20.10.2. qpid-java JVM Arguments


Table 20.5. Configuration Options For Connection Behavior
Property Name Type Default Value Description
qpid.amqp.version string 0-10 Sets the AMQP version to be used - currently supports 0-8, 0-9, 0-91, and 0-10. The client will begin negotiation at the specified version and only negotiate downwards if the broker does not support the specified version.
qpid.heartbeat int 120 (seconds) The heartbeat interval in seconds. Two consecutive missed heartbeats result in the connection timing out. This can also be set per connection.
ignore_setclientID boolean false If a client ID is specified in the connection URL then it is used, otherwise an ID is generated. If an ID is specified after it has been generated Qpid will throw an exception. Setting this property to 'true' disables that check and allows you to set a client ID at any time.
Table 20.6. Configuration Options For Session Behavior
Property Name Type Default Value Description
qpid.session.command_limit int 65536 Limits the number of unacknowledged commands.
qpid.session.byte_limit int 1048576 Limits the number of unacknowledged commands in bytes.
qpid.use_legacy_map_message boolean false Uses the old map message encoding. By default the map messages are encoded using the 0-10 map encoding. This can also be set per connection as well.
qpid.jms.daemon.dispatcher boolean false Controls whether the Session dispatcher thread is a daemon thread or not. If this system property is set to true then the Session dispatcher threads will be created as daemon threads. This setting is introduced in version 0.16.
Table 20.7. Configuration Options For Consumer Behavior
Property Name Type Default Value Description
max_prefetch int 500 Maximum number of messages to credits. Can also be set per connection or per destination.
qpid.session.max_ack_delay long 1000 (ms) Timer interval to flush message acks in buffer when using AUTO_ACK and DUPS_OK.
sync_ack boolean false If set, each message will be acknowledged synchronously. When using AUTO_ACK mode, set this to "true". Can also be set per connection.
Table 20.8. Configuration Options For Producer Behavior
Property Name Type Default Value Description
sync_publish string - Sends messages synchronously. Valid values are persistent, transient, all. Can also be set per connection.
Table 20.9. Configuration Options For Threading
Property Name Type Default Value Description
qpid.thread_factory string org.apache.qpid.thread.DefaultThreadFactory Specifies the thread factory to use. If using a real time JVM, set to org.apache.qpid.thread.RealtimeThreadFactory.
qpid.rt_thread_priority int 20 Specifies the priority (1-99) for realtime threads created by the realtime thread factory.
Table 20.10. Configuration Options For I/O
Property Name Type Default Value Description
qpid.transport string org.apache.qpid.transport.network.io.IoNetworkTransport The transport implementation to be used. You can also specify the org.apache.qpid.transport.network.NetworkTransport transport mechanism.
qpid.sync_op_timeout long 60000 (milliseconds) The length of time to wait for a synchronous operation to complete. For compatibility with older clients, use amqj.default_syncwrite_timeout.
qpid.tcp_nodelay boolean true
Sets the TCP_NODELAY property of the underlying socket.
This can also be set per connection using the Connection URL options.
For compatibility with older clients, the synonym amqj.tcp_nodelay is supported.
qpid.send_buffer_size integer 65535
Sets the SO_SNDBUF property of the underlying socket.
For compatibility with older clients, the synonym amqj.sendBufferSize is supported.
qpid.receive_buffer_size integer 65535
Sets the SO_RCVBUF property of the underlying socket.
For compatibility with older clients, the synonym amqj.receiveBufferSize is supported.
qpid.failover_method_timeout long 60000
During failover, this is the timeout for each attempt to try to re-establish the connection. If a reconnection attempt exceeds the timeout, the entire failover process is aborted.
It is only applicable for AMQP 0-8/0-9/0-9-1 clients.
Table 20.11. Configuration Options For Security
Property Name Type Default Value Description
qpid.sasl_mechs string PLAIN The SASL mechanism used. More than one can be specified using a comma separated list. Supported values are PLAIN, GSSAPI, and EXTERNAL.
qpid.sasl_protocol string AMQP When using GSSAPI as the SASL mechanism, sasl_protocol must be set to the principal for the qpidd broker.
qpid.sasl_server_name string localhost When using GSSAPI as the SASL mechanism, sasl_server must be set to the host for the SASL server.
Table 20.12. JVM properties for GSSAPI as the SASL mechanism
Property Name Type Default Value Description
javax.security.auth.useSubjectCredsOnly boolean true If set to 'false', forces the SASL GASSPI client to obtain kerberos credentials explicitly.
java.security.auth.login.config string - Specifies the JASS configuration file.
Table 20.13. Configuration options for SSL connections
Property Name Type Default Value Description
qpid.ssl_timeout long 60000 Timeout value used by the Java SSL engine when waiting on operations.
qpid.ssl.KeyManagerFactory.algorithm string -
The key manager factory algorithm name. If not set, defaults to the value returned from the Java runtime call KeyManagerFactory.getDefaultAlgorithm().
For compatibility with older clients, the synonym qpid.ssl.keyStoreCertType is supported.
qpid.ssl.TrustManagerFactory.algorithm string -
The trust manager factory algorithm name. If not set, defaults to the value returned from the Java runtime call TrustManagerFactory.getDefaultAlgorithm()
For compatibility with older clients, the synonym qpid.ssl.trustStoreCertType is supported.
Table 20.14. JVM Properties for SSL connections
Property Name Type Default Value Description
javax.net.ssl.keyStore string jvm default Specifies the key store path.
javax.net.ssl.keyStorePassword string jvm default Specifies the key store password.
javax.net.ssl.trustStore string jvm default Specifies the trust store path.
javax.net.ssl.trustStorePassword string jvm default Specifies the trust store password.
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