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trinity-1686a 2023-10-18 18:23:02 +02:00 committed by David Goulet
parent 0cf4966acf
commit eca9973e9e
1 changed files with 4 additions and 17 deletions
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21
src/core/or/connection_edge.c
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@ -4150,9 +4150,8 @@ connection_exit_begin_conn(cell_t *cell, circuit_t *circ)
log_debug(LD_EXIT,"about to start the dns_resolve().");
/* TODO should this be moved higher to protect from a stream DoS on directory
* requests, and possibly against an onion service? (for OS, more changes
* would be required) */
// in the future we may want to have a similar defense for BEGIN_DIR and
// BEGIN sent to OS.
dos_defense_type = dos_stream_new_begin_or_resolve_cell(or_circ);
switch (dos_defense_type) {
case DOS_STREAM_DEFENSE_NONE:
@ -4166,17 +4165,7 @@ connection_exit_begin_conn(cell_t *cell, circuit_t *circ)
return 0;
case DOS_STREAM_DEFENSE_CLOSE_CIRCUIT:
connection_free_(TO_CONN(n_stream));
/* TODO we could return REASON_NONE or REASON_RESOURCELIMIT. When closing
* circuits, you either get:
* - END_CIRC_REASON_NONE: tons of notice level "We tried for 15
* seconds to connect to 'target' using exit X. Retrying on a new
* circuit."
* - END_CIRC_REASON_RESOURCELIMIT: warn level "Guard X is failing
* to carry an extremely large amount of streams on its circuits"
*
* I'm not sure which one we want
*/
return -END_CIRC_REASON_NONE;
return -END_CIRC_REASON_RESOURCELIMIT;
}
/* send it off to the gethostbyname farm */
@ -4247,9 +4236,7 @@ connection_exit_begin_resolve(cell_t *cell, or_circuit_t *circ)
dns_send_resolved_error_cell(dummy_conn, RESOLVED_TYPE_ERROR_TRANSIENT);
return 0;
case DOS_STREAM_DEFENSE_CLOSE_CIRCUIT:
/* TODO maybe use REASON_RESOURCELIMIT?
* See connection_exit_begin_conn() */
return -END_CIRC_REASON_NONE;
return -END_CIRC_REASON_RESOURCELIMIT;
}
/* send it off to the gethostbyname farm */