title: EWS Java 1.2 - Unable to connect to company Exchange Server
body: <p>I'm currently trying to connect to our company's Exchange server using the EWS Java API.
  Unfortunately when try to execute anything (either autodiscover or some other action after using <code>setUrl</code> manually) I receive the following error:</p>
  
  <pre><code>Apr 17, 2013 7:57:10 AM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
  INFO: I/O exception (java.net.ConnectException) caught when processing request: Connection refused: connect
  Apr 17, 2013 7:57:10 AM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
  INFO: Retrying request
  Apr 17, 2013 7:57:11 AM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
  INFO: I/O exception (java.net.ConnectException) caught when processing request: Connection refused: connect
  Apr 17, 2013 7:57:11 AM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
  INFO: Retrying request
  Apr 17, 2013 7:57:12 AM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
  INFO: I/O exception (java.net.ConnectException) caught when processing request: Connection refused: connect
  Apr 17, 2013 7:57:12 AM org.apache.commons.httpclient.HttpMethodDirector executeWithRetry
  INFO: Retrying request
  Exception in thread "main" microsoft.exchange.webservices.data.ServiceRequestException: The request failed. Connection refused: connect
      at microsoft.exchange.webservices.data.ServiceRequestBase.getEwsHttpWebResponse(Unknown Source)
      at microsoft.exchange.webservices.data.ServiceRequestBase.validateAndEmitRequest(Unknown Source)
      at microsoft.exchange.webservices.data.SimpleServiceRequestBase.internalExecute(Unknown Source)
      at microsoft.exchange.webservices.data.MultiResponseServiceRequest.execute(Unknown Source)
      at microsoft.exchange.webservices.data.ExchangeService.bindToFolder(Unknown Source)
      at microsoft.exchange.webservices.data.ExchangeService.bindToFolder(Unknown Source)
      at microsoft.exchange.webservices.data.CalendarFolder.bind(Unknown Source)
      at microsoft.exchange.webservices.data.CalendarFolder.bind(Unknown Source)
      at er.dream.tgif.outlook.OutlookTest.findAppointments(OutlookTest.java:59)
      at er.dream.tgif.outlook.OutlookTest.main(OutlookTest.java:45)
  Caused by: java.net.ConnectException: Connection refused: connect
      at java.net.DualStackPlainSocketImpl.waitForConnect(Native Method)
      at java.net.DualStackPlainSocketImpl.socketConnect(DualStackPlainSocketImpl.java:75)
      at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
      at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
      at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
      at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:157)
      at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
      at java.net.Socket.connect(Socket.java:579)
      at sun.security.ssl.SSLSocketImpl.connect(SSLSocketImpl.java:618)
      at microsoft.exchange.webservices.data.EwsSSLProtocolSocketFactory.createSocket(Unknown Source)
      at org.apache.commons.httpclient.HttpConnection.open(HttpConnection.java:707)
      at org.apache.commons.httpclient.MultiThreadedHttpConnectionManager$HttpConnectionAdapter.open(MultiThreadedHttpConnectionManager.java:1361)
      at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:387)
      at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171)
      at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397)
      at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323)
      at microsoft.exchange.webservices.data.HttpClientWebRequest.executeRequest(Unknown Source)
      ... 10 more
  </code></pre>
  
  <p>I tried logging in using my credentials to the exchange servers web interface and this is working fine. Assuming it might be related to SSL issues, I also tried implementing a dummy TrustManager and setting it as default for <code>HttpsUrlConnections</code>.</p>
  
  <p>Unfortunately this didn't help and the error still persists.</p>
  
  <p>One notable fact: In my Outlook I can see that the Exchange server is configured to use a proxy server and a specific SSL URL to connect to it. (Proxy authentication is set to NTLM)
  I'm not quite sure how to reflect this in my coding.</p>
  
  <p>Might this be causing the exception or am I looking at a different issue here?</p>