Class PahoConfiguration

    • Constructor Detail

      • PahoConfiguration

        public PahoConfiguration()
    • Method Detail

      • getClientId

        public String getClientId()
      • setClientId

        public void setClientId​(String clientId)
        MQTT client identifier. The identifier must be unique.
      • getBrokerUrl

        public String getBrokerUrl()
      • setBrokerUrl

        public void setBrokerUrl​(String brokerUrl)
        The URL of the MQTT broker.
      • getQos

        public int getQos()
      • setQos

        public void setQos​(int qos)
        Client quality of service level (0-2).
      • isRetained

        public boolean isRetained()
      • setRetained

        public void setRetained​(boolean retained)
        Retain option
      • setPersistence

        public void setPersistence​(PahoPersistence persistence)
        Client persistence to be used - memory or file.
      • getFilePersistenceDirectory

        public String getFilePersistenceDirectory()
      • setFilePersistenceDirectory

        public void setFilePersistenceDirectory​(String filePersistenceDirectory)
        Base directory used by file persistence. Will by default use user directory.
      • getUserName

        public String getUserName()
      • setUserName

        public void setUserName​(String userName)
        Username to be used for authentication against the MQTT broker
      • getPassword

        public String getPassword()
      • setPassword

        public void setPassword​(String password)
        Password to be used for authentication against the MQTT broker
      • getKeepAliveInterval

        public int getKeepAliveInterval()
      • setKeepAliveInterval

        public void setKeepAliveInterval​(int keepAliveInterval)
        Sets the keep alive interval. This value, measured in seconds, defines the maximum time interval between messages sent or received. It enables the client to detect if the server is no longer available, without having to wait for the TCP/IP timeout. The client will ensure that at least one message travels across the network within each keep alive period. In the absence of a data-related message during the time period, the client sends a very small ping message, which the server will acknowledge. A value of 0 disables keepalive processing in the client.

        The default value is 60 seconds

      • getMaxInflight

        public int getMaxInflight()
      • setMaxInflight

        public void setMaxInflight​(int maxInflight)
        Sets the max inflight. please increase this value in a high traffic environment.

        The default value is 10

      • getWillTopic

        public String getWillTopic()
      • setWillTopic

        public void setWillTopic​(String willTopic)
        Sets the "Last Will and Testament" (LWT) for the connection. In the event that this client unexpectedly loses its connection to the server, the server will publish a message to itself using the supplied details. Sets the topic that the willPayload will be published to.
      • getWillPayload

        public String getWillPayload()
      • setWillPayload

        public void setWillPayload​(String willPayload)
        Sets the "Last Will and Testament" (LWT) for the connection. In the event that this client unexpectedly loses its connection to the server, the server will publish a message to itself using the supplied details. Sets the message for the LWT.
      • getWillQos

        public int getWillQos()
      • setWillQos

        public void setWillQos​(int willQos)
        Sets the "Last Will and Testament" (LWT) for the connection. In the event that this client unexpectedly loses its connection to the server, the server will publish a message to itself using the supplied details. Sets the quality of service to publish the message at (0, 1 or 2).
      • isWillRetained

        public boolean isWillRetained()
      • setWillRetained

        public void setWillRetained​(boolean willRetained)
        Sets the "Last Will and Testament" (LWT) for the connection. In the event that this client unexpectedly loses its connection to the server, the server will publish a message to itself using the supplied details. Sets whether or not the message should be retained.
      • setSocketFactory

        public void setSocketFactory​(SocketFactory socketFactory)
        Sets the SocketFactory to use. This allows an application to apply its own policies around the creation of network sockets. If using an SSL connection, an SSLSocketFactory can be used to supply application-specific security settings.
      • getSslClientProps

        public Properties getSslClientProps()
      • setSslClientProps

        public void setSslClientProps​(Properties sslClientProps)
        Sets the SSL properties for the connection.

        Note that these properties are only valid if an implementation of the Java Secure Socket Extensions (JSSE) is available. These properties are not used if a custom SocketFactory has been set. The following properties can be used:

        com.ibm.ssl.protocol
        One of: SSL, SSLv3, TLS, TLSv1, SSL_TLS.
        com.ibm.ssl.contextProvider
        Underlying JSSE provider. For example "IBMJSSE2" or "SunJSSE"
        com.ibm.ssl.keyStore
        The name of the file that contains the KeyStore object that you want the KeyManager to use. For example /mydir/etc/key.p12
        com.ibm.ssl.keyStorePassword
        The password for the KeyStore object that you want the KeyManager to use. The password can either be in plain-text, or may be obfuscated using the static method: com.ibm.micro.security.Password.obfuscate(char[] password). This obfuscates the password using a simple and insecure XOR and Base64 encoding mechanism. Note that this is only a simple scrambler to obfuscate clear-text passwords.
        com.ibm.ssl.keyStoreType
        Type of key store, for example "PKCS12", "JKS", or "JCEKS".
        com.ibm.ssl.keyStoreProvider
        Key store provider, for example "IBMJCE" or "IBMJCEFIPS".
        com.ibm.ssl.trustStore
        The name of the file that contains the KeyStore object that you want the TrustManager to use.
        com.ibm.ssl.trustStorePassword
        The password for the TrustStore object that you want the TrustManager to use. The password can either be in plain-text, or may be obfuscated using the static method: com.ibm.micro.security.Password.obfuscate(char[] password). This obfuscates the password using a simple and insecure XOR and Base64 encoding mechanism. Note that this is only a simple scrambler to obfuscate clear-text passwords.
        com.ibm.ssl.trustStoreType
        The type of KeyStore object that you want the default TrustManager to use. Same possible values as "keyStoreType".
        com.ibm.ssl.trustStoreProvider
        Trust store provider, for example "IBMJCE" or "IBMJCEFIPS".
        com.ibm.ssl.enabledCipherSuites
        A list of which ciphers are enabled. Values are dependent on the provider, for example: SSL_RSA_WITH_AES_128_CBC_SHA;SSL_RSA_WITH_3DES_EDE_CBC_SHA.
        com.ibm.ssl.keyManager
        Sets the algorithm that will be used to instantiate a KeyManagerFactory object instead of using the default algorithm available in the platform. Example values: "IbmX509" or "IBMJ9X509".
        com.ibm.ssl.trustManager
        Sets the algorithm that will be used to instantiate a TrustManagerFactory object instead of using the default algorithm available in the platform. Example values: "PKIX" or "IBMJ9X509".
      • isHttpsHostnameVerificationEnabled

        public boolean isHttpsHostnameVerificationEnabled()
      • setHttpsHostnameVerificationEnabled

        public void setHttpsHostnameVerificationEnabled​(boolean httpsHostnameVerificationEnabled)
        Whether SSL HostnameVerifier is enabled or not. The default value is true.
      • setSslHostnameVerifier

        public void setSslHostnameVerifier​(HostnameVerifier sslHostnameVerifier)
        Sets the HostnameVerifier for the SSL connection. Note that it will be used after handshake on a connection and you should do actions by yourself when hostname is verified error.

        There is no default HostnameVerifier

      • isCleanSession

        public boolean isCleanSession()
      • setCleanSession

        public void setCleanSession​(boolean cleanSession)
        Sets whether the client and server should remember state across restarts and reconnects.
        • If set to false both the client and server will maintain state across restarts of the client, the server and the connection. As state is maintained:
          • Message delivery will be reliable meeting the specified QOS even if the client, server or connection are restarted.
          • The server will treat a subscription as durable.
        • If set to true the client and server will not maintain state across restarts of the client, the server or the connection. This means
          • Message delivery to the specified QOS cannot be maintained if the client, server or connection are restarted
          • The server will treat a subscription as non-durable
      • getConnectionTimeout

        public int getConnectionTimeout()
      • setConnectionTimeout

        public void setConnectionTimeout​(int connectionTimeout)
        Sets the connection timeout value. This value, measured in seconds, defines the maximum time interval the client will wait for the network connection to the MQTT server to be established. The default timeout is 30 seconds. A value of 0 disables timeout processing meaning the client will wait until the network connection is made successfully or fails.
      • getServerURIs

        public String getServerURIs()
      • setServerURIs

        public void setServerURIs​(String serverURIs)
        Set a list of one or more serverURIs the client may connect to. Multiple servers can be separated by comma.

        Each serverURI specifies the address of a server that the client may connect to. Two types of connection are supported tcp:// for a TCP connection and ssl:// for a TCP connection secured by SSL/TLS. For example:

        • tcp://localhost:1883
        • ssl://localhost:8883
        If the port is not specified, it will default to 1883 for tcp://" URIs, and 8883 for ssl:// URIs.

        If serverURIs is set then it overrides the serverURI parameter passed in on the constructor of the MQTT client.

        When an attempt to connect is initiated the client will start with the first serverURI in the list and work through the list until a connection is established with a server. If a connection cannot be made to any of the servers then the connect attempt fails.

        Specifying a list of servers that a client may connect to has several uses:

        1. High Availability and reliable message delivery

          Some MQTT servers support a high availability feature where two or more "equal" MQTT servers share state. An MQTT client can connect to any of the "equal" servers and be assured that messages are reliably delivered and durable subscriptions are maintained no matter which server the client connects to.

          The cleansession flag must be set to false if durable subscriptions and/or reliable message delivery is required.

        2. Hunt List

          A set of servers may be specified that are not "equal" (as in the high availability option). As no state is shared across the servers reliable message delivery and durable subscriptions are not valid. The cleansession flag must be set to true if the hunt list mode is used

      • getMqttVersion

        public int getMqttVersion()
      • setMqttVersion

        public void setMqttVersion​(int mqttVersion)
        Sets the MQTT version. The default action is to connect with version 3.1.1, and to fall back to 3.1 if that fails. Version 3.1.1 or 3.1 can be selected specifically, with no fall back, by using the MQTT_VERSION_3_1_1 or MQTT_VERSION_3_1 options respectively.
      • isAutomaticReconnect

        public boolean isAutomaticReconnect()
      • setAutomaticReconnect

        public void setAutomaticReconnect​(boolean automaticReconnect)
        Sets whether the client will automatically attempt to reconnect to the server if the connection is lost.
        • If set to false, the client will not attempt to automatically reconnect to the server in the event that the connection is lost.
        • If set to true, in the event that the connection is lost, the client will attempt to reconnect to the server. It will initially wait 1 second before it attempts to reconnect, for every failed reconnect attempt, the delay will double until it is at 2 minutes at which point the delay will stay at 2 minutes.
      • getMaxReconnectDelay

        public int getMaxReconnectDelay()
      • setMaxReconnectDelay

        public void setMaxReconnectDelay​(int maxReconnectDelay)
        Get the maximum time (in millis) to wait between reconnects
      • getCustomWebSocketHeaders

        public Properties getCustomWebSocketHeaders()
      • setCustomWebSocketHeaders

        public void setCustomWebSocketHeaders​(Properties customWebSocketHeaders)
        Sets the Custom WebSocket Headers for the WebSocket Connection.
      • getExecutorServiceTimeout

        public int getExecutorServiceTimeout()
      • setExecutorServiceTimeout

        public void setExecutorServiceTimeout​(int executorServiceTimeout)
        Set the time in seconds that the executor service should wait when terminating before forcefully terminating. It is not recommended to change this value unless you are absolutely sure that you need to.