| Field name |
Length
(bytes) |
Description |
| Data Length |
2 |
The length of the packet body that follows the header |
| Source Data Length |
2 |
The original length of the packet body that follows the header (without compression). If no compression is being used, the value of this field is equal to the value of the previous field. |
| Version |
1 |
Packet format version (0 for the current implementation) |
| Year |
2 |
Packet date (year) |
| Month |
1 |
Packet date (month) |
| Day |
1 |
Packet date (day) |
| Hours |
1 |
Packet time (hours) |
| Minutes |
1 |
Packet time (minutes) |
| Seconds |
1 |
Packet time (seconds) |
| Microseconds |
4 |
Packet time (microseconds) |
| Flags |
1 |
Bit flags:
| Medium |
0...3 |
Medium type for the packet (0 - Ethernet, 1 - WiFi, 2 - Token Ring) |
| Decrypted |
4 |
The packet has been decrypted (applicable to WiFi packets only) |
| Broken |
5 |
The packet was corrupted, i.e. had the incorrect CRC value (applicable to WiFi packets only) |
| Compressed |
6 |
The packet is stored in compressed form |
| Reserved |
7 |
Reserved |
|
| Signal Level |
1 |
Signal level in percents (applicable to WiFi packets only) |
| Rate |
1 |
Data transmission rate in Mbps multiplied by 2 (applicable to WiFi packets only) |
| Band |
1 |
Transmission band. 0x01 for 802.11a, 0x02 for 802.11b, 0x04 for 802.11g, 0x08 for 802.11a-turbo, 0x10 for 802.11 SuperG, 0x20 for 4.9 GHz Public Safety, 0x40 for 5 GHz 802.11n, 0x80 for 2.4 GHz 802.11n.(applicable to WiFi packets only) |
| Channel |
1 |
Channel number (applicable to WiFi packets only) |
| Direction |
1 |
For non-WiFi packets, packet direction. 0x00 for pass-through, 0x01 for inbound, 0x02 for outbound. For WiFi packets, the high order byte for the packet rate, if the one-byte Rate field cannot accommodate the value (i.e. the value is higher than 255). |
| Signal Level (dBm) |
1 |
Signal level in dBm (applicable to WiFi packets only) |
| Noise Level (dBm) |
1 |
Noise level in dBm (applicable to WiFi packets only) |
| Data |
... |
Packet body (unmodified, as transmitted over the media). If the compression flag is set, the data is compressed using the publicly available Zlib 1.1.4 library. The length of this field is recorded in Data Length. |
