What's the difference between vhost and vport?

[yjyj <yangjing001001@xxxxxxxxx>]

Hi,

I know that 'vhost' and 'vport'  used in the reverse proxy mode.
Whtat's the difference between them?

And what about 'accel' ? It is said that 'vhost' and 'vport' implies
'accel' in the default squid.conf. Is it necessary in the reverse
proxy mode ?


yjyj