Better handling of protocol commands

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/net/trunk@1648249 13f79535-47bb-0310-9956-ffa450edef68
Javadoc

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/net/trunk@1648250 13f79535-47bb-0310-9956-ffa450edef68
Better handling of multiple item names

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/net/trunk@1648251 13f79535-47bb-0310-9956-ffa450edef68
Check sequence of responses to detect missed messages

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/net/trunk@1648257 13f79535-47bb-0310-9956-ffa450edef68
Print the missing ids at the end

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/net/trunk@1648271 13f79535-47bb-0310-9956-ffa450edef68