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78 lines
3.0 KiB
C
78 lines
3.0 KiB
C
/* 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) 2007-2017, The Tor Project, Inc. */
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/* See LICENSE for licensing information */
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#ifndef EDGE_CONNECTION_ST_H
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#define EDGE_CONNECTION_ST_H
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#include "or.h"
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#include "connection_st.h"
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/** Subtype of connection_t for an "edge connection" -- that is, an entry (ap)
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* connection, or an exit. */
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struct edge_connection_t {
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connection_t base_;
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struct edge_connection_t *next_stream; /**< Points to the next stream at this
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* edge, if any */
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int package_window; /**< How many more relay cells can I send into the
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* circuit? */
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int deliver_window; /**< How many more relay cells can end at me? */
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struct circuit_t *on_circuit; /**< The circuit (if any) that this edge
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* connection is using. */
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/** A pointer to which node in the circ this conn exits at. Set for AP
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* connections and for hidden service exit connections. */
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struct crypt_path_t *cpath_layer;
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/** What rendezvous service are we querying for (if an AP) or providing (if
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* an exit)? */
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rend_data_t *rend_data;
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/* Hidden service connection identifier for edge connections. Used by the HS
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* client-side code to identify client SOCKS connections and by the
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* service-side code to match HS circuits with their streams. */
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struct hs_ident_edge_conn_t *hs_ident;
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uint32_t address_ttl; /**< TTL for address-to-addr mapping on exit
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* connection. Exit connections only. */
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uint32_t begincell_flags; /** Flags sent or received in the BEGIN cell
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* for this connection */
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streamid_t stream_id; /**< The stream ID used for this edge connection on its
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* circuit */
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/** The reason why this connection is closing; passed to the controller. */
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uint16_t end_reason;
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/** Bytes read since last call to control_event_stream_bandwidth_used() */
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uint32_t n_read;
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/** Bytes written since last call to control_event_stream_bandwidth_used() */
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uint32_t n_written;
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/** True iff this connection is for a DNS request only. */
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unsigned int is_dns_request:1;
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/** True iff this connection is for a PTR DNS request. (exit only) */
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unsigned int is_reverse_dns_lookup:1;
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unsigned int edge_has_sent_end:1; /**< For debugging; only used on edge
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* connections. Set once we've set the stream end,
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* and check in connection_about_to_close_connection().
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*/
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/** True iff we've blocked reading until the circuit has fewer queued
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* cells. */
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unsigned int edge_blocked_on_circ:1;
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/** Unique ID for directory requests; this used to be in connection_t, but
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* that's going away and being used on channels instead. We still tag
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* edge connections with dirreq_id from circuits, so it's copied here. */
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uint64_t dirreq_id;
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};
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#endif
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