Why does Android SDK manager fail to download the SDK?

Today, I just got the latest version of Android SDK manager R17. the following error is always reported... It is estimated that the dl-ssl.google.com is blocked again.

Fetching

Http://dl-ssl.google.com/android/repository/addons_list-1.xml

Failed to fetch URL
Http://dl-ssl.google.com/android/repository/addons_list-1.xml, reason: connection
Http://dl-ssl.google.com (refused)
Fetched add-ons list successfully
Fetching URL:

Http://dl-ssl.google.com/android/repository/repository-6.xml

Failed to fetch URL
Http://dl-ssl.google.com/android/repository/repository-6.xml, reason: connection
Http://dl-ssl.google.com (refused)
Done loading packages.

 

Still an old solution: (write it down to avoid forgetting ~ Haha)

In SDK manager tools-> options, open the settings of SDK manager and select "Force https ://... Sources to be fetched using http ://...", Use http.
In Windows, open the/etc/hosts file in c: \ windows \ system32 \ drivers \ etc, and add
# Google_android update
203.208.46.146 dl.google.com
203.208.46.146 dl-ssl.google.com