headerReplace

Replaces the specified request/response header by matching a keyword or regular expression.

Rule Syntax

pattern headerReplace://value [filters...]

header-name is case-insensitive

Parameters	Description	Detailed Documentation
pattern	An expression to match the request URL	Match Pattern Documentation
value	Three cases: • req.header-name:p1=v1&p2=v2 • res.header-name:p1=v1&p2=v2 • trailer.trailer-name:p1=v1&p2=v2	Operation Instruction Documentation
filters	Optional filters, supporting matching: • Request URL/Method/Header/Content • Response Status Code/Header	Filter Documentation

Configuration Example

# Change the first `html` keyword in the `accept` request header field to `abc`
www.example.com/path headerReplace://req.accept:html=abc

# Change all `ml` keywords in the `accept` request header field to `abc`
www.example.com/path2 headerReplace://req.accept:/ml/g=abc

# Modify the response header
www.example.com/path3 headerReplace://res.Content-Type:html=plain

headerReplace is used to replace partial request/response header content. To modify request/response field content, you can also use:

• Set request headers: reqHeaders
• Set response headers: resHeaders