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Update draft-ietf-quic-transport.md
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ianswett committed Jul 23, 2019
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15 changes: 6 additions & 9 deletions draft-ietf-quic-transport.md
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Expand Up @@ -2545,15 +2545,12 @@ separate limits for different remote addresses will ensure that Stateless Reset
packets can be used to close connections when other peers or connections have
exhausted limits.

Reducing the size of a Stateless Reset below the recommended minimum size of 41
bytes could mean that the packet could reveal to an observer that it is a
Stateless Reset. Conversely, refusing to send a Stateless Reset in response to
a small packet might result in Stateless Reset not being useful in detecting
cases of broken connections where only very small packets are sent; such
failures might only be detected by other means, such as timers.

An endpoint can increase the odds that a packet will trigger a Stateless Reset
if it cannot be processed by padding it to at least 42 bytes.
Reducing the size of a Stateless Reset below 41 bytes means that the packet
could reveal to an observer that it is a Stateless Reset, depending upon the
length of the peer's connection IDs. Conversely, refusing to send a Stateless
Reset in response to a small packet might result in Stateless Reset not being
useful in detecting cases of broken connections where only very small packets
are sent; such failures might only be detected by other means, such as timers.


# Error Handling {#error-handling}
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