Hi!
There doesn't seem to be a way to detect that a remote host sends a RST
message when using non blocking read. In lwip_recvfrom when a host does
a regular gracious shutdown this bit of code returns 0:
/* We should really do some error checking here. */
LWIP_DEBUGF(SOCKETS_DEBUG, ("lwip_recvfrom(%d): buf == NULL,
error is \"%s\"!\n",
s, lwip_strerr(err)));
sock_set_errno(sock, err_to_errno(err));
if (err == ERR_CLSD)) {
return 0;
} else {
return -1;
But if a RST is sent then it returns -1, which is the same return code
as no data available. When I changed the code to:
if ((err == ERR_CLSD) ||(err == ERR_RST)) {
return 0;
} else {
return -1;
then I can detect a RST. Is there a problem doing it that way? Or should
a check for RST in another way?
Cheers
/Johnny Karlsson
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