added exception handling for failed discovery request
added exception handling for failed discovery request

deepnarsay/JGroups,ibrahimshbat/JGroups,dimbleby/JGroups,deepnarsay/JGroups,TarantulaTechnology/JGroups,deepnarsay/JGroups,Sanne/JGroups,belaban/JGroups,slaskawi/JGroups,Sanne/JGroups,ligzy/JGroups,slaskawi/JGroups,ibrahimshbat/JGroups,tristantarrant/JGroups,ibrahimshbat/JGroups,rhusar/JGroups,slaskawi/JGroups,danberindei/JGroups,rpelisse/JGroups,kedzie/JGroups,rhusar/JGroups,pferraro/JGroups,TarantulaTechnology/JGroups,rhusar/JGroups,rvansa/JGroups,vjuranek/JGroups,ligzy/JGroups,kedzie/JGroups,ibrahimshbat/JGroups,pruivo/JGroups,pferraro/JGroups,rvansa/JGroups,TarantulaTechnology/JGroups,belaban/JGroups,ligzy/JGroups,tristantarrant/JGroups,vjuranek/JGroups,pruivo/JGroups,pferraro/JGroups,vjuranek/JGroups,Sanne/JGroups,danberindei/JGroups,belaban/JGroups,dimbleby/JGroups,rpelisse/JGroups,danberindei/JGroups,kedzie/JGroups,pruivo/JGroups,dimbleby/JGroups,rpelisse/JGroups