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»Forums Index »Archive (2017 and earlier) »IQFeed Developer Support »Possible missing release note

Author	Topic: Possible missing release note (2 messages, Page 1 of 1)
taa_dtn -DTN Evangelist- Posts: 154 Joined: May 7, 2004	Posted: Feb 5, 2006 08:09 PM Msg. 1 of 2 More comments from my upgrade to 4.1.1.1... It appears that sometime during the upgrade from the 2.X series to the 4.X series, IQConnect began sending an !ENDMSG! message after error messages during historical data lookups. This is an incompatible change: In the old releases, you need to stop processing as soon as you receive an error; in the new releases, you have to continue processing until you handle the !ENDMSG!, otherwise it sits in the socket buffer and is misinterpreted as the reply to the next historical data request. This is extremely important if you make a bunch of history requests in a row and there's a non-negligible chance that a symbol has changed (!ERROR! Invalid symbol) or has no trades for the day (!ERROR! !NONE!) because it can throw off the results for all subsequent history requests. The new error message format is described correctly in the documentation, and is mentioned in the release notes. However, the release notes don't mention the additional !ENDMSG!. Allen
DTN_Steve_S -DTN Guru- Posts: 2093 Joined: Nov 21, 2005	Posted: Feb 6, 2006 01:33 PM Msg. 2 of 2 You are right. The release notes missed this change.