connect (con1, localhost, root,,test,0, mysql-master.sock);
connect (con2, localhost, root,,test,0, mysql-master.sock);

#remember id of con1
connection con1;
drop table if exists connection_kill;
create table connection_kill (kill_id int);
insert into connection_kill values(connection_id());

#kill con1
connection con2;
select ((@id := kill_id) - kill_id) from connection_kill; 
kill @id;

# verify that con1 is really dead
connection con1;
error 2013;
select 1;

#make sure the server is still alive
connection con2;
select 4;
drop table connection_kill;