why cosbench hang up 30 seconds when obj-service has network error

[weingithub]

we use vip to provide HA, but in out test, when do network error in node1，the vip change to node2 aftter 4 seconds, but capture package in cosbench client, there is 30 second with no packet.

can anyone tell me why is 30 seconds and how to short it？
look the time between 17:50:59 and 17:51:29.

thanks!
@mcspring @Niklas974

[kisscelia]

maybe the default timeout is 30s

    // --------------------------------------------------------------------------
    // CONNECTION
    // --------------------------------------------------------------------------
    String CONN_TIMEOUT_KEY = "timeout";
    int CONN_TIMEOUT_DEFAULT = 30000;

http's ConnectionTimeout and SocketTimeout are related to this parameter(timeout).