gitcafe 无法访问，求诊断

[vivisidea]

目前有以下已知情况

1. 系统是ubuntu12.04
2. chrome浏览器Version 39.0.2171.95 (64-bit)
3. SHELL下用curl访问正常，结果如下
vivi@ssd:~/scripts$ curl -v https://gitcafe.com/
* About to connect() to gitcafe.com port 443 (#0)
* Trying 117.79.146.98... connected
* successfully set certificate verify locations:
* CAfile: none
CApath: /etc/ssl/certs
* SSLv3, TLS handshake, Client hello (1):
* SSLv3, TLS handshake, Server hello (2):
* SSLv3, TLS handshake, CERT (11):
* SSLv3, TLS handshake, Server key exchange (12):
* SSLv3, TLS handshake, Server finished (14):
* SSLv3, TLS handshake, Client key exchange (16):
* SSLv3, TLS change cipher, Client hello (1):
* SSLv3, TLS handshake, Finished (20):
* SSLv3, TLS change cipher, Client hello (1):
* SSLv3, TLS handshake, Finished (20):
* SSL connection using ECDHE-RSA-RC4-SHA
* Server certificate:
* subject: OU=GT48459339; OU=See www.rapidssl.com/resources/cps (c)14; OU=Domain Control Validated - RapidSSL(R); CN=*.gitcafe.com
* start date: 2014-10-18 18:08:43 GMT
* expire date: 2016-10-20 22:39:21 GMT
* subjectAltName: gitcafe.com matched
* issuer: C=US; O=GeoTrust Inc.; CN=RapidSSL SHA256 CA - G3
* SSL certificate verify ok.
> GET / HTTP/1.1
> User-Agent: curl/7.22.0 (x86_64-pc-linux-gnu) libcurl/7.22.0 OpenSSL/1.0.1 zlib/1.2.3.4 libidn/1.23 librtmp/2.3
> Host: gitcafe.com
> Accept: */*
>
< HTTP/1.1 200 OK
(后面输出省略)

4. chrome访问显示ERR_CONNECTION_RESET
5. chrome://net-internals/#events看到的日志
20082: URL_REQUEST
https://gitcafe.com/
Start Time: 2015-01-10 12:57:50.780

t=1783 [st= 0] +REQUEST_ALIVE [dt=241]
t=1783 [st= 0] URL_REQUEST_DELEGATE [dt=0]
t=1783 [st= 0] URL_REQUEST_START_JOB [dt=0]
--> load_flags = 336658433 (BYPASS_DATA_REDUCTION_PROXY | MAIN_FRAME | MAYBE_USER_GESTURE | VALIDATE_CACHE | VERIFY_EV_CERT)
--> method = "GET"
--> priority = "HIGHEST"
--> url = "https://gitcafe.com/"
t=1783 [st= 0] +URL_REQUEST_START_JOB [dt=241]
--> load_flags = 336658433 (BYPASS_DATA_REDUCTION_PROXY | MAIN_FRAME | MAYBE_USER_GESTURE | VALIDATE_CACHE | VERIFY_EV_CERT)
--> method = "GET"
--> priority = "HIGHEST"
--> url = "https://gitcafe.com/"
t=1783 [st= 0] URL_REQUEST_DELEGATE [dt=0]
t=1783 [st= 0] HTTP_CACHE_GET_BACKEND [dt=0]
t=1783 [st= 0] HTTP_CACHE_OPEN_ENTRY [dt=0]
--> net_error = -2 (ERR_FAILED)
t=1783 [st= 0] HTTP_CACHE_CREATE_ENTRY [dt=1]
t=1784 [st= 1] HTTP_CACHE_ADD_TO_ENTRY [dt=0]
t=1784 [st= 1] URL_REQUEST_DELEGATE [dt=0]
t=1784 [st= 1] +HTTP_STREAM_REQUEST [dt=78]
t=1862 [st= 79] SSL_VERSION_FALLBACK
--> TLS 1.2 ==> TLS 1.1
--> host_and_port = "gitcafe.com:443"
--> net_error = -101 (ERR_CONNECTION_RESET)
t=1862 [st= 79] -HTTP_STREAM_REQUEST
t=1862 [st= 79] +HTTP_STREAM_REQUEST [dt=70]
t=1932 [st=149] SSL_VERSION_FALLBACK
--> TLS 1.1 ==> TLS 1.0
--> host_and_port = "gitcafe.com:443"
--> net_error = -101 (ERR_CONNECTION_RESET)
t=1932 [st=149] -HTTP_STREAM_REQUEST
t=1932 [st=149] HTTP_STREAM_REQUEST [dt=92]
t=2024 [st=241] -URL_REQUEST_START_JOB
--> net_error = -101 (ERR_CONNECTION_RESET)
t=2024 [st=241] URL_REQUEST_DELEGATE [dt=0]
t=2024 [st=241] -REQUEST_ALIVE
--> net_error = -101 (ERR_CONNECTION_RESET)
6. 尝试了firefox/opera居然也都不能访问，一样的情况
7. 访问其他https网站完全正常
8. 没有使用代理