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»Forums Index »Archive (2017 and earlier) »Data and Content Support »TCPIP streaming data - What is a "P" message?

Author	Topic: TCPIP streaming data - What is a "P" message? (2 messages, Page 1 of 1)
sasha -Interested User- Posts: 54 Joined: Jul 21, 2004	Posted: Jul 28, 2004 05:13 PM Msg. 1 of 2 Being new to the API, I'm using the IQExplorer tool for this. Forgive me if it is in the documentation or forums but I have searched and cannot find the reason/description of a "P" message in the streaming session. It has the same format as the "Q" Update message. After watching a symbol using the IQExplorer tool to send the request, the following mesages are seem to be received in all cases: P,JDSU,F,.... F,JDSU,0F,.... P,JDSU,0F,.... Q,JDSU,F,.... Is there anything special about these two "P" messages or can I treat them like a "Q" Update message?
LonnieS -King of IQ Development- Posts: 127 Joined: Jun 2, 2004	Posted: Jul 30, 2004 07:35 AM Msg. 2 of 2 The P message is a summary message it is used to initially establish the current market values (this is what you are seeing) and to provide corrections and updates not generated by market action. Q messages are generally market generated messages, trades, quotes, volume adjustments, etc. The P message is a snapshot of the current market values. Values should be updated but a P message should not generate a historical datapoint, should not update direction indicators (except for those explicitly set), and should not recalculate values. For instance, the trade volume in a P message should not be added to the total volume (it already has been), it simply represents the last trade volume received. P messages have the same fields as the Q message. Lonnie Shumate Development Manager, IQ Systems DTN Market ACCESS