How do I debug a php nusoap call requiring basic authentication that doesn't respond at all?

Question

I am trying to re-write a Drupal module that has fallen behind the API of the gateway it connects to.

A stripped back version of the code I think is causing the problem is as follows:

$namespace = ($this->testing) ? 'https://api.sandbox.ewaypayments.com/' : 'https://api.ewaypayments.com/';
$endpoint = $this->url;
$httpUsername = $this->user_name;
$httpPassword = $this->password;

$client = new nusoap_client($endpoint, TRUE);
$client->setCredentials($httpUsername, $httpPassword, 'basic');
$client->response_timeout = 50;
$result = $client->call($operation, array('request' => $params), $namespace);

The $result is consistently false. If I put anything like this into my code it also consistently returns empty:

$error = $client->getError(); 
watchdog('connection_message', $error);

I'm a bit out of my depth and without any error messages in my Apache logs or in the Drupal watchdog I cannot see a way forward.

score 9 · Accepted Answer · edited May 23 '17 at 12:22

1. Turn on PHP error reporting if it's not already on.

Check that the error_reporting, display_errors settings in your php.ini file are set to E_ALL and On respectively when you are developing locally. You can also add these directives at the beginning of your PHP script to set them at run time:

error_reporting(E_ALL);
ini_set('display_errors', 'On');

2. Catch NuSOAP errors like this:

$result = $client->call($operation, array('request' => $params), $namespace);
if ($client->fault) {
    echo 'Error: ';
    print_r($result);
} else {
    // check result
    $err_msg = $client->getError();
    if ($err_msg) {
        // Print error msg
        echo 'Error: '.$err_msg;
    } else {
        // Print result
        echo 'Result: ';
        print_r($result);
    }
}

3. Verify you are using the correct API parameters and endpoint:

From the eWAY API reference, your endpoints are:

https://api.ewaypayments.com/soap.asmx (production)
https://api.sandbox.ewaypayments.com/soap.asmx (sandbox)

4. Similar eWAY API projects that you can reverse-engineer:

Commerce eWAY for Drupal (last version is Mar. 2014)
eWAY-RapidAPI (uses JSON and cURL)
eWay-PHP-API (uses XML and cURL)
eWay Payment Gateway (uses SOAPClient)

Yeah it's Commerce eWAY for Drupal that I'm trying to update, it doesn't have support for the Rapid API and tokens don't currently seem to work. — Darvanen, May 04 '15 at 03:29
Your endpoint may be wrong, but you should still receive some error messages. Try checking for that 'fault' flag that I put in my answer as well as enabling PHP errors just in case. — Drakes, May 04 '15 at 03:32
Your code for catching errors did the trick, thanks very much! Somehow my authentication isn't working, now I know where to look. Answer accepted. — Darvanen, May 04 '15 at 03:40
Awesome! I went through the NuSoap source to find the way it reports errors. Glad to be of help. — Drakes, May 04 '15 at 03:42

score 1 · Answer 2 · answered May 04 '15 at 01:32

There are a couple of things I would like to say in this case.

First, why do you have to use that library ? You can use Zend_Soap_Client (if you don't have it you can install it using composer:

http://framework.zend.com/downloads/composer (look for zendframework/zend-soap)

Then, you can download a trial version of PHPStorm. Its debugging tools when used with http://xdebug.org are really awesome, you can inspect the entire variable and environment space in runtime.

Finally, you can use a friendly error managing tool like http://raygun.io, you insert a few lines of code, create a trial account in there, and in minutes you get all errors that are happening in your application.

In your case, you can see for example the current value of $operation, which seems the function being called on the webservice.

Here's the code for inspecting all functions being offered in a webservice using Zend_Soap_Client:

$endpoint = 'http://your.example.endpoint/?wsdl';
$soapClient = new Zend_Soap_Client($endpoint);
$functions  = $soapClient->getFunctions();
var_dump($functions);

Thanks guys, hadn't thought of updating the Soap implementation. Certainly worth a shot. — Darvanen, May 04 '15 at 01:36

score 1 · Answer 3 · answered May 04 '15 at 03:19

1

Since you are using SOAP requests your endpoint is incorrect, it should be https://api.ewaypayments.com/soap.asmx or https://api.sandbox.ewaypayments.com/soap.asmx

answered May 04 '15 at 03:19

Jonathan

2,778
13
23

Ah yes, of course, those values were an attempt to get some kind of error out of the system. They did end in soap.asmx originally, thanks for pointing it out. – Darvanen May 04 '15 at 03:34
Oh, my bad, the endpoint is set much earlier in the code and stored in `$this->url;` the values are as you have described. Looks like the namespace shouldn't have soap.asmx at the end... – Darvanen May 04 '15 at 03:36
can you just scrap the namespace it really shouldn't be needed. – Jonathan May 04 '15 at 03:37

score 0 · Answer 4 · answered Jul 06 '15 at 11:18

For better performance you may think to disable nusoap debugging.

To check, edit the /include/nusoap/nusoap.php file and set the debug level to 0, like this:

['nusoap_base']->globalDebugLevel = 0;

One step even further is to remove all lines that start with:

$this->debug(

or

$this->appendDebug(

Source:

http://kb.omni-ts.com/entry/245/

score 0 · Answer 5 · answered Aug 25 '15 at 01:08

0

You could give this module a try: https://www.drupal.org/project/eway_integration

We are currently working with eWay to test this module together. It works with Drupal Commerce and implements eWay's RAPID 3.1 API and is PCI compliant.

answered Aug 25 '15 at 01:08

Invisigoth

121
1
3

How do I debug a php nusoap call requiring basic authentication that doesn't respond at all?

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