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a2enmod proxy

a2enmod proxy_http

proxyだけだとダメでproxy_httpも有効化する必要がある。

proxy.conf

proxy.confを編集。proxy_httpは編集するものは無い

# If you want to use apache2 as a forward proxy, uncomment the
# 'ProxyRequests On' line and the  block below.
# WARNING: Be careful to restrict access inside the  block.
# Open proxy servers are dangerous both to your network and to the
# Internet at large.
#
# If you only want to use apache2 as a reverse proxy/gateway in
# front of some web application server, you DON'T need
# 'ProxyRequests On'.

#ProxyRequests On
#
#        AddDefaultCharset off
#        Order deny,allow
#        Deny from all
#        #Allow from .example.com
#

# Enable/disable the handling of HTTP/1.1 "Via:" headers.
# ("Full" adds the server version; "Block" removes all outgoing Via: headers)
# Set to one of: Off | On | Full | Block
#ProxyVia Off

        ProxyRequests Off
        
               Order deny,allow
               Allow from all
        
        ProxyPass /stream http://127.0.0.1:9999
        ProxyPassReverse /stream http://127.0.0.1:9999

        ProxyVia On