added timeout for remote searches of 10 seconds

source/net/yacy/cora/federate/solr/instance/RemoteInstance.java

@@ -53,6 +53,8 @@ import org.apache.http.impl.client.BasicCredentialsProvider;
 import org.apache.http.impl.client.DefaultHttpClient;
 import org.apache.http.impl.client.DefaultHttpRequestRetryHandler;
 import org.apache.http.impl.conn.PoolingClientConnectionManager;
+import org.apache.http.params.HttpConnectionParams;
+import org.apache.http.params.HttpParams;
 import org.apache.http.protocol.HttpContext;
 import org.apache.solr.client.solrj.SolrServer;
 import org.apache.solr.client.solrj.impl.HttpSolrServer;
@@ -145,6 +147,9 @@ public class RemoteInstance implements SolrInstance {
                     return context;
                 }
             };
+            HttpParams params = this.client.getParams();
+            HttpConnectionParams.setConnectionTimeout(params, 10000);
+            HttpConnectionParams.setSoTimeout(params, 10000);
             this.client.addRequestInterceptor(new HttpRequestInterceptor() {
                 @Override
                 public void process(final HttpRequest request, final HttpContext context) throws IOException {