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resolved: add small helper to pick DNS port number

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This shouldn't be hidden in some function argument expression. Let's
make this more explicit by turning this into its own helper function.
This commit is contained in:
Lennart Poettering 2018-12-04 20:41:06 +01:00
parent 747a8a74c0
commit ec962fba62
1 changed files with 5 additions and 1 deletions
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6
src/resolve/resolved-dns-transaction.c
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@ -553,6 +553,10 @@ static int on_stream_packet(DnsStream *s) {
return 0;
}
static uint16_t dns_port_for_feature_level(DnsServerFeatureLevel level) {
return DNS_SERVER_FEATURE_LEVEL_IS_TLS(level) ? 853 : 53;
}
static int dns_transaction_emit_tcp(DnsTransaction *t) {
_cleanup_close_ int fd = -1;
_cleanup_(dns_stream_unrefp) DnsStream *s = NULL;
@ -580,7 +584,7 @@ static int dns_transaction_emit_tcp(DnsTransaction *t) {
if (t->server->stream && (DNS_SERVER_FEATURE_LEVEL_IS_TLS(t->current_feature_level) == t->server->stream->encrypted))
s = dns_stream_ref(t->server->stream);
else
fd = dns_scope_socket_tcp(t->scope, AF_UNSPEC, NULL, t->server, DNS_SERVER_FEATURE_LEVEL_IS_TLS(t->current_feature_level) ? 853 : 53, &sa);
fd = dns_scope_socket_tcp(t->scope, AF_UNSPEC, NULL, t->server, dns_port_for_feature_level(t->current_feature_level), &sa);
break;