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enable keepalive when the keepalive EDNS option is seen

Browse Source 
previously, receiving a keepalive option had no effect on how
long named would keep the connection open; there was a place to
configure the keepalive timeout but it was never used. this commit
corrects that.

this also fixes an error in isc__nm_{tcp,tls}dns_keepalive()
in which the sense of a REQUIRE test was reversed; previously this
error had not been noticed because the functions were not being
used.
This commit is contained in:
Evan Hunt
2020-11-02 18:33:20 -08:00
parent 19e24e22f5
commit 7867b8b57d
5 changed files with 31 additions and 2 deletions
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16
lib/isc/netmgr/netmgr.c
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@@ -2365,6 +2365,22 @@ isc_nmhandle_settimeout(isc_nmhandle_t *handle, uint32_t timeout) {
}
}
void
isc_nmhandle_keepalive(isc_nmhandle_t *handle, bool value) {
REQUIRE(VALID_NMHANDLE(handle));
switch (handle->sock->type) {
case isc_nm_tcpdnssocket:
isc__nm_tcpdns_keepalive(handle, value);
break;
case isc_nm_tlsdnssocket:
isc__nm_tlsdns_keepalive(handle, value);
break;
default:
return;
}
}
void *
isc_nmhandle_getextra(isc_nmhandle_t *handle) {
REQUIRE(VALID_NMHANDLE(handle));