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  • wget一个网站很慢的原因

    今天wget一个网站时,发现很慢:

     1 # wget www.baidu.com
     2 --2017-05-29 12:29:49--  http://www.baidu.com/
     3 Resolving www.baidu.com... 14.215.177.38, 14.215.177.37  ##此处停顿约5秒
     4 Connecting to www.baidu.com|14.215.177.38|:80... connected.
     5 HTTP request sent, awaiting response... 200 OK
     6 Length: 2381 (2.3K) [text/html]
     7 Saving to: “index.html.1 8 
     9 100%[============================================>] 2,381       --.-K/s   in 0s      
    10 
    11 2017-05-29 12:29:54 (108 MB/s) - “index.html.1” saved [2381/2381]

    默认会优先解析 IPv6,在那个 domain 没有 IPv6 的情况下,会等待 IPv6 解析失败 timeout 之后才按以前的正常流程去找 IPv4

     1 [root@web02 scripts]# wget -4 www.baidu.com
     2 --2017-05-29 12:31:59--  http://www.baidu.com/
     3 Resolving www.baidu.com... 14.215.177.38, 14.215.177.37
     4 Connecting to www.baidu.com|14.215.177.38|:80... connected.
     5 HTTP request sent, awaiting response... 200 OK
     6 Length: 2381 (2.3K) [text/html]
     7 Saving to: “index.html.2 8 
     9 100%[============================================>] 2,381       --.-K/s   in 0s      
    10 
    11 2017-05-29 12:31:59 (96.3 MB/s) - “index.html.2” saved [2381/2381]

    瞬间完成

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  • 原文地址:https://www.cnblogs.com/ginvip/p/6917768.html
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