✨ (libp2p): add libp2p node sample

Author: yuanyu90221

.github/workflows/go.yml

@@ -0,0 +1,24 @@
+name: Go
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+    branches:
+      - master
+jobs:
+  build_and_test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Go
+        uses: actions/setup-go@v5
+        with:
+          go-version: 'stable'
+          check-latest: true
+      - name: Setup dependency
+        run: go mod tidy
+      - name: Test
+        run: go test -v ./internal/...

.gitignore

@@ -0,0 +1,33 @@
+# If you prefer the allow list template instead of the deny list, see community template:
+# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
+#
+# Binaries for programs and plugins
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+
+# Test binary, built with `go test -c`
+*.test
+
+# Code coverage profiles and other test artifacts
+*.out
+coverage.*
+*.coverprofile
+profile.cov
+
+# Dependency directories (remove the comment below to include it)
+# vendor/
+
+# Go workspace file
+go.work
+go.work.sum
+
+# env file
+.env
+
+# Editor/IDE
+# .idea/
+# .vscode/
+bin

Makefile

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+.PHONY=build
+include .env
+export $(shell sed 's/=.*//' .env)
+build:
+	@CGO_ENABLED=0 GOOS=linux go build -o bin/libp2p-node cmd/main.go
+
+run: build
+	@./bin/libp2p-node
+
+coverage:
+	@go test -v -cover ./internal/...
+
+test:
+	@go test -v ./internal/...

README.md

@@ -0,0 +1,8 @@
+# golang-p2p-node-sample
+
+This repository is use libp2p to make peer-to-peer ping pong sample in golang
+
+## Concept
+
+![alt text](concept.png)
+

cmd/main.go

@@ -0,0 +1,32 @@
+package main
+
+import (
+	"context"
+	"log/slog"
+	"os"
+	"os/signal"
+	"syscall"
+
+	"github.com/leetcode-golang-classroom/golang-p2p-node-sample/internal/application"
+	"github.com/leetcode-golang-classroom/golang-p2p-node-sample/internal/config"
+	mlog "github.com/leetcode-golang-classroom/golang-p2p-node-sample/internal/logger"
+)
+
+func main() {
+	// setup logger
+	logger := slog.New(slog.NewJSONHandler(
+		os.Stdout, &slog.HandlerOptions{
+			AddSource: true,
+		},
+	))
+
+	rootContext := context.WithValue(context.Background(), mlog.CtxKey{}, logger)
+	config.Init(rootContext)
+	app := application.New(rootContext, config.AppConfig)
+	ctx, cancel := signal.NotifyContext(rootContext, os.Interrupt, syscall.SIGTERM, syscall.SIGINT)
+	defer cancel()
+	err := app.Start(ctx)
+	if err != nil {
+		logger.Error("failed to start app", "error", err)
+	}
+}

concept.png

@@ -0,0 +1,106 @@
+module github.com/leetcode-golang-classroom/golang-p2p-node-sample
+
+go 1.24.6
+
+toolchain go1.24.9
+
+require github.com/spf13/viper v1.21.0
+
+require (
+	github.com/benbjohnson/clock v1.3.5 // indirect
+	github.com/beorn7/perks v1.0.1 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
+	github.com/davidlazar/go-crypto v0.0.0-20200604182044-b73af7476f6c // indirect
+	github.com/decred/dcrd/dcrec/secp256k1/v4 v4.4.0 // indirect
+	github.com/flynn/noise v1.1.0 // indirect
+	github.com/francoispqt/gojay v1.2.13 // indirect
+	github.com/fsnotify/fsnotify v1.9.0 // indirect
+	github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
+	github.com/google/uuid v1.6.0 // indirect
+	github.com/gorilla/websocket v1.5.3 // indirect
+	github.com/huin/goupnp v1.3.0 // indirect
+	github.com/ipfs/go-cid v0.5.0 // indirect
+	github.com/jackpal/go-nat-pmp v1.0.2 // indirect
+	github.com/jbenet/go-temp-err-catcher v0.1.0 // indirect
+	github.com/klauspost/compress v1.18.0 // indirect
+	github.com/klauspost/cpuid/v2 v2.2.10 // indirect
+	github.com/koron/go-ssdp v0.0.6 // indirect
+	github.com/libp2p/go-buffer-pool v0.1.0 // indirect
+	github.com/libp2p/go-flow-metrics v0.2.0 // indirect
+	github.com/libp2p/go-libp2p v0.44.0 // indirect
+	github.com/libp2p/go-libp2p-asn-util v0.4.1 // indirect
+	github.com/libp2p/go-msgio v0.3.0 // indirect
+	github.com/libp2p/go-netroute v0.3.0 // indirect
+	github.com/libp2p/go-reuseport v0.4.0 // indirect
+	github.com/libp2p/go-yamux/v5 v5.0.1 // indirect
+	github.com/marten-seemann/tcp v0.0.0-20210406111302-dfbc87cc63fd // indirect
+	github.com/miekg/dns v1.1.66 // 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 v0.16.0 // 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 v0.9.1 // indirect
+	github.com/multiformats/go-multihash v0.2.3 // indirect
+	github.com/multiformats/go-multistream v0.6.1 // indirect
+	github.com/multiformats/go-varint v0.0.7 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
+	github.com/pbnjay/memory v0.0.0-20210728143218-7b4eea64cf58 // indirect
+	github.com/pelletier/go-toml/v2 v2.2.4 // indirect
+	github.com/pion/datachannel v1.5.10 // indirect
+	github.com/pion/dtls/v2 v2.2.12 // indirect
+	github.com/pion/dtls/v3 v3.0.6 // indirect
+	github.com/pion/ice/v4 v4.0.10 // indirect
+	github.com/pion/interceptor v0.1.40 // indirect
+	github.com/pion/logging v0.2.3 // indirect
+	github.com/pion/mdns/v2 v2.0.7 // indirect
+	github.com/pion/randutil v0.1.0 // indirect
+	github.com/pion/rtcp v1.2.15 // indirect
+	github.com/pion/rtp v1.8.19 // indirect
+	github.com/pion/sctp v1.8.39 // indirect
+	github.com/pion/sdp/v3 v3.0.13 // indirect
+	github.com/pion/srtp/v3 v3.0.6 // indirect
+	github.com/pion/stun v0.6.1 // indirect
+	github.com/pion/stun/v3 v3.0.0 // indirect
+	github.com/pion/transport/v2 v2.2.10 // indirect
+	github.com/pion/transport/v3 v3.0.7 // indirect
+	github.com/pion/turn/v4 v4.0.2 // indirect
+	github.com/pion/webrtc/v4 v4.1.2 // indirect
+	github.com/prometheus/client_golang v1.22.0 // indirect
+	github.com/prometheus/client_model v0.6.2 // indirect
+	github.com/prometheus/common v0.64.0 // indirect
+	github.com/prometheus/procfs v0.16.1 // indirect
+	github.com/quic-go/qpack v0.5.1 // indirect
+	github.com/quic-go/quic-go v0.55.0 // indirect
+	github.com/quic-go/webtransport-go v0.9.0 // indirect
+	github.com/sagikazarmark/locafero v0.11.0 // indirect
+	github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8 // indirect
+	github.com/spaolacci/murmur3 v1.1.0 // indirect
+	github.com/spf13/afero v1.15.0 // indirect
+	github.com/spf13/cast v1.10.0 // indirect
+	github.com/spf13/pflag v1.0.10 // indirect
+	github.com/subosito/gotenv v1.6.0 // indirect
+	github.com/wlynxg/anet v0.0.5 // indirect
+	go.uber.org/dig v1.19.0 // indirect
+	go.uber.org/fx v1.24.0 // indirect
+	go.uber.org/mock v0.5.2 // indirect
+	go.uber.org/multierr v1.11.0 // indirect
+	go.uber.org/zap v1.27.0 // indirect
+	go.yaml.in/yaml/v3 v3.0.4 // indirect
+	golang.org/x/crypto v0.41.0 // indirect
+	golang.org/x/exp v0.0.0-20250606033433-dcc06ee1d476 // indirect
+	golang.org/x/mod v0.27.0 // indirect
+	golang.org/x/net v0.43.0 // indirect
+	golang.org/x/sync v0.16.0 // indirect
+	golang.org/x/sys v0.35.0 // indirect
+	golang.org/x/text v0.28.0 // indirect
+	golang.org/x/time v0.12.0 // indirect
+	golang.org/x/tools v0.36.0 // indirect
+	google.golang.org/protobuf v1.36.6 // indirect
+	lukechampine.com/blake3 v1.4.1 // indirect
+)