311532feb0
Related: #3797 Motivation: There is a race condition where DnsNameResolver.query() can attempt to increase the reference count of the DNS response which was released already by other thread. Modifications: - Make DnsCacheEntry a top-level class for clear access control - Use 'synchronized' to avoid the race condition - Add DnsCacheEntry.retainedResponse() to make sure that the response is never released while it is retained - Make retainedResponse() return null when the response has been released already, so that DnsNameResolver.query() knows that the cached entry has been released Result: The forementioned race condition has been fixed. |
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| main/java/io/netty/resolver/dns | ||
| test/java/io/netty/resolver/dns | ||