Comment 6 for bug 319710

Francis can you explain the rationale for this "pipelining" exception? It is referred to obliquely in the code, and you make an unexplained reference above, but I do not understand the use case and why we need to turn the spec upside down to support it.

In my understanding the spec says the nonce must be unique only for a window of one second, the granularity of a timestamp.

The pipelining exception seems to indicate the nonce can be non-unique for a window of +/- 60 seconds. That exception completely destroys the utility of using a nonce in the first place as it now must not be unique for a given timestamp.