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Add comments to connection_check_event().
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@ -567,14 +567,24 @@ connection_is_reading(connection_t *conn)
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(conn->read_event && event_pending(conn->read_event, EV_READ, NULL));
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}
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/** Check whether <b>conn</b> is correct in having (or not having) a
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* read/write event (passed in <b>ev</b). On success, return 0. On failure,
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* log a warning and return -1. */
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static int
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connection_check_event(connection_t *conn, struct event *ev)
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{
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int bad;
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if (conn->type == CONN_TYPE_AP && TO_EDGE_CONN(conn)->is_dns_request) {
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/* DNS requests which we launch through the dnsserv.c module do not have
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* any underlying socket or any underlying linked connection, so they
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* shouldn't have any attached events either.
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*/
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bad = ev != NULL;
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} else {
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/* Everytyhing else should have an underlying socket, or a linked
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* connection (which is also tracked with a read_event/write_event pair).
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*/
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bad = ev == NULL;
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}
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