Issues connecting to lobby server.

Issues connecting to lobby server.

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dizekat
Posts: 438
Joined: 07 Dec 2007, 12:10

Issues connecting to lobby server.

Post by dizekat »

(I made a thread about it earlier, but it was locked for no good reason whatsoever. I said problem fixed for me, but it re-appeared. Also someone told me in lobby that they had same problem)

When I try to connect to lobby server from my ip, I do get connected and do get list of players, but I can not join any rooms on server, and all my messages including pings are ignored.
Everything works fine when using proxy.
The tcp connection just stops working, or sometimes works only uni-directionally for some short time.
I can ping server all right and can view this webpage.
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bibim
Lobby Developer
Posts: 959
Joined: 06 Dec 2007, 11:12

Re: Issues connecting to lobby server.

Post by bibim »

possible explanation:

There is a peering problem between your ISP and Fnordia's one.

When using a proxy, you change the network route and bypass the overloaded network link.

ISPs often set special QoS rules to increase the HTTP traffic priority on overloaded links, so that less people are complaining. This could explain why you don't have the same problem when accessing this forum.
dizekat
Posts: 438
Joined: 07 Dec 2007, 12:10

Re: Issues connecting to lobby server.

Post by dizekat »

I don't think that could be the case.... one time when i was having that problem, it worked perfectly for test server on 8300
Also, ICMP pings go with very little losses.
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bibim
Lobby Developer
Posts: 959
Joined: 06 Dec 2007, 11:12

Re: Issues connecting to lobby server.

Post by bibim »

dizekat wrote:I don't think that could be the case.... one time when i was having that problem, it worked perfectly for test server on 8300
Are you refering to the test server which is in France ? :?
dizekat wrote:Also, ICMP pings go with very little losses.
Low sized ICMP packets such as those sent by default with simple ping commands don't show all problems...
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aegis
Posts: 2456
Joined: 11 Jul 2007, 17:47

Re: Issues connecting to lobby server.

Post by aegis »

the server on 8300 is completely different software... maybe tasserver isn't running select() on your socket for some reason
dizekat
Posts: 438
Joined: 07 Dec 2007, 12:10

Re: Issues connecting to lobby server.

Post by dizekat »

I got it resolved (or actually, just found a workaround), thanks to BrainDamage.
Had to set smaller MTU . The largest MTU that works for me is 1052 . 1053 and above does not work. Standard is 1500.
for linux users, command is
ifconfig eth0 mtu 1052
(as root) , try different values until works.

Thats a huge 0_O by the way. Things like that make you wonder how internet is still working.
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aegis
Posts: 2456
Joined: 11 Jul 2007, 17:47

Re: Issues connecting to lobby server.

Post by aegis »

default mtu should be 1500 anyway iirc...
dizekat
Posts: 438
Joined: 07 Dec 2007, 12:10

Re: Issues connecting to lobby server.

Post by dizekat »

aegis wrote:default mtu should be 1500 anyway iirc...
1500 doesnt work. anything >1052 doesnt work.
Apparently, some node somewhere has max mtu = 1052 and doesnt properly send "datagram too big" bounces, or those dont arrive.
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