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Client.php
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Client.php
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<?php
/*
====================================================================
Original EULA
====================================================================
NuSOAP - Web Services Toolkit for PHP
Copyright (c) 2002 NuSphere Corporation
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
The NuSOAP project home is:
http://sourceforge.net/projects/nusoap/
The primary support for NuSOAP is the Help forum on the project home page.
If you have any questions or comments, please email:
Dietrich Ayala
http://dietrich.ganx4.com/nusoap
NuSphere Corporation
http://www.nusphere.com
*/
/*
* Some of the standards implmented in whole or part by NuSOAP:
*
* SOAP 1.1 (http://www.w3.org/TR/2000/NOTE-SOAP-20000508/)
* WSDL 1.1 (http://www.w3.org/TR/2001/NOTE-wsdl-20010315)
* SOAP Messages With Attachments (http://www.w3.org/TR/SOAP-attachments)
* XML 1.0 (http://www.w3.org/TR/2006/REC-xml-20060816/)
* Namespaces in XML 1.0 (http://www.w3.org/TR/2006/REC-xml-names-20060816/)
* XML Schema 1.0 (http://www.w3.org/TR/xmlschema-0/)
* RFC 2045 Multipurpose Internet Mail Extensions (MIME) Part One: Format of Internet Message Bodies
* RFC 2068 Hypertext Transfer Protocol -- HTTP/1.1
* RFC 2617 HTTP Authentication: Basic and Digest Access Authentication
*/
/**
* =======================================================================
* PHP 5 Rewrite
* =======================================================================
*
* @author Daniel Carbone ([email protected])
* @version 1.0
* @link https://github.com/dcarbone
*
* This rewrite is intended to bring the NuSOAP library up to more modern PHP
* standards, including the removal of the use of $GLOBALS and same-name
* class constructors.
*
* It also implements Namespacing to keep things clean
*
* For now additional functionality is not the focus, this is a
* modernization effort only.
*
*/
namespace NuSOAP;
/**
*
* [nu]soapclient higher level class for easy usage.
*
* usage:
*
* // instantiate client with server info
* $soapclient = new Client( string path [ ,mixed wsdl] );
*
* // call method, get results
* echo $soapclient->call( string methodname [ ,array parameters] );
*
* // bye bye client
* unset($soapclient);
*
* @author Dietrich Ayala <[email protected]>
* @author Scott Nichol <[email protected]>
* @author Daniel Carbone <[email protected]>
*/
class Client extends Base
{
/**
* Username for HTTP authentication
* @public string
*/
public $username = '';
/**
* Password for HTTP authentication
* @public string
*/
public $password = '';
/**
* Type of HTTP authentication
* @public string
*/
public $authtype = '';
/**
* Certification for HTTP SSL authentication
* @var array
*/
public $certRequest = array();
/**
* SOAP headers in request (text)
* @var boolean
*/
public $requestHeaders = false;
/**
* SOAP headers from response (incomplete namespace resolution)
* @var string
*/
public $responseHeaders = '';
/**
* SOAP Header from response
* @var [type]
*/
public $responseHeader = NULL;
/**
* SOAP body response portion (incomplete namespace resolution)
* @var string
*/
public $document = '';
/**
* [$endPoint description]
* @var [type]
*/
public $endPoint;
/**
* overrides WSDL endPoint
* @var string
*/
public $forceEndpoint = '';
/**
* [$proxyHost description]
* @var string
*/
public $proxyHost = '';
/**
* [$proxyPort description]
* @var string
*/
public $proxyPort = '';
/**
* [$proxyUsername description]
* @var string
*/
public $proxyUsername = '';
/**
* [$proxyPassword description]
* @var string
*/
public $proxyPassword = '';
/**
* port name used in WSDL
* @var string
*/
public $portName = '';
/**
* character set encoding of incoming (response) messages
* @var string
*/
public $xml_encoding = '';
/**
* [$httpEncoding description]
* @var boolean
*/
public $httpEncoding = false;
/**
* HTTP connection timeout
* @var integer
*/
public $timeout = 0;
/**
* HTTP response timeout
* @var integer
*/
public $responseTimeout = 30;
/**
* soap|wsdl, empty for WSDL initialization error
* @var string
*/
public $endPointType = '';
/**
* [$persistentConnection description]
* @var boolean
*/
public $persistentConnection = false;
/**
* HTTP request
* @var string
*/
public $request = '';
/**
* HTTP response
* @var string
*/
public $response = '';
/**
* SOAP payload of response
* @var string
*/
public $responseData = '';
/**
* Cookies from response or for request
* @var array
*/
public $cookies = array();
/**
* toggles whether the parser decodes element content with utf8_decode()
* @var boolean
*/
public $decodeUTF8 = true;
/**
* WSDL operations, empty for WSDL initialization error
* @var array
*/
public $operations = array();
/**
* User-specified cURL options
* @var array
*/
public $curlOptions = array();
/**
* WSDL operation binding type
* @var string
*/
public $bindingType = '';
/**
* whether to always try to use cURL
* @var boolean
*/
public $useCurl = false;
/**
* NuSOAP\Fault object
* @var [type]
*/
public $fault = null;
/**
* constructor
*
* @param mixed $endPoint SOAP server or WSDL URL (string), or wsdl instance (object)
* @param mixed $wsdl optional, set to 'wsdl' or true if using WSDL
* @param string $proxyHost optional
* @param string $proxyPort optional
* @param string $proxyUsername optional
* @param string $proxyPassword optional
* @param integer $timeout set the connection timeout
* @param integer $responseTimeout set the response timeout
* @param string $portName optional portName in WSDL document
* @access public
*/
public function __construct(
$endPoint,
$wsdl = false,
$proxyHost = false,
$proxyPort = false,
$proxyUsername = false,
$proxyPassword = false,
$timeout = 0,
$responseTimeout = 30,
$portName = '')
{
parent::__construct();
$this->endPoint = $endPoint;
$this->proxyHost = $proxyHost;
$this->proxyPort = $proxyPort;
$this->proxyUsername = $proxyUsername;
$this->proxyPassword = $proxyPassword;
$this->timeout = $timeout;
$this->responseTimeout = $responseTimeout;
$this->portName = $portName;
$this->debug("ctor wsdl=$wsdl timeout=$timeout responseTimeout=$responseTimeout");
$this->appendDebug('endPoint=' . $this->varDump($endPoint));
// make values
if ($wsdl)
{
if (is_object($endPoint) && (get_class($endPoint) == 'wsdl'))
{
$this->wsdl = $endPoint;
$this->endPoint = $this->wsdl->wsdl;
$this->wsdlFile = $this->endPoint;
$this->debug('existing wsdl instance created from ' . $this->endPoint);
$this->checkWSDL();
}
else
{
$this->wsdlFile = $this->endPoint;
$this->wsdl = null;
$this->debug('will use lazy evaluation of wsdl from ' . $this->endPoint);
}
$this->endPointType = 'wsdl';
}
else
{
$this->debug("instantiate SOAP with endPoint at $endPoint");
$this->endPointType = 'soap';
}
}
/**
* calls method, returns PHP native type
*
* @param string $operation SOAP server URL or path
* @param mixed $params An array, associative or simple, of the parameters
* for the method call, or a string that is the XML
* for the call. For rpc style, this call will
* wrap the XML in a tag named after the method, as
* well as the SOAP Envelope and Body. For document
* style, this will only wrap with the Envelope and Body.
* IMPORTANT: when using an array with document style,
* in which case there
* is really one parameter, the root of the fragment
* used in the call, which encloses what programmers
* normally think of parameters. A parameter array
* *must* include the wrapper.
* @param string $namespace optional method namespace (WSDL can override)
* @param string $soapAction optional SOAPAction value (WSDL can override)
* @param mixed $headers optional string of XML with SOAP header content, or array of soapval objects for SOAP headers, or associative array
* @param boolean $rpcParams optional (no longer used)
* @param string $style optional (rpc|document) the style to use when serializing parameters (WSDL can override)
* @param string $use optional (encoded|literal) the use when serializing parameters (WSDL can override)
* @return mixed response from SOAP call, normally an associative array mirroring the structure of the XML response, false for certain fatal errors
* @access public
*/
public function call(
$operation,
$params = array(),
$namespace = 'http://tempuri.org',
$soapAction = '',
$headers = false,
$rpcParams = null,
$style = 'rpc',
$use = 'encoded')
{
$this->operation = $operation;
$this->fault = false;
$this->setError('');
$this->request = '';
$this->response = '';
$this->responseData = '';
$this->faultstring = '';
$this->faultcode = '';
$this->opData = array();
$this->debug("call: operation=$operation, namespace=$namespace, soapAction=$soapAction, rpcParams=$rpcParams, style=$style, use=$use, endPointType=$this->endPointType");
$this->appendDebug('params=' . $this->varDump($params));
$this->appendDebug('headers=' . $this->varDump($headers));
if ($headers)
{
$this->requestHeaders = $headers;
}
if ($this->endPointType == 'wsdl' && is_null($this->wsdl))
{
$this->loadWSDL();
if ($this->getError())
{
return false;
}
}
// serialize parameters
if ($this->endPointType == 'wsdl' && $opData = $this->getOperationData($operation))
{
// use WSDL for operation
$this->opData = $opData;
$this->debug("found operation");
$this->appendDebug('opData=' . $this->varDump($opData));
if (isset($opData['soapAction']))
{
$soapAction = $opData['soapAction'];
}
if (! $this->forceEndpoint)
{
$this->endPoint = $opData['endpoint'];
}
else
{
$this->endPoint = $this->forceEndpoint;
}
$namespace = isset($opData['input']['namespace']) ? $opData['input']['namespace'] : $namespace;
$style = $opData['style'];
$use = $opData['input']['use'];
// add ns to ns array
if ($namespace != '' && !isset($this->wsdl->namespaces[$namespace]))
{
$nsPrefix = 'ns' . rand(1000, 9999);
$this->wsdl->namespaces[$nsPrefix] = $namespace;
}
$nsPrefix = $this->wsdl->getPrefixFromNamespace($namespace);
// serialize payload
if (is_string($params))
{
$this->debug("serializing param string for WSDL operation $operation");
$payload = $params;
}
else if (is_array($params))
{
$this->debug("serializing param array for WSDL operation $operation");
$payload = $this->wsdl->serializeRPCParameters($operation,'input',$params,$this->bindingType);
}
else
{
$this->debug('params must be array or string');
$this->setError('params must be array or string');
return false;
}
if (isset($opData['input']['encodingStyle']))
{
$encodingStyle = $opData['input']['encodingStyle'];
}
else
{
$encodingStyle = '';
}
$this->appendDebug($this->wsdl->getDebug());
$this->wsdl->clearDebug();
if ($errstr = $this->wsdl->getError())
{
$this->debug('got wsdl error: '.$errstr);
$this->setError('wsdl error: '.$errstr);
return false;
}
}
else if ($this->endPointType == 'wsdl')
{
// operation not in WSDL
$this->appendDebug($this->wsdl->getDebug());
$this->wsdl->clearDebug();
$this->setError('operation '.$operation.' not present in WSDL.');
$this->debug("operation '$operation' not present in WSDL.");
return false;
}
else
{
// no WSDL
//$this->namespaces['ns1'] = $namespace;
$nsPrefix = 'ns' . rand(1000, 9999);
// serialize
$payload = '';
if (is_string($params))
{
$this->debug("serializing param string for operation $operation");
$payload = $params;
}
else if (is_array($params))
{
$this->debug("serializing param array for operation $operation");
foreach ($params as $k => $v)
{
$payload .= $this->serialize_val($v,$k,false,false,false,false,$use);
}
}
else
{
$this->debug('params must be array or string');
$this->setError('params must be array or string');
return false;
}
static::$usedNamespaces = array();
if ($use == 'encoded')
{
$encodingStyle = 'http://schemas.xmlsoap.org/soap/encoding/';
}
else
{
$encodingStyle = '';
}
}
// wrap RPC calls with method element
if ($style == 'rpc')
{
if ($use == 'literal')
{
$this->debug("wrapping RPC request with literal method element");
if ($namespace)
{
// http://www.ws-i.org/Profiles/BasicProfile-1.1-2004-08-24.html R2735 says rpc/literal accessor elements should not be in a namespace
$payload = "<$nsPrefix:$operation xmlns:$nsPrefix=\"$namespace\">" .
$payload .
"</$nsPrefix:$operation>";
}
else
{
$payload = "<$operation>" . $payload . "</$operation>";
}
}
else
{
$this->debug("wrapping RPC request with encoded method element");
if ($namespace)
{
$payload = "<$nsPrefix:$operation xmlns:$nsPrefix=\"$namespace\">" .
$payload .
"</$nsPrefix:$operation>";
}
else
{
$payload = "<$operation>" .
$payload .
"</$operation>";
}
}
}
// serialize envelope
$soapmsg = $this->serializeEnvelope($payload,$this->requestHeaders,static::$usedNamespaces,$style,$use,$encodingStyle);
$this->debug("endPoint=$this->endPoint, soapAction=$soapAction, namespace=$namespace, style=$style, use=$use, encodingStyle=$encodingStyle");
$this->debug('SOAP message length=' . strlen($soapmsg) . ' contents (max 1000 bytes)=' . substr($soapmsg, 0, 1000));
// send
$return = $this->send($this->getHTTPBody($soapmsg),$soapAction,$this->timeout,$this->responseTimeout);
if ($errstr = $this->getError())
{
$this->debug('Error: '.$errstr);
return false;
}
else
{
$this->return = $return;
$this->debug('sent message successfully and got a(n) '.gettype($return));
$this->appendDebug('return=' . $this->varDump($return));
// fault?
if (is_array($return) && isset($return['faultcode']))
{
$this->debug('got fault');
$this->setError($return['faultcode'].': '.$return['faultstring']);
$this->fault = true;
foreach ($return as $k => $v)
{
$this->$k = $v;
$this->debug("$k = $v<br>");
}
return $return;
}
else if ($style == 'document')
{
// NOTE: if the response is defined to have multiple parts (i.e. unwrapped),
// we are only going to return the first part here...sorry about that
return $return;
}
else
{
// array of return values
if (is_array($return))
{
// multiple 'out' parameters, which we return wrapped up
// in the array
if (sizeof($return) > 1)
{
return $return;
}
// single 'out' parameter (normally the return value)
$return = array_shift($return);
$this->debug('return shifted value: ');
$this->appendDebug($this->varDump($return));
return $return;
// nothing returned (ie, echoVoid)
}
else
{
return "";
}
}
}
}
/**
* check WSDL passed as an instance or pulled from an endPoint
*
* @access protected
*/
protected function checkWSDL()
{
$this->appendDebug($this->wsdl->getDebug());
$this->wsdl->clearDebug();
$this->debug('_checkWSDL');
// catch errors
if ($errstr = $this->wsdl->getError())
{
$this->appendDebug($this->wsdl->getDebug());
$this->wsdl->clearDebug();
$this->debug('got wsdl error: '.$errstr);
$this->setError('wsdl error: '.$errstr);
}
else if ($this->operations = $this->wsdl->getOperations($this->portName, 'soap'))
{
$this->appendDebug($this->wsdl->getDebug());
$this->wsdl->clearDebug();
$this->bindingType = 'soap';
$this->debug('got '.count($this->operations).' operations from wsdl '.$this->wsdlFile.' for binding type '.$this->bindingType);
}
else if ($this->operations = $this->wsdl->getOperations($this->portName, 'soap12'))
{
$this->appendDebug($this->wsdl->getDebug());
$this->wsdl->clearDebug();
$this->bindingType = 'soap12';
$this->debug('got '.count($this->operations).' operations from wsdl '.$this->wsdlFile.' for binding type '.$this->bindingType);
$this->debug('**************** WARNING: SOAP 1.2 BINDING *****************');
}
else
{
$this->appendDebug($this->wsdl->getDebug());
$this->wsdl->clearDebug();
$this->debug('getOperations returned false');
$this->setError('no operations defined in the WSDL document!');
}
}
/**
* instantiate wsdl object and parse wsdl file
*
* @access public
*/
public function loadWSDL()
{
$this->debug('instantiating wsdl class with doc: '.$this->wsdlFile);
$this->wsdl = new WSDL('',$this->proxyHost,$this->proxyPort,$this->proxyUsername,$this->proxyPassword,$this->timeout,$this->responseTimeout,$this->curlOptions,$this->useCurl);
$this->wsdl->setCredentials($this->username, $this->password, $this->authtype, $this->certRequest);
$this->wsdl->fetchWSDL($this->wsdlFile);
$this->checkWSDL();
}
/**
* get available data pertaining to an operation
*
* @param string $operation operation name
* @return array array of data pertaining to the operation
* @access public
*/
public function getOperationData($operation)
{
if ($this->endPointType == 'wsdl' && $this->wsdl === null)
{
$this->loadWSDL();
if ($this->getError())
{
return false;
}
}
if (isset($this->operations[$operation]))
{
return $this->operations[$operation];
}
$this->debug("No data for operation: $operation");
}
/**
* send the SOAP message
*
* Note: if the operation has multiple return values
* the return value of this method will be an array
* of those values.
*
* @param string $msg a SOAPx4 soapmsg object
* @param string $soapaction SOAPAction value
* @param integer $timeout set connection timeout in seconds
* @param integer $responseTimeout set response timeout in seconds
* @return mixed native PHP types.
* @access protected
*/
protected function send($msg, $soapaction = '', $timeout = 0, $responseTimeout = 30)
{
$this->checkCookies();
// detect transport
switch (true)
{
// http(s)
case preg_match('/^http/',$this->endPoint) :
$this->debug('transporting via HTTP');
if ($this->persistentConnection == true && is_object($this->persistentConnection))
{
$http =& $this->persistentConnection;
}
else
{
$http = new TransportHTTP($this->endPoint, $this->curlOptions, $this->useCurl);
if ($this->persistentConnection)
{
$http->usePersistentConnection();
}
}
$http->setContentType($this->getHTTPContentType(), $this->getHTTPContentTypeCharset());
$http->setSOAPAction($soapaction);
if ($this->proxyHost && $this->proxyPort)
{
$http->setProxy($this->proxyHost,$this->proxyPort,$this->proxyUsername,$this->proxyPassword);
}
if ($this->authtype != '')
{
$http->setCredentials($this->username, $this->password, $this->authtype, array(), $this->certRequest);
}
if ($this->httpEncoding != '')
{
$http->setEncoding($this->httpEncoding);
}
$this->debug('sending message, length='.strlen($msg));
if (preg_match('/^http:/',$this->endPoint))
{
$this->responseData = $http->send($msg,$timeout,$responseTimeout,$this->cookies);
}
else if (preg_match('/^https/',$this->endPoint))
{
$this->responseData = $http->send($msg,$timeout,$responseTimeout,$this->cookies);
}
else
{
$this->setError('no http/s in endPoint url');
}
$this->request = $http->outgoingPayload;
$this->response = $http->incomingPayload;
$this->appendDebug($http->getDebug());
$this->updateCookies($http->incomingCookies);
// save transport object if using persistent connections
if ($this->persistentConnection)
{
$http->clearDebug();
if (!is_object($this->persistentConnection))
{
$this->persistentConnection = $http;
}
}
if ($err = $http->getError())
{
$this->setError('HTTP Error: '.$err);
return false;
}
else if ($this->getError())
{
return false;
}
else
{
$this->debug('got response, length='. strlen($this->responseData).' type='.$http->incomingHeaders['content-type']);
return $this->parseResponse($http->incomingHeaders, $this->responseData);
}
break;
default:
$this->setError('no transport found, or selected transport is not yet supported!');
return false;
break;
}
}
/**
* processes SOAP message returned from server
*
* @param array $headers The HTTP headers
* @param string $data unprocessed response data from server
* @return mixed value of the message, decoded into a PHP type
* @access protected
*/
protected function parseResponse($headers, $data)
{
$this->debug('Entering _parseResponse() for data of length ' . strlen($data) . ' headers:');
$this->appendDebug($this->varDump($headers));
if (!isset($headers['content-type']))
{
$this->setError('Response not of type text/xml (no content-type header)');
return false;
}
if (!strstr($headers['content-type'], 'text/xml'))
{
$this->setError('Response not of type text/xml: ' . $headers['content-type']);
return false;
}
if (strpos($headers['content-type'], '='))
{
$enc = str_replace('"', '', substr(strstr($headers["content-type"], '='), 1));
$this->debug('Got response encoding: ' . $enc);
if (preg_match('/^(ISO-8859-1|US-ASCII|UTF-8)$/i',$enc))
{
$this->xml_encoding = strtoupper($enc);
}
else
{
$this->xml_encoding = 'US-ASCII';
}
}
else
{
// should be US-ASCII for HTTP 1.0 or ISO-8859-1 for HTTP 1.1
$this->xml_encoding = 'ISO-8859-1';
}
$this->debug('Use encoding: ' . $this->xml_encoding . ' when creating Parser');
$parser = new Parser($data,$this->xml_encoding,$this->operation,$this->decodeUTF8);
// add parser debug data to our debug
$this->appendDebug($parser->getDebug());
// if parse errors
if ($errstr = $parser->getError())
{
$this->setError( $errstr);
// destroy the parser object
unset($parser);
return false;
}
else
{
// get SOAP headers
$this->responseHeaders = $parser->getHeaders();
// get SOAP headers
$this->responseHeader = $parser->getSoapHeader();
// get decoded message
$return = $parser->getSoapBody();
// add document for doclit support
$this->document = $parser->document;
// destroy the parser object
unset($parser);
// return decode message
return $return;
}
}
/**
* sets user-specified cURL options
*
* @param mixed $option The cURL option (always integer?)
* @param mixed $value The cURL option value
* @access public
*/
public function setCurlOption($option, $value)
{
$this->debug("setCurlOption option=$option, value=");
$this->appendDebug($this->varDump($value));
$this->curlOptions[$option] = $value;
}
/**
* sets the SOAP endPoint, which can override WSDL
*
* @param string $endPoint The endPoint URL to use, or empty string or false to prevent override
* @access public
*/
public function setEndpoint($endPoint)
{
$this->debug("setEndpoint(\"$endPoint\")");
$this->forceEndpoint = $endPoint;
}
/**
* set the SOAP headers
*
* @param mixed $headers String of XML with SOAP header content, or array of soapval objects for SOAP headers
* @access public
*/
public function setHeaders($headers)
{
$this->debug("setHeaders headers=");
$this->appendDebug($this->varDump($headers));
$this->requestHeaders = $headers;
}
/**
* get the SOAP response headers (namespace resolution incomplete)
*
* @return string
* @access public
*/
public function getHeaders()
{
return $this->responseHeaders;
}
/**
* get the SOAP response Header (parsed)
*
* @return mixed
* @access public
*/
public function getHeader()
{
return $this->responseHeader;
}
/**
* set proxy info here
*
* @param string $proxyHost
* @param string $proxyPort
* @param string $proxyUsername
* @param string $proxyPassword
* @access public
*/
public function setHTTPProxy($proxyHost, $proxyPort, $proxyUsername = '', $proxyPassword = '')
{
$this->proxyHost = $proxyHost;
$this->proxyPort = $proxyPort;
$this->proxyUsername = $proxyUsername;
$this->proxyPassword = $proxyPassword;
}
/**
* if authenticating, set user credentials here
*
* @param string $username
* @param string $password
* @param string $authtype (basic|digest|certificate|ntlm)
* @param array $certRequest (keys must be cainfofile (optional), sslcertfile, sslkeyfile, passphrase, verifypeer (optional), verifyhost (optional): see corresponding options in cURL docs)
* @access public
*/
public function setCredentials($username, $password, $authtype = 'basic', $certRequest = array())
{
$this->debug("setCredentials username=$username authtype=$authtype certRequest=");
$this->appendDebug($this->varDump($certRequest));
$this->username = $username;
$this->password = $password;
$this->authtype = $authtype;
$this->certRequest = $certRequest;
}
/**
* use HTTP encoding
*
* @param string $enc HTTP encoding
* @access public
*/
public function setHTTPEncoding($enc='gzip, deflate')
{
$this->debug("setHTTPEncoding(\"$enc\")");
$this->httpEncoding = $enc;
}
/**
* Set whether to try to use cURL connections if possible
*
* @param boolean $use Whether to try to use cURL
* @access public
*/
public function setUseCURL($use)
{
$this->debug("setUseCURL($use)");
$this->useCurl = $use;
}
/**
* use HTTP persistent connections if possible
*