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"Interactive Brokers tick data was inconsistent, so I have switched to using DTN exclusively. It is great to no longer have to worry about my datafeed all day long." - Comment from Philippe
"I just wanted to let you know how fast and easy I found it to integrate IQFeed into our existing Java code using your JNI client. In my experience, such things almost never go so smoothly - great job!" - Comment from Nate
"Boy, probably spent a thousand hours trying to get ******* API to work right. And now two hours to have something running with IQFeed. Hmmm, guess I was pretty stupid to fight rather than switch all this time. And have gotten more customer service from you guys already than total from them… in five years." - Comment from Jim
"The people at Nirvana have very nice things to say about your company and I can see why! Price and service is a potent combination." - Comment from Ed
"I like you guys better than *******...much more stable and a whole lot fewer issues." - Comment from Philip
"I noticed that ******* quotes locked up shortly after the interest rate announcement yesterday while yours stayed stable." - Comment from Ron in Utah
"I have to tell you though that using the IQFeed API is about the easiest and cleanest I have seen for some time." - Comment from Jim
"I've been using Neoticker RT with IQFeed for two months, and I'm very happy with both of the products (I've had IQFeed for two years with very few complaints). The service from both companies is exceptional." - Comment from Public Forum
"There is no doubt that IQFeed is the best data provider. I am very satisfied with your services. And IQFeed is the only one that I would recommend to my friends. Now, most of them are using your product in China." - Comment from Zhezhe
"And by the way, have to say this. I love the IQFeed software. It's rock solid and it has a really nice API." - Comment from Thomas via RT Chat
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frankzhou has contributed to 15 posts out of 21194 total posts (0.07%) in 7,163 days (0.00 posts per day).

20 Most recent posts:
IQFeed Developer Support » where is the api document ? Sep 22, 2006 05:21 PM (Total replies: 2)

iqfeed4.0 dont install with api document as their old version?

where can I find it?

IQFeed Developer Support » Empty data May 6, 2005 12:36 PM (Total replies: 1)

today 1:35PM EST when i add a symbol to watchlist , i got the empty message

P,CYD,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,1,,,,,,,,,,,,,,,,

i restart iqfeed,nothing change.

after several try ,it return good message,but then empty again.

IQFeed Developer Support » IQFeed .NET C# sockets example using IQ32.dll Oct 27, 2004 03:36 PM (Total replies: 4)

good,do you have a example for history data?
thanks

IQFeed Developer Support » IQFeed history data limitation Oct 26, 2004 04:27 PM (Total replies: 0)

have a question for iqfeed client developer:
how many history request through socket 9100 can iqfeed client handle before it crash?
when test,what language do you use?

becos I am too frustrate by using c# to connect to iqfeed with socket.
(stream data is very stable,but the history socket not stable)
need some suggestion,do I need switch to com object? or it is my code's problem? or wait the next version?



Thanks a lot for help

IQFeed Developer Support » Data time saving Oct 26, 2004 04:11 PM (Total replies: 5)

yes,i tried vb com,it is correct,but when I using socket , it still wrong.

IQFeed Developer Support » Data time saving Oct 26, 2004 12:48 PM (Total replies: 5)

thanks,but why the 5 minutes bar time range is from 10:35 - 17:05 ?

it should be 9:35 - 16:35

IQFeed Developer Support » Data time saving Oct 25, 2004 07:15 PM (Total replies: 5)

today when I grad the five minutes bar,I found the first bar time is from
10:35 ,
usually it is start from 9:35

is it est time?

IQFeed Developer Support » IQLinkLauncher error report Oct 25, 2004 07:13 PM (Total replies: 2)

no,thanks

IQFeed Developer Support » IQLinkLauncher error report Oct 21, 2004 12:34 PM (Total replies: 2)

//////////////////////// C#
The instruction at "0x010d3199" referedced memory at "0x010d3199".
the momory could not be read
where run below code

private void button1_Click(object sender, System.EventArgs e)
{
for(int i=0;i<10;i++)
{
CCC ccc = new CCC();
ccc.Connect();
}

}
public class CCC
{
public void Connect()
{
TcpClient client = new TcpClient();
client .Connect("127.0.0.1",9100);

client.Close();
}
}

///////////////////////////
IQLinkLauncher MFC application has encountered a problem and needs to close.

private void button1_Click(object sender, System.EventArgs e)
{
for(int i=0;i<10;i++)
{
CCC ccc = new CCC();
ccc.Connect();
}

}
public class CCC
{
public void Connect()
{
TcpClient client = new TcpClient();
client .Connect("127.0.0.1",9100);
NetworkStream stream = client.GetStream();
stream.Close();
client.Close();
}
}

IQFeed Developer Support » Port 9100 problem Oct 20, 2004 04:50 PM (Total replies: 2)

yes,I using IQLink Launcher to launcher the iqconnect and iqlink

to get news story
in c#

I using tcpclient connect to 9100, send command "NN:(ID):(Type):(Date);" to 9100,
after that,i close the networkstream and tcpclient. then IQLink launcher crash,
but iqlink and iqconnect still ok,just can not connect to 9100 any more.

the other situation crash IQLauncher is When I open the connection to port 9100 when debug,before close tcpclient,I stop my program.

SO Now I just leave the networkstream open,only close the tcpclient after I done, it is ok.

Thanks for reply

IQFeed Developer Support » Port 9100 problem Oct 19, 2004 06:03 PM (Total replies: 2)

I using tcpip connect to 9100 to get news detail,
but found it is very easy to make iqlauncher crash,then I can not connect to 9100.

thanks for any suggestion

IQFeed Developer Support » IQFEED open a lot connection Oct 7, 2004 11:40 AM (Total replies: 2)

ok,thanks

IQFeed Developer Support » IQFEED open a lot connection Oct 6, 2004 05:40 PM (Total replies: 2)

every time after i request a history data,i open 9100,if i close the socket ,it will cause IQLauncher crash,so i just leave it.

when i using netstat,i saw huge list of 5009,9100 was in status "ESTABLISH"

I thought IQFeed never close thoese socket?

IQFeed Developer Support » best way to do this? Oct 6, 2004 04:59 PM (Total replies: 1)

I am using c# to connect to 5009 to get stream data and news
,and when news title coming,i using 9100 to get news detail,
but the 9100 cause IQLaunch crash ,after that,
the stream data still working,but cannot connect to 9100 unless restart iqlink and iqconnect

is there any solution?

Thanks for reply

IQFeed Developer Support » Port 9100 problem Oct 6, 2004 01:13 AM (Total replies: 0)

I connect to port 9100 to get history data,
after some request,maybe several hundred request,
then can't connect to port 9100 any more,I have to close iqfeed and iqlink and restart it.

I using iqfeed 2.3 now.
before when I using iqfeed2.2 ,it is slow but works fine.

thanks


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