1. 打開https://www.ipaddress.com/
查詢 github.global.ssl.fastly.net 和 github.com 兩個地址
多查幾次，選擇一個穩定，延遲較低的 ip 按如下方式添加到host文件的最后面
2. host文件
-
windows系統的hosts文件的位置如下：
C:\Windows\System32\drivers\etc\hosts
-
mac/linux系統的hosts文件的位置如下：
/etc/hosts
3. 重啟瀏覽器，或刷新DNS緩存，告訴電腦hosts文件已經修改，
linux/mac執行sudo /etc/init.d/networking restart命令；
windows在cmd中輸入ipconfig /flushdns命令即可。
4. github-production-release-asset-2e65be.s3.amazonaws.com 服務器的連接
在首次運行 react naticve 項目時， 遇到了如下的問題：
Failed to connect to github-production-release-asset-2e65be.s3.amazonaws.com port 443: Operation time out Command /bin/sh failed with exit code 7。
具體原因不詳，但是把info.plist的文件中http改成https的請求就可以了。
辦法一：pcloud網盤
將下載鏈接復制下來，然后轉存到pcloud上，速度很快。
辦法二：hosts文件
在hosts文件里添加該行，親測有效。
54.231.98.184 github-com.s3.amazonaws.com
5. 如何修改host文件登陸google
# Amazon AWS Start
54.239.31.69 aws.amazon.com
54.239.30.25 console.aws.amazon.com
54.239.96.90 ap-northeast-1.console.aws.amazon.com
54.240.226.81 ap-southeast-1.console.aws.amazon.com
54.240.193.125 ap-southeast-2.console.aws.amazon.com
54.239.54.102 eu-central-1.console.aws.amazon.com
177.72.244.194 sa-east-1.console.aws.amazon.com
176.32.114.59 eu-west-1.console.aws.amazon.com
54.239.31.128 us-west-1.console.aws.amazon.com
54.240.254.230 us-west-2.console.aws.amazon.com
54.239.38.102 s3-console-us-standard.console.aws.amazon.com
54.231.49.3 s3.amazonaws.com
52.219.0.4 s3-ap-northeast-1.amazonaws.com
54.231.242.170 s3-ap-southeast-1.amazonaws.com
54.231.251.21 s3-ap-southeast-2.amazonaws.com
54.231.193.37 s3-eu-central-1.amazonaws.com
52.218.16.140 s3-eu-west-1.amazonaws.com
52.92.72.2 s3-sa-east-1.amazonaws.com
54.231.236.6 s3-us-west-1.amazonaws.com
54.231.168.160 s3-us-west-2.amazonaws.com
52.216.80.48 github-cloud.s3.amazonaws.com
54.231.40.3 github-com.s3.amazonaws.com
52.216.20.171 github-production-release-asset-2e65be.s3.amazonaws.com
52.216.228.168 github-production-user-asset-6210df.s3.amazonaws.com