging.Format))
buf.WriteString(" access:\n")
buf.WriteString(" path: \"\" # 日志文件路径（空表示输出到 stdout）\n")
buf.WriteString(fmt.Sprintf(" format: '%s' # 访问日志格式，近似 nginx combined\n", cfg.Logging.Access.Format))
buf.WriteString(" # 支持变量: $remote_addr, $remote_user, $request, $status, $body_bytes_sent, $request_time, $http_referer, $http_user_agent, $time\n")
buf.WriteString(" # 特殊值 \"json\" 输出结构化 JSON\n")
buf.WriteString(" error:\n")
buf.WriteString(" path: \"\" # 日志文件路径（空表示输出到 stderr）\n")
buf.WriteString(fmt.Sprintf(" level: \"%s\" # 日志级别（有效值: debug, info, warn, error，级别越高日志越少）\n", cfg.Logging.Error.Level))
buf.WriteString("\n")
// performance 配置
buf.WriteString("# 性能配置\n")
buf.WriteString("performance:\n")
buf.WriteString(" goroutine_pool: # Goroutine 池（处理并发请求）\n")
buf.WriteString(fmt.Sprintf(" enabled: %v # 是否启用\n", cfg.Performance.GoroutinePool.Enabled))
buf.WriteString(fmt.Sprintf(" max_workers: %d # 最大 worker 数\n", cfg.Performance.GoroutinePool.MaxWorkers))
buf.WriteString(fmt.Sprintf(" min_workers: %d # 最小 worker 数（预热）\n", cfg.Performance.GoroutinePool.MinWorkers))
buf.WriteString(fmt.Sprintf(" idle_timeout: %ds # 空闲超时\n", int(cfg.Performance.GoroutinePool.IdleTimeout.Seconds())))
buf.WriteString(" file_cache: # 静态文件缓存\n")
buf.WriteString(fmt.Sprintf(" max_entries: %d # 最大缓存条目\n", cfg.Performance.FileCache.MaxEntries))
buf.WriteString(fmt.Sprintf(" max_size: %d # 内存上限（字节，%dMB）\n", cfg.Performance.FileCache.MaxSize, cfg.Performance.FileCache.MaxSize/1024/1024))
buf.WriteString(fmt.Sprintf(" inactive: %ds # 未访问淘汰时间\n", int(cfg.Performance.FileCache.Inactive.Seconds())))
buf.WriteString(fmt.Sprintf(" lru_eviction: %v # 启用 LRU 淘汰\n", cfg.Performance.FileCache.LRUEviction))
buf.WriteString(" transport: # HTTP Transport 连接池\n")
buf.WriteString(fmt.Sprintf(" max_idle_conns: %d # 最大空闲连接\n", cfg.Performance.Transport.MaxIdleConns))
buf.WriteString(fmt.Sprintf(" max_idle_conns_per_host: %d # 每主机空闲连接\n", cfg.Performance.Transport.MaxIdleConnsPerHost))
buf.WriteString(fmt.Sprintf(" idle_conn_timeout: %ds # 空闲超时\n", int(cfg.Performance.Transport.IdleConnTimeout.Seconds())))
buf.WriteString(fmt.Sprintf(" max_conns_per_host: %d # 每主机最大连接（0 表示不限制）\n", cfg.Performance.Transport.MaxConnsPerHost))
buf.WriteString("\n")
// HTTP3 配置
buf.WriteString("# HTTP/3 (QUIC) 配置（需要 SSL 证书）\n")
buf.WriteString("http3:\n")
buf.WriteString(fmt.Sprintf(" enabled: %v # 是否启用 HTTP/3\n", cfg.HTTP3.Enabled))
buf.WriteString(fmt.Sprintf(" listen: \"%s\" # UDP 监听地址\n", cfg.HTTP3.Listen))
buf.WriteString(fmt.Sprintf(" max_streams: %d # 最大并发流\n", cfg.HTTP3.MaxStreams))
buf.WriteString(fmt.Sprintf(" idle_timeout: %ds # 空闲超时\n", int(cfg.HTTP3.IdleTimeout.Seconds())))
buf.WriteString(fmt.Sprintf(" enable_0rtt: %v # 启用 0-RTT（早期数据，可能存在安全风险）\n", cfg.HTTP3.Enable0RTT))
buf.WriteString("\n")
// monitoring 配置
buf.WriteString("# 监控配置\n")
buf.WriteString("monitoring:\n")
buf.WriteString(" status:\n")
buf.WriteString(fmt.Sprintf(" path: \"%s\" # 状态端点路径\n", cfg.Monitoring.Status.Path))
buf.WriteString(" allow: # 允许访问的 IP\n")
for _, ip := range cfg.Monitoring.Status.Allow {
buf.WriteString(fmt.Sprintf(" - \"%s\"\n", ip))
}
return buf.Bytes(), nil
}
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