PHP IDE :: NuSphere Forums :: View topic - Error retrieving data from NuSOAP webservice

Posted: Wed Mar 07, 2007 3:19 pm

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

Posted: Thu Mar 08, 2007 6:06 am

Could you please post there getVentStatus's prototype (list of arguments) and SOAP client part where you call it?

Posted: Thu Mar 08, 2007 5:19 pm

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

Posted: Fri Mar 09, 2007 7:55 am

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

Posted: Sun Mar 11, 2007 1:41 pm

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

Posted: Mon Mar 12, 2007 4:38 pm

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.

Posted: Mon Mar 12, 2007 5:25 pm

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