fix dumb-client and memory errors

Signed-off-by: Mattias Andrée <maandree@operamail.com>
m doc

Signed-off-by: Mattias Andrée <maandree@operamail.com>
Do not echo back messages to the sender

Signed-off-by: Mattias Andrée <maandree@operamail.com>
m + fix message sending

Signed-off-by: Mattias Andrée <maandree@operamail.com>
m

Signed-off-by: Mattias Andrée <maandree@operamail.com>