On Linux, socket() and sceNetSocket() create AF_INET6 sockets in the
host's default dual-stack mode (net.ipv6.bindv6only is 0), so a wildcard
IPv6 bind also claims the IPv4 port. A title that keeps an IPv4 and an
IPv6 socket on the same port fails: with 0.0.0.0:P bound, binding [::]:P
returns EADDRINUSE (48), and an IPv6 socket bound to [::] also receives
IPv4 traffic from v4-mapped peers.
FreeBSD makes every new IPv6 socket IPv6-only. sys/netinet6/in6_proto.c:
VNET_DEFINE(int, ip6_v6only) = 1;
sys/netinet/in_pcb.c, in_pcballoc():
if (INP_SOCKAF(so) == AF_INET6) {
inp->inp_vflag |= INP_IPV6PROTO;
if (V_ip6_v6only)
inp->inp_flags |= IN6P_IPV6_V6ONLY;
}
and sys/netinet6/in6_pcb.c, in6_pcbbind(), looks for an IPv4 owner of
the port only when the flag is clear:
if ((inp->inp_flags & IN6P_IPV6_V6ONLY) == 0 &&
IN6_IS_ADDR_UNSPECIFIED(&sin6->sin6_addr)) {
socket() and sceNetSocket() now set IPV6_V6ONLY on every IPv6 socket
they create. Windows already defaults to it.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
FreeBSD's soreceive leaves the sender unset for a stream socket, so recvfrom
returns an address length of 0 (kern_recvit). The guest call formatted the empty
host address as a 28-byte AF_INET6 sockaddr and reported length 28. Report
length 0 when the host returns no AF_INET or AF_INET6 sender, as recvmsg does.
Winsock fails send, sendto and sendmsg on a socket shut down for writing
with WSAESHUTDOWN, which neither Windows error map handled, so libkernel
and libSceNet reported EIO. FreeBSD reports EPIPE there, and the Linux
maps already translate the host's EPIPE to 32. Map WSAESHUTDOWN to 32
in both.
send, sendto and sendmsg rejected every flag with EOPNOTSUPP, so callers
that pass FreeBSD's MSG_NOSIGNAL (0x20000) could not send at all. Accept
it: Windows sockets never raise SIGPIPE, and on Linux it maps to the
native MSG_NOSIGNAL. Other flags still fail with EOPNOTSUPP.
DOOM (PPSA99666) sends its upload server replies with MSG_NOSIGNAL and
closed every connection without an answer.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
The Linux branch of NativeError lacked five codes the Windows branch
already translates, so they fell through to EIO. bind on a bound socket
and accept on a socket that is not listening set errno to 5 on Linux
and to 22 on Windows.
Assisted-by: Claude Opus 5.5
- Enhanced the network control library to check for host addresses and update connection states accordingly.
- Added support for socket operations including connect, listen, accept, send, and recv in the UDP and TCP socket implementations.
- Introduced error handling for various socket operations, ensuring proper feedback for unsupported actions.
- Created comprehensive tests for both TCP and UDP socket functionalities, validating the expected behavior of the network stack.
- Refactored existing code to improve clarity and maintainability, including the removal of unused functions and the addition of necessary error checks.
Dean
milescoviello
Aarav
Hussein Kadhim
Zurisen
Adrià Franch
Scott Schuster
Jakub Krasuski
Praetorian0420