Package software.amazon.awssdk.crt.mqtt5.packets

Class ConnAckPacket

java.lang.Object
software.amazon.awssdk.crt.mqtt5.packets.ConnAckPacket
public class ConnAckPacket extends Object
Data model of an MQTT5 CONNACK packet.

  • Constructor Details

    • ConnAckPacket

      public ConnAckPacket()

  • Method Details

    • getSessionPresent

      public boolean getSessionPresent()
      Returns true if the client rejoined an existing session on the server, false otherwise. See MQTT5 Session Present
      Returns:
      True if the client rejoined an existing session on the server, false otherwise.

    • getReasonCode

      public ConnAckPacket.ConnectReasonCode getReasonCode()
      Returns an indicator that is either success or the reason for failure for the connection attempt. See MQTT5 Connect Reason Code
      Returns:
      Code indicating either success or the reason for failure for the connection attempt.

    • getSessionExpiryIntervalSeconds

      public Long getSessionExpiryIntervalSeconds()
      Returns a time interval, in seconds, that the server will persist this connection's MQTT session state for. If present, this value overrides any session expiry specified in the preceding ConnectPacket. See MQTT5 Session Expiry Interval
      Returns:
      A time interval, in seconds, that the server will persist this connection's MQTT session state for.

    • getSessionExpiryInterval

      public Long getSessionExpiryInterval()
      Deprecated.
      prefer getSessionExpiryIntervalSeconds
      Returns a time interval, in seconds, that the server will persist this connection's MQTT session state for. If present, this value overrides any session expiry specified in the preceding ConnectPacket. See MQTT5 Session Expiry Interval
      Returns:
      A time interval, in seconds, that the server will persist this connection's MQTT session state for.

    • getReceiveMaximum

      public Integer getReceiveMaximum()
      Returns the maximum amount of in-flight QoS 1 or 2 messages that the server is willing to handle at once. If omitted or null, the limit is based on the valid MQTT packet id space (65535). See MQTT5 Receive Maximum
      Returns:
      The maximum amount of in-flight QoS 1 or 2 messages that the server is willing to handle at once.

    • getMaximumQOS

      public QOS getMaximumQOS()
      Returns the maximum message delivery quality of service that the server will allow on this connection. See MQTT5 Maximum QoS
      Returns:
      The maximum message delivery quality of service that the server will allow on this connection.

    • getRetainAvailable

      public Boolean getRetainAvailable()
      Returns an indicator whether the server supports retained messages. If null, retained messages are supported. See MQTT5 Retain Available
      Returns:
      Whether the server supports retained messages

    • getMaximumPacketSize

      public Long getMaximumPacketSize()
      Returns the maximum packet size, in bytes, that the server is willing to accept. If null, there is no limit beyond what is imposed by the MQTT spec itself. See MQTT5 Maximum Packet Size
      Returns:
      The maximum packet size, in bytes, that the server is willing to accept.

    • getAssignedClientIdentifier

      public String getAssignedClientIdentifier()
      Returns a client identifier assigned to this connection by the server. Only valid when the client id of the preceding ConnectPacket was left empty. See MQTT5 Assigned Client Identifier
      Returns:
      Client identifier assigned to this connection by the server

    • getTopicAliasMaximum

      public Integer getTopicAliasMaximum()
      Returns the maximum topic alias value that the server will accept from the client. See MQTT5 Topic Alias Maximum
      Returns:
      maximum allowed topic alias value

    • getReasonString

      public String getReasonString()
      Returns additional diagnostic information about the result of the connection attempt. See MQTT5 Reason String
      Returns:
      Additional diagnostic information about the result of the connection attempt.

    • getUserProperties

      public List<UserProperty> getUserProperties()
      Returns a list of MQTT5 user properties included with the packet. See MQTT5 User Property
      Returns:
      List of MQTT5 user properties included with the packet.

    • getWildcardSubscriptionsAvailable

      public Boolean getWildcardSubscriptionsAvailable()
      Returns whether the server supports wildcard subscriptions. If null, wildcard subscriptions are supported. See MQTT5 Wildcard Subscriptions Available
      Returns:
      Whether the server supports wildcard subscriptions.

    • getSubscriptionIdentifiersAvailable

      public Boolean getSubscriptionIdentifiersAvailable()
      Returns whether the server supports subscription identifiers. If null, subscription identifiers are supported. See MQTT5 Subscription Identifiers Available
      Returns:
      whether the server supports subscription identifiers.

    • getSharedSubscriptionsAvailable

      public Boolean getSharedSubscriptionsAvailable()
      Returns whether the server supports shared subscription topic filters. If null, shared subscriptions are supported. See MQTT5 Shared Subscriptions Available
      Returns:
      whether the server supports shared subscription topic filters.

    • getServerKeepAliveSeconds

      public Integer getServerKeepAliveSeconds()
      Returns server-requested override of the keep alive interval, in seconds. If null, the keep alive value sent by the client should be used. See MQTT5 Server Keep Alive
      Returns:
      Server-requested override of the keep alive interval, in seconds

    • getServerKeepAlive

      public Integer getServerKeepAlive()
      Deprecated.
      prefer getServerKeepAliveSeconds
      Returns server-requested override of the keep alive interval, in seconds. If null, the keep alive value sent by the client should be used. See MQTT5 Server Keep Alive
      Returns:
      Server-requested override of the keep alive interval, in seconds

    • getResponseInformation

      public String getResponseInformation()
      Returns a value that can be used in the creation of a response topic associated with this connection. MQTT5-based request/response is outside the purview of the MQTT5 spec and this client. See MQTT5 Response Information
      Returns:
      A value that can be used in the creation of a response topic associated with this connection.

    • getServerReference

      public String getServerReference()
      Returns property indicating an alternate server that the client may temporarily or permanently attempt to connect to instead of the configured endpoint. Will only be set if the reason code indicates another server may be used (ServerMoved, UseAnotherServer). See MQTT5 Server Reference
      Returns:
      Property indicating an alternate server that the client may temporarily or permanently attempt to connect to instead of the configured endpoint.