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Built-in TCP/IP (re-)starts DNS connection on link up

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Sergio R. Caprile committed 2025-07-14 15:06:31 -03:00
1 parent 1494f5e831
commit 393063428e
6 files changed
+81 -31
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src/dns.c
+16 -10
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@@ -232,19 +232,24 @@ static bool mg_dns_send(struct mg_connection *c, const struct mg_str *name,
return mg_send(c, &pkt, sizeof(pkt.header) + n);
}
bool mg_dnsc_init(struct mg_mgr *mgr, struct mg_dns *dnsc);
bool mg_dnsc_init(struct mg_mgr *mgr, struct mg_dns *dnsc) {
if (dnsc->url == NULL) {
mg_error(0, "DNS server URL is NULL. Call mg_mgr_init()");
return false;
}
if (dnsc->c == NULL) {
dnsc->c = mg_connect(mgr, dnsc->url, NULL, NULL);
if (dnsc->c == NULL) return false;
dnsc->c->pfn = dns_cb;
}
return true;
}
static void mg_sendnsreq(struct mg_connection *c, struct mg_str *name, int ms,
struct mg_dns *dnsc, bool ipv6) {
struct dns_data *d = NULL;
if (dnsc->url == NULL) {
mg_error(c, "DNS server URL is NULL. Call mg_mgr_init()");
} else if (dnsc->c == NULL) {
dnsc->c = mg_connect(c->mgr, dnsc->url, NULL, NULL);
if (dnsc->c != NULL) {
dnsc->c->pfn = dns_cb;
// dnsc->c->is_hexdumping = 1;
}
}
if (dnsc->c == NULL) {
if (!mg_dnsc_init(c->mgr, dnsc)) {
mg_error(c, "resolver");
} else if ((d = (struct dns_data *) mg_calloc(1, sizeof(*d))) == NULL) {
mg_error(c, "resolve OOM");
@@ -345,3 +350,4 @@ struct mg_connection *mg_mdns_listen(struct mg_mgr *mgr, char *name) {
if (c != NULL) mg_multicast_add(c, (char *)"224.0.0.251");
return c;
}