add QUIC support

Signed-off-by: Marten Seemann <[email protected]>

Author: marten-seemann

core/core.go

@@ -20,6 +20,10 @@ import (
 	"strings"
 	"time"
 
+
+	// TODO: use gx
+	quic "github.com/libp2p/go-libp2p-quic-transport"
+
 	rp "github.com/ipfs/go-ipfs/exchange/reprovide"
 	filestore "github.com/ipfs/go-ipfs/filestore"
 	mount "github.com/ipfs/go-ipfs/fuse/mount"
@@ -247,6 +251,10 @@ func (n *IpfsNode) startOnlineServices(ctx context.Context, routingOption Routin
 		libp2pOpts = append(libp2pOpts, libp2p.EnableRelay(opts...))
 	}
 
+	if cfg.Experimental.QUIC {
+		libp2pOpts = append(libp2pOpts, libp2p.Transport(quic.NewTransport))
+	}
+
 	peerhost, err := hostOption(ctx, n.Identity, n.Peerstore, libp2pOpts...)
 
 	if err != nil {

docs/experimental-features.md

@@ -425,5 +425,34 @@ run your daemon with the `--enable-namesys-pubsub` flag; enables pubsub.
 
 - [ ] Needs more people to use and report on how well it works
 - [ ] Add a mechanism for last record distribution on subscription,
-      so that we don't have to hit the DHT for the initial resolution.
-      Alternatively, we could republish the last record periodically.
+  so that we don't have to hit the DHT for the initial resolution.
+  Alternatively, we could republish the last record periodically.
+
+
+
+## QUIC
+
+### In Version
+
+0.4.18
+
+### State
+
+Experiment, disabled by default
+
+### How to enable
+
+Modify your ipfs config:
+
+```
+ipfs config --json Experimental.QUIC true
+```
+
+For listening on a QUIC address, add it the swarm addresses, e.g. `/ip4/0.0.0.0/udp/4001/quic`.
+
+
+### Road to being a real feature
+
+- [ ] The IETF QUIC specification needs to be finalised.
+- [ ] Make sure QUIC connections work reliably
+- [ ] Make sure QUIC connection offer equal or better performance than TCP connections on real world networks

repo/config/experiments.go

@@ -5,4 +5,5 @@ type Experiments struct {
 	UrlstoreEnabled      bool
 	ShardingEnabled      bool
 	Libp2pStreamMounting bool
+	QUIC                 bool
 }