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setsockopt: always check its return value

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Signed-off-by: Nikos Mavrogiannopoulos <n.mavrogiannopoulos@gmail.com>
This commit is contained in:
Nikos Mavrogiannopoulos
2020-06-28 08:00:20 +02:00
parent cc8d4a90a8
commit 99fd5410bf
1 changed files with 11 additions and 5 deletions
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16
src/main.c
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@@ -200,8 +200,10 @@ int _listen_ports(void *pool, struct perm_cfg_st* config,
y = 1;
/* avoid listen on ipv6 addresses failing
* because already listening on ipv4 addresses: */
setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
(const void *) &y, sizeof(y));
if (setsockopt(s, IPPROTO_IPV6, IPV6_V6ONLY,
(const void *) &y, sizeof(y)) < 0) {
perror("setsockopt(IPV6_V6ONLY) failed");
}
}
#endif
@@ -468,13 +470,17 @@ int y;
y = 1;
/* avoid listen on ipv6 addresses failing
* because already listening on ipv4 addresses: */
setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY,
(const void *) &y, sizeof(y));
if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY,
(const void *) &y, sizeof(y)) < 0) {
perror("setsockopt(IPV6_V6ONLY) failed");
}
}
#endif
y = 1;
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const void *) &y, sizeof(y));
if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, (const void *) &y, sizeof(y)) < 0) {
perror("setsockopt(SO_REUSEADDR) failed");
}
if (GETCONFIG(s)->try_mtu) {
set_mtu_disc(fd, family, 1);