Initial commit

main.go

@@ -0,0 +1,57 @@
+package main
+
+import (
+	"io"
+	"log"
+	"net"
+)
+
+func OnConnect(conn net.Conn) (err error) {
+	target, err := net.Dial("tcp", "127.0.0.1:25566")
+	if err != nil {
+		return
+	}
+	errChan := make(chan error)
+	go func() {
+		_, innerErr := io.Copy(target, conn)
+		errChan <- innerErr
+	}()
+	go func() {
+		_, innerErr := io.Copy(conn, target)
+		errChan <- innerErr
+	}()
+	return <-errChan
+}
+
+func OnConnectWrapper(conn net.Conn) {
+	defer conn.Close()
+	err := OnConnect(conn)
+	if err != nil {
+		log.Println("Error: ", err)
+	}
+}
+
+func startListener() (err error) {
+	var l net.Listener
+	l, err = net.Listen("tcp", ":25565")
+	if err != nil {
+		return
+	}
+	defer l.Close()
+	for {
+		var client net.Conn
+		client, err = l.Accept()
+		if err != nil {
+			break
+		}
+		go OnConnectWrapper(client)
+	}
+	return
+}
+
+func main() {
+	err := startListener()
+	if err != nil {
+		panic(err)
+	}
+}