1.11 Server Discovery
2N® NetSpeaker Server discovery
Every 2N® NetSpeaker Server listens on UDP port 6995 for discovery requests.
2N® NetSpeaker Control Panel periodically searches for active servers (in local network) by broadcasting UDP packet on this port with the following content:
| Hex offset | Hex data | ASCII data |
|---|---|---|
| 0000 | 4d 61 67 69 63 57 6f 72 64 3d 66 30 34 34 36 61 | MagicWord=f0446a |
| 0010 | 61 61 37 35 62 37 38 36 37 61 62 35 62 62 66 32 | aa75b7867ab5bbf2 |
| 0020 | 34 30 62 35 37 64 66 62 66 36 3b 0a 43 6d 64 3d | 40b57dfbf6;.Cmd= |
| 0030 | 45 6e 75 6d 53 72 76 3b 0a 00 | EnumSrv;.. |
This content is constant. If changed, the Server will not respond.
All Servers respond (provided MagicWord and Cmd match) by UDP packet with the following content:
| Hex offset | Hex data | ASCII data |
|---|---|---|
| 0000 | 4d 61 67 69 63 57 6f 72 64 3d 66 30 34 34 36 61 | MagicWord=f0446a |
| 0010 | 61 61 37 35 62 37 38 36 37 61 62 35 62 62 66 32 | aa75b7867ab5bbf2 |
| 0020 | 34 30 62 35 37 64 66 62 66 36 3b 0a 43 6d 64 3d | 40b57dfbf6;.Cmd= |
| 0030 | 53 72 76 49 6e 66 6f 3b 0a 00 | SrvInfo;.. |
All responses within certain time interval are considered active. IP address of the responding Server can be taken from IP header.
ToDo: Servers could send details about running services and allocated ports (e.g. XML API on 6543).