Problem consuming RESTful WCF web service with php curl

Question

I am having problems consuming a WCF web service (PaySimple's v3.00 API) using php curl. I am trying to post an xml payload to the service and I keep getting a 400 - Bad Request error. When I using Firefox's Poster add-on, I can post the very same payload and I get the expected response - 200 OK with an XML response containing the required response. Here's a snippet of my code:

        $ch = curl_init();
        $payload = $createPayload();
        $length = strlen($payload);
        $headers = array("Expect:");
        if($isPost)
        {
            curl_setopt($ch, CURLOPT_POST, TRUE);
            curl_setopt($ch, CURLOPT_POSTFIELDS, $payload);
            $headers[] = "Content-length: $length";
        }
        else {
            curl_setopt($ch, CURLOPT_HTTPGET, TRUE);
        }
        if($requestType == 'xml')
        {
            $headers[] = 'Content-Type: text/xml; charset: utf-8';
            $headers[] = 'Accept: application/xml';
        }
        else {
            $headers[] = 'Content-Type: application/json; charset: utf-8';
            $headers[] = 'Accept: application/json';
        }            
        $headers[] = "Connection: close";
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt ($ch, CURLOPT_SSL_VERIFYHOST, 0);
        curl_setopt ($ch, CURLOPT_SSL_VERIFYPEER, 0);
        //debugging
        curl_setopt($ch, CURLOPT_VERBOSE, TRUE);
        $fh = fopen('curl_debug.txt', 'w');
        curl_setopt($ch, CURLOPT_STDERR, $fh);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, TRUE);            
        $response = curl_exec($ch);
        curl_close($ch);

$payload contains the following value:

<AddCustomer xmlns="http://api.paysimple.com"&gt;&lt;userkey&gt;APIUser1989&lt;/userkey&gt;&lt;apikey&gt;pxTbp4F6y7JuaMu36qazEw51JiqUA7lGme0j62r3UeQyNojvEfpNo7tn4pLq0yEULHz5KykHWV6AjNQJEyskCw0tXSKZ0vcP5mCynh1IgfQEH4NdXRkXeMNAGEdx6Ee0&lt;/apikey&gt;&lt;customer xmlns="http://api.paysimple.com" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"&gt;&lt;ApiConsumerData/&gt;&lt;PsReferenceId&gt;0&lt;/PsReferenceId&gt;&lt;AltEmail&gt;[email protected]&lt;/AltEmail&gt;&lt;AltPhone/&gt;&lt;BillingAddress1&gt;TestBillingAddress1&lt;/BillingAddress1&gt;&lt;BillingAddress2/&gt;&lt;BillingCity&gt;TestBillingCity&lt;/BillingCity&gt;&lt;BillingCountryCode/&gt;&lt;BillingPostalCode&gt;80202&lt;/BillingPostalCode&gt;&lt;BillingState&gt;6&lt;/BillingState&gt;&lt;CompanyName&gt;TestCompany&lt;/CompanyName&gt;&lt;CreatedOn&gt;0001-01-01T00:00:00&lt;/CreatedOn&gt;&lt;Email&gt;[email protected]&lt;/Email&gt;&lt;Fax/&gt;&lt;FirstName&gt;TestFirstName&lt;/FirstName&gt;&lt;LastModified&gt;0001-01-01T00:00:00&lt;/LastModified&gt;&lt;LastName&gt;TestLastName&lt;/LastName&gt;&lt;MiddleName/&gt;&lt;Notes/&gt;&lt;Phone&gt;5551234567&lt;/Phone&gt;&lt;ShippingAddress1/&gt;&lt;ShippingAddress2/&gt;&lt;ShippingCity/&gt;&lt;ShippingCountryCode/&gt;&lt;ShippingPostalCode/&gt;&lt;ShippingSameAsBilling&gt;true&lt;/ShippingSameAsBilling&gt;&lt;ShippingState&gt;0&lt;/ShippingState&gt;&lt;WebSite/&gt;&lt;/customer&gt;&lt;/AddCustomer&gt;

Here's what shows up in curl_debug.txt:

• About to connect() to sandbox-api.paysimple.com port 443 (#0)
• Trying 165.193.50.51... * connected
• Connected to sandbox-api.paysimple.com (165.193.50.51) port 443 (#0)
• successfully set certificate verify locations:
• CAfile: none CApath: /etc/ssl/certs
• SSL connection using RC4-MD5
• Server certificate:
• subject: C=US; ST=Colorado; L=Denver; O=PaySimple, Inc.; OU=PaySimple; CN=*.paysimple.com
• start date: 2010-05-04 00:00:00 GMT
• expire date: 2011-06-29 23:59:59 GMT
• issuer: C=US; O=DigiCert Inc; OU=www.digicert.com; CN=DigiCert High Assurance CA-3
• SSL certificate verify ok.

POST /3.00/paysimpleapi.svc/xml/listcustomers HTTP/1.1
Host: sandbox-api.paysimple.com
Content-length: 1153
Content-Type: text/xml; charset: utf-8
Accept: application/xml
Connection: close

HTTP/1.1 400 Bad Request
Connection: close
Date: Fri, 27 Aug 2010 11:07:21 GMT
Server: Microsoft-IIS/6.0
X-Powered-By: ASP.NET
X-AspNet-Version: 2.0.50727
Set-Cookie: ASP.NET_SessionId=oxpese454u4rr3552evybjue; path=/; HttpOnly
Cache-Control: private
Content-Length: 0

Closing connection #0

F1! F1!

Answer 1

Your POST's Content-Type should probably be application/x-www-form-urlencoded or multipart/form-data, and not application/xml

Answer 2

The problem is probably in one of these:

Content-Type: text/xml; charset: utf-8
Accept: application/xml

Try text/xml or application/xml for both, try uppercase UTF-8. Try to send the same headers as Firefox.

Answer 3

Tash You are posting to POST /3.00/paysimpleapi.svc/xml/listcustomers HTTP/1.1

but yet you are adding customer (i.e use POST /3.00/paysimpleapi.svc/xml/listcustomers HTTP/1.1)

I am going to email you a screen shot of a call made via Fiddler.

Answer 4

sorry tash thought I had touched up the url

but yet you are adding customer (i.e use POST /3.00/paysimpleapi.svc/xml/addcustomer HTTP/1.1)

Answer 5

Tash

Post to https://sandbox-api.paysimple.com/3.00/PaysimpleApi.svc/xml/addcustomer http/1.1

use header: Content-length: 1262 Content-type: application/xml; charset=utf-8 Accept: application/xml Method: invokeMethod UserAgent: PaySimple Host: sandbox-api.paysimple.com

Try request SandboxMelody qUWzSPxkcxDR6RJiR2ypzbznV4m6jva5N8kaosnNqQJYqNTGcVouWhKbN5NPGiZxJdmx2QnapYNcwq1bjtfmGwLhBcdMT6x3z7IdPVYA3H7HDBUqwW6eJDyaf8dhKqr0 0 1122 Boogie Woogie Avenue#6City 801116CompanyName99999 0001-01-01T00:00:[email protected]:00:00 LastNameThis is a new customer...from Fiddler3035551212 1122 Boogie Woogie Avenue#5City 80111true6

USE ADDCUSTOMER in both post url and request body