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Signed-off-by: David Goulet <[email protected]>
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No need to have these comments in the implementation of the Trait.
Signed-off-by: David Goulet <[email protected]>
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In unit tests, we set a 1000 by default but else, we don't set a default
so our implementation doesn't forget to set the right value from the
consensus.
Signed-off-by: David Goulet <[email protected]>
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Signed-off-by: David Goulet <[email protected]>
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Instead of having the congestion.rs test module public, make a
test_utils.rs file that contains code for other unit tests within the
congestion module.
Signed-off-by: David Goulet <[email protected]>
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Turns out that RoundTripEstimatorParams is the same exact thing so one
less data structure.
Signed-off-by: David Goulet <[email protected]>
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The big one! This is the Vegas algorithm implementation that is hooked
to the CongestionControl object by implementing the algorithm trait.
Still, at this commit, nothing is being used by the circuit reactor yet.
Related #534
Signed-off-by: David Goulet <[email protected]>
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Add the top level CongestionControl object that will allow the circuit
reactor to use it in order to decide if a cell can be sent or not. In
order to be used, it is configured with an algorithm that implements the
CongestionControlAlgorithm trait.
The Fixed Window algorithm is also added which essentially implements
the SENDME logic as arti knows it today with a fixed window size.
The SENDME code has been refactor in two different logical steps in
order to accomodate the future Vegas algorithm for which the congestion
window logic and SENDME validity is seperated.
There is now a SENDME validator that takes care of tracking the tags
(authenticated SENDMEs) and validating them upon reception. Then, if
valid, the window management is passed down the congestion control
algorithm, at this commit, FixedWindow object.
Related #534
Signed-off-by: David Goulet <[email protected]>
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This commit adds the congestion window object, a round trip estimator
(RTT) and a state enum. These 3 entities are used by congestion control
in a generic way that is they are passed and used by any algorithm.
At this commit, they are not used hence the allow deadcode attribute for
now in order to minimize the build warnings.
We also introduce the params.rs file containing the parameters, taken
from consensus, used to configure these objects. They will be exposed to
the tor-cirmgr crate to build the CircParameters. More will come.
This also introduces the congestion/ directory that will contain more
code in future commits.
Related #534
Signed-off-by: David Goulet <[email protected]>
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