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[#5190] Ensure memory is not leaked when readEndOfLine(...) throws an exception.

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Motivation:

We need to ensure we not retain the buffer until readEndOfLine(...) completes as otherwise we may leak memory in the case of an exception.

Modifications:

Only call retain after readEndOfLine(...) returns.

Result:

No more leak in case of exception while decoding redis messages.
This commit is contained in:
Norman Maurer 2016-05-03 10:32:25 +02:00
parent ef13d19b8b
commit 06436efaa1
1 changed files with 3 additions and 2 deletions
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5
codec-redis/src/main/java/io/netty/handler/codec/redis/RedisDecoder.java
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@ -205,9 +205,10 @@ public final class RedisDecoder extends ByteToMessageDecoder {
// if this is last frame.
if (readableBytes >= remainingBulkLength + RedisConstants.EOL_LENGTH) {
ByteBuf content = in.readSlice(remainingBulkLength).retain();
ByteBuf content = in.readSlice(remainingBulkLength);
readEndOfLine(in);
out.add(new DefaultLastBulkStringRedisContent(content));
// Only call retain after readEndOfLine(...) as the method may throw an exception.
out.add(new DefaultLastBulkStringRedisContent(content.retain()));
resetDecoder();
return true;
}