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feat: add AutoTLS example #3103

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1 change: 1 addition & 0 deletions examples/README.md
Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,7 @@ Let us know if you find any issue or if you want to contribute and add a new tut
## Examples and Tutorials

- [The libp2p 'host'](./libp2p-host)
- [The libp2p 'host' with AutoTLS](./autotls)
- [Building an http proxy with libp2p](./http-proxy)
- [An echo host](./echo)
- [Routed echo host](./routed-echo/)
Expand Down
2 changes: 2 additions & 0 deletions examples/autotls/.gitignore
Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
autotls
p2p-forge-certs/
14 changes: 14 additions & 0 deletions examples/autotls/README.md
Original file line number Diff line number Diff line change
@@ -0,0 +1,14 @@
# libp2p host with AutoTLS

This example builds on the [libp2p host example](../libp2p-host) example and demonstrates how to use [AutoTLS](https://blog.ipfs.tech/2024-shipyard-improving-ipfs-on-the-web/#autotls-with-libp2p-direct) to automatically generate a wildcard Let's Encrypt TLS certificate unique to the libp2p host (`*.<PeerID>.libp2p.direct`), enabling browsers to directly connect to the libp2p host.

For this example to work, you need to have a public IP address and be publicly reachable. AutoTLS is guarded by connectivity check, and will not ask for a certificate unless your libp2p node emits `event.EvtLocalReachabilityChanged` with `network.ReachabilityPublic`.

## Running the example

From the `go-libp2p/examples` directory run the following:

```sh
cd autotls/
go run .
```
117 changes: 117 additions & 0 deletions examples/autotls/main.go
Original file line number Diff line number Diff line change
@@ -0,0 +1,117 @@
package main

import (
"context"
"fmt"
"os"
"os/signal"
"time"

"github.com/ipfs/go-log/v2"

p2pforge "github.com/ipshipyard/p2p-forge/client"
"github.com/libp2p/go-libp2p"
dht "github.com/libp2p/go-libp2p-kad-dht"
quic "github.com/libp2p/go-libp2p/p2p/transport/quic"
"github.com/libp2p/go-libp2p/p2p/transport/tcp"
ws "github.com/libp2p/go-libp2p/p2p/transport/websocket"
)

var logger = log.Logger("autotls")

func main() {
// Create a background context
ctx := context.Background()

log.SetLogLevel("*", "error")
log.SetLogLevel("basichost", "info") // Set the log level for the basichost package to info
log.SetLogLevel("autotls", "debug") // Set the log level for the autotls-example package to debug
log.SetLogLevel("p2p-forge", "debug") // Set the log level for the p2pforge package to debug
log.SetLogLevel("nat", "debug") // Set the log level for the p2pforge package to debug

certLoaded := make(chan bool, 1) // Create a channel to signal when the cert is loaded

// p2pforge is the AutoTLS client library.
// The cert manager handles the creation and management of certificate
certManager, err := p2pforge.NewP2PForgeCertMgr(
p2pforge.WithCAEndpoint(p2pforge.DefaultCAEndpoint), // Let's Encrypt production CA. You can also use the staging CA (p2pforge.DefaultCATestEndpoint) to avoid rate limiting.
p2pforge.WithOnCertLoaded(func() {
certLoaded <- true
}),
p2pforge.WithUserAgent("go-libp2p/example/autotls"),
)

if err != nil {
panic(err)
}

// Start the cert manager
certManager.Start()
defer certManager.Stop()

opts := []libp2p.Option{
libp2p.DisableRelay(), // Disable relay, since we need a public IP address
libp2p.NATPortMap(), // Attempt to open ports using UPnP for NATed hosts.

libp2p.ListenAddrStrings(
"/ip4/0.0.0.0/tcp/5500", // regular tcp connections
"/ip4/0.0.0.0/udp/5500/quic-v1", // a UDP endpoint for the QUIC transport

// AutoTLS will automatically generate a certificate for this host
// and use the forge domain (`libp2p.direct`) as the SNI hostname.
fmt.Sprintf("/ip4/0.0.0.0/tcp/5500/tls/sni/*.%s/ws", p2pforge.DefaultForgeDomain),
fmt.Sprintf("/ip6/::/tcp/5500/tls/sni/*.%s/ws", p2pforge.DefaultForgeDomain),
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),

// Configure the TCP transport
libp2p.Transport(tcp.NewTCPTransport),

// Configure the QUIC transport
libp2p.Transport(quic.NewTransport),
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// Configure the WS transport with the AutoTLS cert manager
libp2p.Transport(ws.New, ws.WithTLSConfig(certManager.TLSConfig())),

libp2p.UserAgent("go-libp2p/example/autotls"),
// AddrsFactory takes the multiaddrs we're listening on and sets the multiaddrs to advertise to the network.
// We use the AutoTLS address factory so that the `*` in the AutoTLS address string is replaced with the
// actual IP address of the host once detected
libp2p.AddrsFactory(certManager.AddressFactory()),
}
h, err := libp2p.New(opts...)
if err != nil {
panic(err)
}

logger.Info("Host created: ", h.ID())

// Bootstrap the DHT to verify our public IPs address with AutoNAT
dhtOpts := []dht.Option{
dht.Mode(dht.ModeClient),
dht.BootstrapPeers(dht.GetDefaultBootstrapPeerAddrInfos()...),
}
dht, err := dht.New(ctx, h, dhtOpts...)
if err != nil {
panic(err)
}

go dht.Bootstrap(ctx)

time.Sleep(5 * time.Second)

logger.Info("Addresses: ", h.Addrs())

certManager.ProvideHost(h)

select {
case <-certLoaded:
logger.Info("TLS certificate loaded ")
logger.Info("Addresses: ", h.Addrs())
case <-ctx.Done():
logger.Info("Context done")
}
// Wait for interrupt signal
c := make(chan os.Signal, 1)
signal.Notify(c, os.Interrupt)
<-c
}
90 changes: 48 additions & 42 deletions examples/go.mod
Original file line number Diff line number Diff line change
@@ -1,27 +1,30 @@
module github.com/libp2p/go-libp2p/examples

go 1.22.0
go 1.23

toolchain go1.22.3
toolchain go1.23.3
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require (
github.com/gogo/protobuf v1.3.2
github.com/google/uuid v1.6.0
github.com/ipfs/go-datastore v0.6.0
github.com/ipfs/go-log/v2 v2.5.1
github.com/libp2p/go-libp2p v0.37.0
github.com/libp2p/go-libp2p-kad-dht v0.25.1
github.com/multiformats/go-multiaddr v0.13.0
github.com/ipshipyard/p2p-forge v0.1.0
github.com/libp2p/go-libp2p v0.38.1
github.com/libp2p/go-libp2p-kad-dht v0.28.1
github.com/multiformats/go-multiaddr v0.14.0
github.com/prometheus/client_golang v1.20.5
)

require (
github.com/benbjohnson/clock v1.3.5 // indirect
github.com/beorn7/perks v1.0.1 // indirect
github.com/caddyserver/certmagic v0.21.4 // indirect
github.com/caddyserver/zerossl v0.1.3 // indirect
github.com/cespare/xxhash/v2 v2.3.0 // indirect
github.com/containerd/cgroups v1.1.0 // indirect
github.com/coreos/go-systemd/v22 v22.5.0 // indirect
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
github.com/davidlazar/go-crypto v0.0.0-20200604182044-b73af7476f6c // indirect
github.com/decred/dcrd/dcrec/secp256k1/v4 v4.3.0 // indirect
github.com/docker/go-units v0.5.0 // indirect
Expand All @@ -33,105 +36,108 @@ require (
github.com/go-task/slim-sprig/v3 v3.0.0 // indirect
github.com/godbus/dbus/v5 v5.1.0 // indirect
github.com/google/gopacket v1.1.19 // indirect
github.com/google/pprof v0.0.0-20241017200806-017d972448fc // indirect
github.com/google/pprof v0.0.0-20241210010833-40e02aabc2ad // indirect
github.com/gorilla/websocket v1.5.3 // indirect
github.com/hashicorp/errwrap v1.1.0 // indirect
github.com/hashicorp/go-multierror v1.1.1 // indirect
github.com/hashicorp/golang-lru v0.5.4 // indirect
github.com/hashicorp/golang-lru v1.0.2 // indirect
github.com/huin/goupnp v1.3.0 // indirect
github.com/ipfs/boxo v0.10.0 // indirect
github.com/ipfs/boxo v0.25.0 // indirect
github.com/ipfs/go-cid v0.4.1 // indirect
github.com/ipfs/go-log v1.0.5 // indirect
github.com/ipld/go-ipld-prime v0.20.0 // indirect
github.com/ipld/go-ipld-prime v0.21.0 // indirect
github.com/jackpal/go-nat-pmp v1.0.2 // indirect
github.com/jbenet/go-temp-err-catcher v0.1.0 // indirect
github.com/jbenet/goprocess v0.1.4 // indirect
github.com/klauspost/compress v1.17.11 // indirect
github.com/klauspost/cpuid/v2 v2.2.8 // indirect
github.com/klauspost/cpuid/v2 v2.2.9 // indirect
github.com/koron/go-ssdp v0.0.4 // indirect
github.com/libdns/libdns v0.2.2 // indirect
github.com/libp2p/go-buffer-pool v0.1.0 // indirect
github.com/libp2p/go-cidranger v1.1.0 // indirect
github.com/libp2p/go-flow-metrics v0.2.0 // indirect
github.com/libp2p/go-libp2p-asn-util v0.4.1 // indirect
github.com/libp2p/go-libp2p-kbucket v0.6.3 // indirect
github.com/libp2p/go-libp2p-kbucket v0.6.4 // indirect
github.com/libp2p/go-libp2p-record v0.2.0 // indirect
github.com/libp2p/go-libp2p-routing-helpers v0.7.2 // indirect
github.com/libp2p/go-libp2p-routing-helpers v0.7.4 // indirect
github.com/libp2p/go-msgio v0.3.0 // indirect
github.com/libp2p/go-nat v0.2.0 // indirect
github.com/libp2p/go-netroute v0.2.1 // indirect
github.com/libp2p/go-netroute v0.2.2 // indirect
github.com/libp2p/go-reuseport v0.4.0 // indirect
github.com/libp2p/go-yamux/v4 v4.0.1 // indirect
github.com/libp2p/zeroconf/v2 v2.2.0 // indirect
github.com/marten-seemann/tcp v0.0.0-20210406111302-dfbc87cc63fd // indirect
github.com/mattn/go-isatty v0.0.20 // indirect
github.com/mholt/acmez/v2 v2.0.3 // indirect
github.com/miekg/dns v1.1.62 // indirect
github.com/mikioh/tcpinfo v0.0.0-20190314235526-30a79bb1804b // indirect
github.com/mikioh/tcpopt v0.0.0-20190314235656-172688c1accc // indirect
github.com/minio/sha256-simd v1.0.1 // indirect
github.com/mr-tron/base58 v1.2.0 // indirect
github.com/multiformats/go-base32 v0.1.0 // indirect
github.com/multiformats/go-base36 v0.2.0 // indirect
github.com/multiformats/go-multiaddr-dns v0.4.0 // indirect
github.com/multiformats/go-multiaddr-dns v0.4.1 // indirect
github.com/multiformats/go-multiaddr-fmt v0.1.0 // indirect
github.com/multiformats/go-multibase v0.2.0 // indirect
github.com/multiformats/go-multicodec v0.9.0 // indirect
github.com/multiformats/go-multihash v0.2.3 // indirect
github.com/multiformats/go-multistream v0.5.0 // indirect
github.com/multiformats/go-multistream v0.6.0 // indirect
github.com/multiformats/go-varint v0.0.7 // indirect
github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
github.com/onsi/ginkgo/v2 v2.20.2 // indirect
github.com/onsi/ginkgo/v2 v2.22.0 // indirect
github.com/opencontainers/runtime-spec v1.2.0 // indirect
github.com/opentracing/opentracing-go v1.2.0 // indirect
github.com/pbnjay/memory v0.0.0-20210728143218-7b4eea64cf58 // indirect
github.com/pion/datachannel v1.5.9 // indirect
github.com/pion/datachannel v1.5.10 // indirect
github.com/pion/dtls/v2 v2.2.12 // indirect
github.com/pion/ice/v2 v2.3.36 // indirect
github.com/pion/ice/v2 v2.3.37 // indirect
github.com/pion/interceptor v0.1.37 // indirect
github.com/pion/logging v0.2.2 // indirect
github.com/pion/mdns v0.0.12 // indirect
github.com/pion/randutil v0.1.0 // indirect
github.com/pion/rtcp v1.2.14 // indirect
github.com/pion/rtp v1.8.9 // indirect
github.com/pion/sctp v1.8.33 // indirect
github.com/pion/rtcp v1.2.15 // indirect
github.com/pion/rtp v1.8.10 // indirect
github.com/pion/sctp v1.8.35 // indirect
github.com/pion/sdp/v3 v3.0.9 // indirect
github.com/pion/srtp/v2 v2.0.20 // indirect
github.com/pion/stun v0.6.1 // indirect
github.com/pion/transport/v2 v2.2.10 // indirect
github.com/pion/transport/v3 v3.0.7 // indirect
github.com/pion/turn/v2 v2.1.6 // indirect
github.com/pion/webrtc/v3 v3.3.4 // indirect
github.com/pion/webrtc/v3 v3.3.5 // indirect
github.com/pkg/errors v0.9.1 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
github.com/polydawn/refmt v0.89.0 // indirect
github.com/prometheus/client_model v0.6.1 // indirect
github.com/prometheus/common v0.60.0 // indirect
github.com/prometheus/common v0.61.0 // indirect
github.com/prometheus/procfs v0.15.1 // indirect
github.com/quic-go/qpack v0.5.1 // indirect
github.com/quic-go/quic-go v0.48.1 // indirect
github.com/quic-go/quic-go v0.48.2 // indirect
github.com/quic-go/webtransport-go v0.8.1-0.20241018022711-4ac2c9250e66 // indirect
github.com/raulk/go-watchdog v1.3.0 // indirect
github.com/spaolacci/murmur3 v1.1.0 // indirect
github.com/stretchr/testify v1.9.0 // indirect
github.com/stretchr/testify v1.10.0 // indirect
github.com/whyrusleeping/go-keyspace v0.0.0-20160322163242-5b898ac5add1 // indirect
github.com/wlynxg/anet v0.0.5 // indirect
github.com/zeebo/blake3 v0.2.4 // indirect
go.opencensus.io v0.24.0 // indirect
go.opentelemetry.io/otel v1.16.0 // indirect
go.opentelemetry.io/otel/metric v1.16.0 // indirect
go.opentelemetry.io/otel/trace v1.16.0 // indirect
go.opentelemetry.io/auto/sdk v1.1.0 // indirect
go.opentelemetry.io/otel v1.33.0 // indirect
go.opentelemetry.io/otel/metric v1.33.0 // indirect
go.opentelemetry.io/otel/trace v1.33.0 // indirect
go.uber.org/dig v1.18.0 // indirect
go.uber.org/fx v1.23.0 // indirect
go.uber.org/mock v0.5.0 // indirect
go.uber.org/multierr v1.11.0 // indirect
go.uber.org/zap v1.27.0 // indirect
golang.org/x/crypto v0.28.0 // indirect
golang.org/x/exp v0.0.0-20241009180824-f66d83c29e7c // indirect
golang.org/x/mod v0.21.0 // indirect
golang.org/x/net v0.30.0 // indirect
golang.org/x/sync v0.8.0 // indirect
golang.org/x/sys v0.26.0 // indirect
golang.org/x/text v0.19.0 // indirect
golang.org/x/tools v0.26.0 // indirect
gonum.org/v1/gonum v0.13.0 // indirect
google.golang.org/protobuf v1.35.1 // indirect
golang.org/x/crypto v0.31.0 // indirect
golang.org/x/exp v0.0.0-20241217172543-b2144cdd0a67 // indirect
golang.org/x/mod v0.22.0 // indirect
golang.org/x/net v0.33.0 // indirect
golang.org/x/sync v0.10.0 // indirect
golang.org/x/sys v0.28.0 // indirect
golang.org/x/text v0.21.0 // indirect
golang.org/x/tools v0.28.0 // indirect
gonum.org/v1/gonum v0.15.1 // indirect
google.golang.org/protobuf v1.36.0 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
lukechampine.com/blake3 v1.3.0 // indirect
)
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