reta commented on code in PR #1819:
URL: https://github.com/apache/cxf/pull/1819#discussion_r1572837369
##########
core/src/main/java/org/apache/cxf/transport/common/gzip/GZIPOutInterceptor.java:
##########
@@ -337,7 +337,10 @@ private static void addHeader(Message message, String
name, String value) {
if (header.isEmpty()) {
header.add(value);
} else {
- header.set(0, header.get(0) + "," + value);
+ String existingValue = header.get(0);
+ if (!existingValue.contains(value)) {
Review Comment:
I am wondering if this is even correct, why not to add values?
I believe we may just use ` header.add`, the multiple values are
concatenated together using `,` (at least, should):
```
if (!header.contains(value)) {
header.add(value);
}
```
```
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