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Problem with Twilio StatusCallback. Logs show a POST but something is amiss

Posted on 2012-12-23
Medium Priority
Last Modified: 2012-12-23
I've been trying to see what is wrong for literally hours and still can't figure out why its not working.
I'm hoping if I post my complete code, perhaps someone will see something I've missed:

1) I am receiving a Statuscallback when checking my logs. Here is the latest I've tried (so I see my callback is working/this is direct from my logs): - - [22/Dec/2012:13:16:01 -0400] "POST /app/assets/phone/contests/text_complete.php?contestid=307&account_id=17&callername=NS+Wireless+Call&callercity=HALIFAX&callerstate=NS HTTP/1.1" 200 160 "-" "TwilioProxy/0.7"

2) The total code for text_complete.php code is this:

	$callsid = $_REQUEST['SmsSid'];
	$body = $_REQUEST['Body'];
	include '../../db/config.php';
	include '../../db/functions.php';

//make pretty looking phone number for table display using function
	$fromcallerdisplay = FromCallerDisplay($fromcaller);
	$tocallerdisplay = ToCallerDisplay($to);

//adjust time for incoming calls from timezone using function
$newtime =  GetRightTime($account_id);

$result = mysql_query("SELECT PhoneRate, account_id FROM numbers WHERE PhoneNumber = '$fromcaller' AND PhoneType = 2 LIMIT 1");
while ($row = mysql_fetch_array($result)) {
$phonerate = $row["PhoneRate"];
$account_id = $row["account_id"];

$sql="INSERT INTO callers (account_id, CallType, CallDirection, ContestId, CallTo, ToCallerDisplay, CallSid, CallerName, CallerCity, CallerState, FromCaller, FromCallerDisplay, Body, CallStatus, CallDate, CallDuration, CallCost, SubscribeStatus)VALUES('$account_id','1','Outgoing','$contestid','$to','$tocallerdisplay','$callsid','$callername','$callercity','$callerstate','$fromcaller','$fromcallerdisplay','$body','$callstatus','$newtime','1','$phonerate','Pending')";

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When I go through the steps in my application, I see no errors in my logs and I see the statuscallback executed in the logs as shown at the top of the page.

If I simply try this url with the bare minimum of a variable attached: http://mydomain.com/app/assets/phone/contests/text_complete.php?account_id=17

The query will work and it will insert into my database the bare minimum. (I was doing this to double-check my query can insert OK). So it seems if even just the account_id is passed, I'll get an insert into my db.

When I plug in the test url above as my statuscallback url with just the required account_id... it doesn't work.

I can see the now shortened statuscallback in my logs show up... but for some reason it won't insert a record.

I simply can't figure out why it isn't inserting a record, even when I do the bare minimum url as my Statuscallback.

Is there some kind of permissions thing perhaps? Where you can visit the url and it will insert, but a callback won't insert?? Just trying to find some new direction to investigate.

Just in case, this is what my StatusCallback code looks like (maybe in case there is something wrong with the way its being formed?)
$subscribestatusmessage = "Hello from $company_name in $city! To subscribe, reply back with the word 'GO' and you are in.";

			/* Include the Twilio PHP library */
			require "../api/Twilio.php";

			/* Set our AccountSid and AuthToken */
			$AccountSid = "mysid";
			$AuthToken = "mytoken";
			$client = new Services_Twilio($AccountSid, $AuthToken);
   			$options = array("StatusCallback" => "http://mydomain.com/app/assets/phone/contests/text_complete.php?contestid=".urlencode($contestid)."&account_id=".urlencode($account_id)."&callername=".urlencode($callername)."&callercity=".urlencode($callercity)."&callerstate=".urlencode($callerstate));

   			$sms = $client->account->sms_messages->create(

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Question by:tjyoung
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LVL 111

Accepted Solution

Ray Paseur earned 2000 total points
ID: 38717017
Scanning down from the top...

...HALIFAX&callerstate=NS HTTP/1.1 This looks slightly suspect.  Is that supposed to be a blank in a URL?

In text_complete.php you might want to add these two lines at the top:


and then somewhere near the bottom add something like this:

$buf = ob_get_clean();
mail('you@your.org', 'text_complete.php', $buf);

The effect of this will be to capture all the messages inside that script and send them to you via email.  You may find something interesting in there!

Lines of code like this are a sure recipe for catastrophe:

$result = mysql_query(...
while ($row = mysql_fetch_array($result))

The mysql_query() function produces a return value, and your script must test the return value for success or failure!  MySQL is not a black box; it can and will fail for reasons that are outside of your control, and your programming must catch these failures and handle them somehow, even if handling only means sending you the error message.  Reconstruct your data base calls using a pattern like this, so you can see the query and the failure at the same time.

$sql = "SELECT PhoneRate, account_id ...
$res = mysql_query(...
if (!$res) die("FAIL: $sql BECAUSE OF: " . mysql_error());
while ($row = mysql_fetch_assocr($res))...

A similar test needs to be made for the INSERT queries - as written they can fail silently and you'll not get a clue as to what went wrong.

Hope that gives you some ideas to start the investigation, ~Ray

Author Closing Comment

ID: 38717027
Thanks gives me plenty to work with.
LVL 111

Expert Comment

by:Ray Paseur
ID: 38717057
Thanks for the points and thanks for using EE.  And Merry Christmas! ~Ray

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