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kike: ensure NULL binds to both IPv4 and IPv6

This commit is contained in:
Přemysl Eric Janouch 2020-10-28 23:47:35 +01:00
parent 132e4a38b8
commit 06d3b3bd2b
Signed by: p
GPG Key ID: A0420B94F92B9493
1 changed files with 9 additions and 2 deletions
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11
kike.c
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@ -1,7 +1,7 @@
/*
* kike.c: the experimental IRC daemon
*
* Copyright (c) 2014 - 2018, Přemysl Eric Janouch <p@janouch.name>
* Copyright (c) 2014 - 2020, Přemysl Eric Janouch <p@janouch.name>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted.
@ -3801,6 +3801,14 @@ irc_listen (struct addrinfo *gai_iter)
soft_assert (setsockopt (fd, SOL_SOCKET, SO_REUSEADDR,
&yes, sizeof yes) != -1);
#if defined SOL_IPV6 && defined IPV6_V6ONLY
// Make NULL always bind to both IPv4 and IPv6, irrespectively of the order
// of results; only INADDR6_ANY seems to be affected by this
if (gai_iter->ai_family == AF_INET6)
soft_assert (setsockopt (fd, SOL_IPV6, IPV6_V6ONLY,
&yes, sizeof yes) != -1);
#endif
char host[NI_MAXHOST], port[NI_MAXSERV];
host[0] = port[0] = '\0';
int err = getnameinfo (gai_iter->ai_addr, gai_iter->ai_addrlen,
@ -3855,7 +3863,6 @@ irc_listen_resolve (struct server_context *ctx,
ctx->listen_fds[ctx->n_listen_fds++] = fd;
poller_fd_set (event, POLLIN);
break;
}
freeaddrinfo (gai_result);
}