[ENet-discuss] problem creating enet host

[Martin Zemblowski]

NAT part is covered by gamespy, i get two addresses of machines 
involved. then i try to create host (not peer!) on mac and it fails 
sometimes (question: why?). if it succeeds, then we go to making 
connections business ;)
Regards!

On 18/09/2012 16:40, Daniel Aquino wrote:
> Both hosts should try to send to one another at the same time from/to 
> predefined ports.
>
> https://en.wikipedia.org/wiki/UDP_hole_punching
>
>
>
>
> On Tue, Sep 18, 2012 at 11:24 AM, Martin Zemblowski 
> <martin at bigheadgames.co.uk <mailto:martin at bigheadgames.co.uk>> wrote:
>
>     gamespy transport service is using udp.
>     right now one of the player creates socket and just listens to it,
>     another on is actively trying to connect to other party, but fails
>     at create_host for some reasons. I am creating host in the same
>     way on both machines.
>
>     I am testing connectivity on the same machines constantly, so I
>     dont see any reason why it should work for 3 times in a row and
>     then wouldnt... and it's a bit weird moment - creating host, i
>     would expect it to fail when actually trying to connect
>     :(
>
>
>
>     On 18/09/2012 16:16, Daniel Aquino wrote:
>>     Is gamespy using tcp or udp ?
>>
>>     If both your players try to connect at the same time then they
>>     should get through after a retry or two.
>>
>>     Although there is many types of nat's so it might not always work.
>>
>>
>>
>>     On Tue, Sep 18, 2012 at 10:37 AM, Martin Zemblowski
>>     <martin at bigheadgames.co.uk <mailto:martin at bigheadgames.co.uk>> wrote:
>>
>>         Hello!
>>         I am using enet library in conjunction with gamespy. I use
>>         gamespy to create socket, connect to lobby, select opponent
>>         and do the NAT punch-through. In next step I close gamespy
>>         socket, initialize enet library and try to create enet host
>>         with same port (in my case I pass ip as empty string) and
>>         then start connection to other party. It works, but not
>>         always. I am using three computers right now: pc vista, pc xp
>>         and mac osx 10.7.4. On mac sometimes (not always) I cannot
>>         create enet host (even if i try to create host with different
>>         ports, 100 retries), here's the code:
>>
>>         retries = 101;
>>         enet_address_set_host (&enet.gAddress, ip);
>>         do    {
>>             enet.gAddress.port = port;
>>             enet.gHost = enet_host_create (&enet.gAddress , 1 , 2, 0
>>         ,0 );
>>
>>             if (enet.gHost == NULL)
>>             {
>>                 printf ( "An error occurred while trying to create an
>>         ENet host(%s:%d).\n",ip,port);
>>                 port++; // HACK
>>             }
>>             else
>>                 printf( "host created.\n");
>>             } while (enet.gHost == NULL && (--retries > 0));
>>
>>         Any ideas?
>>         Thank you!
>>         Martin
>>
>>
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>>
>>
>>
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>
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