I've been trying to port a ping application to cygwin that works by opening a RAW IP Socket and passing IPPROTO_ICMP (1) as the protocol parameter and then constructing ICMP Echo packets and sending them to the destination host. (In other words, The usual way of pinging.) While this application works just find on , AIX, Solaris, HPUX and Linux it is NOT working using Cygwin. Using tcpdump ( a packet sniffer ) on Linux I found out that packets where getting sent with a protocol number of 0 rather then IPPROTO_ICMP (1). Looking through the Cygwin sources I found that the cygwin_socket call takes the protocol parameter (3rd parameter) but does NOT pass it to the windows version of the socket call. Instead the call is hardcoded to take a zero (0). Does anyone know if this is intentional? Matt Brozowski Tavve Software Company -- Want to unsubscribe from this list? Check out: http://cygwin.com/ml/#unsubscribe-simple
