From: Tom Gundersen Date: Mon, 3 Aug 2015 12:25:49 +0000 (+0200) Subject: resolved: transaction - increase number of retry attempts X-Git-Tag: v225~127^2 X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=3b31df8301fd7dfb78bf9eaf9227d40c9bf12182;p=thirdparty%2Fsystemd.git resolved: transaction - increase number of retry attempts With the exponential backoff, we can perform more requests in the same amount of time, so bump this a bit. In case of large RTT this may be necessary in order not to regress, and in case of large packet-loss it will make us more robust. The latter is particularly relevant once we start probing for features (and hence may see packet-loss until we settle on the right feature level). --- diff --git a/src/resolve/resolved-dns-transaction.h b/src/resolve/resolved-dns-transaction.h index 007f7e5959e..d8a56476091 100644 --- a/src/resolve/resolved-dns-transaction.h +++ b/src/resolve/resolved-dns-transaction.h @@ -100,7 +100,7 @@ DnsTransactionState dns_transaction_state_from_string(const char *s) _pure_; #define LLMNR_JITTER_INTERVAL_USEC (100 * USEC_PER_MSEC) /* Maximum attempts to send DNS requests, across all DNS servers */ -#define DNS_TRANSACTION_ATTEMPTS_MAX 8 +#define DNS_TRANSACTION_ATTEMPTS_MAX 16 /* Maximum attempts to send LLMNR requests, see RFC 4795 Section 2.7 */ #define LLMNR_TRANSACTION_ATTEMPTS_MAX 3