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"Everything is working amazing now. I'm already impressed with the true-tick feed of IQFeed and it's ability to support my 480 symbol layout." - Comment from Tyler via Email
"After all the anxiety I had with my previous data provider it is a relief not to have to worry about data speed and integrity." - Comment from Eamonn
"Thanks for all of your help. Great customer service deserves to be recognized which one the reasons I've been a customer of DTN for over 10 years!" - Comment from Stuart
"Just a quick one to say I'm very impressed so far :) The documentation for developers is excellent and I've quickly managed to get an app written to do historical downloads. The system is very robust and pretty quick considering the extent of data that's available. The support guys have been very helpful too, in combination with the forums it's been plain sailing so far!" - Comment from Adam
"With HUGE volume on AAPL and RIMM for 2 days, everyone in a trading room was whining about freezes, crashes and lag with *******, RealTick, TS and Cyber. InvestorRT with IQFeed was rock solid. I mean SOLID!" - Comment from Public IRC Chat
"If you want customer service that answers the phone, your best bet is IQFeed. I cannot stop praising them or their technical support. They are always there for you, and they are quick. I have used ****** too but the best value is IQFeed." - Comment from Public Forum
"I like you guys better than *******...much more stable and a whole lot fewer issues." - Comment from Philip
"I ran your IQFeed DDE vs. my broker vs. a level II window for some slow-moving options. I would see the level II quote change, then your feed update instantaneously. My broker's DDE, however, would take as much as 30 seconds to update. I am not chasing milliseconds, but half a minute is unacceptable." - Comment from Rob
"I am very happy I changed. I love the product, but more so I am thrilled with Tech Support. You are knowledgeable, polite, pleasant and professional." - Comment from Pat
"I used to have *******, but they are way more money for the same thing. I have had no probs with data from DTN since switching over." - Comment from Public Forum Post
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20 Most recent posts:
IQFeed Developer Support » History Tick Data Dec 16, 2009 01:59 AM (Total replies: 3)

Ok. I tried this ""HTD,INTC,2,\r\n" and find only one day of data coming back. My socket receive loop is...Am I missing something ?

{
string strData = "";
string ConcatData = string.Empty;
int iEndMsg = -1;
while (iEndMsg == -1)
{
// initialize to sizeof inData to get into loop below
while (stream.DataAvailable)
{
byte[] inData = new byte[8097];
stream.Read(inData, 0, inData.Length);
strData = Encoding.ASCII.GetString(inData);
ConcatData += strData;

//Console.Write(ConcatData);
//Console.Write(strData);
}
iEndMsg = ConcatData.IndexOf("!ENDMSG!");
}

IQFeed Developer Support » History Tick Data Dec 15, 2009 06:08 PM (Total replies: 3)

If I want to specify one of the parameters, should I just have empty strings in the command request ? For example, Intel tick data for 2 days in descending order should be "HTD,INTC,2,,,,0,,,\r\n" ? Can anyone point me to the right syntax ? Thanks!

IQFeed Developer Support » C# samplem with tcp/ip Dec 15, 2009 01:56 PM (Total replies: 45)

Thanks Steve. I will take a look.

IQFeed Developer Support » C# samplem with tcp/ip Dec 15, 2009 01:17 PM (Total replies: 45)

Does anyone know if there is a c# sample to get historical data via sockets ? I only see c++ code in the directory. Thanks!

IQFeed Developer Support » Wannabe API user with question Dec 14, 2009 08:19 PM (Total replies: 5)

Thanks Jay. I will need to look into mine then. The other question is..Is there a real time availability of historical data for the day ? i.e let say I pick a stock of interest and I want to know the tick data from start of the trading session until the request time ? Is this do-able ? It sounded like it isn't possible.

IQFeed Developer Support » Wannabe API user with question Dec 14, 2009 06:44 PM (Total replies: 5)

I am interested in the API license (but have just sent the fax, but am going to wait) and have the following question.

The documentation says IQfeed dont allow watch and unwatch of symbols! Can anyone confirm what that means ? In my code, I want to dynamically select (alert may come from a different provider) a set of symbols and watch their tick and after some time, dismiss some of them and re-populate another list and so on..Is this not possible ? I dont know which ones I am going to watch and cannot make a long list to choose. Anyone ? Please let me know because I dont want to get the license if this is not possible..


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