MLink Subscribe

Field Name	Field Type	Description
sessionID	short	(optional) actions below apply only to the sessionID virtual session; should be zero for non-multiplexed web-socket connections.
SubscribeID	GroupingCode	(optional) subscribeD will be reflected back in the corresponding MLinkSubscribeAck message; nothing is assumed about structure of this number
activeLatency	int	(optional) number of milliseconds between active send attempts (1 = minimum delay, 0 = wait for SignalReady) [default = 0]
compression	enum	(optional) FieldChangesOnly will suppress fields in messages that have not changed since the previous send (resets automatically after every subscription) None=0,FieldChangesOnly=1
doReset	enum:YesNo	if Yes all current subscriptions will be removed prior to applying the actions below
{View}
msgName	msgTypeName	a SpiderRock message name (topic channel) (can be string name or protobuf message number)
view	string	list (subset) of field names to return with this message type (eg. bidprice or askprice or bidsize or asksize)
{Subscribe}
msgName	msgTypeName	a SpiderRock message name (topic channel) (can be string name or protobuf message number)
msgPKey	string	an existing message.pkey; can be in either flat string or JSON format; if missing/empty all active msgName subscriptions will be removed
{Unsubscribe}
msgName	msgTypeName	a SpiderRock message name (topic channel) (can be string name or protobuf message number)
msgPKey	string	an existing message.pkey; can be in either flat string or JSON format; if missing/empty all active msgName subscriptions will be removed