X-Git-Url: http://source.jalview.org/gitweb/?a=blobdiff_plain;f=src%2Fjalview%2Fext%2Fensembl%2FEnsemblRestClient.java;h=f9cfe052a2f7487113cb48fe68a4e5f017ffbc94;hb=a96386b344a49391588762301ad71f1d39c11ca7;hp=e651ddf5c33d13e9aab29939f9f10face99f2bd9;hpb=c64a7d0a951e5ceee8cce4c8b15f86464e287b12;p=jalview.git

diff --git a/src/jalview/ext/ensembl/EnsemblRestClient.java b/src/jalview/ext/ensembl/EnsemblRestClient.java
index e651ddf..f9cfe05 100644
--- a/src/jalview/ext/ensembl/EnsemblRestClient.java
+++ b/src/jalview/ext/ensembl/EnsemblRestClient.java
@@ -155,30 +155,40 @@ abstract class EnsemblRestClient extends EnsemblSequenceFetcher
   protected abstract String getResponseMimeType();
 
   /**
-   * Tries to connect to Ensembl's REST 'ping' endpoint, and returns true if
-   * successful, else false
+   * Checks Ensembl's REST 'ping' endpoint, and returns true if response
+   * indicates available, else false
    * 
+   * @see http://rest.ensembl.org/documentation/info/ping
    * @return
    */
   private boolean checkEnsembl()
   {
+    HttpURLConnection conn = null;
     try
     {
       // note this format works for both ensembl and ensemblgenomes
       // info/ping.json works for ensembl only (March 2016)
       URL ping = new URL(getDomain()
               + "/info/ping?content-type=application/json");
-      HttpURLConnection conn = (HttpURLConnection) ping.openConnection();
-      int rc = conn.getResponseCode();
-      conn.disconnect();
-      if (rc >= 200 && rc < 300)
-      {
-        return true;
-      }
+
+      /*
+       * expect {"ping":1} if ok
+       */
+      BufferedReader br = getHttpResponse(ping, null);
+      JSONParser jp = new JSONParser();
+      JSONObject val = (JSONObject) jp.parse(br);
+      String pingString = val.get("ping").toString();
+      return pingString != null;
     } catch (Throwable t)
     {
       System.err.println("Error connecting to " + PING_URL + ": "
               + t.getMessage());
+    } finally
+    {
+      if (conn != null)
+      {
+        conn.disconnect();
+      }
     }
     return false;
   }