Forum OpenACS Development: Re: can't connect to openacs.org port 80: network is unreachable

Not sure, i under stand you correctly. openacs.org runs since many years here in Vienna on one of our research machines, it is not a VM. However, lately, there were several changes for DNS entries going on, since there were problems with recipients on gmail via IPv6, so maybe there was some collateral damage ...
Aside from the lack of support for IPv6 on my end, ad_proc ns_http works fine against several other endpoints. (ex. google REST APIs, etc).
Most of them, I've used ad_procs [ns_http], [util::http::get] and [util::http::post]

But when the URL is http://openacs.org/repository/ or https://openacs.org/repository/, they fail.

The source code is 5.9.2d1, http://openacs.org/repository/download/apm/acs-kernel-5.9.2d1.apm

Furthermore, in a different environment, different server and hosting provider, network is reachable and the page /acs-admin/install/install works fine.

I've written messages whing error.log, to confirm that URLs are the same.

[25/Nov/2018:20:43:37][762.7fd427d1a700][-conn:litli:0:304-] Notice: Running ad_proc util::http::native::request ...(****** http://openacs.org/repository/
[25/Nov/2018:20:43:37][762.7fd427d1a700][-conn:litli:0:304-] Notice: Running ad_proc util::http::native::request ...(****** https://openacs.org/repository/

traceroute command shows nothing unusual, tested from both servers.

1) From the server, which Network is reachable. 9 hoops.

2) From the server, which Network is unreachable. Although It has more hoops ( ie. 12), it does reach pa-outside.wu-wien.ac.at

litli@litli:~$ traceroute 137.208.116.31
traceroute to 137.208.116.31 (137.208.116.31), 30 hops max, 60 byte packets
1 * * *
2 te0-0-0-2.rcr11.b011027-3.yyz02.atlas.cogentco.com (38.122.101.121) 3.819 ms 3.888 ms 3.851 ms
3 te0-1-0-10.ccr31.yyz02.atlas.cogentco.com (154.54.6.237) 3.547 ms 3.554 ms 4.184 ms
4 level3.yyz02.atlas.cogentco.com (154.54.11.210) 3.972 ms 3.936 ms 3.878 ms
5 ae-2-2.bar4.Vienna1.Level3.net (4.69.148.154) 107.752 ms 107.725 ms 107.667 ms
6 ACONET.bar4.Vienna1.Level3.net (212.73.203.18) 107.459 ms 107.235 ms 107.195 ms
7 wien1.aco.net (193.171.13.17) 107.031 ms 106.971 ms 106.983 ms
8 ex-1.wu-wien.ac.at (193.171.13.18) 106.846 ms 106.889 ms 106.848 ms
9 pa-outside.wu-wien.ac.at (137.208.9.41) 107.682 ms 108.000 ms 107.866 ms
10 * * *
11 * * *
12 * * *
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
19 * * *
20 * * *
21 * * *
22 * * *
23 * * *
24 * * *
25 * * *
26 * * *
27 * * *
28 * * *
29 * * *
30 * * *

iurix@iurix:/var/www/iurix$ traceroute 137.208.116.31
traceroute to 137.208.116.31 (137.208.116.31), 30 hops max, 60 byte packets
1 * * *
2 ae0-14.border1.denver4.handynetworks.com (68.71.128.69) 0.199 ms 0.225 ms 0.219 ms
3 10ge13-1.core1.den1.he.net (216.66.78.125) 0.440 ms 0.688 ms 0.801 ms
4 100ge14-1.core1.mci3.he.net (184.105.64.50) 10.771 ms 10.803 ms 10.844 ms
5 100ge15-1.core2.chi1.he.net (184.105.222.78) 31.333 ms 31.386 ms 100ge8-1.core2.chi1.he.net (184.105.81.210) 23.279 ms
6 100ge16-1.core1.nyc4.he.net (184.105.223.162) 39.866 ms 39.672 ms 39.653 ms
7 100ge4-1.core1.par2.he.net (184.105.81.78) 129.829 ms 129.707 ms 129.413 ms
8 100ge5-2.core1.vie1.he.net (184.105.65.6) 126.558 ms 126.575 ms 126.578 ms
9 wien1.aco.net (193.203.0.1) 126.930 ms 126.948 ms 126.871 ms
10 ex-1.wu-wien.ac.at (193.171.13.18) 126.795 ms 126.798 ms 126.774 ms
11 ex-1.wu-wien.ac.at (193.171.13.18) 126.984 ms pa-outside.wu-wien.ac.at (137.208.9.41) 127.344 ms ex-1.wu-wien.ac.at (193.171.13.18) 126.967 ms
12 * pa-outside.wu-wien.ac.at (137.208.9.41) 127.518 ms *
13 * * *
14 * * *
15 * * *
16 * * *
17 * * *
18 * * *
19 * * *
20 * * *
21 * * *
22 * * *
23 * * *
24 * * *
25 * * *
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29 * * *
30 * * *