API to get IP address and some simple info
| path | Content-Type | response |
|---|---|---|
| /, /ip | text/plain | ip address |
| /hostname, /host | text/plain | hostname |
| /all, /a | text/plain | all data |
| /json, /json/ip | application/json | ip address |
| /json/hostname, /json/host | application/json | hostname |
| /json/all, /json/a | application/json | all data |