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Add experimental support for QUIC #11514

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Add experimental support for QUIC #11514

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@kpp kpp commented May 24, 2022 •
edited by dmitry-markin
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This is a follow-up of #6366

From the point of view of Substrate:

  • We now open a UDP socket only if --experimental-quic CLI option is set to true (with default value = false).
  • This UDP socket is used both to accept incoming QUIC connections but also to establish connections to the respective UDP socket of other nodes. In other words, all communications go through this single socket.
  • At the moment, since support is experimental, we refuse all incoming QUIC connections by default. One can listen on incoming QUIC connections by passing --listen-addr /ip4/0.0.0.0/udp/30333/quic-v1. Note that multiaddr should listen on quic-v1 not on quic, otherwise the listening will fail.
  • There is a small caveat at the moment: if you spawn two nodes on the same machine the same UDP port, one of them will fail with "Address already in use". Contrary to TCP/IP, the consequence is that the node which failed to open the UDP port will also be unable to dial the QUIC addresses of other nodes. This is pretty annoying, and I'd be in favour of automatically trying multiple ports if the default one fails to open, but this needs to be brainstormed because of the interaction with --listen-addr.

Before we can consider merging, we need to:

So far I managed to connect two nodes through QUIC:

  • cargo r --bin node-template -- --no-mdns --experimental-quic --listen-addr /ip6/::1/tcp/8081 /ip6/::1/udp/8081/quic-v1 --alice --tmp
  • cargo r --bin node-template -- --no-mdns --experimental-quic --listen-addr /ip4/0.0.0.0/udp/8080/quic-v1 --bootnodes /ip6/::1/udp/8081/quic-v1/p2p/12D3KooWRRNUr42JBC79TuiWSg3BnAcsNwjT6zasJsCrcB5bgaxK --bob --tmp

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User @maxwase, please sign the CLA here.

@kpp kpp added B0-silent Changes should not be mentioned in any release notes D3-trivial 🧸 PR contains trivial changes in a runtime directory that do not require an audit labels May 26, 2022
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kpp commented Jun 25, 2022

I am working on this.

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kpp commented Aug 31, 2022

I am working on this. This is a very important issue.

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@kpp can you give us an update? I agree this is important specially considering the issues with networking/parachains at the moment

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kpp commented Aug 31, 2022

So we got 2 working implementations: libp2p/rust-libp2p#2289 and libp2p/rust-libp2p#2801. Both of them are compatible with the go implementation but none of them are merged.

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kpp commented Oct 1, 2022

I am working on this issue

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LGTM! 👍

client/network/src/transport.rs Outdated Show resolved Hide resolved
client/network/src/transport.rs
.timeout(Duration::from_secs(20))
.timeout(Duration::from_secs(20));

let quic_transport = if enable_quic {
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IMO the either way is OK.

@the-right-joyce the-right-joyce added B1-note_worthy Changes should be noted in the release notes T0-node This PR/Issue is related to the topic “node”. and removed B5-clientnoteworthy labels Feb 13, 2023
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:(

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