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BUG/MINOR: resolvers: new callback to properly handle SRV record errors

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When a SRV record was created, it used to register the regular server name
resolution callbacks. That said, SRV records and regular server name
resolution don't work the same way, furthermore on error management.

This patch introduces a new call back to manage DNS errors related to
the SRV queries.

this fixes github issue #50.

Backport status: 2.3, 2.2, 2.1, 2.0
This commit is contained in:
Baptiste Assmann
2020-11-19 22:38:33 +01:00
committed by Christopher Faulet
parent a331a1e8eb
commit b4badf720c
3 changed files with 74 additions and 1 deletions
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include/haproxy/server.h
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@@ -61,6 +61,7 @@ struct server *new_server(struct proxy *proxy);
int snr_update_srv_status(struct server *s, int has_no_ip);
const char *update_server_fqdn(struct server *server, const char *fqdn, const char *updater, int dns_locked);
int snr_resolution_cb(struct resolv_requester *requester, struct dns_counters *counters);
int srvrq_resolution_error_cb(struct resolv_requester *requester, int error_code);
int snr_resolution_error_cb(struct resolv_requester *requester, int error_code);
struct server *snr_check_ip_callback(struct server *srv, void *ip, unsigned char *ip_family);
struct task *srv_cleanup_idle_connections(struct task *task, void *ctx, unsigned short state);