不要用netcat...用telnet就行了。

$ nc localhost 21201       #用nc在set的时候不会结束
set hello 0 0 5   
xxxxx
asdjasd
CLIENT_ERROR bad data chunk
^C
$ telnet localhost 21201  #用telnet就没问题
Trying 127.0.0.1...
Connected to localhost.
Escape character is '^]'.
set hello 0 0 5
world
STORED
get hello
VALUE hello 0 5
world
END