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relay: Send back CONNECTION_REFUSED on reentry

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The TORPROTOCOL reason causes the client to close the circuit which is not
what we want because other valid streams might be on it.

Instead, CONNECTION_REFUSED will leave it open but will not allow more streams
to be attached to it. The client then open a new circuit to the destination.

Closes #40270

Signed-off-by: David Goulet <dgoulet@torproject.org>
This commit is contained in:
David Goulet 2021-02-01 12:45:32 -05:00
parent 838e07be9d
commit 387d1d8835
1 changed files with 1 additions and 1 deletions
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2
src/core/or/connection_edge.c
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@ -4293,7 +4293,7 @@ connection_exit_connect(edge_connection_t *edge_conn)
nodelist_reentry_probably_contains(&conn->addr, conn->port)) {
log_info(LD_EXIT, "%s tried to connect back to a known relay address. "
"Closing.", connection_describe(conn));
connection_edge_end(edge_conn, END_STREAM_REASON_TORPROTOCOL);
connection_edge_end(edge_conn, END_STREAM_REASON_CONNECTREFUSED);
circuit_detach_stream(circuit_get_by_edge_conn(edge_conn), edge_conn);
connection_free(conn);
return;