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+/* Copyright (c) 2001 Matej Pfajfar.
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+ * Copyright (c) 2001-2004, Roger Dingledine.
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+ * Copyright (c) 2004-2006, Roger Dingledine, Nick Mathewson.
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+ * Copyright (c) 2007-2010, The Tor Project, Inc. */
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+/* See LICENSE for licensing information */
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+
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+/**
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+ * \file relay.h
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+ * \brief Header file for relay.c.
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+ **/
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+
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+#ifndef _TOR_RELAY_H
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+#define _TOR_RELAY_H
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+
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+extern uint64_t stats_n_relay_cells_relayed;
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+extern uint64_t stats_n_relay_cells_delivered;
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+
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+int circuit_receive_relay_cell(cell_t *cell, circuit_t *circ,
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+ cell_direction_t cell_direction);
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+
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+void relay_header_pack(char *dest, const relay_header_t *src);
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+void relay_header_unpack(relay_header_t *dest, const char *src);
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+int relay_send_command_from_edge(streamid_t stream_id, circuit_t *circ,
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+ uint8_t relay_command, const char *payload,
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+ size_t payload_len, crypt_path_t *cpath_layer);
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+int connection_edge_send_command(edge_connection_t *fromconn,
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+ uint8_t relay_command, const char *payload,
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+ size_t payload_len);
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+int connection_edge_package_raw_inbuf(edge_connection_t *conn,
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+ int package_partial);
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+void connection_edge_consider_sending_sendme(edge_connection_t *conn);
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+
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+extern uint64_t stats_n_data_cells_packaged;
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+extern uint64_t stats_n_data_bytes_packaged;
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+extern uint64_t stats_n_data_cells_received;
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+extern uint64_t stats_n_data_bytes_received;
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+
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+void init_cell_pool(void);
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+void free_cell_pool(void);
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+void clean_cell_pool(void);
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+void dump_cell_pool_usage(int severity);
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+
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+void cell_queue_clear(cell_queue_t *queue);
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+void cell_queue_append(cell_queue_t *queue, packed_cell_t *cell);
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+void cell_queue_append_packed_copy(cell_queue_t *queue, const cell_t *cell);
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+
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+void append_cell_to_circuit_queue(circuit_t *circ, or_connection_t *orconn,
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+ cell_t *cell, cell_direction_t direction);
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+void connection_or_unlink_all_active_circs(or_connection_t *conn);
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+int connection_or_flush_from_first_active_circuit(or_connection_t *conn,
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+ int max, time_t now);
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+void assert_active_circuits_ok(or_connection_t *orconn);
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+void make_circuit_inactive_on_conn(circuit_t *circ, or_connection_t *conn);
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+void make_circuit_active_on_conn(circuit_t *circ, or_connection_t *conn);
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+
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+int append_address_to_payload(char *payload_out, const tor_addr_t *addr);
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+const char *decode_address_from_payload(tor_addr_t *addr_out,
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+ const char *payload,
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+ int payload_len);
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+unsigned cell_ewma_get_tick(void);
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+void cell_ewma_set_scale_factor(or_options_t *options,
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+ networkstatus_t *consensus);
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+
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+#endif
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+
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