I‘m use offchain lead to stop server.
My Setp
server1:
create stream s1 true
createbinarycache
appendbinarycache A1... 012345....
publish s1 key6 '{"cache":"A1..."}' offchain
stop
then i delete ~/.multichain/mc/chunks/data/source
and start (./multichaind mc -daemmon)
now server2 subscribe s1 the server1 will stop 【Segmentation fault (core dumped)】