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adjust timeout to allow for ECN negotiation failures

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This commit is contained in:
Mark Andrews 2018-12-28 15:16:04 +11:00 committed by Evan Hunt
parent f056d04eed
commit dadb924be7
1 changed files with 9 additions and 0 deletions
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9
lib/dns/resolver.c
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@ -1919,6 +1919,15 @@ fctx_query(fetchctx_t *fctx, dns_adbaddrinfo_t *addrinfo,
srtt = addrinfo->srtt;
/*
* Allow an additional second for the kernel to resend the SYN (or
* SYN without ECN in the case of stupid firewalls blocking ECN
* negotiation) over the current RTT estimate.
*/
if ((options & DNS_FETCHOPT_TCP) != 0) {
srtt += 1000000;
}
/*
* A forwarder needs to make multiple queries. Give it at least
* a second to do these in.