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Error retrieving data from NuSOAP webservice


Joined: 08 Mar 2007
Posts: 5
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I'm working on writing a webservice that queries a Ventrilo voice server & returns a list of channels & users for that server. I have written this as a stand-alone page (so the functionality of the page is working), but I'm interested in breaking it out into a webservice.

So, after stumbling around, I found NuSOAP & started messing with it. I'm normally a .Net developer, but have been using PHP for a couple months now, so please don't leave any "simple" information out. I may have missed something basic.

Anyway, the problem stems from the fact that the data I retrieve for the status has a "recursive" structure:
Main Channel
- User1
- User2
- SubChannel1
--- User3
--- SubChannel2
----- User4

I need to find a way to pull all of this back & still keep the hierarchy of the channels.

So, I created the following "ComlexTypes" in my webservice:

Code:
$server->wsdl->addComplexType(
  'ventUser',
  'complexType',
  'struct',
  'all',
  '',
  array(
    'userName' => array('name' => 'userName',
         'type' => 'xsd:string'),
    'userFlags' => array('name' => 'userFlags',
         'type' => 'xsd:string'),
    'userComments' => array('name' => 'userComments',
        'type' => 'xsd:string')
  )
);

$server->wsdl->addComplexType(
  'ventChannel',
  'complexType',
  'struct',
  'all',
  '',
  array(
    'channelName' => array('name' => 'channelName',
         'type' => 'xsd:string'),
    'channelLinkURL' => array('name' => 'channelLinkURL',
         'type' => 'xsd:string'),
    'channelUsers' => array('name' => 'channelUsers',
         'type' => 'tns:ventUser[]'),
    'channelSubchannels' => array('name' => 'channelSubchannels',
        'type' => 'tns:ventChannels[]')
  )
);

$server->wsdl->addComplexType(
  'ventChannels',
  'complexType',
  'array',
  '',
  'SOAP-ENC:Array',
  array(),
  array(
    array('ref' => 'SOAP-ENC:arrayType',
         'wsdl:arrayType' => 'tns:ventChannel[]')
  ),
  'tns:ventChannel'
);

I then call register my function:
Code:
$server->register('getVentStatus',
   array('inputStringArray'=>'tns:ArrayOfstring'),
   array('return'=>'tns:ventChannels'),
   'http://soapinterop.org/');

If I attempt to call this page I get the following error:
"Fault: Array ( [faultcode] => Server [faultactor] => [faultstring] => unable to serialize result [detail] => )"
http://mywebserver/VentStatusService/VentStatusClient.php

On a different site, I found a function to encode a multi-dimensional array into a string & then to decode it. If I use this method, you can view the data that my function is trying to send back.
http://mywebserver/VentStatusService/VentStatusClientEncoded.php

So, I'm not sure if that's enough information, but I hate to babble on too much. Please let me know if I've made a simple mistake, or if you need more information.

Thanks,
Ian Cazabat
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Joined: 13 Jul 2003
Posts: 7861
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Could you please post there getVentStatus's prototype (list of arguments) and SOAP client part where you call it?

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Joined: 08 Mar 2007
Posts: 5
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Thanks for your response & I hope this is what you're wanting:
Code:
function getVentStatus( $serviceParams ) { //input array or parameters
   $stat->m_cmdhost   = $serviceParams['serverName']; //$serverAddress;
   $stat->m_cmdport   = $serviceParams['queryPort']; //$serverPort;   // Port to be statused.
   $stat->m_cmdpass   = $serviceParams['serverPass']; //$serverPwd;   // Status password if necessary.
 (additional code removed for brevity)
}


Code:
$serviceParams = array('serverName' => 'vent.lonecoders.info', 'queryPort' => '3784', 'serverPass'=>'');
$result = $client->call(
   'getVentStatus',   // method name
   array('serviceParams' => $serviceParams)   // input parameters
);


Again, it's not that I'm stupid, just "more than a little" confused. Wink

Thanks Again,
Ian
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Quote:
array('inputStringArray'=>'tns:ArrayOfstring'),

I can't find your definition for ArrayOfstring

Quote:
'type' => 'tns:ventChannels[]')

what did you mean by these brackets?

With example below it works quite good (I +changed+ input type as I found no definition in your sample):

SERVER (C:\Program Files\nusphere\PhpED\projects\tst.php):
Code:
<?

require_once('nusoap.php');
$server = new soap_server;
$server->configureWSDL('Test','http://soapinterop.org/');
$server->wsdl->addComplexType(
   'ventUser',
   'complexType',
   'struct',
   'all',
   '',
   array(
      'userName' => array('name' => 'userName',
             'type' => 'xsd:string'),
      'userFlags' => array('name' => 'userFlags',
             'type' => 'xsd:string'),
      'userComments' => array('name' => 'userComments',
            'type' => 'xsd:string')
   )
);

$server->wsdl->addComplexType(
   'ventChannel',
   'complexType',
   'struct',
   'all',
   '',
   array(
      'channelName' => array('name' => 'channelName',
             'type' => 'xsd:string'),
      'channelLinkURL' => array('name' => 'channelLinkURL',
             'type' => 'xsd:string'),
      'channelUsers' => array('name' => 'channelUsers',
             'type' => 'tns:ventUser'),
      'channelSubchannels' => array('name' => 'channelSubchannels',
            'type' => 'tns:ventChannels')
  )
);

$server->wsdl->addComplexType(
   'ventChannels',
  'complexType',
  'array',
  '',
  'SOAP-ENC:Array',
  array(),
  array(
    array('ref' => 'SOAP-ENC:arrayType',
         'wsdl:arrayType' => 'tns:ventChannel[]')
  ),
  'tns:ventChannel'
);

function getVentStatus( $serviceParams ) { //input array or parameters
  return array(0 => array('channelName' => 'samp of channelName',
                          'channelLinkURL' => 'samp of channelLinkURL',
                          'channelUsers' => array('userName' => 'samp of userName',
                                                                           'userFlags' => 'samp of userFlags',
                                                                           'userComments' => 'samp of userComments'
                                                                         ),
                                       'channelSubchannels' => array()
                                     ),
                      1 => array('channelName' => 'samp of channelName2',
                                       'channelLinkURL' => 'samp of channelLinkURL2',
                                       'channelUsers' => array('userName' => 'samp of userName2',
                                                                           'userFlags' => 'samp of userFlags2',
                                                                           'userComments' => 'samp of userComments2'
                                                                         )
                                     ),
                                     'channelSubchannels' => array()
                     );
}

$server->register('getVentStatus',
    array('inputStringArray'=>'xsd:string'),
    array('return'=>'tns:ventChannels'),
    'http://soapinterop.org/');


   $HTTP_RAW_POST_DATA = isset($HTTP_RAW_POST_DATA) ?
       $HTTP_RAW_POST_DATA : '';
   $server->service($HTTP_RAW_POST_DATA);
?>


CLIENT:
Code:
<?php
   require_once('nusoap.php');
   $wsdl = "http://localhost:8080/file:/C:/Program Files/nusphere/PhpED/projects/tst.php?wsdl";
   $client = new soapclient($wsdl,"wsdl");
   $result = $client->call(
    'getVentStatus',   // method name
    array(array('serviceParams' => 'sample'))   // input parameters
);
?>
and it returned $result with arrays returned by the server's getVentStatus

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Joined: 08 Mar 2007
Posts: 5
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Thanks a bunch for your input!!! You helped me along the path to finding what was wrong. As it turned out, I was returning a "malformed" array. After running your code, I could see the array structure should be like this:
Code:
Array
(
    [0] => Array
        (
            [channelName] => *samp of channelName
            [channelLinkURL] => samp of channelLinkURL
            [channelUsers] => Array
                (
                    [userName] => samp of userName
                    [userFlags] => samp of userFlags
                    [userComments] => samp of userComments
                )

            [channelSubchannels] => Array
                (
                )

        )

    [1] => Array
        (
            [channelName] => samp of channelName2
            [channelLinkURL] => samp of channelLinkURL2
            [channelUsers] => Array
                (
                    [userName] => samp of userName2
                    [userFlags] => samp of userFlags2
                    [userComments] => samp of userComments2
                )

            [channelSubchannels] => Array
                (
                    [0] => Array
                        (
                            [channelName] => samp of subChannelName3
                            [channelLinkURL] => samp of subChannelLinkURL3
                            [channelUsers] => Array
                                (
                                    [userName] => samp of subChanUserName4
                                    [userFlags] => samp of subChanUserFlags4
                                    [userComments] => samp of subChanUserComments4
                                )

                        )

                )

        )

)

Where mine was coming back like this:
Code:
Array
(
    [channelName] => MyVent
    [channelLinkURL] => ventrilo://myvent.com/servername=MyVent
    [channelUsers] =>
    [channelSubchannels] => Array
        (
            [0] => Array
                (
                    [channelName] => Lobby #1
                    [channelLinkURL] => ventrilo://myvent.com/servername=MyVent&channelname=Lobby #1
                    [channelUsers] =>
                    [channelSubchannels] => Array
                        (
                        )
   
                )
   
            [1] => Array
                (
                    [channelName] => Lobby #2
                    [channelLinkURL] => ventrilo://myvent.com/servername=MyVent&channelname=Lobby #2
                    [channelUsers] =>
                    [channelSubchannels] => Array
                        (
                        )
   
                )
   
            [2] => Array
                (
                    [channelName] => SRA1
                    [channelLinkURL] => ventrilo://myvent.com/servername=MyVent&channelname=SRA1
                    [channelUsers] =>
                    [channelSubchannels] => Array
                        (
                        )
   
                )
   
            [3] => Array
                (
                    [channelName] => PVP #1
                    [channelLinkURL] => ventrilo://myvent.com/servername=MyVent&channelname=PVP #1
                    [channelUsers] =>
                    [channelSubchannels] => Array
                        (
                        )
   
                )
   
            [4] => Array
                (
                    [channelName] => PVP #2
                    [channelLinkURL] => ventrilo://myvent.com/servername=MyVent&channelname=PVP #2
                    [channelUsers] =>
                    [channelSubchannels] => Array
                        (
                        )
   
                )
   
            [5] => Array
                (
                    [channelName] => PVP #3
                    [channelLinkURL] => ventrilo://myvent.com/servername=MyVent&channelname=PVP #3
                    [channelUsers] =>
                    [channelSubchannels] => Array
                        (
                        )
   
                )
   
        )
   
)

Needless to say, the FIRST element I passed in, wasn't an element in an array & so that screwed up the serialization. So, thank you VERY MUCH for setting me on the right path! It was a simple solution, once I could rule out what WASN'T wrong. Wink

Thanks Again,
Ian
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Posts: 7861
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you're welcome!

BTW, I'd highly appreciate if you post a sample (minimized) version of your script to let people see how to return arrays and structures.

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Will do! I'm still in the process of cleaning up my code & have made several changes to "standardize" my implementation. I'm going to be consuming this from an ASP.Net client, so I've got a couple more hurdles to jump through. Wink
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Error retrieving data from NuSOAP webservice
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