neighbors.h

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/*
 * Copyright (C) 1996-2025 The Squid Software Foundation and contributors
 *
 * Squid software is distributed under GPLv2+ license and includes
 * contributions from numerous individuals and organizations.
 * Please see the COPYING and CONTRIBUTORS files for details.
 */
 
/* DEBUG: section 15    Neighbor Routines */
 
#ifndef SQUID_SRC_NEIGHBORS_H
#define SQUID_SRC_NEIGHBORS_H
 
#include "anyp/forward.h"
#include "enums.h"
#include "ICP.h"
#include "lookup_t.h"
#include "typedefs.h" //for IRCB
 
class HttpRequest;
class HttpRequestMethod;
class CachePeer;
class StoreEntry;
class PeerSelector;
 
CachePeer *getFirstUpParent(PeerSelector *);
CachePeer *getSingleParent(PeerSelector *);
int neighborsCount(PeerSelector *);
int neighborsUdpPing(HttpRequest *,
                     StoreEntry *,
                     IRCB * callback,
                     PeerSelector *ps,
                     int *exprep,
                     int *timeout);
void neighborAddAcl(const char *, const char *);
 
void neighborsUdpAck(const cache_key *, icp_common_t *, const Ip::Address &);
void neighborAdd(const char *, const char *, int, int, int, int, int);
void neighbors_init(void);
#if USE_HTCP
void neighborsHtcpClear(StoreEntry *, HttpRequest *, const HttpRequestMethod &, htcp_clr_reason);
#endif
 
CachePeer *findCachePeerByName(const char *);
 
CachePeer *getDefaultParent(PeerSelector*);
CachePeer *getRoundRobinParent(PeerSelector*);
CachePeer *getWeightedRoundRobinParent(PeerSelector*);
void peerClearRRStart(void);
void peerClearRR(void);
 
// TODO: Move, together with its many dependencies and callers, into CachePeer.
void peerAlive(CachePeer *);
 
lookup_t peerDigestLookup(CachePeer * p, PeerSelector *);
CachePeer *neighborsDigestSelect(PeerSelector *);
void peerNoteDigestLookup(HttpRequest * request, CachePeer * p, lookup_t lookup);
int neighborUp(const CachePeer * e);
const char *neighborTypeStr(const CachePeer * e);
peer_t neighborType(const CachePeer *, const AnyP::Uri &);
void dump_peer_options(StoreEntry *, CachePeer *);
int peerHTTPOkay(const CachePeer *, PeerSelector *);
 
time_t positiveTimeout(const time_t timeout);
 
bool peerCanOpenMore(const CachePeer *p);
bool peerHasConnAvailable(const CachePeer *p);
void peerConnClosed(CachePeer *p);
 
CachePeer *whichPeer(const Ip::Address &from);
 
#endif /* SQUID_SRC_NEIGHBORS_H */