Hello everybody!
To clarify my problem reported last week:
My program lists
#include <arpa/inet.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#include <netdb.h>
#include <sys/socket.h>
#include <sys/time.h>
#include <sys/wait.h>
#include <ctype.h>
#include <fcntl.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/uio.h>
#include <sys/utsname.h>
#include <sys/unistd.h>
#include <stdarg.h>
#include <unistd.h>
#include <errno.h>
which works with Linux and AIX.
If I try this with cygwin it compiles, but upon call it says
setsockopt(IP_MULTICAST_LOOP)
errno=14 (Bad address)
The offending part is
char c;
c=0;
if (setsockopt(sock, IPPROTO_IP,
IP_MULTICAST_LOOP, (void*)&c, sizeof(c)))
ERROR("setsockopt(IP_MULTICAST_LOOP)");
After changing the "char" to an "int" I get
setsockopt(IP_MULTICAST_LOOP)
errno=109 (This option is unsupported)
Which I think after reading in some .h files
is because it uses winsock 1.1.
As I found ws2tcpip.h I try to include that via
#ifdef __WIN32__
#include <w32api/ws2tcpip.h>
#endif
either before or after the above #include lines.
But I get a lot of "conflicting types for xxx"
in netdb.h, sys/socket.h, asm/byteorder.h, and even
cygwin/in.h:25: parse error before '0'
Any help how to use the definitions from ws2tcpip.h?
Thank you!
Regards
Phil
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