另外一个帖子里回复了。

zyl@zyl-Aspire-4741:~/bitshares-core/build/programs/cli_wallet$  ./cli_wallet -w witness_wallet.json -s ws://127.0.0.1:8090 -H 127.0.0.1:8091
Logging RPC to file: logs/rpc/rpc.log
wdata.ws_server: ws://127.0.0.1:8090
0 exception: unspecified
Underlying Transport Error
    {"message":"Underlying Transport Error"}
    asio  websocket.cpp:449 operator()
    {"uri":"ws://127.0.0.1:8090"}
    th_a  websocket.cpp:678 connect