HAProxy HTTP请求将特定路径重定向到另一路径

Question

我对HTTP协议和HAProxy有点熟悉，但是我以前从未真正搞过URL重写和重定向。现在，我有2个“简单的” HTTP重定向要求，这让我一直很难解决。

1. [https://appserver.example.com应该重定向到https://appserver.example.com/myapp/webapp/?auth=saml以将用户指向saml登录页面。
2. [https://appserver.example.com/?auth=standard应该重定向到https://appserver.example.com/myapp/webapp/?auth=standard

要求1运作良好：

myuser:~ myuser$ curl -I https://appserver.example.com
HTTP/1.1 301 Moved Permanently
Content-length: 0
Location: https://appserver.example.com/myapp/webapp/?auth=saml
Connection: close

myuser:~ myuser$ 

但是我在实施＃2方面遇到了困难。如我所想，此操作的关键是要添加一个acl，然后在匹配http-request redirect prefix时添加另外的acl行。

acl is_auth_std path /?auth=standard
http-request redirect prefix /myapp/webapp/?auth=standard code 301 if is_auth_std

但是显然这还不够。 /?auth=standard仍重定向到假定的根URL：

myuser:~ myuser$ curl -I https://appserver.example.com/?auth=standard
HTTP/1.1 301 Moved Permanently
Content-length: 0
Location: https://appserver.example.com/myapp/webapp/?auth=saml
Connection: close

myuser:~ myuser$

这些是我的haproxy.cfg文件的相关部分：

frontend myapp443-in
    mode http
    bind *:443 ssl crt /etc/haproxy/ssl/myapp.pem
    default_backend myapp443-out
    option forwardfor

    timeout client          60m
    timeout http-keep-alive 10s
    timeout http-request    5s
    timeout tarpit          60s

    acl is_websocket path_beg /myapp/webapp/
    acl is_websocket hdr(Upgrade) -i WebSocket
    acl is_websocket hdr_beg(Host) -i ws

    acl is_root path /

    capture request  header Host len 64

    http-request redirect scheme https code 301 if !{ ssl_fc }
    http-request redirect code 301 location https://%[hdr(host)]/myapp/webapp/?auth=saml if is_root
    acl is_auth_std path /?auth=standard
    http-request redirect prefix /myapp/webapp/?auth=standard code 301 if is_auth_std

backend myapp443-out
    cookie SRVID insert indirect nocache maxidle 30m maxlife 1h
    option forwardfor
    balance leastconn

    option ssl-hello-chk

    option httpchk GET /myapp/webapp/img/favicon.ico
    http-check expect status 200
    default-server inter 1s downinter 3s rise 15 fall 15
    timeout check 1s

    timeout server          60s
    timeout tunnel        3600s
    timeout queue           30s
    timeout connect          5s

    http-request add-header X-Forwarded-Proto https if { ssl_fc }

    redirect scheme https if !{ ssl_fc }

    http-response add-header Strict-Transport-Security max-age=31536000;\ includeSubdomains
    http-response add-header X-Content-Type-Options nosniff
    http-response add-header X-XSS-Protection 1;\ mode=block
    http-response add-header Referrer-Policy no-referrer
    http-response add-header Feature-Policy accelerometer\ 'none';\ ambient-light-sensor\ 'none';\ autoplay\ 'none';\ camera\ 'none';\ display-capture\ 'none';\ document-domain\ 'none';\ fullscreen\ 'none';\ execution-while-not-rendered\ 'none';\ execution-while-out-of-viewport\ 'none';\ gyroscope\ 'none';\ magnetometer\ 'none';\ microphone\ 'none';\ midi\ 'none';\ payment\ 'none';\ picture-in-picture\ 'none';\ publickey-credentials\ 'none';\ sync-xhr\ 'none';\ usb\ 'none';\ wake-lock\ 'none'

    server appserver-01 appserver-01:8443 weight 5 check ssl verify none cookie s1
    server appserver-02 appserver-02:8443 weight 5 check ssl verify none cookie s1

任何想法我想念的是什么？

谢谢。

Answer 1

您将需要使用url_param来匹配查询字符串中的参数。

frontend myapp443-in
    mode http
    bind *:443 ssl crt /etc/haproxy/ssl/myapp.pem
    default_backend myapp443-out
    option forwardfor

    timeout client          60m
    timeout http-keep-alive 10s
    timeout http-request    5s
    timeout tarpit          60s

    # if not https => redirect, no need to check acls
    http-request redirect scheme https code 301 if !{ ssl_fc }

    acl is_websocket path_beg /myapp/webapp/
    acl is_websocket hdr(Upgrade) -i WebSocket
    acl is_websocket hdr_beg(Host) -i ws

    acl is_root path /
    acl is_auth_std url_param(auth) standard

    capture request  header Host len 64

    http-request redirect code 301 location https://%[hdr(host)]/myapp/webapp/?auth=standard if is_auth_std

    http-request redirect code 301 location https://%[hdr(host)]/myapp/webapp/?auth=saml if is_root

redirect prefix附加您可能不想要的/