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Avoid possible comparison contract violation (#9883)

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Motivation:

The current implementation causes IllegalArgumetExceptions to be thrown on Java 11.

The current implementation would violate comparison contract for two cookies C1 and C2 with same path length, since C1 < C2 and C2 < C1. Returning 0 (equality) does not since C1 == C2 and C2 == C1. See #9881

Modification:

Return equality instead of less than on same path length.

Result:

Fixes #9881.
This commit is contained in:
Gerd Riesselmann 2019-12-19 12:16:27 +01:00 committed by Norman Maurer
parent 95b8db0633
commit f995426a59
1 changed files with 2 additions and 2 deletions
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4
codec-http/src/main/java/io/netty/handler/codec/http/cookie/ClientCookieEncoder.java
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@ -107,9 +107,9 @@ public final class ClientCookieEncoder extends CookieEncoder {
if (diff != 0) {
return diff;
}
// Rely on Java's sort stability to retain creation order in cases where
// Rely on Arrays.sort's stability to retain creation order in cases where
// cookies have same path length.
return -1;
return 0;
}
};