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Guiomar Raissa's questions

Martin Hope
Guiomar Raissa
Asked: 2023-07-11 20:12:16 +0800 CST
  • 7

我有以下 haproxy 配置，它access-control-allow-origin使用以下配置在成功的 200 个请求上添加标头。我的问题是，当我遇到超时或 haproxy 本身（不是我的上游服务器）因其他原因引发错误时，不会添加此标头。如何在例如 504 响应中添加此标头？

global
        log /dev/log    local0
        log /dev/log    local1 notice
        chroot /var/lib/haproxy
        stats socket /run/haproxy/admin.sock mode 660 level admin
        stats timeout 30s
        user haproxy
        group haproxy
        daemon

        ca-base /etc/ssl/certs
        crt-base /etc/ssl/private

        ssl-default-bind-ciphers ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA>
        ssl-default-bind-ciphersuites TLS_AES_128_GCM_SHA256:TLS_AES_256_GCM_SHA384:TLS_CHACHA20_POLY1305_SHA256
        ssl-default-bind-options ssl-min-ver TLSv1.2 no-tls-tickets

defaults
        log     global
        mode    http
        option  httplog
        option  dontlognull
        timeout connect 5s
        timeout client  30s
        timeout server  30s
        errorfile 400 /etc/haproxy/errors/400.http
        errorfile 403 /etc/haproxy/errors/403.http
        errorfile 408 /etc/haproxy/errors/408.http
        errorfile 500 /etc/haproxy/errors/500.http
        errorfile 502 /etc/haproxy/errors/502.http
        errorfile 503 /etc/haproxy/errors/503.http
        errorfile 504 /etc/haproxy/errors/504.http

frontend www-https
    bind *:80
    bind *:443 ssl crt /etc/ssl/cert.io.pem

    http-response add-header access-control-allow-origin "myCoolWebsite.com"

    redirect scheme https code 301 if !{ ssl_fc }
    mode http

    default_backend myBackend


backend myBackend
  server myServer 123.456.789.101:2345

编辑：我主要通过为 504 添加自定义错误文件来解决这个问题，如下所示。唯一的问题是我无法弄清楚如何将 动态设置access-control-allow-origin为仅当前请求的域而不是*. 这是一个问题，因为某些浏览器在接收*. 我有什么想法可以做到这一点吗？

// 504.http
HTTP/1.0 504 Gateway Time-out
Cache-Control: no-cache
Connection: close
Content-Type: text/html
Access-Control-Allow-Origin: *
Access-Control-Allow-Methods:\ GET,\ HEAD,\ OPTIONS,\ POST,\ PUT
Access-Control-Allow-Credentials:\ true
Access-Control-Allow-Headers:\ Origin,\ Accept,\ X-Requested-With,\ Content-Type,\ Access-Control-Request-Method,\ Access-Control-Request-Headers,\ Authorization

{
  "html": {
    "body": {
      "h1": "504 Gateway Time-out",
      "#text": "The server didn't respond in time."
    }
  }
}
haproxy