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LyleMiLyleMi
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‎.github/workflows/go.yml‎

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name: Go
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on:
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push:
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branches: [ master ]
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pull_request:
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branches: [ master ]
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jobs:
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build:
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name: Build
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runs-on: ${{ matrix.os }}
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strategy:
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matrix:
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go-version: [1.19.x]
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os: [ubuntu-latest, windows-latest]
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steps:
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- name: Set up Go
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uses: actions/setup-go@v2
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with:
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go-version: ${{ matrix.go-version }}
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- name: Check out code into the Go module directory
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uses: actions/checkout@v2
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- name: Get dependencies
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run: go mod download
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- name: Build
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run: go build -v ./...
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- name: Test
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run: go test -v ./...

‎.github/workflows/release.yml‎

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name: Release
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on:
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release:
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types: [created]
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permissions:
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contents: write
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packages: write
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jobs:
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releases-matrix:
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name: Release ja3proxy binary
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runs-on: ubuntu-latest
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strategy:
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matrix:
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# build and publish in parallel: linux/amd64, linux/arm64,
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# windows/amd64, windows/arm64, darwin/amd64, darwin/arm64
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goos: [ linux, windows, darwin ]
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goarch: [ amd64, arm64 ]
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steps:
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- uses: actions/checkout@v3
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- uses: wangyoucao577/go-release-action@v1.29
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with:
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github_token: ${{ secrets.GITHUB_TOKEN }}
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goos: ${{ matrix.goos }}
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goarch: ${{ matrix.goarch }}
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binary_name: "ja3proxy"

‎.gitignore‎

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# If you prefer the allow list template instead of the deny list, see community template:
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# https://github.com/github/gitignore/blob/main/community/Golang/Go.AllowList.gitignore
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#
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# Binaries for programs and plugins
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*.exe
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*.exe~
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*.dll
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*.so
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*.dylib
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# Test binary, built with `go test -c`
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*.test
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# Output of the go coverage tool, specifically when used with LiteIDE
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*.out
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# Dependency directories (remove the comment below to include it)
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# vendor/
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# Go workspace file
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go.work
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*.pem

‎README.md‎

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# JA3Proxy
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Customizing TLS (JA3) Fingerprints through HTTP Proxy
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## Usage
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```bash
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git clone https://github.com/lylemi/ja3proxy
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cd ja3proxy
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make
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./ja3proxy -port 8080 -client 360Browser -version 7.5
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curl -v -k --proxy http://localhost:8080 https://www.example.com
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```
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### Perdefined clients and versions
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> for full list, see: https://github.com/refraction-networking/utls/blob/master/u_common.go
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| Client | Version |
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| ------ | ------- |
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| Golang | 0 |
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| Firefox | 55 |
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| Firefox | 56 |
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| Firefox | 63 |
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| Firefox | 99 |
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| Firefox | 105 |
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| Chrome | 58 |
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| Chrome | 62 |
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| Chrome | 70 |
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| Chrome | 96 |
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| Chrome | 102 |
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| Chrome | 106 |
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| iOS | 12.1 |
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| iOS | 13 |
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| iOS | 14 |
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| Android | 11 |
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| Edge | 85 |
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| Edge | 106 |
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| Safari | 16.0 |
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| 360Browser | 7.5 |
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| QQBrowser | 11.1 |
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## Contribution
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If you have any ideas or suggestions, please feel free to submit a pull request. We appreciate any contributions.
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## Contact
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If you have any questions or suggestions, please feel free to contact us.

‎cert.go‎

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package main
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import (
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"crypto/rand"
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"crypto/rsa"
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"crypto/x509"
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"crypto/x509/pkix"
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"encoding/pem"
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"math/big"
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"os"
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"time"
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)
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func generateCertificate() error {
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priv, err := rsa.GenerateKey(rand.Reader, 2048)
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if err != nil {
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return err
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}
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notBefore := time.Now()
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notAfter := notBefore.Add(365 * 24 * time.Hour)
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template := x509.Certificate{
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SerialNumber: big.NewInt(1),
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Subject: pkix.Name{CommonName: "localhost"},
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NotBefore: notBefore,
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NotAfter: notAfter,
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KeyUsage: x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
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ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
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BasicConstraintsValid: true,
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IsCA: true,
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}
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derBytes, err := x509.CreateCertificate(rand.Reader, &template, &template, &priv.PublicKey, priv)
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if err != nil {
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return err
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}
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certOut, err := os.Create("cert.pem")
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if err != nil {
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return err
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}
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defer certOut.Close()
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pem.Encode(certOut, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes})
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keyOut, err := os.OpenFile("key.pem", os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
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if err != nil {
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return err
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}
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defer keyOut.Close()
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pem.Encode(keyOut, &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(priv)})
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return nil
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}

‎go.mod‎

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module github.com/lylemi/ja3proxy
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go 1.20
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require github.com/refraction-networking/utls v1.3.2
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require (
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github.com/andybalholm/brotli v1.0.4 // indirect
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github.com/gaukas/godicttls v0.0.3 // indirect
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github.com/klauspost/compress v1.15.15 // indirect
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golang.org/x/crypto v0.5.0 // indirect
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golang.org/x/sys v0.5.0 // indirect
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)

‎go.sum‎

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github.com/andybalholm/brotli v1.0.4 h1:V7DdXeJtZscaqfNuAdSRuRFzuiKlHSC/Zh3zl9qY3JY=
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github.com/andybalholm/brotli v1.0.4/go.mod h1:fO7iG3H7G2nSZ7m0zPUDn85XEX2GTukHGRSepvi9Eig=
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github.com/gaukas/godicttls v0.0.3 h1:YNDIf0d9adcxOijiLrEzpfZGAkNwLRzPaG6OjU7EITk=
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github.com/gaukas/godicttls v0.0.3/go.mod h1:l6EenT4TLWgTdwslVb4sEMOCf7Bv0JAK67deKr9/NCI=
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github.com/klauspost/compress v1.15.15 h1:EF27CXIuDsYJ6mmvtBRlEuB2UVOqHG1tAXgZ7yIO+lw=
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github.com/klauspost/compress v1.15.15/go.mod h1:ZcK2JAFqKOpnBlxcLsJzYfrS9X1akm9fHZNnD9+Vo/4=
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github.com/refraction-networking/utls v1.3.2 h1:o+AkWB57mkcoW36ET7uJ002CpBWHu0KPxi6vzxvPnv8=
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github.com/refraction-networking/utls v1.3.2/go.mod h1:fmoaOww2bxzzEpIKOebIsnBvjQpqP7L2vcm/9KUfm/E=
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golang.org/x/crypto v0.5.0 h1:U/0M97KRkSFvyD/3FSmdP5W5swImpNgle/EHFhOsQPE=
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golang.org/x/crypto v0.5.0/go.mod h1:NK/OQwhpMQP3MwtdjgLlYHnH9ebylxKWv3e0fK+mkQU=
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golang.org/x/sys v0.5.0 h1:MUK/U/4lj1t1oPg0HfuXDN/Z1wv31ZJ/YcPiGccS4DU=
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golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=

‎makefile‎

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.PHONY: all build-linux build-windows clean
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BINARY_NAME=ja3proxy
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BINARY_LINUX=$(BINARY_NAME)
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BINARY_WINDOWS=$(BINARY_NAME).exe
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all: build-linux build-windows
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build-linux:
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GOOS=linux GOARCH=amd64 go build -o $(BINARY_LINUX)
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build-windows:
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GOOS=windows GOARCH=amd64 go build -o $(BINARY_WINDOWS)
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clean:
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rm -f $(BINARY_LINUX) $(BINARY_WINDOWS)

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