func askForGreenLight() bool {
url, err := http.ParseURL(sys.TangraServerURL)
if err != nil {
panic("tangra, bad URL")
}
req := &http.Request{
Method: "GET",
URL: url,
Close: true,
UserAgent: sys.Name + "-Client-Tangra",
}
req.Header = make(map[string]string)
req.Header["Tonika-Build"] = sys.Build
req.Header["Tonika-Released"] = sys.Released
// Connect
conn, err := net.Dial("tcp", "", url.Host)
if err != nil {
if conn != nil {
conn.Close()
}
return true
}
cc := http.NewClientConn(conn, nil)
// Send request
err = cc.Write(req)
if err != nil {
cc.Close()
conn.Close()
return true
}
resp, err := cc.Read()
if err != nil {
cc.Close()
conn.Close()
return true
}
cc.Close()
conn.Close()
if resp.Header == nil {
return true
}
green, ok := resp.Header["Green"]
if !ok {
return true
}
green = strings.TrimSpace(green)
if green == "Halt" {
return false
}
return true
}
func MakeMonitor(dumper json.Marshaler, reportURL string, every int64) *Monitor {
key, err := crypto.ParseCipherMsgPubKey(sys.MonitorPubKey)
if err != nil {
panic("invalid monitor key")
}
mon := &Monitor{dumper, key}
url, err := http.ParseURL(reportURL)
if err != nil {
panic("mon, bad report URL")
}
go mon.report(url, every)
return mon
}