[quicwg/base-drafts] We lost the text recommending replacement of used CIDs (#2725)

Eric Kinnear <notifications@github.com> Mon, 20 May 2019 14:37 UTC

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Subject: [quicwg/base-drafts] We lost the text recommending replacement of used CIDs (#2725)
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We previously had text: 
```
The endpoint SHOULD do this by supplying a new connection ID when a connection
ID is retired by its peer or when the endpoint receives a packet with a
previously unused connection ID.
```

In adding text for the TP (active_connection_id_limit), we kept the same idea, but lost a little bit of the text: 
```
An endpoint SHOULD NOT provide more connection IDs than the peer's limit.  If an
endpoint has provided its peer with the maximum number of connection IDs, it
SHOULD only provide a new connection ID when the peer retires one.
```

We still need the SHOULD replace used CIDs in the event that we *haven't* provided the peer with the maximum number of CIDs.

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