Where can I find a full list of the Tritium variables (such as $host, $path, $content_type, etc.)?
You can find all the accessible environment variables by looking at your tmp/messages/.../final-env.json file.
All the environment variables available are listed in the final-env.json file. This file can be found in the {Moovweb Project Path}/tmp/messages/{Folder ID} directory. To use one of these environment variables in Tritium, you need to add a dollar sign before it: $variable.
They provide a sample final-env.json file there:
{
"0": "https://www.dropbox.com",
"1": "https://www.dropbox.com",
"2": "SAMEORIGIN",
"3": "HTTP/1.0",
"Content-Type-Charset": "UTF-8",
"__catch_all__": ".moovapp.com",
"accept_encoding": "gzip,deflate",
"asset_host": "http://localhost:3003/",
"body": "true",
"body_length": "1195",
"cache_control": "no-cache",
"canonical_found": "false",
"charset_determined": "UTF-8",
"connection": "close",
"content_type": "text/html; charset=utf-8",
"cookie": "gvc=Mjg1NjE0NTk0MjAxMDUyNjY4MTc1NjYyMDE3OTAxNjU0NDk4NTc2",
"date": "Fri, 07 Sep 2012 01:57:35 GMT",
"device_stylesheet": "main",
"found_conn": "true",
"header_hh": "Host: ",
"host": "mlocal.dropbox.com",
"host_hh": "https://mlocal.dropbox.com",
"key": "x_frame_options",
"location": "https://www.dropbox.com/",
"method": "GET",
"path": "/",
"pragma": "no-cache",
"rewriter_url": "false",
"secure": "false",
"server": "nginx/1.0.14",
"set_cookie": "flash=; Domain=dropbox.com; expires=Fri, 07-Sep-2012 01:57:35 GMT; Path=/; httponly",
"slash_path": "/",
"source_host": "www.dropbox.com",
"status": "302",
"use_global_replace_vars": "true",
"user_agent": "Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/534.54.16 (KHTML, like Gecko) Version/5.0.5 Safari/533.21.1",
"value": "SAMEORIGIN",
"x_frame_options": "SAMEORIGIN"
}