Rule Engine Configuration Character Limit

The current Rule Engine partially matches conditions and operations involving HTTP header names / parameter names. The character range supported by EdgeOne is: letters (a - z, A - Z), digits (0 - 9), and some special characters. Details of the supported special characters are as follows:
character
Header name
Parameter Name
Match condition: HTTP request header
Operations:
custom Cache Key "HTTP headers"
Modify the HTTP node response header
Modify the HTTP back-to-origin request header
client IP header
Client IP Geolocation Header
Match condition: Query string
Operations:
Token authentication "authentication encryption string parameter name"
Token authentication "timestamp parameter name for authentication"
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