8877为haproxy对外的端口，8443是多个SS服务器的端口，weight是权重，值越大分配的负载越多，backup是标志后备的服务器。手机上影梭使用haproxy所在的IP和端口8877访问，加密方式和密码使用SS服务器的设置。

haproxy.cfg

global
ulimit-n 51200
defaults
log global
mode tcp
option dontlognull
balance roundrobin
option persist
timeout connect 10000
timeout client 150000
timeout server 150000
retries 1
option redispatch
frontend ss-in
bind *:8877
default_backend ss-out
backend ss-out
server server1 jp0.example.com:8443 maxconn 20480 weight 30
server server2 jp1.example.com:8443 maxconn 20480 weight 30
server server3 jp2.example.com:8443 maxconn 20480 weight 30
server server4 jp3.example.com:8443 maxconn 20480 weight 30
server server5 jp4.example.com:8443 maxconn 20480 weight 30
server server6 jp5.example.com:8443 maxconn 20480 weight 30
server server7 uk.example.com:8443 maxconn 20480  weight 5
server server8 sg.example.com:8443 maxconn 20480  weight 10
server server9 us0.example.com:8443 maxconn 20480 weight 20
server server10 us1.example.com:8443 maxconn 20480 weight 20
server server11 us2.example.com:8443 maxconn 20480 weight 20
server server12 us3.example.com:8443 maxconn 20480 weight 20 backup
server server13 us4.example.com:8443 maxconn 20480 weight 20
server server14 us5.example.com:8443 maxconn 20480 weight 20
server server15 us6.example.com:8443 maxconn 20480 weight 20
server server16 us7.example.com:8443 maxconn 20480 weight 20
server server17 us8.example.com:8443 maxconn 20480 weight 20
server server18 hk.example.com:8443 maxconn 20480  weight 100

修改了配置，增加了查看stats。因为本haproxy目的不是负载平衡，而是保障SS既快速又稳定，所以将hk的服务器权重标志为250，第二是us2，其他做稳定性后备。这样的另一个考虑是连接99%从hk走，twitter账号不会因为频繁更换IP而被锁。