- group A consisting of all people who can connect to any of Graham's engine tourney broadcasts (or any other similar broadcast) via TLCV (or any other similar client), watch games and chat with all other members of group A, and
- group B consisting of just me.
Neither the root cause for that split nor any solution has been found so far
I tried a lot of approaches to analyze and solve that annoying problem (see more details below), nothing helped so far. So now I think I need some external help, so who would be willing to assist? Here are the facts.
Symptom:
Start TLCV client (or any other similar client), host GrahamCCRL.dyndns.org, port 16002 (or any other valid port), click "Connect", wait some seconds => message box appears (example for TLCV):
Environment:Timeout
Connection failed. No response from server.
OK
a) Windows 7 laptop at home via Fritz!Box 7490 with recent OS version
b) Windows 10 laptop at home via same Fritz!Box
c) same Windows 7 laptop at work (I did not try the Windows 10 laptop at work but I expect the same error)
Wireshark analysis on Win7 laptop:
(Filter is set to "ip.addr == 222.154.252.101")
Code: Select all
188 26.250630 primus.fritz.box 222.154.252.101 UDP 55 16002 → 16002 Len=13
208 29.262465 primus.fritz.box 222-154-252-101.adsl.xtra.co.nz UDP 55 16002 → 16002 Len=13
219 32.273341 primus.fritz.box 222-154-252-101.adsl.xtra.co.nz UDP 55 16002 → 16002 Len=13
251 35.284379 primus.fritz.box 222-154-252-101.adsl.xtra.co.nz UDP 55 16002 → 16002 Len=13
(... last package expanded, mac addresses removed ...)
Frame 251: 55 bytes on wire (440 bits), 55 bytes captured (440 bits) on interface 0
Ethernet II, Src: primus.fritz.box (xx:xx:xx:xx:xx:xx), Dst: fritz.box (xx:xx:xx:xx:xx:xx)
Destination: fritz.box (xx:xx:xx:xx:xx:xx)
Source: primus.fritz.box (xx:xx:xx:xx:xx:xx)
Type: IPv4 (0x0800)
Internet Protocol Version 4, Src: primus.fritz.box (192.168.178.20), Dst: 222-154-252-101.adsl.xtra.co.nz (222.154.252.101)
User Datagram Protocol, Src Port: 16002, Dst Port: 16002
Data (13 bytes)
Data: 4c4f474f4e7631353a5376656e
[Length: 13]
Code: Select all
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. Alle Rechte vorbehalten.
C:\Users\sven>tracert grahamccrl.dyndns.org
Routenverfolgung zu grahamccrl.dyndns.org [222.154.252.101] über maximal 30 Abschnitte:
1 <1 ms <1 ms <1 ms fritz.box [192.168.178.1]
2 19 ms 19 ms 19 ms 192.0.0.1
3 19 ms 19 ms 19 ms 62.214.37.241
4 19 ms 19 ms 19 ms 62.214.37.126
5 20 ms 20 ms 19 ms bei-b1-link.telia.net [213.155.129.190]
6 193 ms 193 ms 193 ms hbg-bb1-link.telia.net [62.115.142.182]
7 197 ms 197 ms 197 ms ldn-bb3-link.telia.net [80.91.249.10]
8 119 ms 119 ms 119 ms ash-bb3-link.telia.net [80.91.246.68]
9 187 ms 186 ms 186 ms las-b21-link.telia.net [62.115.137.37]
10 185 ms 185 ms 186 ms tnzusa-ic-316539-las-b21.c.telia.net [62.115.145.207]
11 * * * Zeitüberschreitung der Anforderung.
12 * * * Zeitüberschreitung der Anforderung.
13 * * * Zeitüberschreitung der Anforderung.
14 * 304 ms 304 ms tkh-ip24-int.msc.global-gateway.net.nz [122.56.116.14]
15 308 ms 309 ms 309 ms 222-154-224-9.adsl.xtra.co.nz [222.154.224.9]
16 * * * Zeitüberschreitung der Anforderung.
17 * * * Zeitüberschreitung der Anforderung.
...
Code: Select all
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\SharedAccess\Parameters\FirewallPolicy\FirewallRules
TCP Query User{617A0692-0A5B-418C-84B0-7E8A65F8088C}C:\Program Files (x86)\Tom's Live Chess Viewer\chess_viewer.exe
v2.10|Action=Allow|Active=TRUE|Dir=In|Protocol=6|Profile=Private|App=C:\program files (x86)\Tom's Live Chess Viewer\chess_viewer.exe|Name=chess_viewer.exe|Desc=chess_viewer.exe|Defer=User|
TCP Query User{ECE68DF0-1650-4B0D-BB9D-E88701FA1664}C:\Program Files (x86)\Tom's Live Chess Viewer\chess_viewer.exe
v2.10|Action=Allow|Active=TRUE|Dir=In|Protocol=6|Profile=Public|App=C:\program files (x86)\Tom's Live Chess Viewer\chess_viewer.exe|Name=chess_viewer.exe|Desc=chess_viewer.exe|Defer=User|
UDP Query User{7481287A-D0B7-425D-AB52-44D317999126}C:\Program Files (x86)\Tom's Live Chess Viewer\chess_viewer.exe
v2.10|Action=Allow|Active=TRUE|Dir=In|Protocol=17|Profile=Public|App=C:\program files (x86)\Tom's Live Chess Viewer\chess_viewer.exe|Name=chess_viewer.exe|Desc=chess_viewer.exe|Defer=User|
UDP Query User{EE96593B-D074-4E79-9F76-FEBEE51E9737}C:\Program Files (x86)\Tom's Live Chess Viewer\chess_viewer.exe
v2.10|Action=Allow|Active=TRUE|Dir=In|Protocol=17|Profile=Private|App=C:\program files (x86)\Tom's Live Chess Viewer\chess_viewer.exe|Name=chess_viewer.exe|Desc=chess_viewer.exe|Defer=User|
Using TLCV worked perfectly for me for a long time on both computers! On 15-oct-2017 I suddenly observed the failure on my Win7 laptop (without remembering any changed I might have made), and when I tried to connect from the Win10 laptop it now failed there as well even though I had not used the Win10 laptop for several days back then, so no configuration change was done there by intent.
Typical attempts that did not help so far:
- rebooted/switched off all PCs every day since then ...
- uninstalled/reinstalled TLCV
- uninstalled TLCV, manually cleaned old registry entries of TLCV, then reinstalled TLCV
- updated Fritz!Box firmware
- tried various Fritz!Box settings, e.g. used different DNS servers, ...
- tried uppercase/lowercase issues of path names in firewall registry entries
- disabled Windows firewall
- disabled Virus scanner (currently Avira on both PCs)
- used different broadcast client (same behaviour)
I get the impression that I pretty much excluded "everything" already, but that is not a logical explanation. The occurrence of the same problem with one of my PCs in a totally different network seems to prove that it is something only on my PCs, but surprisingly on both PCs at once.
So what the hell is it? I think I would need someone who shows me where else to look, and who can also show me how his own working system looks like.