add cmd/q3rcon-proxy

cmd/q3rcon-proxy/main.go

@@ -0,0 +1,39 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"strings"
+
+	"github.com/onyx-and-iris/q3rcon-proxy/pkg/udpproxy"
+)
+
+func start(proxy string) {
+	port, target := func() (string, string) {
+		x := strings.Split(proxy, ":")
+		return x[0], x[1]
+	}()
+
+	c, err := udpproxy.New(fmt.Sprintf("0.0.0.0:%s", port), fmt.Sprintf("127.0.0.1:%s", target))
+	if err != nil {
+		log.Fatal(err)
+	}
+
+	log.Printf("q3rcon-proxy initialized: [proxy] (0.0.0.0:%s) [target] (127.0.0.1:%s)", port, target)
+
+	log.Fatal(c.ListenAndServe())
+}
+
+func main() {
+	proxies := os.Getenv("Q3RCON_PROXY")
+	if proxies == "" {
+		log.Fatal("env Q3RCON_PROXY required")
+	}
+
+	for _, proxy := range strings.Split(proxies, ";") {
+		go start(proxy)
+	}
+
+	<-make(chan int)
+}