Thanks for your reply,we are able to send udp packets but unable to get the value for sockets and how to pass the socket value inside the udp_send to function.
1. how to use socket to get a valid return value,since the return value is zero for opening socket.kindly suggest a option to get a valid return value for socket with out using eternet (using only serial port) regards ramash Frédéric BERNON-2 wrote: > >> Dear All, >> Our project team is trying to send data using point to point >> protocol,We >> are using PPP 2.4 version with LWIP.We are able to establish a PPP link >> and >> got IP address from ISP using our own drivers.After this we have the >> following issues. > > To be sure to understand, do you use the ppp stack provided with lwIP > sources, or your own one? What lwIP release do you use? > >> 1.We are unable to pass the IP packets ,since there are more files such >> as >> tcp.c,ip.c,tcpip.c,udp.c..etc.Through which file we have to send data >> that >> is IP packets. > > I will suppose you have implement your own PPP. So, if you use sockets > API, > you should send them to the tcpip_input function (sockets API and netconn > API use the same entry point) > >> 2.We decided to use sockets to send packets,but it does not returns a >> socket >> id like windows socket API. > > lwip_socket/socket return an "int", this one is valid is it's >=0. Windows > socket API return a SOCKET type, which is also an "int" > >> 3.we are confused to decide a code flow to send tcp/ip packets. also in >> a >> file called ip.c the function ip_init is empty but defined, a comment is >> mentioned inside the function "/* no initializations as of yet */". >> >> kindly reply us to find a correct path. > > The CVS head is now more simple for init. The best if you know Windows is > to > look the lwip/contrib/ports/msvc6 port which is updated for initialization > parts. > Once initialized, you can use sockets API like on any systems. > > You can also found some informations on : > > http://lwip.scribblewiki.com/LwIP_Main_Page > >> -- >> View this message in context: >> http://www.nabble.com/PPP-tf4741948.html#a13560146 >> Sent from the lwip-users mailing list archive at Nabble.com. >> >> >> >> _______________________________________________ >> lwip-users mailing list >> [email protected] >> http://lists.nongnu.org/mailman/listinfo/lwip-users >> > > > > > _______________________________________________ > lwip-users mailing list > [email protected] > http://lists.nongnu.org/mailman/listinfo/lwip-users > > -- View this message in context: http://www.nabble.com/PPP-tf4741948.html#a13605559 Sent from the lwip-users mailing list archive at Nabble.com. _______________________________________________ lwip-users mailing list [email protected] http://lists.nongnu.org/mailman/listinfo/lwip-users
