quic: increase timeout and keep alive#4695
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This PR contains changes to the solana sdk, which will be moved to a new repo within the next week, when v2.2 is branched from master. Please merge or close this PR as soon as possible, or re-create the sdk changes when the new repository is ready at https://github.com/anza-xyz/solana-sdk |
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Note: reopening #4585, reverted in #4637, to investigate CI issues
Problem
Quic timeout and keep alive are very low.
When a validator is not leader, it still has thousands of connections open that are not expected to send any data.
Because keep alive is 1s, each client sends a quic ping every second, which is a lot of unnecessary traffic.
Summary of Changes
Increased timeout to 30s and keep alive to 20s.