Test presence of responder on a given interface
(inf net.Interface)
| 127 | |
| 128 | // Test presence of responder on a given interface |
| 129 | func checkResponderOnInterface(inf net.Interface) map[string]string { |
| 130 | var json map[string]string |
| 131 | addrs, _ := inf.Addrs() |
| 132 | logger.Printf("List of all addresses on interface [%s]: %+v\n", |
| 133 | inf.Name, addrs) |
| 134 | ip := getValidIPv4Addr(addrs) |
| 135 | logger.Printf("Bind IP address for interface %+v is %+v\n", |
| 136 | inf.Name, ip) |
| 137 | |
| 138 | if ip != nil { |
| 139 | fmt.Fprintf(outFile, "%-10s Sending probe from %s...\t", |
| 140 | "["+inf.Name+"]", ip) |
| 141 | responderIP := sendLLMNRProbe(ip) |
| 142 | if responderIP != "" { |
| 143 | fmt.Fprintf(outFile, "responder detected at %s\n", responderIP) |
| 144 | json = map[string]string{ |
| 145 | "interface": inf.Name, |
| 146 | "sourceIP": ip.String(), |
| 147 | "responderIP": responderIP, |
| 148 | } |
| 149 | } else { |
| 150 | fmt.Fprintln(outFile, "responder not detected") |
| 151 | } |
| 152 | } |
| 153 | return json |
| 154 | } |
| 155 | |
| 156 | // Creates and sends a LLMNR request to the UDP multicast address. |
| 157 | func sendLLMNRProbe(ip net.IP) string { |
no test coverage detected