Add Windows 7 builds (#3530)

Co-authored-by: RPRX <63339210+RPRX@users.noreply.github.com>

.github/workflows/release.yml

@@ -78,6 +78,9 @@ jobs:
         # Include amd64 on all platforms.
         goos: [windows, freebsd, openbsd, linux, darwin]
         goarch: [amd64, 386]
+        gotoolchain: [""]
+        patch-assetname: [""]
+
         exclude:
           # Exclude i386 on darwin
           - goarch: 386
@@ -152,6 +155,16 @@ jobs:
             goarch: arm
             goarm: 7
           # END OPENBSD ARM
+          # BEGIN Windows 7
+          - goos: windows
+            goarch: amd64
+            gotoolchain: 1.21.4
+            patch-assetname: win7-64
+          - goos: windows
+            goarch: 386
+            gotoolchain: 1.21.4
+            patch-assetname: win7-32
+          # END Windows 7
       fail-fast: false
 
     runs-on: ubuntu-latest
@@ -164,16 +177,17 @@ jobs:
       - name: Checkout codebase
         uses: actions/checkout@v4
 
-      - name: Show workflow information 
+      - name: Show workflow information
         run: |
-          export _NAME=$(jq ".[\"$GOOS-$GOARCH$GOARM$GOMIPS\"].friendlyName" -r < .github/build/friendly-filenames.json)
+          _NAME=${{ matrix.patch-assetname }}
+          [ -n "$_NAME" ] || _NAME=$(jq ".[\"$GOOS-$GOARCH$GOARM$GOMIPS\"].friendlyName" -r < .github/build/friendly-filenames.json)
           echo "GOOS: $GOOS, GOARCH: $GOARCH, GOARM: $GOARM, GOMIPS: $GOMIPS, RELEASE_NAME: $_NAME"
           echo "ASSET_NAME=$_NAME" >> $GITHUB_ENV
 
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version-file: go.mod
+          go-version: ${{ matrix.gotoolchain || '1.22' }}
           check-latest: true
 
       - name: Get project dependencies

.github/workflows/test.yml

@@ -32,7 +32,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v5
         with:
-          go-version-file: go.mod
+          go-version: '1.22'
           check-latest: true
       - name: Restore Cache
         uses: actions/cache/restore@v4

go.mod

@@ -1,6 +1,6 @@
 module github.com/xtls/xray-core
 
-go 1.22
+go 1.21.4
 
 require (
 	github.com/OmarTariq612/goech v0.0.0-20240405204721-8e2e1dafd3a0