求助：为什么 V2EX 的所有图片（包括头像）都无法显示？

V2EX = way to explore

V2EX 是一个关于分享和探索的地方

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V2EX 提问指南

这是一个创建于 2831 天前的主题，其中的信息可能已经有所发展或是发生改变。

RT ，从上周开始，无论是图片，头像，甚至是右侧的广告图片都无法正常显示，测试了 Safari 和 chrome 下都不可以，清除 cookie 也没用，大家有遇到这种情况吗？

头像

图片

V2EX

Safari

5 条回复 • 2017-02-20 15:04:31 +08:00

msg7086

2017-02-20 14:47:36 +08:00

$ curl https://v2ex.assets.uxengine.net/avatar/3231/749a/68006_normal.png -v
* Trying 23.251.105.133...
* TCP_NODELAY set
* Connected to v2ex.assets.uxengine.net (23.251.105.133) port 443 (#0)
* ALPN, offering h2
* ALPN, offering http/1.1
* Cipher selection: ALL:!EXPORT:!EXPORT40:!EXPORT56:!aNULL:!LOW:!RC4:@STRENGTH
* successfully set certificate verify locations:
* CAfile: /etc/ssl/certs/ca-certificates.crt
CApath: /etc/ssl/certs
* TLSv1.2 (OUT), TLS header, Certificate Status (22):
* TLSv1.2 (OUT), TLS handshake, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Server hello (2):
* TLSv1.2 (IN), TLS handshake, Certificate (11):
* TLSv1.2 (IN), TLS handshake, Server key exchange (12):
* TLSv1.2 (IN), TLS handshake, Server finished (14):
* TLSv1.2 (OUT), TLS handshake, Client key exchange (16):
* TLSv1.2 (OUT), TLS change cipher, Client hello (1):
* TLSv1.2 (OUT), TLS handshake, Finished (20):
* TLSv1.2 (IN), TLS change cipher, Client hello (1):
* TLSv1.2 (IN), TLS handshake, Finished (20):
* SSL connection using TLSv1.2 / ECDHE-RSA-AES128-GCM-SHA256
* ALPN, server accepted to use h2
* Server certificate:
* subject: CN=cdn.v2ex.co
* start date: Feb 5 18:11:00 2017 GMT
* expire date: May 6 18:11:00 2017 GMT
* subjectAltName: host "v2ex.assets.uxengine.net" matched cert's "v2ex.assets.uxengine.net"
* issuer: C=US; O=Let's Encrypt; CN=Let's Encrypt Authority X3
* SSL certificate verify ok.
* Using HTTP2, server supports multi-use
* Connection state changed (HTTP/2 confirmed)
* Copying HTTP/2 data in stream buffer to connection buffer after upgrade: len=0
* Using Stream ID: 1 (easy handle 0x5637264abd60)
> GET /avatar/3231/749a/68006_normal.png HTTP/1.1
> Host: v2ex.assets.uxengine.net
> User-Agent: curl/7.52.1
> Accept: */*
>
* Connection state changed (MAX_CONCURRENT_STREAMS updated)!
< HTTP/2 502
< server: nginx/1.11.3
< date: Mon, 20 Feb 2017 06:47:12 GMT
< content-type: text/html
< content-length: 173
<
<html>
<head><title>502 Bad Gateway</title></head>
<body bgcolor="white">
<center><h1>502 Bad Gateway</h1></center>
<hr><center>nginx/1.11.3</center>
</body>
</html>
* Curl_http_done: called premature == 0
* Connection #0 to host v2ex.assets.uxengine.net left intact

cs202

2017-02-20 14:56:45 +08:00

@msg7086 在我这里不工作：
➜ ~ curl https://v2ex.assets.uxengine.net/avatar/3231/749a/68006_normal.png -v
* Could not resolve host: v2ex.assets.uxengine.net
* Closing connection 0
curl: (6) Could not resolve host: v2ex.assets.uxengine.net
➜ ~

misaka19000

2017-02-20 14:59:39 +08:00 via Android

坐标和网络环境是什么？

b821025551b

2017-02-20 15:01:40 +08:00

@cs202 #2 Could not resolve host ，所以 dns 有问题了？

cs202

2017-02-20 15:04:31 +08:00

@misaka19000 美国， Comcast. DNS 的问题？