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Add FreeBSD support for IP_RECVDSTADDR and IP_SENDSRCADDR

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This commit adds compatibility for FreeBSD by using IP_RECVDSTADDR and IP_SENDSRCADDR in place of IP_PKTINFO for IPv4 socket operations. It ensures correct handling of source and destination addresses on FreeBSD systems where struct in_pktinfo is not available.
This commit is contained in:
ReenigneArcher
2025-11-08 13:23:21 -05:00
committed by Cameron Gutman
parent 115a10baa1
commit dea6fb5414
1 changed files with 32 additions and 1 deletions
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unix.c
+32 -1
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@@ -380,6 +380,12 @@ enet_socket_create (int af, ENetSocketType type)
int on = 1;
setsockopt(sock, IPPROTO_IP, IP_PKTINFO, (char *)&on, sizeof(on));
}
#elif defined(IP_RECVDSTADDR)
// FreeBSD uses IP_RECVDSTADDR instead of IP_PKTINFO when struct in_pktinfo is not available
{
int on = 1;
setsockopt(sock, IPPROTO_IP, IP_RECVDSTADDR, (char *)&on, sizeof(on));
}
#endif
#ifdef IPV6_RECVPKTINFO
@@ -633,6 +639,20 @@ enet_socket_send (ENetSocket socket,
chdr->cmsg_len = CMSG_LEN(sizeof(pktInfo));
memcpy(CMSG_DATA(chdr), &pktInfo, sizeof(pktInfo));
}
#elif defined(IP_SENDSRCADDR)
// FreeBSD uses IP_SENDSRCADDR with struct in_addr instead of IP_PKTINFO
if (localAddress->address.ss_family == AF_INET) {
struct in_addr srcAddr = ((struct sockaddr_in*)&localAddress->address)->sin_addr;
msgHdr.msg_control = controlBufData;
msgHdr.msg_controllen = CMSG_SPACE(sizeof(srcAddr));
struct cmsghdr *chdr = CMSG_FIRSTHDR(&msgHdr);
chdr->cmsg_level = IPPROTO_IP;
chdr->cmsg_type = IP_SENDSRCADDR;
chdr->cmsg_len = CMSG_LEN(sizeof(srcAddr));
memcpy(CMSG_DATA(chdr), &srcAddr, sizeof(srcAddr));
}
#endif
#ifdef IPV6_PKTINFO
if (localAddress->address.ss_family == AF_INET6) {
@@ -751,6 +771,17 @@ enet_socket_receive (ENetSocket socket,
localAddr->sin_family = AF_INET;
localAddr->sin_addr = ((struct in_pktinfo*)CMSG_DATA(chdr))->ipi_addr;
localAddress->addressLength = sizeof(*localAddr);
break;
}
#elif defined(IP_RECVDSTADDR)
// FreeBSD uses IP_RECVDSTADDR with struct in_addr instead of IP_PKTINFO
if (chdr->cmsg_level == IPPROTO_IP && chdr->cmsg_type == IP_RECVDSTADDR) {
struct sockaddr_in *localAddr = (struct sockaddr_in*)&localAddress->address;
localAddr->sin_family = AF_INET;
localAddr->sin_addr = *((struct in_addr*)CMSG_DATA(chdr));
localAddress->addressLength = sizeof(*localAddr);
break;
}
@@ -897,4 +928,4 @@ enet_socket_wait (ENetSocket socket, enet_uint32 * condition, enet_uint32 timeou
#endif
}
#endif
#endif