How can I set delay time to POST on tcp/ip

Question

I tried to convert to Labview from PHP below source.
but I couldn't check EOF on Labview as php source.
function http_post($host, $path, $data)
$http_response = '';
$content_length = strlen($data);
$fp = fsockopen($host, 80);
fputs($fp, "POST $path HTTP/1.1\r\n");
fputs($fp, "Host: $host\r\n");
fputs($fp, "Content-Type: application/x-www-form-urlencoded\r\n");
fputs($fp, "Content-Length: $content_length\r\n");
fputs($fp, "Connection: close\r\n\r\n");
fputs($fp, $data);
while (!feof($fp))
$http_response .= fgets($fp, 128);
fclose($fp);
return $http_response;
?>
Attachments:
tcp_post.vi ‏28 KB

Answer 1

Hello mostech,
I, personally, am not very familiar with PHP, but I am somewhat familiar with ASP, http, etc. (Same idea, different language). From the code you posted, it looks like you are just trying to read the HTTP response from whatever server you are posting data to. To do this in LabVIEW, you will use TCP Read; and rather than constantly checking explicitly for the EOF, you can let the TCP Read error out. In other words, keep calling TCP Read in a while loop (like you have in your PHP code), and make the stop condition be a TCP Read error.
I found an example program on our website submitted by another customer. It looks like it is doing something similar:
Example HTTP Protocols
http://sine.ni.com/apps/we/niepd_web_display.display_epd4?p_guid=CA9910104C671493E034080020E74861&p_...
Hope this helps!
Charlie S.
Visit ni.com/gettingstarted for step-by-step help in setting up your system