different between pool_size in connect and set_keepalive

[sanwv]

in connect method can set pool,pool_size and backlog, why set_keepalive method also need set pool_size?

[gowxw]

if pool_size was not set when connect was called, the pool_size can be set and take effect when set_keepalive was called;
if pool_size was set when connect was called, the pool_size set in set_keepalive take no effect at all