Disabling Spin bit for what percentage of connections? #3270
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| the spin bit for at least a sixteenth of connections with an expectation that | ||
| the spin bit is disabled for at least one eighth of network paths. The selection | ||
| process performed at the beginning of the connection SHOULD be applied for all | ||
| paths used by the connection. |
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In reviewing this last sentence, I am reminded that this provides a nice signal that might improve linkability. I think that the requirement to perform the determination separately for every network path/connection ID as suggested above is better.
| performed at the beginning of the connection SHOULD be applied for all paths | ||
| used by the connection. | ||
| the spin bit for at least a sixteenth of connections with an expectation that | ||
| the spin bit is disabled for at least one eighth of network paths. The selection |
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endpoints MUST disable their use of the spin bit on at least one in every 16 network paths, or for one in every 16 connection IDs. This ensures that the spin bit signal is disabled on approximately one in eight network paths.
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@martinthomson If we are to "ensure" that the spin bit signal would be disabled for approx. 1/8 of network paths, I think we need to require endpoints to select one in every 16 paths at random. Otherwise, the paths that would have the spin bit disabled could go below 1/8. For example, when there is only one client and one server talking to each other, and if both of them disable spin bit for every 16th connection they handle, then the spin bit would be enabled for only 1/16 of all the connections.
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Quite right.
endpoints MUST disable their use of the spin bit for a random selection of at least one in every 16 network paths, or for one in every 16 connection IDs. This ensures that the spin bit signal is disabled on approximately one in eight network paths.
martinthomson
added
-transport
editorial
Clarify the fractions of connections an endpoint must disable spin bit for.
Fixes #3257.
Closes #2628.