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This page is out of date and should not be used. Please refer to the Qpid JMS client books for up to date documentation.

Explanation of System properties used in Qpid

This page documents the various System Properties that are currently used in the Qpid Java code base.

Table of Contents
minlevel3

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client
client

Client Properties

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The default with AMQP is to start prefetching messages. However, with certain 3rd party Java tools, such as Mule this can cause a problem. Mule will create a consumer but never consume from it so any any prefetched messages will be stuck until that session is closed. This property is used to re-instate the default AMQP behaviour. The default Qpid behaviour is to prevent prefetch occurring, by starting the connection Flow Controlled, until a request for a message is made on the consumer either via a receive() or setting a message listener.

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qpid.

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sync_

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op_timeout

Type : long
Default: 3000060000
The number length of time in millisecond to wait for a synchronous write operation to complete. amqj.default_syncwrite_timeout is a synonym.

amq.dynamicsaslregistrar.properties

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Type : float
Default : 2.0
The factor used to get the timeout from the delay between heartbeats

amqj.

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tcp_nodelay

Type : boolean
Default : TRUE
Disable Nagle's algorithm on the TCP connection.

amqj.sendBufferSize

Type : integer
Default : 32768
This is the default buffer sized created by Mina.

amqj.receiveBufferSize

Type : integer
Default : 32768
This is the default buffer sized created by Mina.

amqj.protocolprovider.class

Type : String
Default : org.apache.qpid.server.protocol.AMQPFastProtocolHandler
This specifies the default IoHandlerAdapter that represents the InVM broker. The IoHandlerAdapter must have a constructor that takes a single Integer that represents the InVM port number.

amqj.protocol.logging.level

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