Function getHeaderFieldVals

modules/caddyhttp/matchers.go:1027–1036

getHeaderFieldVals returns the field values for the given fieldName from input. The host parameter should be obtained from the http.Request.Host field, and the transferEncoding from http.Request.TransferEncoding, since net/http removes them from the header map.

(input http.Header, fieldName, host string, transferEncoding []string)

// transferEncoding from http.Request.TransferEncoding, since net/http removes them
// from the header map.
func getHeaderFieldVals(input http.Header, fieldName, host string, transferEncoding []string) []string {
	fieldName = textproto.CanonicalMIMEHeaderKey(fieldName)
	if fieldName == "Host" && host != "" {
		return []string{host}
	}
	if fieldName == "Transfer-Encoding" && input[fieldName] == nil {
		return transferEncoding
	}
	return input[fieldName]
}

// matchHeaders returns true if input matches the criteria in against without regex.
// The host parameter should be obtained from the http.Request.Host field since