SipHeaderTransformStep

One literal transform step. Whitespace is trimmed and collapsed after every step.

op stringrequired

One literal transform step. Whitespace is trimmed and collapsed after every step.

Possible values: [PROP0, PROP1, PROP2, PROP3, PROP4]

PROP0

delimiterstringrequired

Literal, case-insensitive delimiter. When absent from the value, the whole value is kept.

Possible values: non-empty and <= 20 characters

occurrencestring

Possible values: [first, last]

Default value: first

PROP1

delimiterstringrequired

Literal, case-insensitive delimiter. When absent from the value, the whole value is kept.

Possible values: non-empty and <= 20 characters

occurrencestring

Possible values: [first, last]

Default value: first

PROP2

wordsstring[]required

Whole words or phrases removed case-insensitively.

Possible values: >= 1, <= 20

PROP3

findstringrequired

Possible values: non-empty and <= 60 characters

replaceWithstring

Possible values: <= 60 characters

Default value:

PROP4

modestringrequired

Possible values: [lower, upper, title]

SipHeaderTransformStep

{
  "op": "keep_before",
  "delimiter": "string",
  "occurrence": "first"
}