/// <summary>
/// Attempts to parse raw data into a structured packet
/// </summary>
/// <param name="buffer">Raw data to parse</param>
/// <param name="packet">Parsed packet</param>
/// <param name="count">The length of the packet in bytes</param>
/// <param name="index">The index into the buffer at which the packet begins</param>
/// <returns>True if parsing was successful, false if it is not.</returns>
internal static bool TryParse(byte[] buffer, int index, int count, out MSMon802_11 packet)
{
try
{
if (count < MinimumParseableBytes)
{
packet = null;
return(false);
}
using (var ms = new MemoryStream(buffer, index, count, false))
{
using (var br = new BinaryReader(ms))
{
var version = br.ReadByte();
var length = br.ReadUInt16();
var opMode = br.ReadUInt32();
var receiveFlags = br.ReadUInt32();
var phyID = br.ReadUInt32();
var chCenterFrequency = br.ReadUInt32();
var RSSI = br.ReadInt32();
var dataRate = br.ReadByte();
var timestamp = br.ReadUInt64();
packet = null;
// TODO: Consider parsed length
IEEE802_11 payload80211;
if (IEEE802_11.TryParse(
buffer,
index + (int)br.BaseStream.Position,
(int)(count - br.BaseStream.Position),
out payload80211))
{
packet = new MSMon802_11 <IEEE802_11> {
Payload = payload80211
};
}
if (packet == null)
{
Generic payload;
Generic.TryParse(
buffer,
index + (int)br.BaseStream.Position,
(int)(count - br.BaseStream.Position),
out payload);
// This can never fail, so I'm not checking the output
packet = new MSMon802_11 <Generic> {
Payload = payload
};
}
packet.Version = version;
packet.LengthMS = length;
packet.OpMode = opMode;
packet.ReceiveFlags = receiveFlags;
packet.PhyID = phyID;
packet.CenterFrequency = chCenterFrequency;
packet.RSSI = RSSI;
packet.DataRate = dataRate;
packet.Timestamp = timestamp;
return(true);
}
}
}
catch (Exception)
{
packet = null;
return(false);
}
}
/// <summary>
/// Attempts to parse raw data into a structured packet
/// </summary>
/// <param name="buffer">Raw data to parse</param>
/// <param name="packet">Parsed packet</param>
/// <param name="count">The length of the packet in bytes</param>
/// <param name="index">The index into the buffer at which the packet begins</param>
/// <returns>True if parsing was successful, false if it is not.</returns>
internal static bool TryParse(byte[] buffer, int index, int count, out MSMon802_11 packet)
{
try
{
if (count < MinimumParseableBytes)
{
packet = null;
return false;
}
using (var ms = new MemoryStream(buffer, index, count, false))
{
using (var br = new BinaryReader(ms))
{
var version = br.ReadByte();
var length = br.ReadUInt16();
var opMode = br.ReadUInt32();
var receiveFlags = br.ReadUInt32();
var phyID = br.ReadUInt32();
var chCenterFrequency = br.ReadUInt32();
var RSSI = br.ReadInt32();
var dataRate = br.ReadByte();
var timestamp = br.ReadUInt64();
packet = null;
// TODO: Consider parsed length
IEEE802_11 payload80211;
if (IEEE802_11.TryParse(
buffer,
index + (int)br.BaseStream.Position,
(int)(count - br.BaseStream.Position),
out payload80211))
{
packet = new MSMon802_11<IEEE802_11> { Payload = payload80211 };
}
if (packet == null)
{
Generic payload;
Generic.TryParse(
buffer,
index + (int)br.BaseStream.Position,
(int)(count - br.BaseStream.Position),
out payload);
// This can never fail, so I'm not checking the output
packet = new MSMon802_11<Generic> { Payload = payload };
}
packet.Version = version;
packet.LengthMS = length;
packet.OpMode = opMode;
packet.ReceiveFlags = receiveFlags;
packet.PhyID = phyID;
packet.CenterFrequency = chCenterFrequency;
packet.RSSI = RSSI;
packet.DataRate = dataRate;
packet.Timestamp = timestamp;
return true;
}
}
}
catch (Exception)
{
packet = null;
return false;
}
}