SessionOptions Class

To use non-default options on a Session, create a SessionOptions instance and set the required options and then supply it when creating a Session.

Inheritance Hierarchy

SystemObject
Bloomberglp.BlpapiSessionOptions

Namespace: Bloomberglp.Blpapi
Assembly: Bloomberglp.Blpapi (in Bloomberglp.Blpapi.dll) Version: 3.20.3.1

Syntax

C++

Copy

[SerializableAttribute]
public class SessionOptions

<SerializableAttribute>
Public Class SessionOptions

[SerializableAttribute]
public ref class SessionOptions

[<SerializableAttribute>]
type SessionOptions =  class end

The SessionOptions type exposes the following members.

Constructors

	Name	Description
	SessionOptions	Construct a SessionOption with well defined defaults for various options

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Properties

	Name	Description
	AllowMultipleCorrelatorsPerMsg	Gets or sets the allow multiple correlators per message flag. The default is false.
	ApplicationIdentityKey	Gets or sets the application identity key (AIK) which uniquely identifies this application for this session.
	AuthenticationOptions	Gets or sets the authentication options.
	AutoRestartOnDisconnection	Gets or sets the auto restart flag. The default is false.
	BandwidthSaveModeDisabled	Gets or sets the flag indicating whether the client has disabled bandwidth saving measures. By default it is false.
	ClientMode	Gets or sets the client mode. SessionOptionsClientModeType The default is AUTO AUTO
	ConnectTimeout	Gets or sets the connection timeout in milliseconds when connecting to an endpoint. The default value is 5000. The value must be greater than zero and less than or equal to 120000.
	DefaultKeepAliveInactivityTime	Gets or sets the default keep alive inactivity time in ms. The default value is 20000 ms.
	DefaultKeepAliveResponseTimeout	Gets or sets the keep alive response time in ms. The default value is 5000 ms.
	DefaultSubscriptionService	Gets or sets the default subscription service. The default is "//blp/mktdata"
	DefaultTopicPrefix	Gets or sets the default topic prefix. The default is "ticker/"
	KeepaliveEnabled	Gets or sets the keep alive enable flag. The default value is true.
	MaxEventQueueSize	Max queue size for events.
	MaxOutstandingRequests	Return max outstanding requests.
	MaxPendingRequests	Max pending requests.
	MaxSendCacheSize	Gets or sets the max send cache size. The default value is 128MB.
	NumStartAttempts	Gets or sets the max start attempts. The default value is 3.
	RecordSubscriptionDataReceiveTimes	Gets or sets if the receipt time (accessed via TimeReceived) should be recorded for subscription data messages.
	ServerAddresses	Gets or Sets the list of server address. Behavior is undefined if the specified 'value' contains any serverAddress whose hostname is an empty string.
	ServerHost	Gets or sets the API server host of the first element in the server list. The default is "127.0.0.1". For setter, behavior is undefined if the specified 'value' is an empty string.
	ServerPort	Gets or sets the API server port of the first element in the server list. The default is 8194.
	ServiceCheckTimeout	Gets or sets the service check timeout in ms. The default value is 60000 ms.
	ServiceDownloadTimeout	Gets or sets the service download timeout in ms. The default value is 120000 ms.
	SlowConsumerWarningHiWaterMark	Gets or sets the slow consumer warning high water mark limit regarding to MaxSendCacheSize. The default is 0.75.
	SlowConsumerWarningLoWaterMark	Gets or sets the slow consumer warning low water mark limit regarding to MaxSendCacheSizeMaxSendCacheSize. The default is 0.50.
	TlsOptions	Gets or sets TlsOptions to use for establishing secure connection. By default its null.

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Methods

	Name	Description
	SetSessionIdentityOptions	Sets the specified authOptions as the AuthOptions for the session identity, enabling automatic authorization of the session identity during startup. The session identity lifetime is tied to the session's lifetime, so it is guaranteed that the session identity will remain authorized during the entire duration of the session. The identity will be authorized before the session starts. The session will terminate if the identity fails to authorize or is revoked. The session identity is used to send requests and make subscriptions if no other identity is provided. By default the session identity is not authorized.
	ToString	Return the string representation of this object. (Overrides ObjectToString.)

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Remarks

Currently the following options are supported:

Option	Description
ServerHost	The hostname or the ip address of where the ServerAPI is running
ServerPort	The port number of the ServerAPI process
MaxSendCacheSize	Maximum number of bytes that will be cached by the Session before requests will fail.
MaxEventQueueSize	The maximum number of events that can be buffered by the Session. The value of MaxEventQueueSize must be greater than zero.
MaxPendingRequests	The maximum number of requests that can be pending
AllowMultipleCorrelatorsPerMsg	If a message is to be delivered for multiple correlators then deliver one message with all correlators folded into that one message
SlowConsumerWarningHiWaterMark	Set the fraction of 'MaxEventQueueSize' at which "slow consumer" events will be generated. A warning event will be generated when the number of outstanding undelivered events passes above 'SlowConsumerWarningHiWaterMark * MaxEventQueueSize'. The following is applicable 0.0 < slowConsumerWarningHiWaterMark <= 1.0. Further, at the time that Session.Start() is called, it must be the case that 'SlowConsumerWarningLoWaterMark * MaxEventQueueSize' < 'SlowConsumerWarningHiWaterMark * MaxEventQueueSize'.
SlowConsumerWarningLoWaterMark	Set the fraction of 'MaxEventQueueSize' at which "slow consumer cleared" events will be generated. A warning cleared event will be generated when the number of outstanding undelivered events drops below 'SlowConsumerWarningLoWaterMark * MaxEventQueueSize'. The following is applicable 0.0 <= SlowConsumerWarningLoWaterMark < 1.0. Further, at the time that Session.Start() is called, it must be the case that 'SlowConsumerWarningLoWaterMark * MaxEventQueueSize' < 'SlowConsumerWarningHiWaterMark * MaxEventQueueSize'.
DefaultSubscriptionService	The name of the service to be used by default for subscriptions.
DefaultTopicPrefix	The name of the topic prefix to be used for subscriptions if one is not provided.
ConnectTimeout	Timeout in milliseconds for session to establish a connection
ClientMode	See SessionOptionsClientModeType.
DefaultKeepAliveInactivityTime	Amount of time in milliseconds without any read activity on the connection before the library will ping the peer (requires compatible server). Also see DefaultKeepAliveResponseTimeout.
DefaultKeepAliveResponseTimeout	Timeout for the ping response in milliseconds. The peer will be declared "dead" if no ping response (or other data) is received within response timeout interval after the ping (requires compatible server). Also see DefaultKeepAliveInactivityTime.
KeepAliveEnabled	Whether all keep-alive mechanisms, both from the client to the server and from the server to the client, should be enabled.
RecordSubscriptionDataReceiveTimes	Should the receipt time (accessed via TimeReceived be recorded for subscription data messages.
TlsOptions	Client credentials and trusted certificates to establish secure connection. By default plaintext connection is used. See TlsOptions.
ServiceCheckTimeout	Timeout, in milliseconds, for checking what version of the schema should be downloaded when opening a new service. The timeout value must be a positive integer. The default timeout is 60,000 milliseconds.
ServiceDownloadTimeout	Timeout, in milliseconds, for downloading the service schema when opening a new service. The timeout value must be a positive integer. The default timeout is 120,000 milliseconds.
BandwidthSaveModeDisabled	Flag indicating whether the client has requested to override bandwidth saving measures, such as conflation for snapshot subscriptions. By default it is false.
SessionIdentityOptions	Authorization options that enable automatic authorization of the session identity during startup.
ApplicationIdentityKey	The application identity key (AIK) which uniquely identifies this application for this session.

Thread Safety

Instance members of this type are not safe for multi-threaded operations.

Reference

Bloomberglp.Blpapi Namespace