[lwip-users] PPP connection problem

[Charles-Christophe Thomart]

Hello all,

I am using lwIP/ppp in a phone for mms operations, and have some problems to 
establish ppp connection.
Here is the lwip trace :
===========================
lcp_init: xmit_accm=0 0 0 0
pppMain: unit 0: Connecting
pppStartCB: unit 0
ppp_set_xaccm[0]: outACCM=0 0 0 0
ppp_send_config[0]: out ACCM=FF FF FF FF
ppp_recv_config[0]: inACCM=0 0 0 0
lcp_lowerup: asyncmap=0 0 0 0
LCP: lowerup state 0 -> 2
auth_reset: 0
lcp_addci: L opt=2 0
lcp_addci: L opt=5 1
lcp_addci: opt=7
lcp_addci: opt=8
pppWrite[0]: len=50
fsm_sdata(LCP): Sent code 1,1,20
LCP: sending Configure-Request, id 1
LCP: open state 2 -> 6
pppInProc[0]: got 9 bytes
pppInProc[0]: got 9 bytes
pppInProc[0]: got 9 bytes
pppInProc[0]: got 9 bytes
pppInProc[0]: got 9 bytes
pppInProc[0]: got 6 bytes
pppInProc[0]: got 9 bytes
pppInProc[0]: got 9 bytes
pppInProc[0]: got 6 bytes
===========================

PPP logs on server side give :
===========================
Sent [LCP ConfReq id=0x22f8dc <asyncmap 0x22f8dc> <auth pap> <magic 
0x22f8dc>]
Rcvd [LCP ConfReq id=0x22f9bc <asyncmap 0x22f9bc> <magic 0x22f9bc> <pcomp> 
<accomp>]
Sent [LCP ConfRej id=0x22f89c <pcomp> <accomp>]
===========================

First of all, I do not understand why the request ids differ. They should be 
the same, shouldn't they?
Does anybody have a clue on where to look for the problem?
The "pppInProc[0]: got 9 bytes" means data is exchanged but not recognized 
by lwIP. Could this be an asyncmap problem?

We have tested our modem with small amount of data (100chars max at the same 
time), so I do not think it is a problem for LCP. I will however check it 
more.

Thanks and regards,
Charles-Christophe