I got an error 500 when trying to access to ws://localhost:8080/ via my Apache2 server. This server runs OpenSuse Leap 42.1 and Apache 2.4.16.
These Apache2 modules are enabled: mod_proxy, mod_proxy_http, mod_proxy_wstunnel.
When the request is called from the local network, everything works fine. URL example: http://<myhost-ip-address>/api/ws/<some-url>. It returns status 101 and the response: Upgrade: websocket. It's OK.
The same kind of request from external network fails. URL example: ws://www.mysite.com/api/ws/<some-url>. It returns error 500.
The Apache access log contains: GET /api/ws/<some-url> HTTP/1.1" 500 ...
The Apache error log contains: [proxy:warn] AH01144: No protocol handler was valid for the URL /api/ws/<some-url>. If you are using a DSO version of mod_proxy, make sure the proxy submodules are included in the configuration using LoadModule.
My httpd.conf:
<VirtualHost *:80>
ServerName mysite.com
ServerAlias mysite.com
# Redirection for ws protocol
ProxyPreserveHost On
ProxyVia full
ProxyRequests OffHere
RewriteEngine On
RewriteCond %{REQUEST_URI} ^/api/ws/(.*) [NC]
RewriteCond %{QUERY_STRING} transport=websocket [NC]
RewriteRule /(.*) ws://localhost:8080/$1 [P,L]
# Proxy pass
ProxyPass /api/ws/ ws://localhost:8080/api/ws/
ProxyPassReverse /api/ws/ ws://localhost:8080/api/ws/
# DocumentRoot
DocumentRoot /srv/www/vhosts/mysite.com
<Directory "/srv/www/vhosts/mysite.com">
Options Indexes SymLinksIfOwnerMatch
AllowOverride None
...
</Directory>
# URL as parameter
AllowEncodedSlashes NoDecode
I followed these previous answers (thank to that): websockets , node.js , socket-io , but with no luck.
Something must be wrong in my configuration. Any ideas?
Best Answer
Looks like you are missing mod_proxy_wstunnel module which is required for Websockets support.
It should be enabled like below in your httpd.conf
Install the module & then it should work fine.