fix: connection address resolution

.gitea/workflows/release-tag.yml

@@ -16,6 +16,7 @@ jobs:
         uses: https://github.com/actions/setup-go@v4
         with:
           go-version: '>=1.20.1'
+          cache: false
       - name: release-build
         run: go build -ldflags="-s -w -X 'main.Version=${{  github.ref_name }}'" -o bin/honeyspot-${{  github.ref_name }}-linux-amd64
       - name: release-build-windows

main.go

@@ -409,7 +409,13 @@ func listen(addr string) {
 		}
 
 		// check is ip
-		ip := net.ParseIP(remoteAddr.String())
+		remoteAddrStr := remoteAddr.String()
+		// remove port with IPv6 support
+		if strings.Contains(remoteAddrStr, ":") {
+			remoteAddrStr = remoteAddrStr[:strings.LastIndex(remoteAddrStr, ":")]
+		}
+
+		ip := net.ParseIP(remoteAddrStr)
 		if ip == nil {
 			log.Warnf("Got request from non-IP %s, ignoring request", remoteAddr)
 			_ = conn.Close()