[tor-commits] [tor/maint-0.3.5] relay: Send back CONNECTION_REFUSED on reentry

[dgoulet@xxxxxxxxxxxxxx]

commit 59f1a41a7fdc03f5008e859e7e56e9c159b8a8d9
Author: David Goulet <dgoulet@xxxxxxxxxxxxxx>
Date:   Mon Feb 1 12:45:32 2021 -0500

    relay: Send back CONNECTION_REFUSED on reentry
    
    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@xxxxxxxxxxxxxx>
---
 src/core/or/connection_edge.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/core/or/connection_edge.c b/src/core/or/connection_edge.c
index b40fa3e567..895e73ac1b 100644
--- a/src/core/or/connection_edge.c
+++ b/src/core/or/connection_edge.c
@@ -4066,7 +4066,7 @@ connection_exit_connect(edge_connection_t *edge_conn)
     log_info(LD_EXIT, "%s:%d tried to connect back to a known relay address. "
                       "Closing.", escaped_safe_str_client(conn->address),
              conn->port);
-    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;



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