[ENet-discuss] Send big packets in unstable wireless network problem

[Pablo de Heras Ciechomski]

Hi Eric,

1) I have my connection manager on top of ENet that re-connects
automatically if needed. It does happen sometimes mostly due to the server
flooding the client with packets thus "clogging" the router. I would also
increase the time-out and rely on my own "heartbeat" packet.

2) I fragment myself. In wireless usually 1-2% of packets are dropped.
However with large packets this adds up and your "mega-packet" will be
dropped (if you tell ENet to ignore fragment errors).

Best regards,

Pablo

On Fri, Jun 26, 2015 at 1:19 PM, Ruud van Gaal <ruud at racer.nl> wrote:

> For 1 I would increase the timeout, but I have no practical experience
> with wireless and enet.
> For 2 I think it's better to split yourself. You could then allow some
> packets to drop and re-request missed parts of the transferred file
> yourself. This keeps communication more efficient than a single send &
> retry (if only 1 of the UDP packets of a fragmented packet fails, I assume
> the entire fragment fails, which will happen too much in wireless).
>
> Cheers,
> Ruud
>
> On Fri, Jun 26, 2015 at 11:49 AM, Eric Young <evilbrave at gmail.com> wrote:
>
>> Hi all,
>>
>> I use enet in my project to tansfer file in wireless network but I met
>> some problems.
>> 1. Wireless is unstable so sometimes enet disconnect unexpectedly.
>> Should I change these settings?  (1) enet_peer_ping_interval or (2)
>> enet_peer_timeout  to avoid this unstable network disconnect ?
>> or this should be normal case so I shouldn't change these timeout configs?
>>
>> 2. Fragment is enet's feature for big packet?
>> If I have a huge packet and its size is over 100000 B, send huge packet
>> directly (fragment by enet)or I should send many small divided
>> packets(packet size under MTU )orderly if I could split the packet content?
>> IMO, if I can send small divided packets and enet is just responsible for
>> assemble. But if I send huge packet directly, enet would handle packet both
>> fragment and assemble.
>> which one is better performance for enet packet transfering?
>>
>> thanks in advence.
>>
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>>
>>
>
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