Instead of individual handlers, each request deals with one Envelope. This allows fine-tuned error control, along with what's effectively middleware for authentication.
This allows the opportunity to have various handler methods for inserting XML data, instead of a jungle between properly parsing and string-based prayer.
This is an extraordinarily large commit, and in hindsight would have benefitied from being written separately.
To summarise:
- Converts namespace URI parsing to a regex, instead of convoluted string logic
- Removes per-request XML structures in favor of normalised XPath queries
- Moves common variables for all requests to a k/v map of their name and contents, in order to reduce function parameter count
- Changes the name of the ECS action "NotifiedETicketsSynced" to its hardcoded (tenseless) name, "NotifyETicketsSynced"
- Improved properly reporting errors to the end user in areas
