Mac OSX 为什么那么多的 TCP 链接呢？

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所有结果都在 netstat -an | grep tcp 下所得

一开机没联网之前

tcp6 0 0 *.49152 . LISTEN
tcp4 0 0 *.49152 . LISTEN

联网以后

tcp4 0 0 192.168.0.102.49235 17.125.250.130.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49232 17.248.156.108.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49230 111.206.109.244.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49216 17.250.120.17.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49215 17.248.152.145.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49212 17.248.152.145.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49211 17.248.152.145.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49210 17.248.152.145.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49209 17.248.152.145.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49199 111.206.109.244.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49198 111.206.109.244.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49197 17.250.120.145.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49196 17.250.120.145.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49195 17.250.120.145.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49184 40.100.54.18.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49183 17.250.120.241.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49182 17.250.120.241.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49181 17.250.120.241.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49173 17.248.156.104.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49172 17.248.156.104.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49163 111.206.109.248.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49161 111.206.109.248.443 ESTABLISHED
tcp4 0 0 192.168.0.102.49160 17.252.204.85.5223 ESTABLISHED
tcp6 0 0 *.49152 . LISTEN
tcp4 0 0 *.49152 . LISTEN
tcp4 0 0 192.168.0.102.49164 111.206.109.120.443 TIME_WAIT
tcp4 0 0 192.168.0.102.49200 121.18.169.14.443 TIME_WAIT
tcp4 0 0 192.168.0.102.49226 17.248.135.233.443 TIME_WAIT
tcp4 0 0 192.168.0.102.49231 111.206.109.244.443 TIME_WAIT