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jpaladin has contributed to 2 posts out of 21185 total posts
(0.01%) in 5,930 days (0.00 posts per day).
20 Most recent posts:
IQFeed Developer Support »
basic socket question Feb 2, 2008 09:36 AM
(Total replies: 1)
I am new to sockets, and figuring out this sample application code : while (true ) { line = in.readLine(); sout.write(line+"\r\n"); sout.flush(); if (line.trim().equals("x") ) {break;} } So, why does in.readLine() block, and what could it possibly be waiting for ? Setting a break point after in.readLine() it never hits. I guess socket code blocks by default when you tell it to read, and it is empty ? I see that "in" is a System.in socket, so I guess it is some kind of global server socket. When it gets something, it is reflected to the IQFeed socked that I watch for my data, so I would like to know what I might have to deal with while watching the data. if an "x" arrives my whole feed is going to be shutdown. So, I would like to better understand this code. Joe paladin
IQFeed Developer Support »
Incorrect Historical Data Time Stamping Feb 2, 2008 09:18 AM
(Total replies: 5)
If I read these posts correctly, the datafeed sends the actual trades, with the correct time stamps, but they don't always arrive in time stamp order ? I believe that my graphing code could tolerate this, since it just draws lines between the next two data points. However, this could throw a big wrench in my analysis routines which assume that ticks loaded to a vector are moving forward in time. I could add a method to reorder the ticks, which would be fine for graphing at the end of the day. Reordering would to be to expensive to apply in realtime though. I may need to add a filter that drops any back dated ticks before they get added to my tick stream Vector. This approach might also work for SierraChart. Joe paladin |
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