/// <summary>
/// Overloaded constructor
/// </summary>
/// <param name="optionNumber">The option number</param>
/// <param name="optionValue">The option value</param>
public CoAPHeaderOption(UInt16 optionNumber, byte[] optionValue)
{
int maxLengthOfOptionValue = this.GetOptionValueMaxLengthInBytes(optionNumber);
int minLengthOfOptionValue = this.GetOptionValueMinLengthInBytes(optionNumber);
int lengthOfOptionValue = (optionValue == null) ? 0 : optionValue.Length;
this.Number = optionNumber;
if (this.IsRecognized())
{
if (lengthOfOptionValue < minLengthOfOptionValue || lengthOfOptionValue > maxLengthOfOptionValue)
{
throw new CoAPFormatException("Invalid length of option value for the given option number " + optionNumber);
}
}
if (this.Number == CoAPHeaderOption.CONTENT_FORMAT)
{
CoAPContentFormatOption contentFormat = new CoAPContentFormatOption(AbstractByteUtils.ToUInt16(optionValue));
if (!contentFormat.IsValid())
{
throw new CoAPFormatException("Content format not supported");
}
}
if (optionValue != null && optionValue.Length > 0)
{
this.Value = new byte[optionValue.Length];
Array.Copy(optionValue, this.Value, optionValue.Length);
this.ValueSizeInBytes = (UInt16)optionValue.Length;
}
}
/// <summary>
/// Set the content format of the payload
/// </summary>
/// <param name="contentFormat">The content format identifier</param>
public void SetContentFormat(CoAPContentFormatOption contentFormat)
{
if (this.Options == null)
{
this.Options = new CoAPHeaderOptions();
}
this.Options.Add(new CoAPHeaderOption(CoAPHeaderOption.CONTENT_FORMAT, contentFormat.GetValueAsBytes()));
}
/// <summary>
/// Convert to a string representation
/// </summary>
/// <returns>string</returns>
public override string ToString()
{
string optionValueAsString = (this.Value != null) ? AbstractByteUtils.ByteToStringUTF8(this.Value) : "";
switch (this.Number)
{
case CoAPHeaderOption.ACCEPT:
return("Accept : " + AbstractByteUtils.ToUInt16(this.Value).ToString());
case CoAPHeaderOption.BLOCK1:
CoAPBlockOption cbo1 = new CoAPBlockOption(this.Value);
return("Block1 : " + cbo1.ToString());
case CoAPHeaderOption.BLOCK2:
CoAPBlockOption cbo2 = new CoAPBlockOption(this.Value);
return("Block2 : " + cbo2.ToString());
case CoAPHeaderOption.CONTENT_FORMAT:
CoAPContentFormatOption ccformat = new CoAPContentFormatOption(AbstractByteUtils.ToUInt16(this.Value));
return("Content-Format : " + ccformat.ToString());
case CoAPHeaderOption.ETAG:
return("ETag : " + optionValueAsString);
case CoAPHeaderOption.IF_MATCH:
return("If-Match : " + optionValueAsString);
case CoAPHeaderOption.IF_NONE_MATCH:
return("If-None-Match : ");
case CoAPHeaderOption.OBSERVE:
return("Observe : " + AbstractByteUtils.ToUInt64(this.Value).ToString()); //We have no data structure for 3-bytes
case CoAPHeaderOption.LOCATION_PATH:
return("Location-Path : " + optionValueAsString);
case CoAPHeaderOption.LOCATION_QUERY:
return("Location-Query : " + optionValueAsString);
case CoAPHeaderOption.MAX_AGE:
return("Max-Age : " + AbstractByteUtils.ToUInt64(this.Value).ToString());
case CoAPHeaderOption.PROXY_SCHEME:
return("Proxy-Scheme : " + optionValueAsString);
case CoAPHeaderOption.PROXY_URI:
return("Proxy-Uri : " + optionValueAsString);
case CoAPHeaderOption.SIZE1:
return("Size1 : " + AbstractByteUtils.ToUInt64(this.Value).ToString());
case CoAPHeaderOption.SIZE2:
return("Size2 : " + AbstractByteUtils.ToUInt64(this.Value).ToString());
case CoAPHeaderOption.URI_HOST:
return("Uri-Host : " + optionValueAsString);
case CoAPHeaderOption.URI_PATH:
return("Uri-Path : " + optionValueAsString);
case CoAPHeaderOption.URI_PORT:
return("Uri-Port : " + AbstractByteUtils.ToUInt16(this.Value));
case CoAPHeaderOption.URI_QUERY:
return("Uri-Query : " + optionValueAsString);
default:
return("Unknown : " + optionValueAsString);
}
}
