The frontend is stateless and can be killed or launched at will. Because of the sensitive information stored in the environment, there is no phpinfo() debug file.

The frontend includes a health check in the form of selfcheck.php, which will send a random sentence to the backend and report back with a non-error status code if it's working as expected.

• DEBUG_KEY URL-safe string that can be passed to selftest.php?key= to get around DDoS protection; defaults to nothing, which means selftest is disabled
• GRAMMAR_DA_HOST Hostname for the Danish grammar backend; defaults to localhost
• GRAMMAR_DA_PORT TCP port that the Danish grammar backend is listening on; defaults to 13400
• GRAMMAR_NB_HOST Hostname for the Norwegian Bokmål grammar backend; defaults to localhost
• GRAMMAR_NB_PORT TCP port that the Norwegian Bokmål grammar backend is listening on; defaults to 13500
• GRAMMAR_SV_HOST Hostname for the Swedish grammar backend; defaults to localhost
• GRAMMAR_SV_PORT TCP port that the Swedish grammar backend is listening on; defaults to 13600
• COMMA_HOST Hostname for the comma backend; defaults to localhost
• COMMA_PORT TCP port that the comma backend is listening on; defaults to 13300
• COMMA_URL NOT IN USE Full URL to the Kommaforslag frontend. If defined, this enables users sending their text to the Kommaforslag service.
• MVID_SERVICE MV-ID service name; defaults to grammateket
• MVID_SECRET MV-ID secret
• MVID_ACCESS_IDS Comma-separated list of AIs that grant access to this service; defaults to product.web.da.grammarsuggestions.release,product.web.sv.grammarsuggestions.release,product.web.nb.grammarsuggestions.release
• CADUCEUS_URL WebSocket URL to the Caduceus message broker; defaults to ws:https://localhost:3000/
• CADUCEUS_SECRET Caduceus secret; defaults to the server's hostname
• GOOGLE_AID Google Analytics Property ID
• HMAC_SERVICE HMAC field to distinguish which service it pertains to; defaults to grammar
• MV_SIGNON_HOST Defaults to signon.vitec-mv.com
• MV_SIGNON_API_HOST Defaults to mvidsignonapi.vitec-mv.com
• MV_IW_DICT_HOST Defaults to dictionary.intowords.com
• MV_IW_ONLINE_HOST Defaults to online.intowords.com
• MV_TEST If set to 1, the MV_*_HOST settings default to their testing equivalents instead; defaults to 0

This repo includes copies of:

• textalk/websocket: https://github.com/Textalk/websocket-php - MIT license
• jquery-scrollintoview: https://github.com/litera/jquery-scrollintoview - MIT license

The code pulls in these external dependencies:

• TinyMCE: Version 4.3 via TinyMCE CDN
• jQuery: Version 1.12.4 via Google Hosted Libraries
• Bootstrap: Version 3.3.7 via MaxCDN