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39 lines
919 B
C
39 lines
919 B
C
#include <sys/types.h>
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#ifndef __MINGW32__
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#include <unistd.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#endif
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#include <errno.h>
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#include "haveip6.h"
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#include "socket.h"
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#include "ndelay.h"
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#include "windoze.h"
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#ifndef EAFNOSUPPORT
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#define EAFNOSUPPORT EINVAL
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#endif
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#ifndef EPFNOSUPPORT
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#define EPFNOSUPPORT EAFNOSUPPORT
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#endif
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#ifndef EPROTONOSUPPORT
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#define EPROTONOSUPPORT EAFNOSUPPORT
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#endif
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int socket_tcp6(void) {
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int s;
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#if defined(LIBC_HAS_IP6) && defined(SOCK_NONBLOCK)
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if ((s=socket(noipv6?PF_INET:PF_INET6,SOCK_STREAM|SOCK_NONBLOCK,IPPROTO_TCP))>-1 ||
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(errno!=EINVAL && errno!=EAFNOSUPPORT && errno!=EPFNOSUPPORT && errno!=EPROTONOSUPPORT)) {
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#ifdef IPV6_V6ONLY
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winsock2errno(setsockopt(s,IPPROTO_IPV6,IPV6_V6ONLY,(int[]){ 0 },sizeof(int)));
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#endif
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return s;
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}
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#endif
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s=socket_tcp6b();
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if (s==-1) return -1;
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if (ndelay_on(s) == -1) { close(s); return -1; }
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return s;
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}
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