Hi,
I think that following problem shows problematic behavior
in cygwin 1.7.5, at least incompatible with linux:
#include<stdio.h>
#include<sys/socket.h>
int main() {
int sock, option, optlen =
sizeof(int);
sock = socket(AF_INET,
SOCK_STREAM, 0);
getsockopt(sock, SOL_SOCKET,
SO_KEEPALIVE,&option,&optlen);
printf("option=%d,
optlen=%d\n", option, optlen);
return 0;
}
Prints optlen=1, while it is expected to be sizeof(int),
i.e. 4.
This is most probably because uinderlying winsock call has
this (mis)behavior, but I think that in cygwin layer this
could be worked around to be more unix compatible.
This issue is relevant:
SO_KEEPALIVE value is actually a char on Windows, not BOOL
https://bugzilla.gnome.org/show_bug.cgi?id=611756
And causes glib gio 2.24 to fail certain socket operations
on cygwin.
thanks,
Pavel