如何停止 HAProxy 将我的 POST 转换为 GET

How to stop HAProxy converting my POST to GET

出于某种原因,haproxy 正在转换我的请求。下面是日志输出。

wc_haproxy    | 172.29.0.1:35296 [03/Nov/2021:22:03:44.901] http http/<NOSRV> 0/-1/-1/-1/0 302 134 - - LR-- 1/1/0/0/0 0/0 "POST /register HTTP/1.1"
wc_haproxy    | 172.29.0.1:58040 [03/Nov/2021:22:03:44.906] http~ app/app1 0/0/1/0/1 404 130 - - ---- 1/1/0/0/0 0/0 "GET /register HTTP/1.1"

以下是我的配置:

global
  log stdout format raw local0

defaults
    mode http
    timeout client 10s
    timeout connect 5s
    timeout server 10s
    timeout http-request 10s
    log global

frontend http
    bind *:80
    bind *:443 ssl crt /usr/local/etc/haproxy/company.com.pem
    redirect scheme https if !{ ssl_fc }
    option httplog
    acl sub1 hdr_sub(host) -i app.company.com
    use_backend app if sub1
    use_backend frontstore

backend frontstore
    option forwardfor
    option httpchk GET /
    http-check send ver HTTP/1.1 hdr Host frontstore
    server frontstore1 frontstore:8001 check
    http-request set-header X-Forwarded-Port %[dst_port]
    http-request add-header X-Forwarded-Proto https if { ssl_fc }

backend app
    option forwardfor
    option httpchk GET /check
    http-check send ver HTTP/1.1 hdr Host app
    server app1 app:8002 check
    http-request set-header X-Forwarded-Port %[dst_port]
    http-request add-header X-Forwarded-Proto https if { ssl_fc }

有谁知道为什么会那样做?

仅供参考,我正在使用 docker 图片“haproxy:lts-alpine”,如果这有什么不同的话。

因为你的 frontend 配置:

frontend http
    ...
    redirect scheme https if !{ ssl_fc }

HAProxy 正在将您的应用程序流量从 HTTP 重定向到 HTTPS。您可以在日志中查看它,因为它返回 302 HTTP 状态代码:

wc_haproxy    | 172.29.0.1:35296 [03/Nov/2021:22:03:44.901] http http/<NOSRV> 0/-1/-1/-1/0 302 134 - - LR-- 1/1/0/0/0 0/0 "POST /register HTTP/1.1"

请考虑查看 HAProxy relevant documentation

POST 302 重定向到 GET 转换是一种常见的浏览器模式。请考虑阅读 this SO question。我认为这可能与您的问题有关。