diff --git a/xx-exit.go b/xx-exits.go
similarity index 100%
rename from xx-exit.go
rename to xx-exits.go
diff --git a/xx-signals.go b/xx-signals.go
new file mode 100644
index 0000000..dab0787
--- /dev/null
+++ b/xx-signals.go
@@ -0,0 +1,18 @@
+package main
+
+import ("fmt"; "os"; "os/signal"; "syscall")
+
+func main() {
+	c := make(chan os.Signal, 1)
+	d := make(chan bool, 1)
+
+	signal.Notify(c, syscall.SIGINT)
+	go func(){
+		sig := <- c
+		fmt.Println()
+		fmt.Println(sig)
+		d <- true
+	}()
+	fmt.Println("Awaiting signal")
+	<- d
+}
diff --git a/xx-tcp-server.go b/xx-tcp-server.go
new file mode 100644
index 0000000..530c57c
--- /dev/null
+++ b/xx-tcp-server.go
@@ -0,0 +1,49 @@
+package main
+
+package main
+
+import (
+    "encoding/gob"
+    "fmt"
+    "net"
+)
+
+func server() {
+    // listen on a port
+    ln, err := net.Listen("tcp", ":9999")
+    if err != nil {
+        fmt.Println(err)
+        return
+    }
+    for {
+        // accept a connection
+        c, err := ln.Accept()
+        if err != nil {
+            fmt.Println(err)
+            continue
+        }
+        // handle the connection
+        go handleServerConnection(c)
+    }
+}
+
+func handleServerConnection(c net.Conn) {
+    // receive the message
+    var msg string
+    err := gob.NewDecoder(c).Decode(&msg)
+    if err != nil {
+        fmt.Println(err)
+    } else {
+        fmt.Println("Received", msg)
+    }
+    
+    c.Close()
+}
+
+func main() {
+    go server()
+    go client()
+    
+    var input string
+    fmt.Scanln(&input)
+}
\ No newline at end of file