[lwip-devel] [task #6969] Review usage of conn->err in netconn layer

[Simon Goldschmidt]

Follow-up Comment #17, task #6969 (project lwip):

To make progress on this, I've made a list of all the places where conn->err
is checked:

api_lib.c:
netconn_recv -> dunno... we mustn't block on error...
netconn_send -> let do_send handle errors
netconn_write -> let do_write handle errors

api_msg.c:

do_listen -> state is already checked -> remove conn->err check
do_send -> remove conn->err check (udp_/raw_send will fail)
do_recv -> maybe check TCP state?
do_write -> check TCP state
do_join_leave_group -> ???

do_bind
 -> UDP/RAW: don't care / try again;
 -> TCP: check if pcb is in tcp_active_pcbs (not already bound or connected)


Any more ideas? Especially with do_join_leave_group and netconn_recv, I'm not
really sure...


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