Apache2 WebSockets在相同的URL上反向代理

Question

如何將Apache2配置為代理WebSocket連接（例如BrowserSync），如果它是在同一個URL上進行的，只有區別是標題“Upgrade：websocket”和URL schema ws：//？

例如：

HTTP request:
GET http://example.com/browser-sync/socket.io/?... HTTP/1.1
...

WebSocket request:
GET ws://example.com/browser-sync/socket.io/?... HTTP/1.1
Connection: upgrade
Upgrade: websocket
Sec-WebSocket-Version: 13
...

我找到的所有示例，僅重定向某些路徑，例如“<Location / ws> ...”或“ProxyPass / ws / ws：//example.com/”

我當前的配置：

ProxyRequests off
<Location />
    ProxyPass http://127.0.0.1:3000/
    ProxyPassReverse /
</Location>

mod_proxy，mod_proxy_http和mod_proxy_wstunnel已啟用。

Answer 1

回答自己。

使用RewriteEngine， 這篇文章給出的提示和WebSocket握手規范：

RewriteEngine On
RewriteCond %{HTTP:Connection} Upgrade [NC]
RewriteCond %{HTTP:Upgrade} websocket [NC]
RewriteRule /(.*) ws://127.0.0.1:3000/$1 [P,L]

ProxyRequests off
<Location />
    ProxyPass http://127.0.0.1:3000/
    ProxyPassReverse /
</Location>

Answer 2

非常感謝metalim！ 我在這里發布完整配置以供參考：

<VirtualHost *>
    ServerName example.org
    ServerAlias *.example.org
    ServerAdmin sysadmin@example.org
    ProxyRequests Off
    ProxyPreserveHost On

    RewriteEngine On
    RewriteCond %{HTTP:Connection} Upgrade [NC]
    RewriteCond %{HTTP:Upgrade} websocket [NC]
    RewriteRule /(.*) ws://192.168.1.1/$1  [P,L]

    ProxyPass / http://192.168.1.1/ retry=1
    ProxyPassReverse / http://192.168.1.1/

    ErrorLog /var/log/apache2/example.org.error.log
    CustomLog /var/log/apache2/example.org.access.log combined
</VirtualHost>