DataBufferUtils#takeUntilByteCount checks one extra buffer but does not release it [SPR-17118]

[spring-projects-issues]

Rossen Stoyanchev opened SPR-17118 and commented

The current implementation relies on Flux#takeWhile to be invoked with one extra buffer beyond the buffer for which the max byte count was reached. However that extra buffer is not released. Arguably it should not even have to wait for for an extra buffer, when it already knows the max byte count was reached.

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Affects: 5.0.8

Issue Links:

• DataBufferUtils#join could leak buffers in case of error from the source [SPR-17025] #21563 DataBufferUtils#join could leak buffers in case of error from the source
• Add ExchangeFilterFunction that enforces limit on the response size [SPR-16989] #21527 Add ExchangeFilterFunction that enforces limit on the response size