synack invalid @ win2003 server

[hanno]

currently im busy with a clanchat app in c++, works all fine, but win2003 has problm with syn-ack of the packages, ack packages are sended 3 times instead of 1 time.., the syn got blocked the first two times and only allow it to confirm after the 3th..

information : twinconnect (port 91 & 92) @ winsock (2) for syn-ack confirmation.
I think its the buildin firewall (i prefeder to leave it on).
Anyone know how to add an forward rule into it?

 

[Aurora]

1) Did you make the network code yourself ?

perhaps its a problem in how you handle packets.

2) I doubt its the firewall, if it where, it woudnt take 3 packets, it would take none couz the firewall woudnt allow packets in or out in the first place.

my guess its in the packet handler you got, or in the way you use it in winsock.

but, out of the little description its hard to say

Also, althought port 91, 92 shoudnt be used for private apps, i doubt its the reservations thats messing with you.

port | reserved for
91 MIT Dover Spooler.
92 Network Printing Protocol.

you should always go for high end ports like 10000+ or higher.

0~999 is usually mostly reserved for windows / linux stuff ect, and a few in the 1k range for other stuff like SQL ect.

Anyways, still tho, i would say its the network code you made.

 

[hanno]

rofl, its fixed didnt watched the reserverd poorts.

and yup, i made it all my self.
because it may not conflict with other applications that i will make, this system will be used for a little multiplayer shooter

 

[Aurora]

rofl, its fixed didnt watched the reserverd poorts.

and yup, i made it all my self.
because it may not conflict with other applications that i will make, this system will be used for a little multiplayer shooter

good to hear its fixed

and indeed, writing a own network code that is reusable (like a dll or lib) is alpha and omega if you wanna do more stuff like it later.