FAST Feed Handler XML Element Descriptions

Use the fastfeedhandler.xml and publisher.xml files to configure the FAST feed handler.

Warning! Shut down the FAST feed handler before modifying any of its configuration elements.

The logging details in fastfeedhandler.xml supersede the logging details specified in publisher.xml.

Configurable elements of fastfeedhandler.xml
Element	Description
FASTFeedHandler	Root element of the configuration file.
Logger	Contains settings for logging activities.
LogLevel	The level of logging. Valid values are: Error: only log errors. Warning: log warnings in addition to errors. Info: log informational messages in addition to messages logged at the warning level. Debug: log debugging messages in addition to messages logged at the info level.
LogFile	Name and location of the log file. The file name can be relative or a full path.
FASTTemplateLibrary	Defines a FAST template library. The library must contain at least one TemplateLibraryFile tag. If duplicate FAST templates are present within the definition of the library, the definition that appears last is used.
TemplateLibraryFile	Specifies an absolute or relative location of a file which is in the FAST template XML format, or the absolute or relative location of a directory containing files that are in the FAST template XML format. The tag may be repeated more than once in a template library.
SessionManager	Contains information about the FAST session established between the FAST feed handler and the source producing FAST-encoded messages.
FASTDataMode	Determines whether the FAST data being received is using stream mode or block mode.
MessageHandler	Contains configuration parameters related to the shared library message handler plug-in.
SharedLibrary	Name of the shared library to load for the message handler.
InitFunctionName	Name of the initialization function to look up in the shared library.
FiniFunctionName	Name of the finalization function to look up in the shared library.
ProcessFunctionName	Name of the process function to look up in the shared library.
InitParams	List of initialization parameters to be passed to the shared library's initialization function.
InitParam	Initialization parameters name and value which will be passed to the shared library's initialization function.
SessionConnection	Describes the FIX session connection information between the FAST feed handler and the source producing FAST-encoded messages.
LocalInterface	IP address of a network interface on the local machine, which should be used for receiving data from the source producing FAST-encoded messages.
MulticastHost	UDP multicast address of the source producing FAST-encoded messages.
ListenPort	UDP multicast port of the source producing FAST-encoded messages.

Configurable elements of publisher.xml
Element	Description
Publisher	Root element for the configuration file.
Logger	Contains settings for logging activities.
LogLevel	The level of logging. Valid values are: - Error: log only errors. - Warning: log warnings in addition to errors. - Info: log informational messages in addition to messages logged at the warning level. - Debug: log debugging messages in addition to messages logged at the info level.
LogFile	Name and location of the log file. The file name can be relative or a full path.
NumMessageBuffers	Number of message buffers. One message buffer is required for each message that is being simultaneously built. This setting can have a value from 1 -- 65535, although the machine must have enough memory to hold the number of buffers specified.
NumPacketBuffers	Maximum number of packets to cache to satisfy requests by a subscriber to resend a packet. The number of packets is cached per data stream channel. The setting can have a value from 1 -- 4294967296, although the machine must have enough memory to hold the number of packets specified. The number of buffers is allocated on initialization of the publisher.
MessageFlushInterval	Interval, in seconds, during which a partially filled message buffer must be idle before being sent on the network. This setting can have a value from 1 to 65535.
LatencyCheckInterval	Number of seconds after which to do a latency check on a message. This setting can have a value from 1 to 65535.
AdminChannel	Information about the administration channel. This channel accepts requests for version information, statistics, and shutdown.
LocalInterface	Local interface that the publisher uses to monitor administrative requests.
AdminPort	Port number used by the UAF agent to communicate with the publisher. The publisher listens for incoming administration requests on this port.
MaxConnections	Determines the number of concurrent connections to the AdminChannel. Defaults to 10. Value must be in the range of 1 to 65535.
ResendChannel	Information about the resend channel. This channel listens for connections from subscribers, who open connections to publishers and issue requests to resend packets.
ResendPort	Port number used by subscribers to request resends of dropped network packets, and to time network latency between publisher and subscriber.
TimeToLive	The limit on the number of routing devices a message may pass through before expiring.
DataStreamChannelList	A list of data stream channel definitions. There can be up to 255 data stream channels.
DataStreamChannel	Contains information for one data stream channel. Each message sent by the publisher is sent in a network packet buffer over one of the defined channels. The publisher attempts to balance sending over all the channels while the system is under load.
ChannelName	Descriptive name for the channel, which is used to identify the channel when logging.
LocalInterface	IP address of a network interface on the local machine, which should be used for sending data.
IPAddress	UDP multicast address for sending the messages over the network.
Port	Port over which messages are sent using UDP multicasting.