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5d41d476f3
In order to ease dual-stack deployments, we could at least try to check if ipv6 seems to be reachable. For this we're adding a test based on a UDP connect (no traffic) on port 53 to the base of public addresses (2001::) and see if the connect() is permitted, indicating that the routing table knows how to reach it, or fails. Based on this result we're setting a global variable that other subsystems might use to preset their defaults.
59 lines
2.0 KiB
C
59 lines
2.0 KiB
C
/*
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* include/haproxy/sock_inet.h
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* This file contains declarations for AF_INET & AF_INET6 sockets.
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*
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* Copyright (C) 2000-2020 Willy Tarreau - w@1wt.eu
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _HAPROXY_SOCK_INET_H
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#define _HAPROXY_SOCK_INET_H
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#include <sys/socket.h>
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#include <sys/types.h>
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#include <haproxy/api.h>
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extern int sock_inet6_v6only_default;
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extern int sock_inet_tcp_maxseg_default;
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extern int sock_inet6_tcp_maxseg_default;
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extern int sock_inet6_seems_reachable;
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#ifdef HA_HAVE_MPTCP
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extern int sock_inet_mptcp_maxseg_default;
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extern int sock_inet6_mptcp_maxseg_default;
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#else
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#define sock_inet_mptcp_maxseg_default -1
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#define sock_inet6_mptcp_maxseg_default -1
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#endif
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extern struct proto_fam proto_fam_inet4;
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extern struct proto_fam proto_fam_inet6;
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/* external types */
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struct receiver;
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int sock_inet4_addrcmp(const struct sockaddr_storage *a, const struct sockaddr_storage *b);
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int sock_inet6_addrcmp(const struct sockaddr_storage *a, const struct sockaddr_storage *b);
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void sock_inet_set_port(struct sockaddr_storage *addr, int port);
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int sock_inet_get_dst(int fd, struct sockaddr *sa, socklen_t salen, int dir);
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int sock_inet_is_foreign(int fd, sa_family_t family);
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int sock_inet4_make_foreign(int fd);
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int sock_inet6_make_foreign(int fd);
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int sock_inet_bind_receiver(struct receiver *rx, char **errmsg);
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#endif /* _HAPROXY_SOCK_INET_H */
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