Add tpingd.go - tcp pinger

tpingd.go

@@ -0,0 +1,57 @@
+package main
+// vim: set ft=go noet ai ts=4 sw=4 sts=4:
+
+import (
+	"fmt"
+	"net"
+	"time"
+	"net/http"
+)
+
+var result = false
+
+func mycheck() {
+	for true {
+		conn, e := net.DialTimeout("tcp", "jenkins:443", 3000 * time.Millisecond)
+
+		if e != nil {
+			result = false
+		} else {
+			conn.Close()
+			result = true
+		}
+
+		time.Sleep(5 * time.Second)
+	}
+}
+
+// create a handler struct
+type HttpHandler struct{}
+
+// implement `ServeHTTP` method on `HttpHandler` struct
+func (h HttpHandler) ServeHTTP(res http.ResponseWriter, req *http.Request) {
+	// create response binary data
+	data := []byte("Unreachable\n") // slice of bytes
+
+	if result {
+		data = []byte("Reachable\n")
+	}
+
+	// write data to response
+	res.Write(data)
+}
+
+
+func main() {
+	// spawn goroutine, it "backgrounds" automatically
+	go mycheck()
+
+	// create a new handler
+	handler := HttpHandler{}
+	// listen and serve
+	e := http.ListenAndServe("127.0.0.1:9000", handler)
+
+	if e != nil {
+		fmt.Println(e)
+	}
+}