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Bug 26259: Don't count 0-length RELAY_COMMAND_DATA in CIRC_BW OVERHEAD

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This cell should be treated as invalid for purposes of CIRC_BW.
This commit is contained in:
Mike Perry 2018-06-01 00:23:08 +00:00
parent d7bbfd0f62
commit 93ee227e18
2 changed files with 8 additions and 1 deletions
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2
src/or/relay.c
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@ -1556,7 +1556,7 @@ connection_edge_process_relay_cell(cell_t *cell, circuit_t *circ,
return -END_CIRC_REASON_TORPROTOCOL;
}
/* Total all valid application bytes delivered */
if (CIRCUIT_IS_ORIGIN(circ)) {
if (CIRCUIT_IS_ORIGIN(circ) && rh.length > 0) {
circuit_read_valid_data(TO_ORIGIN_CIRCUIT(circ), rh.length);
}

7
src/test/test_relaycell.c
View File

@ -233,6 +233,13 @@ test_circbw_relay(void *arg)
circ->cpath);
ASSERT_COUNTED_BW();
/* Empty Data cell on open connection: not counted */
ENTRY_TO_CONN(entryconn)->marked_for_close = 0;
PACK_CELL(1, RELAY_COMMAND_DATA, "");
connection_edge_process_relay_cell(&cell, TO_CIRCUIT(circ), edgeconn,
circ->cpath);
ASSERT_UNCOUNTED_BW();
/* Sendme on stream: not counted */
ENTRY_TO_CONN(entryconn)->outbuf_flushlen = 0;
PACK_CELL(1, RELAY_COMMAND_SENDME, "Data1234");