Hi @all
during the last days I tried to implement a (serial) PPP server on top
of lwIP without OS support. Finally I succeeded, but in three aspects I
wonder if I did it the "right way". Maybe one of you can give me advice
how to do it better?
First I wanted the PPP server to be silent until a request comes in from
the remote side. I achieved this by modifying the flag "wo->silent"
inside the function lcp_init() by setting it to 1. I think it would be
better to do this from outside the library. But since
pppOverSerialOpen() calls lcp_init() and then initiates the first
request, I did not find out how to do it in between.
Second the server needs fixed IP-addresses and has to pass them over to
the remote side. To do it I implemented something like:
PppHandle = pppOpen(0, LinkStatusProc, NULL);
if (PppHandle > 0)
{
ipcp_wantoptions[PppHandle].ouraddr = ownIp;
ipcp_wantoptions[PppHandle].hisaddr = remoteIp;
}
Is it correct to modify the wantoptions directly or is there an API
function (or callback) to do it better?
Finally after a link has gone. The PPP server needs to fall back into a
state where it is ready to negotiate a new connection. I did a
pppClose() -> pppOpen() to reopen the interface. Maybe there is
something more efficient to do it?
Thank you in advance!
Best regards,
Daniel
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