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» How to check if Level 1 symbol is invalid?
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| Author | Topic: How to check if Level 1 symbol is invalid? (4 messages, Page 1 of 1) |
 camping89 -Interested User- Posts: 2 Joined: Jul 11, 2014 
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Posted: Jul 11, 2014 04:33 AM
Msg. 1 of 4
My question is same as topic name:
How to check if Level 1 symbol is invalid? I send wAAAA.TES\r\n as a watch command for example, but I don't receive anything from level 1 port. My expectation is some kind of messages like "Invalid Symbol" or I should check if AAAA.TES is valid before sending. By the way, what is different between watch(w) and trade(t) command? wMSFT and tMSFT... |
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DTN_Tim Walter -DTN Guru- Posts: 1238 Joined: Apr 25, 2006 
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Posted: Jul 11, 2014 08:04 AM
Msg. 2 of 4
Hello, you will get back a not found message. You could verify this in a telnet window as well.
wQPPG Q,QPPG,,Not Found,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, As to the (t)Watch vs the (w)Watch, the w is to watch everything, trades, bids, asks, etc. The t watch will only pull through trades, this would allow for easier processing of the data stream if you did not need the bid and ask prices. Tim Edited by DTN_Steve_S on Jul 11, 2014 at 08:16 AM |
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DTN_Steve_S -DTN Guru- Posts: 2093 Joined: Nov 21, 2005
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Posted: Jul 11, 2014 08:16 AM
Msg. 3 of 4
In addendum to Tim's reply about the format of the Invalid symbol message, the
Q,QPPG,,Not Found,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Format is for the IQFeed 4.9 protocol only. If you have set your protocol to 5.0 or greater you will get a n,QPPG message instead to indicate an invalid symbol. |
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camping89 -Interested User- Posts: 2 Joined: Jul 11, 2014
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Posted: Jul 13, 2014 08:54 PM
Msg. 4 of 4
Thanks a lot, I'm using IQFeed 5.1 protocol. And I can see the n,QPPG now.
This solved my problem. |
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