Computes the Twilio request signature (base64 HMAC-SHA1) for a URL + sorted params. Exported so tests can
construct a known-good vector and the live router can sign/verify without duplicating the concat rule.
Parameters
authToken: string
The Twilio Auth Token (HMAC key).
url: string
The full request URL exactly as Twilio invoked it.
Computes the Twilio request signature (base64 HMAC-SHA1) for a URL + sorted params. Exported so tests can construct a known-good vector and the live router can sign/verify without duplicating the concat rule.