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wireaddr: tell caller that we failed due to wanting DNS lookup, don't try.

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This is useful for the next patch, where we want to hand the unresolved
name through to the proxy.

This also addresses @Saibato's worry that we still called getaddrinfo()
(with the AI_NUMERICHOST option) even if we didn't want a lookup.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
Rusty Russell
2018-05-10 12:25:15 +09:30
parent 5345e43354
commit a1dc4eef56
4 changed files with 36 additions and 18 deletions
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9
common/wireaddr.h
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@@ -75,14 +75,19 @@ enum addr_listen_announce fromwire_addr_listen_announce(const u8 **cursor,
size_t *max);
void towire_addr_listen_announce(u8 **pptr, enum addr_listen_announce ala);
/* If no_dns is non-NULL, we will set it to true and return false if
* we wanted to do a DNS lookup. */
bool parse_wireaddr(const char *arg, struct wireaddr *addr, u16 port,
bool dns_ok, const char **err_msg);
bool *no_dns, const char **err_msg);
char *fmt_wireaddr(const tal_t *ctx, const struct wireaddr *a);
char *fmt_wireaddr_without_port(const tal_t *ctx, const struct wireaddr *a);
/* If no_dns is non-NULL, we will set it to true and return false if
* we wanted to do a DNS lookup. */
bool wireaddr_from_hostname(struct wireaddr *addr, const char *hostname,
const u16 port, bool dns_ok, const char **err_msg);
const u16 port, bool *no_dns,
const char **err_msg);
void wireaddr_from_ipv4(struct wireaddr *addr,
const struct in_addr *ip4,