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#include <sys/types.h>
#ifndef __MINGW32__
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#endif
#include "windoze.h"
#include <errno.h>
#include "haveip6.h"
#include "socket.h"
#include "ndelay.h"
#ifndef EAFNOSUPPORT
#define EAFNOSUPPORT EINVAL
#endif
#ifndef EPFNOSUPPORT
#define EPFNOSUPPORT EAFNOSUPPORT
#endif
#ifndef EPROTONOSUPPORT
#define EPROTONOSUPPORT EAFNOSUPPORT
#endif
int socket_tcp6b(void)
{
#ifdef LIBC_HAS_IP6
int s;
__winsock_init();
if (noipv6) goto compat;
s = winsock2errno(socket(PF_INET6,SOCK_STREAM,0));
if (s == -1) {
if (errno == EINVAL || errno == EAFNOSUPPORT || errno == EPFNOSUPPORT || errno == EPROTONOSUPPORT) {
compat:
s=winsock2errno(socket(AF_INET,SOCK_STREAM,0));
noipv6=1;
if (s==-1) return -1;
} else
return -1;
}
#ifdef IPV6_V6ONLY
{
int zero=0;
winsock2errno(setsockopt(s,IPPROTO_IPV6,IPV6_V6ONLY,(void*)&zero,sizeof(zero)));
}
#endif
return s;
#else
return socket_tcp4b();
#endif
}
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