DTN IQFeed, DTN.IQ, DTN ProphetX Support Forums

Join the 80,000 other DTN customers who enjoy the fastest, most reliable data available. There is no better value than DTN!

(Move your cursor to this area to pause scrolling)

"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

"I just wanted to say how happy I am with your service. I was able to download the API docs last week and I was able to replicate Interactive Brokers historical bar queries and realtime bar queries over the weekend. That was about one of the fastest integrations that I've ever done and it works perfectly!!!!" - Comment from Jason via Email

"I like you guys better than *******...much more stable and a whole lot fewer issues." - Comment from Philip

"I just wanted to let u know that your data feed/service is by far the best!!! Your unfiltered tick data is excellent for reading order flow and none of your competitors delivers this quality of data!" - Comment from Peter via Email

"You are much better than lawyers or the phone company because you answer the phone when I call! I just love your customer service." - Comment from Isreal

"It’s so nice to be working with real professionals!" - Comment from Len

"If someone needs the best quality data and backfill beyond what their broker provides at a rate that is the best in the industry, I highly recommend IQFeed." - Comment from Josh via Public Forum

"IQ feed works very well, does not have all of the normal interruptions I have grown used to on *******" - Comment from Mark

"I have been using IQFeed now for a few years in MultiCharts and I have zero complaints. Very, very rare to have any data hiccups or anything at all go wrong." - Comment from Public Forum

"Thank you so much - awesome feed, awesome service!" - Comment from Greg via Email

2009-02-20 23:44:22,2.10,1.68,1.68,1.97,308,0,
2009-02-19 23:44:22,2.22,1.94,2.22,1.94,176,0,
2009-02-18 23:44:22,2.36,2.09,2.12,2.09,225,0,
2009-02-17 23:44:22,2.36,2.04,2.04,2.14,298,0,
2009-02-13 23:44:22,3.20,3.10,3.20,3.19,52234,0,
!ENDMSG!,

2009-02-20 23:44:22,2.10,1.68,1.68,1.97,308,495,
2009-02-19 23:44:22,2.22,1.94,2.22,1.94,176,415,
2009-02-18 23:44:22,2.36,2.09,2.12,2.09,225,369,
2009-02-17 23:44:22,2.36,2.04,2.04,2.14,298,215,
2009-02-13 23:44:22,3.20,3.10,3.20,3.19,52234,2332,
!ENDMSG!,

/**
* Connects to the historical quote feed at port 9100.
*
* @param s Reference to a SOCKET instance used to
* maintain the socket connection.
*
* @returns True if socket connected, False otherwise
*/
bool ConnectToHistorical(SOCKET& s)
{
sockaddr_in addr;
bool bConnected = false;

// set the address to localhost:9100
addr.sin_family = AF_INET;
addr.sin_port = htons(9100);
addr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
memset(&addr.sin_zero, 0, sizeof(addr.sin_zero));

// connect to the server
if (connect(s,(struct sockaddr*)&addr,sizeof(addr))==0)
{
bConnected = true;
}

return bConnected;
}

/**
* Opens a new socket for each history request and doesn't read all of the data
* before closing the socket. This tends to leave sockets open in the
* iqconnect.exe application which shows up as an excessive number of threads
* in the Windows task manager.
*/
void ThreadLeakTest()
{
const size_t uTEMP_SIZE = 1024*16;
SOCKET sHistoricalSocket;
char achTemp[uTEMP_SIZE];

// Create a socket and attach to the historical data feed
sHistoricalSocket = socket(AF_INET,SOCK_STREAM,0);

if (sHistoricalSocket != INVALID_SOCKET)
{
if ( !ConnectToHistorical(sHistoricalSocket) )
{
cerr << "Unable to connect to historical socket" << endl;
return;
}

// Request data over the historical port
strncpy(achTemp,"HD,MSFT,10;",uTEMP_SIZE);
send(sHistoricalSocket, achTemp, strlen(achTemp), 0);

// As of this morning at 2006-04-10 08:28, there will be 652 bytes
// in the response message.

// Wait 1 second for data to come in
Sleep(1000);

// Retrieve up to 100 bytes of the 652-byte response
(void)recv(sHistoricalSocket,achTemp,100,0);

// Close the history socket
closesocket(sHistoricalSocket);
}
}

TX> HD,MSFT,10,[Request-Sequence];
RX> !BEGIN_MSG! Request Sequence<CR><LF>
RX> Time Stamp, High, Low, Open, Close, Volume, OpenInterest<CR><LF>
. . .
RX> Time Stamp, High, Low, Open, Close, Volume, OpenInterest<CR><LF>
<CR><LF>!ENDMSG!<CR><LF>