Random Bingads WSDL errors: Parsing WSDL: Couldn't load from...failed to load external entity, Could not connect to host, Parsing Schema: can't import schema from

Question

Hi,
I am developing a web tool that accesses client's Bingads accounts via OAUTH2 granting. I am downloading data from clients daily.
Generally it worked, but for 2 days I am experiencing a weird issue, that in random times (but more and more often though) I receive random error messages from Bing server. I am pasting below a few example from my logs (with timestamp and request/response).
Must note that I launch these requests from the server where we have the webapp but also I launch it locally. The same is the result.
The timestamp is in France time (GMT+1).
Thanks ahead!
Best regards,
Steve
2015-01-14 15:08:05: Service\BingAds::initService => SOAP-ERROR: Parsing Schema: can't import schema from 'https://reporting.api.bingads.microsoft.com/Api/Advertiser/Reporting/V9/ReportingService.svc?xsd=xsd0'
---------Soap Request:--------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="https://bingads.microsoft.com/CampaignManagement/v9"><SOAP-ENV:Header><ns1:CustomerAccountId>XXX</ns1:CustomerAccountId><ns1:CustomerId/><ns1:DeveloperToken>XXX</ns1:DeveloperToken><ns1:UserName/><ns1:Password/><ns1:AuthenticationToken>XXX</ns1:AuthenticationToken></SOAP-ENV:Header><SOAP-ENV:Body><ns1:GetDetailedBulkDownloadStatusRequest><ns1:RequestId>108277125</ns1:RequestId></ns1:GetDetailedBulkDownloadStatusRequest></SOAP-ENV:Body></SOAP-ENV:Envelope>
---------Response:------------------------------------------------
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"><s:Header><h:TrackingId xmlns:h="https://bingads.microsoft.com/CampaignManagement/v9">XXXXX</h:TrackingId></s:Header><s:Body><GetDetailedBulkDownloadStatusResponse
xmlns="https://bingads.microsoft.com/CampaignManagement/v9"><Errors i:nil="true" xmlns:i="http://www.w3.org/2001/XMLSchema-instance"/><ForwardCompatibilityMap xmlns:a="http://schemas.datacontract.org/2004/07/System.Collections.Generic"
xmlns:i="http://www.w3.org/2001/XMLSchema-instance"/><PercentComplete>100</PercentComplete><RequestStatus>Completed</RequestStatus><ResultFileUrl>https://download.api.bingads.microsoft.com/ReportDownload/Download.aspx?q=XXX</ResultFileUrl></GetDetailedBulkDownloadStatusResponse></s:Body></s:Envelope>
2015-01-15 05:41:39: Service\BingAds::getCampaigns => SoapFault: Could not connect to host
---------Soap Request:--------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="https://bingads.microsoft.com/CampaignManagement/v9"><SOAP-ENV:Header><ns1:CustomerAccountId>XXX</ns1:CustomerAccountId><ns1:CustomerId/><ns1:DeveloperToken>XXX</ns1:DeveloperToken><ns1:UserName/><ns1:Password/><ns1:AuthenticationToken>XXX</ns1:AuthenticationToken></SOAP-ENV:Header><SOAP-ENV:Body><ns1:GetCampaignsByAccountIdRequest><ns1:AccountId>XXX</ns1:AccountId></ns1:GetCampaignsByAccountIdRequest></SOAP-ENV:Body></SOAP-ENV:Envelope>
---------Response:------------------------------------------------
(empty response logged)
2015-01-15 05:45:00: Service\BingAds::initService => SOAP-ERROR: Parsing WSDL: Couldn't load from 'https://api.bingads.microsoft.com/Api/Advertiser/CampaignManagement/v9/CampaignManagementService.svc?singleWsdl' : failed to load external entity "https://api.bingads.microsoft.com/Api/Advertiser/CampaignManagement/v9/CampaignManagementService.svc?singleWsdl"
2015-01-15 11:58:46: Service\BingAds::getCampaigns =>
---------Soap Fault:--------------------------------------------
SoapFault catched:
Could not connect to host
---------Soap Request:--------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="https://bingads.microsoft.com/CampaignManagement/v9"><SOAP-ENV:Header><ns1:CustomerAccountId>XXXX</ns1:CustomerAccountId><ns1:CustomerId/><ns1:DeveloperToken>XXXX</ns1:DeveloperToken><ns1:UserName/><ns1:Password/><ns1:AuthenticationToken>XXX</ns1:AuthenticationToken></SOAP-ENV:Header><SOAP-ENV:Body><ns1:GetCampaignsByAccountIdRequest><ns1:AccountId>XXXX</ns1:AccountId></ns1:GetCampaignsByAccountIdRequest></SOAP-ENV:Body></SOAP-ENV:Envelope>
---------Response:------------------------------------------------
(empty response logged)
2015-01-15 11:59:50: Service\BingAds::initService =>
---------Soap Fault:--------------------------------------------
SoapFault catched:
SOAP-ERROR: Parsing WSDL: Couldn't load from 'https://api.bingads.microsoft.com/Api/Advertiser/CampaignManagement/v9/CampaignManagementService.svc?singleWsdl' : failed to load external entity "https://api.bingads.microsoft.com/Api/Advertiser/CampaignManagement/v9/CampaignManagementService.svc?singleWsdl"
---------Soap Request:--------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="https://bingads.microsoft.com/CampaignManagement/v9"><SOAP-ENV:Header><ns1:CustomerAccountId>XXX</ns1:CustomerAccountId><ns1:CustomerId/><ns1:DeveloperToken>XXXXX</ns1:DeveloperToken><ns1:UserName/><ns1:Password/><ns1:AuthenticationToken>XXXX</ns1:AuthenticationToken></SOAP-ENV:Header><SOAP-ENV:Body><ns1:GetCampaignsByAccountIdRequest><ns1:AccountId>XXX</ns1:AccountId></ns1:GetCampaignsByAccountIdRequest></SOAP-ENV:Body></SOAP-ENV:Envelope>
---------Response:------------------------------------------------
<s:Envelope xmlns:s="http://schemas.xmlsoap.org/soap/envelope/"><s:Header><h:TrackingId xmlns:h="https://bingads.microsoft.com/CampaignManagement/v9">XXXXX</h:TrackingId></s:Header><s:Body><GetCampaignsByAccountIdResponse
xmlns="https://bingads.microsoft.com/CampaignManagement/v9"><Campaigns xmlns:i="http://www.w3.org/2001/XMLSchema-instance"></Campaign>........</Campaigns></GetCampaignsByAccountIdResponse></s:Body></s:Envelope>
2015-01-15 12:05:55: Service\BingAds::getCampaigns =>
---------Soap Fault:--------------------------------------------
SoapFault catched:
Could not connect to host
---------Soap Request:--------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns1="https://bingads.microsoft.com/CampaignManagement/v9"><SOAP-ENV:Header><ns1:CustomerAccountId>XXXXX</ns1:CustomerAccountId><ns1:CustomerId/><ns1:DeveloperToken>XXXXX</ns1:DeveloperToken><ns1:UserName/><ns1:Password/><ns1:AuthenticationToken>XXXXXX</ns1:AuthenticationToken></SOAP-ENV:Header><SOAP-ENV:Body><ns1:GetCampaignsByAccountIdRequest><ns1:AccountId>XXXXX</ns1:AccountId></ns1:GetCampaignsByAccountIdRequest></SOAP-ENV:Body></SOAP-ENV:Envelope>
---------Response:------------------------------------------------
(empty response logged)

Answer 1

Hi,
1. I am using the older version of the PHP library provided by Bing (updated on 1/20/2014), so that is doing the WSDL loadings. I initialize the proxy calling OpticoBingAdsClientProxy providing what it needs, and then do the requests.
2. I have a cron that reads data from client's accounts. I make several calls, like get search query report, get keyword performance report, get keyword bulk data. As the script progressed the first 2 worked and the third gave error. Or in other cases the
first request failed. The calls have quite some time in between them since I process data (sometimes even 160 seconds)
3. I did not change the code ion terms of requests, since as I said I use the PHP library (same credentials, ...).
As of today (2015-01-16 10:30 GMT + 2) running my script, still have the same issues.
Thank you!
Steve