public static TypeACSettings ParseAC(byte[] ies)
{
var informationElements = BuildInformationElements(ies);
var settings = new TypeACSettings();
bool returnNull = true;
foreach (var informationElement in informationElements)
{
switch (informationElement.ItsNumber)
{
case 45: //HT Capabilities
ParseHTCapabilities(informationElement, settings);
returnNull = false;
break;
case 61: //HT Information
ParseHTOperation(informationElement, settings);
returnNull = false;
break;
case 191: //VHT Capabilities
ParseVHTCapabilities(informationElement, settings);
break;
case 192: //VHT Operation
ParseVHTOperation(informationElement, settings);
break;
}
}
return returnNull ? null : settings;
}
public static TypeACSettings ParseAC(byte[] ies)
{
var informationElements = BuildInformationElements(ies);
var settings = new TypeACSettings();
bool returnNull = true;
foreach (var informationElement in informationElements)
{
switch (informationElement.ItsNumber)
{
case 45: //HT Capabilities
ParseHTCapabilities(informationElement, settings);
returnNull = false;
break;
case 61: //HT Information
ParseHTOperation(informationElement, settings);
returnNull = false;
break;
case 191: //VHT Capabilities
ParseVHTCapabilities(informationElement, settings);
break;
case 192: //VHT Operation
ParseVHTOperation(informationElement, settings);
break;
}
}
return(returnNull ? null : settings);
}
private static void ParseVHTCapabilities(InformationElement ie, TypeACSettings settings)
{
settings.Capabilities = new TypeACSettings.VHTCapabilities();
var capabilities = new byte[4];
Array.Copy(ie.ItsData, 0, capabilities, 0, 4);
var supportedMCS = new byte[8];
Array.Copy(ie.ItsData, 4, supportedMCS, 0, 8);
var supportedChannelWidth = (capabilities[0] & 0x0C) >> 2;
switch (supportedChannelWidth)
{
case 1:
settings.Capabilities.Supports160Mhz = true;
break;
case 2:
settings.Capabilities.Supports80Plus80Mhz = true;
settings.Capabilities.Supports160Mhz = true;
break;
}
settings.Capabilities.ShortGi160MHz = (capabilities[0] & 0x40) == 0x40;
settings.Capabilities.ShortGi80MHz = (capabilities[0] & 0x20) == 0x20;
settings.Capabilities.MaxRecieveRate = BitConverter.ToUInt16(supportedMCS, 2);
settings.Capabilities.MaxTransmitRate = BitConverter.ToUInt16(supportedMCS, 6);
}
private static void ParseVHTOperation(InformationElement ie, TypeACSettings settings)
{
settings.Operations = new TypeACSettings.VHTOperations();
var operations = new byte[4];
Array.Copy(ie.ItsData, 0, operations, 0, 3);
var basicMCSSet = new byte[8];
Array.Copy(ie.ItsData, 3, basicMCSSet, 0, 2);
settings.Operations.ChannelWidth =
(TypeACSettings.VHTOperations.VHTChannelWidth)Enum.Parse(
typeof(TypeACSettings.VHTOperations.VHTChannelWidth),
operations[0].ToString(CultureInfo.InvariantCulture)
);
}
private static void ParseVHTCapabilities(InformationElement ie, TypeACSettings settings)
{
settings.Capabilities = new TypeACSettings.VHTCapabilities();
var capabilities = new byte[4];
Array.Copy(ie.ItsData, 0, capabilities, 0, 4);
var supportedMCS = new byte[8];
Array.Copy(ie.ItsData, 4, supportedMCS, 0, 8);
var supportedChannelWidth = ( capabilities[0] & 0x0C ) >> 2;
switch (supportedChannelWidth)
{
case 1:
settings.Capabilities.Supports160Mhz = true;
break;
case 2:
settings.Capabilities.Supports80Plus80Mhz = true;
settings.Capabilities.Supports160Mhz = true;
break;
}
settings.Capabilities. ShortGi160MHz = (capabilities[0] & 0x40) == 0x40;
settings.Capabilities.ShortGi80MHz = (capabilities[0] & 0x20) == 0x20;
settings.Capabilities.MaxRecieveRate = BitConverter.ToUInt16(supportedMCS, 2);
settings.Capabilities.MaxTransmitRate = BitConverter.ToUInt16(supportedMCS, 6);
}
private static void ParseVHTOperation(InformationElement ie, TypeACSettings settings)
{
settings.Operations = new TypeACSettings.VHTOperations();
var operations = new byte[4];
Array.Copy(ie.ItsData, 0, operations, 0, 3);
var basicMCSSet = new byte[8];
Array.Copy(ie.ItsData, 3, basicMCSSet, 0, 2);
settings.Operations.ChannelWidth =
(TypeACSettings.VHTOperations.VHTChannelWidth) Enum.Parse(
typeof(TypeACSettings.VHTOperations.VHTChannelWidth),
operations[0].ToString(CultureInfo.InvariantCulture)
);
}
