public async Task <Response> GetResponseAsync()
{
try
{
Response response = await _taskCompletionSource.Task;
if (response == null)
{
throw new TradfriException("Failed getting response from gateway.");
}
CoapCode coapCode = (CoapCode)response.Code;
switch (coapCode)
{
case CoapCode.Created:
case CoapCode.Deleted:
case CoapCode.Valid:
case CoapCode.Changed:
case CoapCode.Content:
return(response);
}
throw new TradfriException("Non-successful response from gateway.", coapCode);
}
catch (TradfriException)
{
throw;
}
catch (Exception exception)
{
throw new TradfriException("Internal error communicating with the gateway.", exception);
}
}
/// <summary>
/// Returns an acknowledgement.
/// </summary>
/// <param name="Code">CoAP message code.</param>
public void ACK(CoapCode Code)
{
this.responded = true;
this.endpoint.Transmit(this.client, this.message.From, this.client.IsEncrypted,
this.message.MessageId, CoapMessageType.ACK, Code,
Code == CoapCode.EmptyMessage ? (ulong?)null : this.message.Token, false, null, 0, 64, this.resource, null, null, null, null);
}
/// <summary>
/// Returns a reset message.
/// </summary>
/// <param name="Code">CoAP mesasge code.</param>
public void RST(CoapCode Code)
{
this.responded = true;
this.endpoint.Transmit(this.client, this.remoteEndpoint, this.client.IsEncrypted,
this.request.MessageId, CoapMessageType.RST, Code,
Code == CoapCode.EmptyMessage ? (ulong?)null : this.request.Token, false, null, 0, 64,
this.resource, null, null, null, null);
}
public CoapMessage(Int32 version, CoapType type, CoapCode code, Int32 messageID, byte[] token, List <CoapOption> options, byte[] payload)
{
this._version = version;
this._type = type;
this._code = code;
this._messageID = messageID;
this._token = token;
this._options = options;
this._payload = payload;
}
/// <summary>
/// Returns a response to the caller.
/// </summary>
/// <param name="Code">CoAP message code.</param>
/// <param name="Payload">Optional payload.</param>
/// <param name="Block2Nr">Block index to transmit.</param>
/// <param name="BlockSize">Block size, in case the <paramref name="Payload"/> needs to be divided into blocks.</param>
/// <param name="Options">Optional options.</param>
internal void Respond(CoapCode Code, byte[] Payload, int Block2Nr, int BlockSize,
params CoapOption[] Options)
{
this.endpoint.Transmit(this.client, this.remoteEndpoint, this.client.IsEncrypted,
this.responded ? (ushort?)null : this.request.MessageId,
this.ResponseType, Code, this.request.Token, false, Payload, Block2Nr, BlockSize,
this.resource, null, null, null, null, CoapEndpoint.Merge(Options, this.additionalResponseOptions));
this.responded = true;
}
internal CoapMessage(CoapMessageType Type, CoapCode Code, ushort MessageId, ulong Token, CoapOption[] Options, byte[] Payload,
IPEndPoint From)
{
this.type = Type;
this.code = Code;
this.messageId = MessageId;
this.token = Token;
this.options = Options;
this.payload = Payload;
this.from = From;
}
/// <summary>
/// Returns a response to the caller.
/// </summary>
/// <param name="Code">CoAP message code.</param>
/// <param name="Payload">Optional payload to be encoded.</param>
/// <param name="BlockSize">Block size, in case the <paramref name="Payload"/> needs to be divided into blocks.</param>
/// <param name="Options">Optional options.</param>
public void Respond(CoapCode Code, object Payload, int BlockSize, params CoapOption[] Options)
{
byte[] Data = CoapEndpoint.Encode(Payload, out int ContentFormat);
if (!CoapEndpoint.HasOption(Options, 12))
{
Options = CoapEndpoint.Merge(Options, new CoapOptionContentFormat((ulong)ContentFormat));
}
this.Respond(Code, Data, BlockSize, Options);
}
/// <summary>
/// Returns a reset message.
/// </summary>
/// <param name="Code">CoAP message code.</param>
public void RST(CoapCode Code)
{
if (this.message.Type == CoapMessageType.ACK || this.message.Type == CoapMessageType.RST)
{
throw new IOException("You cannot respond to ACK or RST messages.");
}
this.responded = true;
this.endpoint.Transmit(this.client, this.message.From, this.client.IsEncrypted,
this.message.MessageId, CoapMessageType.RST, Code,
Code == CoapCode.EmptyMessage ? (ulong?)null : this.message.Token, false, null, 0, 64, this.resource, null, null, null, null);
}
public static string GetDisplayName(this CoapCode coapCode)
{
switch (coapCode)
{
case CoapCode.Created: return("2.01 Created");
case CoapCode.Deleted: return("2.02 Deleted");
case CoapCode.Valid: return("2.03 Valid");
case CoapCode.Changed: return("2.04 Changed");
case CoapCode.Content: return("2.05 Content");
case CoapCode.BadRequest: return("4.00 Bad Request");
case CoapCode.Unauthorized: return("4.01 Unauthorized");
case CoapCode.BadOption: return("4.02 Bad Option");
case CoapCode.Forbidden: return("4.03 Forbidden");
case CoapCode.NotFound: return("4.04 Not Found");
case CoapCode.MethodNotAllowed: return("4.05 Method Not Allowed");
case CoapCode.NotAcceptable: return("4.06 Not Acceptable");
case CoapCode.PreconditionFailed: return("4.12 Precondition Failed");
case CoapCode.RequestEntityTooLarge: return("4.13 Request Entity Too Large");
case CoapCode.UnsupportedContentFormat: return("4.15 Unsupported Content-Format");
case CoapCode.InternalServerError: return("5.00 Internal Server Error");
case CoapCode.NotImplemented: return("5.01 Not Implemented");
case CoapCode.BadGateway: return("5.02 Bad Gateway");
case CoapCode.ServiceUnavailable: return("5.03 Service Unavailable");
case CoapCode.GatewayTimeout: return("5.04 Gateway Timeout");
case CoapCode.ProxyingNotSupported: return("Proxying Not Supported");
default:
throw new ArgumentOutOfRangeException(nameof(coapCode), coapCode, null);
}
}
/// <summary>
/// Returns a response to the caller.
/// </summary>
/// <param name="Code">CoAP message code.</param>
/// <param name="Payload">Optional payload.</param>
/// <param name="BlockSize">Block size, in case the <paramref name="Payload"/> needs to be divided into blocks.</param>
/// <param name="Options">Optional options.</param>
public void Respond(CoapCode Code, byte[] Payload, int BlockSize, params CoapOption[] Options)
{
if (this.message.Type == CoapMessageType.ACK || this.message.Type == CoapMessageType.RST)
{
throw new IOException("You cannot respond to ACK or RST messages.");
}
int BlockNr = this.message.Block2 != null ? this.message.Block2.Number : 0;
this.endpoint.Transmit(this.client, this.message.From, this.client.IsEncrypted,
this.responded ? (ushort?)null : this.message.MessageId,
this.responded ? this.message.Type : CoapMessageType.ACK, Code,
this.message.Token, false, Payload, BlockNr, BlockSize, this.resource, null, null, null, null, Options);
this.responded = true;
}
public TradfriException(string message, CoapCode coapCode, Exception innerException)
: base(message, innerException)
{
CoapCode = coapCode;
}
public TradfriException(string message, CoapCode coapCode)
: base(message)
{
CoapCode = coapCode;
}
/// <summary>
/// Returns a response to the caller.
/// </summary>
/// <param name="Code">CoAP message code.</param>
/// <param name="Payload">Optional payload.</param>
/// <param name="BlockSize">Block size, in case the <paramref name="Payload"/> needs to be divided into blocks.</param>
/// <param name="Options">Optional options.</param>
public void Respond(CoapCode Code, byte[] Payload, int BlockSize, params CoapOption[] Options)
{
int BlockNr = this.request.Block2 != null ? this.request.Block2.Number : 0;
this.Respond(Code, Payload, BlockNr, BlockSize, Options);
}
/// <summary>
/// Returns a response to the caller.
/// </summary>
/// <param name="Code">CoAP message code.</param>
/// <param name="Options">Optional options.</param>
public void Respond(CoapCode Code, params CoapOption[] Options)
{
this.Respond(Code, null, 64, Options);
}
/// <summary>
/// CoAP Exception
/// </summary>
/// <param name="ErrorCode">Error code.</param>
public CoapException(CoapCode ErrorCode)
: base("CoAP Exception: " + ErrorCode.ToString())
{
this.errorCode = ErrorCode;
}
public static CoapMessage decode(IByteBuffer buf)
{
byte firstByte = buf.ReadByte();
int version = firstByte >> 6;
if (version != 1)
{
throw new ArgumentException("Invalid version:" + version);
}
int typeValue = (firstByte >> 4) & 2;
CoapType type = (CoapType)typeValue;
int tokenLength = firstByte & 0xf;
if (tokenLength < 0 || tokenLength > 8)
{
throw new ArgumentException("Invalid token length:" + tokenLength);
}
int codeByte = buf.ReadByte();
int codeValue = (codeByte >> 5) * 100;
codeValue += codeByte & 0x1F;
CoapCode code = (CoapCode)codeValue;
int messageID = buf.ReadShort();
if (messageID < 0 || messageID > 65535)
{
throw new ArgumentException("Invalid messageID value:" + messageID);
}
byte[] token = new byte[tokenLength];
if (tokenLength > 0)
{
buf.ReadBytes(token, 0, tokenLength);
}
int number = 0;
List <CoapOption> options = new List <CoapOption>();
while (buf.IsReadable())
{
byte nextByte = buf.ReadByte();
if (nextByte == 0xFF)
{
break;
}
int delta = ((nextByte >> 4) & 15);
if (delta == 13)
{
delta = (delta << 8 | buf.ReadByte()) - 13;
}
else if (delta == 14)
{
delta = (delta << 16 | buf.ReadByte() << 8 | buf.ReadByte()) - 269;
}
else if (delta < 0 || delta > 14)
{
throw new ArgumentException("invalid option delta value:" + delta);
}
number += delta;
if (number < 0)
{
throw new ArgumentException("invalid negative option number:" + number + ", delta:" + delta);
}
int optionLength = nextByte & 15;
if (optionLength == 13)
{
optionLength = buf.ReadByte() + 13;
}
else if (optionLength == 14)
{
optionLength = buf.ReadByte() + 269;
}
else if (optionLength < 0 || optionLength > 14)
{
throw new ArgumentException("invalid option length");
}
byte[] optionValue = new byte[optionLength];
if (optionLength > 0)
{
buf.ReadBytes(optionValue, 0, optionLength);
}
options.Add(new CoapOption(number, optionLength, optionValue));
}
byte[] payload = null;
if (buf.IsReadable())
{
payload = new byte[buf.ReadableBytes];
buf.ReadBytes(payload);
}
return(new CoapMessage(version, type, code, messageID, token, options, payload));
}
