Hi,
I have successfully integrated lwIP version 1.2.0 in a PowerPC microcontroller
running SMX RTOS
thanks to the support I have gotten from lwIP community. I am now trying to
implement non-blocking socket operation for
connect() and write(). For accept() and read() the socket is now non-blocking
since I use select().
I am aware that there is such a thread previously, however it ends with no
clear result.
I am wondering why do we have to block write() from the first place?
And as for connect(), I am planing to implement the following changes:
1. in netconn_connect(), if the O_NONBLOCK flag is set, then use
sys_arch_mbox_try_fetch() and return EINPROGRESS. Then set the netconn state
to NETCONN_CONNECT. Any subsequent connect checks the NETCONN_CONNECT state and
returns EALREADY
2. Use the callback function to set the sendevent to plus in the do_connected().
3. Select() after connection is established will then return a non-zero nready
for the writeset.
The application then call sys_arch_mbox_tryfetch, free the message, reset the
send event to zero and can now begin writing/reading to the socket.
Is there any changes or conflicts I should be aware of if i do implement these
changes ?
I am thankful for any advices you guys could offer,
_________________________________________________________________
Need to know the score, the latest news, or you need your Hotmail®-get your
"fix".
http://www.msnmobilefix.com/Default.aspx
_______________________________________________
lwip-users mailing list
lwip-users@nongnu.org
http://lists.nongnu.org/mailman/listinfo/lwip-users
