/// <summary>
/// Parse bytes for a UNSUBACK message
/// </summary>
/// <param name="fixedHeaderFirstByte">First fixed header byte</param>
/// <param name="channel">Channel connected to the broker</param>
/// <returns>UNSUBACK message instance</returns>
public static MqttMsgUnsuback Parse(byte fixedHeaderFirstByte, IMqttNetworkChannel channel)
{
byte[] buffer;
int index = 0;
MqttMsgUnsuback msg = new MqttMsgUnsuback();
// get remaining length and allocate buffer
int remainingLength = MqttMsgBase.decodeRemainingLength(channel);
buffer = new byte[remainingLength];
// read bytes from socket...
channel.Receive(buffer);
// message id
msg.messageId = (ushort)((buffer[index++] << 8) & 0xFF00);
msg.messageId |= (buffer[index++]);
return(msg);
}
/// <summary>
/// Parse bytes for a PUBREC message
/// </summary>
/// <param name="fixedHeaderFirstByte">First fixed header byte</param>
/// <param name="socket">Socket connected to the broker</param>
/// <returns>PUBREC message instance</returns>
public static MqttMsgPubrec Parse(byte fixedHeaderFirstByte, Socket socket)
{
byte[] buffer;
int index = 0;
MqttMsgPubrec msg = new MqttMsgPubrec();
// get remaining length and allocate buffer
int remainingLength = MqttMsgBase.decodeRemainingLength(socket);
buffer = new byte[remainingLength];
// read bytes from socket...
socket.Receive(buffer);
// message id
msg.messageId = (ushort)((buffer[index++] << 8) & 0xFF00);
msg.messageId |= (buffer[index++]);
return(msg);
}
public static MqttMsgSuback Parse(byte fixedHeaderFirstByte, byte protocolVersion, IMqttNetworkChannel channel)
{
int num1 = 0;
MqttMsgSuback mqttMsgSuback1 = new MqttMsgSuback();
if (protocolVersion == (byte)4 && ((uint)fixedHeaderFirstByte & 15U) > 0U)
{
throw new MqttClientException(MqttClientErrorCode.InvalidFlagBits);
}
int length = MqttMsgBase.decodeRemainingLength(channel);
byte[] buffer = new byte[length];
channel.Receive(buffer);
MqttMsgSuback mqttMsgSuback2 = mqttMsgSuback1;
byte[] numArray1 = buffer;
int index1 = num1;
int num2 = checked (index1 + 1);
int num3 = (int)checked ((ushort)((int)numArray1[index1] << 8 & 65280));
mqttMsgSuback2.messageId = (ushort)num3;
MqttMsgSuback mqttMsgSuback3 = mqttMsgSuback1;
int messageId = (int)mqttMsgSuback3.messageId;
byte[] numArray2 = buffer;
int index2 = num2;
int num4 = checked (index2 + 1);
int num5 = (int)numArray2[index2];
mqttMsgSuback3.messageId = (ushort)(messageId | num5);
mqttMsgSuback1.grantedQosLevels = new byte[checked (length - 2)];
int num6 = 0;
do
{
mqttMsgSuback1.grantedQosLevels[checked (num6++)] = buffer[checked (num4++)];
}while (num4 < length);
return(mqttMsgSuback1);
}
/// <summary>
/// Parse bytes for a PUBREL message
/// </summary>
/// <param name="fixedHeaderFirstByte">First fixed header byte</param>
/// <param name="protocolVersion">Protocol Version</param>
/// <param name="channel">Channel connected to the broker</param>
/// <returns>PUBREL message instance</returns>
public static MqttMsgPubrel Parse(byte fixedHeaderFirstByte, byte protocolVersion, IMqttNetworkChannel channel)
{
byte[] buffer;
int index = 0;
MqttMsgPubrel msg = new MqttMsgPubrel();
if (protocolVersion == MqttMsgConnect.PROTOCOL_VERSION_V3_1_1)
{
// [v3.1.1] check flag bits
if ((fixedHeaderFirstByte & MSG_FLAG_BITS_MASK) != MQTT_MSG_PUBREL_FLAG_BITS)
{
throw new MqttClientException(MqttClientErrorCode.InvalidFlagBits);
}
}
// get remaining length and allocate buffer
int remainingLength = MqttMsgBase.decodeRemainingLength(channel);
buffer = new byte[remainingLength];
// read bytes from socket...
channel.Receive(buffer);
if (protocolVersion == MqttMsgConnect.PROTOCOL_VERSION_V3_1)
{
// only 3.1.0
// read QoS level from fixed header (would be QoS Level 1)
msg.qosLevel = (byte)((fixedHeaderFirstByte & QOS_LEVEL_MASK) >> QOS_LEVEL_OFFSET);
// read DUP flag from fixed header
msg.dupFlag = (((fixedHeaderFirstByte & DUP_FLAG_MASK) >> DUP_FLAG_OFFSET) == 0x01);
}
// message id
msg.messageId = (ushort)((buffer[index++] << 8) & 0xFF00);
msg.messageId |= (buffer[index++]);
return(msg);
}
/// <summary>
/// Parse bytes for a SUBACK message
/// </summary>
/// <param name="fixedHeaderFirstByte">First fixed header byte</param>
/// <param name="protocolVersion">Protocol Version</param>
/// <param name="channel">Channel connected to the broker</param>
/// <returns>SUBACK message instance</returns>
public static MqttMsgSuback Parse(byte fixedHeaderFirstByte, byte protocolVersion, IMqttNetworkChannel channel)
{
byte[] buffer;
int index = 0;
MqttMsgSuback msg = new MqttMsgSuback();
if (protocolVersion == MqttMsgConnect.PROTOCOL_VERSION_V3_1_1)
{
// [v3.1.1] check flag bits
if ((fixedHeaderFirstByte & MSG_FLAG_BITS_MASK) != MQTT_MSG_SUBACK_FLAG_BITS)
{
throw new MqttClientException(MqttClientErrorCode.InvalidFlagBits);
}
}
// get remaining length and allocate buffer
int remainingLength = MqttMsgBase.decodeRemainingLength(channel);
buffer = new byte[remainingLength];
// read bytes from socket...
channel.Receive(buffer);
// message id
msg.messageId = (ushort)((buffer[index++] << 8) & 0xFF00);
msg.messageId |= (buffer[index++]);
// payload contains QoS levels granted
msg.grantedQosLevels = new byte[remainingLength - MESSAGE_ID_SIZE];
int qosIdx = 0;
do
{
msg.grantedQosLevels[qosIdx++] = buffer[index++];
} while (index < remainingLength);
return(msg);
}
/// <summary>
/// Parse bytes for a DISCONNECT message
/// </summary>
/// <param name="fixedHeaderFirstByte">First fixed header byte</param>
/// <param name="protocolVersion">Protocol Version</param>
/// <param name="channel">Channel connected to the broker</param>
/// <returns>DISCONNECT message instance</returns>
public static MqttMsgDisconnect Parse(byte fixedHeaderFirstByte, byte protocolVersion, IMqttNetworkChannel channel)
{
MqttMsgDisconnect msg = new MqttMsgDisconnect();
if (protocolVersion == MqttMsgConnect.PROTOCOL_VERSION_V3_1_1)
{
// [v3.1.1] check flag bits
if ((fixedHeaderFirstByte & MSG_FLAG_BITS_MASK) != MQTT_MSG_DISCONNECT_FLAG_BITS)
{
throw new MqttClientException(MqttClientErrorCode.InvalidFlagBits);
}
}
// get remaining length and allocate buffer
int remainingLength = MqttMsgBase.decodeRemainingLength(channel);
// NOTE : remainingLength must be 0
if (remainingLength > 0)
{
// error
}
return(msg);
}
/// <summary>
/// Parse bytes for a PUBLISH message
/// </summary>
/// <param name="fixedHeaderFirstByte">First fixed header byte</param>
/// <param name="channel">Channel connected to the broker</param>
/// <returns>PUBLISH message instance</returns>
public static MqttMsgPublish Parse(byte fixedHeaderFirstByte, IMqttNetworkChannel channel)
{
byte[] buffer;
int index = 0;
byte[] topicUtf8;
int topicUtf8Length;
MqttMsgPublish msg = new MqttMsgPublish();
// get remaining length and allocate buffer
int remainingLength = MqttMsgBase.decodeRemainingLength(channel);
buffer = new byte[remainingLength];
// read bytes from socket...
int received = channel.Receive(buffer);
// topic name
topicUtf8Length = ((buffer[index++] << 8) & 0xFF00);
topicUtf8Length |= buffer[index++];
topicUtf8 = new byte[topicUtf8Length];
Array.Copy(buffer, index, topicUtf8, 0, topicUtf8Length);
index += topicUtf8Length;
msg.topic = new String(Encoding.UTF8.GetChars(topicUtf8));
// read QoS level from fixed header
msg.qosLevel = (byte)((fixedHeaderFirstByte & QOS_LEVEL_MASK) >> QOS_LEVEL_OFFSET);
// read DUP flag from fixed header
msg.dupFlag = (((fixedHeaderFirstByte & DUP_FLAG_MASK) >> DUP_FLAG_OFFSET) == 0x01);
// read retain flag from fixed header
msg.retain = (((fixedHeaderFirstByte & RETAIN_FLAG_MASK) >> RETAIN_FLAG_OFFSET) == 0x01);
// message id is valid only with QOS level 1 or QOS level 2
if ((msg.qosLevel == QOS_LEVEL_AT_LEAST_ONCE) ||
(msg.qosLevel == QOS_LEVEL_EXACTLY_ONCE))
{
// message id
msg.messageId = (ushort)((buffer[index++] << 8) & 0xFF00);
msg.messageId |= (buffer[index++]);
}
// get payload with message data
int messageSize = remainingLength - index;
int remaining = messageSize;
int messageOffset = 0;
msg.message = new byte[messageSize];
// BUG FIX 26/07/2013 : receiving large payload
// copy first part of payload data received
Array.Copy(buffer, index, msg.message, messageOffset, received - index);
remaining -= (received - index);
messageOffset += (received - index);
// if payload isn't finished
while (remaining > 0)
{
// receive other payload data
received = channel.Receive(buffer);
Array.Copy(buffer, 0, msg.message, messageOffset, received);
remaining -= received;
messageOffset += received;
}
return(msg);
}
public static MqttMsgSubscribe Parse(byte fixedHeaderFirstByte, byte protocolVersion, IMqttNetworkChannel channel)
{
int num1 = 0;
MqttMsgSubscribe mqttMsgSubscribe1 = new MqttMsgSubscribe();
if (protocolVersion == (byte)4 && ((int)fixedHeaderFirstByte & 15) != 2)
{
throw new MqttClientException(MqttClientErrorCode.InvalidFlagBits);
}
int length1 = MqttMsgBase.decodeRemainingLength(channel);
byte[] buffer = new byte[length1];
channel.Receive(buffer);
if (protocolVersion == (byte)3)
{
mqttMsgSubscribe1.qosLevel = checked ((byte)(((int)fixedHeaderFirstByte & 6) >> 1));
mqttMsgSubscribe1.dupFlag = ((int)fixedHeaderFirstByte & 8) >> 3 == 1;
mqttMsgSubscribe1.retain = false;
}
MqttMsgSubscribe mqttMsgSubscribe2 = mqttMsgSubscribe1;
byte[] numArray1 = buffer;
int index1 = num1;
int num2 = checked (index1 + 1);
int num3 = (int)checked ((ushort)((int)numArray1[index1] << 8 & 65280));
mqttMsgSubscribe2.messageId = (ushort)num3;
MqttMsgSubscribe mqttMsgSubscribe3 = mqttMsgSubscribe1;
int messageId = (int)mqttMsgSubscribe3.messageId;
byte[] numArray2 = buffer;
int index2 = num2;
int num4 = checked (index2 + 1);
int num5 = (int)numArray2[index2];
mqttMsgSubscribe3.messageId = (ushort)(messageId | num5);
IList <string> stringList = (IList <string>) new List <string>();
IList <byte> byteList1 = (IList <byte>) new List <byte>();
do
{
byte[] numArray3 = buffer;
int index3 = num4;
int num6 = checked (index3 + 1);
int num7 = (int)numArray3[index3] << 8 & 65280;
byte[] numArray4 = buffer;
int index4 = num6;
int sourceIndex = checked (index4 + 1);
int num8 = (int)numArray4[index4];
int length2 = num7 | num8;
byte[] bytes = new byte[length2];
Array.Copy((Array)buffer, sourceIndex, (Array)bytes, 0, length2);
int num9 = checked (sourceIndex + length2);
stringList.Add(new string(Encoding.UTF8.GetChars(bytes)));
IList <byte> byteList2 = byteList1;
byte[] numArray5 = buffer;
int index5 = num9;
num4 = checked (index5 + 1);
int num10 = (int)numArray5[index5];
byteList2.Add((byte)num10);
}while (num4 < length1);
mqttMsgSubscribe1.topics = new string[stringList.Count];
mqttMsgSubscribe1.qosLevels = new byte[byteList1.Count];
int index6 = 0;
while (index6 < stringList.Count)
{
mqttMsgSubscribe1.topics[index6] = stringList[index6];
mqttMsgSubscribe1.qosLevels[index6] = byteList1[index6];
checked { ++index6; }
}
return(mqttMsgSubscribe1);
}
/// <summary>
/// Parse bytes for a UNSUBSCRIBE message
/// </summary>
/// <param name="fixedHeaderFirstByte">First fixed header byte</param>
/// <param name="protocolVersion">Protocol Version</param>
/// <param name="channel">Channel connected to the broker</param>
/// <returns>UNSUBSCRIBE message instance</returns>
public static MqttMsgUnsubscribe Parse(byte fixedHeaderFirstByte, byte protocolVersion, IMqttNetworkChannel channel)
{
byte[] buffer;
int index = 0;
byte[] topicUtf8;
int topicUtf8Length;
MqttMsgUnsubscribe msg = new MqttMsgUnsubscribe();
if (protocolVersion == MqttMsgConnect.PROTOCOL_VERSION_V3_1_1)
{
// [v3.1.1] check flag bits
if ((fixedHeaderFirstByte & MSG_FLAG_BITS_MASK) != MQTT_MSG_UNSUBSCRIBE_FLAG_BITS)
{
throw new MqttClientException(MqttClientErrorCode.InvalidFlagBits);
}
}
// get remaining length and allocate buffer
int remainingLength = MqttMsgBase.decodeRemainingLength(channel);
buffer = new byte[remainingLength];
// read bytes from socket...
int received = channel.Receive(buffer);
if (protocolVersion == MqttMsgConnect.PROTOCOL_VERSION_V3_1)
{
// only 3.1.0
// read QoS level from fixed header
msg.qosLevel = (byte)((fixedHeaderFirstByte & QOS_LEVEL_MASK) >> QOS_LEVEL_OFFSET);
// read DUP flag from fixed header
msg.dupFlag = (((fixedHeaderFirstByte & DUP_FLAG_MASK) >> DUP_FLAG_OFFSET) == 0x01);
// retain flag not used
msg.retain = false;
}
// message id
msg.messageId = (ushort)((buffer[index++] << 8) & 0xFF00);
msg.messageId |= (buffer[index++]);
// payload contains topics
// NOTE : before, I don't know how many topics will be in the payload (so use List)
// if .Net Micro Framework
#if (MF_FRAMEWORK_VERSION_V4_2 || MF_FRAMEWORK_VERSION_V4_3 || NANOFRAMEWORK_V1_0)
IList tmpTopics = new ArrayList();
// else other frameworks (.Net, .Net Compact, Mono, Windows Phone)
#else
IList <String> tmpTopics = new List <String>();
#endif
do
{
// topic name
topicUtf8Length = ((buffer[index++] << 8) & 0xFF00);
topicUtf8Length |= buffer[index++];
topicUtf8 = new byte[topicUtf8Length];
Array.Copy(buffer, index, topicUtf8, 0, topicUtf8Length);
index += topicUtf8Length;
tmpTopics.Add(new String(Encoding.UTF8.GetChars(topicUtf8)));
} while (index < remainingLength);
// copy from list to array
msg.topics = new string[tmpTopics.Count];
for (int i = 0; i < tmpTopics.Count; i++)
{
msg.topics[i] = (string)tmpTopics[i];
}
return(msg);
}
/// <summary>
/// Parse bytes for a SUBSCRIBE message
/// </summary>
/// <param name="fixedHeaderFirstByte">First fixed header byte</param>
/// <param name="channel">Channel connected to the broker</param>
/// <returns>SUBSCRIBE message instance</returns>
public static MqttMsgSubscribe Parse(byte fixedHeaderFirstByte, IMqttNetworkChannel channel)
{
byte[] buffer;
int index = 0;
byte[] topicUtf8;
int topicUtf8Length;
MqttMsgSubscribe msg = new MqttMsgSubscribe();
// get remaining length and allocate buffer
int remainingLength = MqttMsgBase.decodeRemainingLength(channel);
buffer = new byte[remainingLength];
// read bytes from socket...
int received = channel.Receive(buffer);
// read QoS level from fixed header
msg.qosLevel = (byte)((fixedHeaderFirstByte & QOS_LEVEL_MASK) >> QOS_LEVEL_OFFSET);
// read DUP flag from fixed header
msg.dupFlag = (((fixedHeaderFirstByte & DUP_FLAG_MASK) >> DUP_FLAG_OFFSET) == 0x01);
// retain flag not used
msg.retain = false;
// message id
msg.messageId = (ushort)((buffer[index++] << 8) & 0xFF00);
msg.messageId |= (buffer[index++]);
// payload contains topics and QoS levels
// NOTE : before, I don't know how many topics will be in the payload (so use List)
// if .Net Micro Framework
#if (MF_FRAMEWORK_VERSION_V4_2 || MF_FRAMEWORK_VERSION_V4_3)
IList tmpTopics = new ArrayList();
IList tmpQosLevels = new ArrayList();
// else other frameworks (.Net, .Net Compact, Mono, Windows Phone)
#else
IList <String> tmpTopics = new List <String>();
IList <byte> tmpQosLevels = new List <byte>();
#endif
do
{
// topic name
topicUtf8Length = ((buffer[index++] << 8) & 0xFF00);
topicUtf8Length |= buffer[index++];
topicUtf8 = new byte[topicUtf8Length];
Array.Copy(buffer, index, topicUtf8, 0, topicUtf8Length);
index += topicUtf8Length;
tmpTopics.Add(new String(Encoding.UTF8.GetChars(topicUtf8)));
// QoS level
tmpQosLevels.Add(buffer[index++]);
} while (index < remainingLength);
// copy from list to array
msg.topics = new string[tmpTopics.Count];
msg.qosLevels = new byte[tmpQosLevels.Count];
for (int i = 0; i < tmpTopics.Count; i++)
{
msg.topics[i] = (string)tmpTopics[i];
msg.qosLevels[i] = (byte)tmpQosLevels[i];
}
return(msg);
}
/// <summary>
/// Parse bytes for a CONNECT message
/// </summary>
/// <param name="fixedHeaderFirstByte">First fixed header byte</param>
/// <param name="channel">Channel connected to the broker</param>
/// <returns>CONNECT message instance</returns>
public static MqttMsgConnect Parse(byte fixedHeaderFirstByte, IMqttNetworkChannel channel)
{
byte[] buffer;
int index = 0;
int protNameUtf8Length;
byte[] protNameUtf8;
bool isUsernameFlag;
bool isPasswordFlag;
int clientIdUtf8Length;
byte[] clientIdUtf8;
int willTopicUtf8Length;
byte[] willTopicUtf8;
int willMessageUtf8Length;
byte[] willMessageUtf8;
int usernameUtf8Length;
byte[] usernameUtf8;
int passwordUtf8Length;
byte[] passwordUtf8;
MqttMsgConnect msg = new MqttMsgConnect();
// get remaining length and allocate buffer
int remainingLength = MqttMsgBase.decodeRemainingLength(channel);
buffer = new byte[remainingLength];
// read bytes from socket...
channel.Receive(buffer);
// protocol name
protNameUtf8Length = ((buffer[index++] << 8) & 0xFF00);
protNameUtf8Length |= buffer[index++];
protNameUtf8 = new byte[protNameUtf8Length];
Array.Copy(buffer, index, protNameUtf8, 0, protNameUtf8Length);
index += protNameUtf8Length;
msg.protocolName = new String(Encoding.UTF8.GetChars(protNameUtf8));
// protocol version
msg.protocolVersion = buffer[index];
index += PROTOCOL_VERSION_NUMBER_SIZE;
// connect flags
isUsernameFlag = (buffer[index] & USERNAME_FLAG_MASK) != 0x00;
isPasswordFlag = (buffer[index] & PASSWORD_FLAG_MASK) != 0x00;
msg.willRetain = (buffer[index] & WILL_RETAIN_FLAG_MASK) != 0x00;
msg.willQosLevel = (byte)((buffer[index] & WILL_QOS_FLAG_MASK) >> WILL_QOS_FLAG_OFFSET);
msg.willFlag = (buffer[index] & WILL_FLAG_MASK) != 0x00;
msg.cleanSession = (buffer[index] & CLEAN_SESSION_FLAG_MASK) != 0x00;
index += CONNECT_FLAGS_SIZE;
// keep alive timer
msg.keepAlivePeriod = (ushort)((buffer[index++] << 8) & 0xFF00);
msg.keepAlivePeriod |= buffer[index++];
// client identifier
clientIdUtf8Length = ((buffer[index++] << 8) & 0xFF00);
clientIdUtf8Length |= buffer[index++];
clientIdUtf8 = new byte[clientIdUtf8Length];
Array.Copy(buffer, index, clientIdUtf8, 0, clientIdUtf8Length);
index += clientIdUtf8Length;
msg.clientId = new String(Encoding.UTF8.GetChars(clientIdUtf8));
// will topic and will message
if (msg.willFlag)
{
willTopicUtf8Length = ((buffer[index++] << 8) & 0xFF00);
willTopicUtf8Length |= buffer[index++];
willTopicUtf8 = new byte[willTopicUtf8Length];
Array.Copy(buffer, index, willTopicUtf8, 0, willTopicUtf8Length);
index += willTopicUtf8Length;
msg.willTopic = new String(Encoding.UTF8.GetChars(willTopicUtf8));
willMessageUtf8Length = ((buffer[index++] << 8) & 0xFF00);
willMessageUtf8Length |= buffer[index++];
willMessageUtf8 = new byte[willMessageUtf8Length];
Array.Copy(buffer, index, willMessageUtf8, 0, willMessageUtf8Length);
index += willMessageUtf8Length;
msg.willMessage = new String(Encoding.UTF8.GetChars(willMessageUtf8));
}
// username
if (isUsernameFlag)
{
usernameUtf8Length = ((buffer[index++] << 8) & 0xFF00);
usernameUtf8Length |= buffer[index++];
usernameUtf8 = new byte[usernameUtf8Length];
Array.Copy(buffer, index, usernameUtf8, 0, usernameUtf8Length);
index += usernameUtf8Length;
msg.username = new String(Encoding.UTF8.GetChars(usernameUtf8));
}
// password
if (isPasswordFlag)
{
passwordUtf8Length = ((buffer[index++] << 8) & 0xFF00);
passwordUtf8Length |= buffer[index++];
passwordUtf8 = new byte[passwordUtf8Length];
Array.Copy(buffer, index, passwordUtf8, 0, passwordUtf8Length);
index += passwordUtf8Length;
msg.password = new String(Encoding.UTF8.GetChars(passwordUtf8));
}
return(msg);
}
/// <summary>
/// Parse bytes for a CONNECT message
/// </summary>
/// <param name="fixedHeaderFirstByte">First fixed header byte</param>
/// <param name="protocolVersion">Protocol Version</param>
/// <param name="channel">Channel connected to the broker</param>
/// <returns>CONNECT message instance</returns>
public static MqttMsgConnect Parse(byte fixedHeaderFirstByte, byte protocolVersion, IMqttNetworkChannel channel)
{
byte[] buffer;
int index = 0;
int protNameUtf8Length;
byte[] protNameUtf8;
bool isUsernameFlag;
bool isPasswordFlag;
int clientIdUtf8Length;
byte[] clientIdUtf8;
int willTopicUtf8Length;
byte[] willTopicUtf8;
int willMessageUtf8Length;
byte[] willMessageUtf8;
int usernameUtf8Length;
byte[] usernameUtf8;
int passwordUtf8Length;
byte[] passwordUtf8;
MqttMsgConnect msg = new MqttMsgConnect();
// get remaining length and allocate buffer
int remainingLength = MqttMsgBase.decodeRemainingLength(channel);
buffer = new byte[remainingLength];
// read bytes from socket...
channel.Receive(buffer);
// protocol name
protNameUtf8Length = ((buffer[index++] << 8) & 0xFF00);
protNameUtf8Length |= buffer[index++];
protNameUtf8 = new byte[protNameUtf8Length];
Array.Copy(buffer, index, protNameUtf8, 0, protNameUtf8Length);
index += protNameUtf8Length;
msg.protocolName = new String(Encoding.UTF8.GetChars(protNameUtf8));
// [v3.1.1] wrong protocol name
if (!msg.protocolName.Equals(PROTOCOL_NAME_V3_1) && !msg.protocolName.Equals(PROTOCOL_NAME_V3_1_1))
{
throw new MqttClientException(MqttClientErrorCode.InvalidProtocolName);
}
// protocol version
msg.protocolVersion = buffer[index];
index += PROTOCOL_VERSION_SIZE;
// connect flags
// [v3.1.1] check lsb (reserved) must be 0
if ((msg.protocolVersion == PROTOCOL_VERSION_V3_1_1) &&
((buffer[index] & RESERVED_FLAG_MASK) != 0x00))
{
throw new MqttClientException(MqttClientErrorCode.InvalidConnectFlags);
}
isUsernameFlag = (buffer[index] & USERNAME_FLAG_MASK) != 0x00;
isPasswordFlag = (buffer[index] & PASSWORD_FLAG_MASK) != 0x00;
msg.willRetain = (buffer[index] & WILL_RETAIN_FLAG_MASK) != 0x00;
msg.willQosLevel = (byte)((buffer[index] & WILL_QOS_FLAG_MASK) >> WILL_QOS_FLAG_OFFSET);
msg.willFlag = (buffer[index] & WILL_FLAG_MASK) != 0x00;
msg.cleanSession = (buffer[index] & CLEAN_SESSION_FLAG_MASK) != 0x00;
index += CONNECT_FLAGS_SIZE;
// keep alive timer
msg.keepAlivePeriod = (ushort)((buffer[index++] << 8) & 0xFF00);
msg.keepAlivePeriod |= buffer[index++];
// client identifier [v3.1.1] it may be zero bytes long (empty string)
clientIdUtf8Length = ((buffer[index++] << 8) & 0xFF00);
clientIdUtf8Length |= buffer[index++];
clientIdUtf8 = new byte[clientIdUtf8Length];
Array.Copy(buffer, index, clientIdUtf8, 0, clientIdUtf8Length);
index += clientIdUtf8Length;
msg.clientId = new String(Encoding.UTF8.GetChars(clientIdUtf8));
// [v3.1.1] if client identifier is zero bytes long, clean session must be true
if ((msg.protocolVersion == PROTOCOL_VERSION_V3_1_1) && (clientIdUtf8Length == 0) && (!msg.cleanSession))
{
throw new MqttClientException(MqttClientErrorCode.InvalidClientId);
}
// will topic and will message
if (msg.willFlag)
{
willTopicUtf8Length = ((buffer[index++] << 8) & 0xFF00);
willTopicUtf8Length |= buffer[index++];
willTopicUtf8 = new byte[willTopicUtf8Length];
Array.Copy(buffer, index, willTopicUtf8, 0, willTopicUtf8Length);
index += willTopicUtf8Length;
msg.willTopic = new String(Encoding.UTF8.GetChars(willTopicUtf8));
willMessageUtf8Length = ((buffer[index++] << 8) & 0xFF00);
willMessageUtf8Length |= buffer[index++];
willMessageUtf8 = new byte[willMessageUtf8Length];
Array.Copy(buffer, index, willMessageUtf8, 0, willMessageUtf8Length);
index += willMessageUtf8Length;
msg.willMessage = new String(Encoding.UTF8.GetChars(willMessageUtf8));
}
// username
if (isUsernameFlag)
{
usernameUtf8Length = ((buffer[index++] << 8) & 0xFF00);
usernameUtf8Length |= buffer[index++];
usernameUtf8 = new byte[usernameUtf8Length];
Array.Copy(buffer, index, usernameUtf8, 0, usernameUtf8Length);
index += usernameUtf8Length;
msg.username = new String(Encoding.UTF8.GetChars(usernameUtf8));
}
// password
if (isPasswordFlag)
{
passwordUtf8Length = ((buffer[index++] << 8) & 0xFF00);
passwordUtf8Length |= buffer[index++];
passwordUtf8 = new byte[passwordUtf8Length];
Array.Copy(buffer, index, passwordUtf8, 0, passwordUtf8Length);
index += passwordUtf8Length;
msg.password = new String(Encoding.UTF8.GetChars(passwordUtf8));
}
return(msg);
}
public static MqttMsgConnect Parse(byte fixedHeaderFirstByte, byte protocolVersion, IMqttNetworkChannel channel)
{
int num1 = 0;
MqttMsgConnect mqttMsgConnect1 = new MqttMsgConnect();
byte[] buffer = new byte[MqttMsgBase.decodeRemainingLength(channel)];
channel.Receive(buffer);
byte[] numArray1 = buffer;
int index1 = num1;
int num2 = checked (index1 + 1);
int num3 = (int)numArray1[index1] << 8 & 65280;
byte[] numArray2 = buffer;
int index2 = num2;
int sourceIndex1 = checked (index2 + 1);
int num4 = (int)numArray2[index2];
int length1 = num3 | num4;
byte[] bytes1 = new byte[length1];
Array.Copy((Array)buffer, sourceIndex1, (Array)bytes1, 0, length1);
int index3 = checked (sourceIndex1 + length1);
mqttMsgConnect1.protocolName = new string(Encoding.UTF8.GetChars(bytes1));
if (!mqttMsgConnect1.protocolName.Equals("MQIsdp") && !mqttMsgConnect1.protocolName.Equals("MQTT"))
{
throw new MqttClientException(MqttClientErrorCode.InvalidProtocolName);
}
mqttMsgConnect1.protocolVersion = buffer[index3];
int index4 = checked (index3 + 1);
if (mqttMsgConnect1.protocolVersion == (byte)4 && ((uint)buffer[index4] & 1U) > 0U)
{
throw new MqttClientException(MqttClientErrorCode.InvalidConnectFlags);
}
bool flag1 = ((uint)buffer[index4] & 128U) > 0U;
bool flag2 = ((uint)buffer[index4] & 64U) > 0U;
mqttMsgConnect1.willRetain = ((uint)buffer[index4] & 32U) > 0U;
mqttMsgConnect1.willQosLevel = checked ((byte)(((int)buffer[index4] & 24) >> 3));
mqttMsgConnect1.willFlag = ((uint)buffer[index4] & 4U) > 0U;
mqttMsgConnect1.cleanSession = ((uint)buffer[index4] & 2U) > 0U;
int num5 = checked (index4 + 1);
MqttMsgConnect mqttMsgConnect2 = mqttMsgConnect1;
byte[] numArray3 = buffer;
int index5 = num5;
int num6 = checked (index5 + 1);
int num7 = (int)checked ((ushort)((int)numArray3[index5] << 8 & 65280));
mqttMsgConnect2.keepAlivePeriod = (ushort)num7;
MqttMsgConnect mqttMsgConnect3 = mqttMsgConnect1;
int keepAlivePeriod = (int)mqttMsgConnect3.keepAlivePeriod;
byte[] numArray4 = buffer;
int index6 = num6;
int num8 = checked (index6 + 1);
int num9 = (int)numArray4[index6];
mqttMsgConnect3.keepAlivePeriod = (ushort)(keepAlivePeriod | num9);
byte[] numArray5 = buffer;
int index7 = num8;
int num10 = checked (index7 + 1);
int num11 = (int)numArray5[index7] << 8 & 65280;
byte[] numArray6 = buffer;
int index8 = num10;
int sourceIndex2 = checked (index8 + 1);
int num12 = (int)numArray6[index8];
int length2 = num11 | num12;
byte[] bytes2 = new byte[length2];
Array.Copy((Array)buffer, sourceIndex2, (Array)bytes2, 0, length2);
int num13 = checked (sourceIndex2 + length2);
mqttMsgConnect1.clientId = new string(Encoding.UTF8.GetChars(bytes2));
if (mqttMsgConnect1.protocolVersion == (byte)4 && length2 == 0 && !mqttMsgConnect1.cleanSession)
{
throw new MqttClientException(MqttClientErrorCode.InvalidClientId);
}
if (mqttMsgConnect1.willFlag)
{
byte[] numArray7 = buffer;
int index9 = num13;
int num14 = checked (index9 + 1);
int num15 = (int)numArray7[index9] << 8 & 65280;
byte[] numArray8 = buffer;
int index10 = num14;
int sourceIndex3 = checked (index10 + 1);
int num16 = (int)numArray8[index10];
int length3 = num15 | num16;
byte[] bytes3 = new byte[length3];
Array.Copy((Array)buffer, sourceIndex3, (Array)bytes3, 0, length3);
int num17 = checked (sourceIndex3 + length3);
mqttMsgConnect1.willTopic = new string(Encoding.UTF8.GetChars(bytes3));
byte[] numArray9 = buffer;
int index11 = num17;
int num18 = checked (index11 + 1);
int num19 = (int)numArray9[index11] << 8 & 65280;
byte[] numArray10 = buffer;
int index12 = num18;
int sourceIndex4 = checked (index12 + 1);
int num20 = (int)numArray10[index12];
int length4 = num19 | num20;
byte[] bytes4 = new byte[length4];
Array.Copy((Array)buffer, sourceIndex4, (Array)bytes4, 0, length4);
num13 = checked (sourceIndex4 + length4);
mqttMsgConnect1.willMessage = new string(Encoding.UTF8.GetChars(bytes4));
}
if (flag1)
{
byte[] numArray7 = buffer;
int index9 = num13;
int num14 = checked (index9 + 1);
int num15 = (int)numArray7[index9] << 8 & 65280;
byte[] numArray8 = buffer;
int index10 = num14;
int sourceIndex3 = checked (index10 + 1);
int num16 = (int)numArray8[index10];
int length3 = num15 | num16;
byte[] bytes3 = new byte[length3];
Array.Copy((Array)buffer, sourceIndex3, (Array)bytes3, 0, length3);
num13 = checked (sourceIndex3 + length3);
mqttMsgConnect1.username = new string(Encoding.UTF8.GetChars(bytes3));
}
if (flag2)
{
byte[] numArray7 = buffer;
int index9 = num13;
int num14 = checked (index9 + 1);
int num15 = (int)numArray7[index9] << 8 & 65280;
byte[] numArray8 = buffer;
int index10 = num14;
int sourceIndex3 = checked (index10 + 1);
int num16 = (int)numArray8[index10];
int length3 = num15 | num16;
byte[] bytes3 = new byte[length3];
Array.Copy((Array)buffer, sourceIndex3, (Array)bytes3, 0, length3);
int num17 = checked (sourceIndex3 + length3);
mqttMsgConnect1.password = new string(Encoding.UTF8.GetChars(bytes3));
}
return(mqttMsgConnect1);
}
public static MqttMsgPublish Parse(byte fixedHeaderFirstByte, byte protocolVersion, IMqttNetworkChannel channel)
{
int num1 = 0;
MqttMsgPublish mqttMsgPublish1 = new MqttMsgPublish();
int length1 = MqttMsgBase.decodeRemainingLength(channel);
byte[] buffer = new byte[length1];
int num2 = channel.Receive(buffer);
byte[] numArray1 = buffer;
int index1 = num1;
int num3 = checked (index1 + 1);
int num4 = (int)numArray1[index1] << 8 & 65280;
byte[] numArray2 = buffer;
int index2 = num3;
int sourceIndex1 = checked (index2 + 1);
int num5 = (int)numArray2[index2];
int length2 = num4 | num5;
byte[] bytes = new byte[length2];
Array.Copy((Array)buffer, sourceIndex1, (Array)bytes, 0, length2);
int sourceIndex2 = checked (sourceIndex1 + length2);
mqttMsgPublish1.topic = new string(Encoding.UTF8.GetChars(bytes));
mqttMsgPublish1.qosLevel = checked ((byte)(((int)fixedHeaderFirstByte & 6) >> 1));
if (mqttMsgPublish1.qosLevel > (byte)2)
{
throw new MqttClientException(MqttClientErrorCode.QosNotAllowed);
}
mqttMsgPublish1.dupFlag = ((int)fixedHeaderFirstByte & 8) >> 3 == 1;
mqttMsgPublish1.retain = ((int)fixedHeaderFirstByte & 1) == 1;
if (mqttMsgPublish1.qosLevel == (byte)1 || mqttMsgPublish1.qosLevel == (byte)2)
{
MqttMsgPublish mqttMsgPublish2 = mqttMsgPublish1;
byte[] numArray3 = buffer;
int index3 = sourceIndex2;
int num6 = checked (index3 + 1);
int num7 = (int)checked ((ushort)((int)numArray3[index3] << 8 & 65280));
mqttMsgPublish2.messageId = (ushort)num7;
MqttMsgPublish mqttMsgPublish3 = mqttMsgPublish1;
int messageId = (int)mqttMsgPublish3.messageId;
byte[] numArray4 = buffer;
int index4 = num6;
sourceIndex2 = checked (index4 + 1);
int num8 = (int)numArray4[index4];
mqttMsgPublish3.messageId = (ushort)(messageId | num8);
}
int length3 = checked (length1 - sourceIndex2);
int num9 = length3;
int destinationIndex1 = 0;
mqttMsgPublish1.message = new byte[length3];
Array.Copy((Array)buffer, sourceIndex2, (Array)mqttMsgPublish1.message, destinationIndex1, checked (num2 - sourceIndex2));
int num10 = checked (num9 - num2 - sourceIndex2);
int destinationIndex2 = checked (destinationIndex1 + num2 - sourceIndex2);
while (num10 > 0)
{
int length4 = channel.Receive(buffer);
Array.Copy((Array)buffer, 0, (Array)mqttMsgPublish1.message, destinationIndex2, length4);
checked { num10 -= length4; }
checked { destinationIndex2 += length4; }
}
return(mqttMsgPublish1);
}
