[ENet-discuss] Problem with sending packets of certain sizes (near MTU)

[Steffen Kolodziej]

Yes, I use 1.1 as far as I know. I had 1.0 before and wasn't able to 
send any packets larger than MTU at all back then, but then I updated to 
1.1 and changed some other stuff.

Lee Salzman wrote:
> Are you using version 1.1 of ENet?
>
> Lee
>
> Steffen Kolodziej wrote:
>   
>> Hi!
>> I'm using enet - which I like a lot - with a basic-like programming 
>> language called BlitzMax. BlitzMax is somewhat able to interface with 
>> C/C++-code, but not quite smoothly. I had to write my own wrapper to 
>> make use of it. Therefore my error may be caused by other factors than 
>> enet, but I have no idea where else to post it.
>> Whenever I send (reliable, not checked for unreliable) packets with a 
>> size of more than 1356 bytes, they don't get to the recipient as well as 
>> any other packets sent in the same direction after it. Sending packets 
>> in the other direction still works and the connection is not noted to be 
>> dead by enet.
>> Looked like a MTU issue to me, but when i tried to send packets with 
>> significantly larger sizes (~2500 bytes) they worked perfectly, so 
>> packet fragmenting seems to work at least partly. Checking the MTU from 
>> my PC to the server via Ping in the console returned 1492 or 1500 (???) 
>> - not sure which one is right, but they're both quite a bit larger than 
>> enet's standard MTU of 1400 or the packet size at which i encountered 
>> the problem. I tried to change the server's enet's MTU, but it didn't 
>> help either. I'm not sure if i really changed it, though, because 
>> accessing the enet host's data fields is quite complicated through BlitzMax.
>> I guess the problem is caused by my configuration in some way, and not 
>> by enet, but i have no idea how to debug it and hope for some clues by a 
>> enet expert.
>>
>> Thank you for the otherwise great network library.
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>>
>>     
>
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