[maemo-developers] general question about wireless communication

[From: J HU]

Dear all,

I would like to ask you a general question about wireless communication.

I'm doing some proves with UDP. I'm sending messages between a Nokia700 and 
a computer which are in Ad-Hoc mode.

I know that the maximum message size in UDP is 65Kbytes but I don't know 
why, when I send a message of 50Kbytes for example, the application doesn't 
receive it. It's so strange because I capture the wireless traffic with an 
application like the "tcpdump" and this application receives the message, so 
it means that the message is sent and also received but it's not delivered 
to the application,the receive function of the UDP doesn't returns anything 
how it was descarted...

I have to add that If I send messages of 40Kbytes for example they are 
received without any problem, so I don't know if theres any kind of 
parameter I should change or what happens.

I have also try to chang the size of the send buffer and the receive buffer 
using the setsockopt() to SO_SNDBUF and SO_RCVBUF and I fix it to 65535, it 
seems that the PC receive the messages but the Nokia700 still doesn't 
receive them.

Anyone has had any problem like that or has any idea?

Thanks in advance.

J.

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