Response object for Drupal HTTP Request

Question

We are using the drupal_http_request function to send some data to salesforce. We've been told that one of the fields is being cut off and that they are receiving incomplete data. When I examine the response object (via a debugger), I'm seeing all the data that was sent out. Am I correct in my assumption that none of the data is being truncated on the Drupal side of things?

  //I see all the data here that was sent out.
  list($response, $result->data) = preg_split("/\r\n\r\n|\n\n|\r\r/", $response, 2);
  $response = preg_split("/\r\n|\n|\r/", $response);

We are using the Rules HTTP Client. The request object data is being set in a rule:

orgid=00ZZ00000zzzzz
retURL=http://example.com
recordType=012U00000001eYn
Sender_IP__c=[entityform:field_salesforce_context]
email=[entityform:field-email]
name=[entityform:field-contact-form-first-name] [entityform:field-contact-form-last-name]
description=[entityform:field_please_provide_as_much_det]
00NU000000zzzzzz=[entityform:field_category]
external=1

The actual code that calles drupal_http_request is this:

 $data = str_replace("\r\n", '&', $data);
 $data = explode('&', $data);
 foreach ($data as &$item) {
    list($name, $value) = explode('=', $item, 2);
    $value = urlencode($value);
    $item = "{$name}={$value}";
 }
 $options['data'] = implode('&', $data);

 // Max redirects.
 $options['max_redirects'] = empty($max_redirects) ? 3 : $max_redirects;

 // Timeout.
 $options['timeout'] = empty($timeout) ? 30 : $timeout;

 // HERE
 $response = drupal_http_request($url, $options);
 if (isset($response->error)) {
    return;
 }
 else {
    return array('http_response' => $response->data);
 }

When I set a breakpoint here and step through the code all the data is present. The response object looks good:

data: " http://example.com"> if (this.SfdcApp && this.SfdcApp.projectOneNavigator) { SfdcApp.projectOneNavigator.handleRedirect('someURL'); } else if (window.location.replace){ window.location.replace('someURL');} else {;window.location.href ='someURL';} � �"

code: 200

protocol: "HTTP/1.1"

status: "OK"

request:

"POST /servlet/servlet.WebToCase?encoding=UTF-8 HTTP/1.0 Content-Type: application/x-www-form-urlencoded User-Agent: Drupal (+http://drupal.org/) Host: gsa-peo.my.salesforce.com Content-Length: 1536 orgid=00ZZ00000zzzzz&retURL=http%3A%2F%example.com&recordType=012U00000001eYn&Sender_IP__c=127.0.0.1&email=bsmith%40example.com&name=Bob+Smith&description=Sed+ligula+ipsum%2C+scelerisque+vel+fermentum+id%2C+aliquam+ac+risus.+Ut+sed+euismod+lectus%2C+non+congue+massa.+Nam+est+nisi%3B+laoreet+in+vulputate+eget%2C+porta+nec+eros%21+Nulla+non+aliquam+leo%2C+et+ornare+ligula.+Morbi+egestas+augue+a+purus+suscipit+placerat.+Proin+cursus+iaculis+risus%2C+id+ultricies+nullam.&Sed ligula ipsum, scelerisque vel fermentum id, aliquam ac risus. Ut sed euismod lectus, non congue massa. Nam est nisi; laoreet in vulputate eget, porta nec eros! Nulla non aliquam leo, et ornare ligula. Morbi egestas augue a purus suscipit placerat. Proin cursus iaculis risus, id ultricies nullam.=&=&Sed ligula ipsum, scelerisque vel fermentum id, aliquam ac risus. Ut sed euismod lectus, non congue massa. Nam est nisi; laoreet in vulputate eget, porta nec eros! Nulla non aliquam leo, et ornare ligula. Morbi egestas augue a purus suscipit placerat. Proin cursus iaculis risus, id ultricies nullam.=&=&Sed ligula ipsum, scelerisque vel fermentum id, aliquam ac risus. Ut sed euismod lectus, non congue massa. Nam est nisi; laoreet in vulputate eget, porta nec eros! Nulla non aliquam leo, et ornare ligula. Morbi egestas augue a purus suscipit placerat. Proin cursus iaculis risus, id ultricies nullam.&00NU0000004z903=General+information&external=1"

url: "slaesforce URL"