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# 修改为你的域名
api.sub2api.com {
# =========================================================================
# 静态资源长期缓存(高优先级,放在最前面)
# 带 hash 的文件可以永久缓存,浏览器和 CDN 都会缓存
# =========================================================================
@static {
path /assets/*
path /logo.png
path /favicon.ico
}
header @static {
Cache-Control "public, max-age=31536000, immutable"
# 移除可能干扰缓存的头
-Pragma
-Expires
}
# =========================================================================
# TLS 安全配置
# =========================================================================
tls {
# 仅使用 TLS 1.2 和 1.3
protocols tls1.2 tls1.3
# 优先使用的加密套件
ciphers TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384 TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256 TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
}
# =========================================================================
# 反向代理配置
# =========================================================================
reverse_proxy localhost:8080 {
# 健康检查
health_uri /health
health_interval 30s
health_timeout 10s
health_status 200
# 负载均衡策略(单节点可忽略,多节点时有用)
lb_policy round_robin
lb_try_duration 5s
lb_try_interval 250ms
# 传递真实客户端信息
# 兼容 Cloudflare 和直连:后端应优先读取 CF-Connecting-IP其次 X-Real-IP
header_up X-Real-IP {remote_host}
header_up X-Forwarded-For {remote_host}
header_up X-Forwarded-Proto {scheme}
header_up X-Forwarded-Host {host}
# 保留 Cloudflare 原始头(如果存在)
# 后端获取 IP 的优先级建议: CF-Connecting-IP → X-Real-IP → X-Forwarded-For
header_up CF-Connecting-IP {http.request.header.CF-Connecting-IP}
# 连接池优化
transport http {
keepalive 120s
keepalive_idle_conns 256
read_buffer 16KB
write_buffer 16KB
compression off
}
# 故障转移
fail_duration 30s
max_fails 3
unhealthy_status 500 502 503 504
}
# =========================================================================
# 压缩配置
# =========================================================================
encode {
zstd
gzip 6
minimum_length 256
match {
header Content-Type text/*
header Content-Type application/json*
header Content-Type application/javascript*
header Content-Type application/xml*
header Content-Type application/rss+xml*
header Content-Type image/svg+xml*
}
}
# =========================================================================
# 请求大小限制 (防止大文件攻击)
# =========================================================================
request_body {
max_size 100MB
}
# =========================================================================
# 日志配置
# =========================================================================
log {
output file /var/log/caddy/sub2api.log {
roll_size 50mb
roll_keep 10
roll_keep_for 720h
}
format json
level INFO
}
# =========================================================================
# 错误处理
# =========================================================================
handle_errors {
respond "{err.status_code} {err.status_text}"
}
}