2 * AUTHOR: Robert Collins
4 * SQUID Web Proxy Cache http://www.squid-cache.org/
5 * ----------------------------------------------------------
7 * Squid is the result of efforts by numerous individuals from
8 * the Internet community; see the CONTRIBUTORS file for full
9 * details. Many organizations have provided support for Squid's
10 * development; see the SPONSORS file for full details. Squid is
11 * Copyrighted (C) 2001 by the Regents of the University of
12 * California; see the COPYRIGHT file for full details. Squid
13 * incorporates software developed and/or copyrighted by other
14 * sources; see the CREDITS file for full details.
16 * This program is free software; you can redistribute it and/or modify
17 * it under the terms of the GNU General Public License as published by
18 * the Free Software Foundation; either version 2 of the License, or
19 * (at your option) any later version.
21 * This program is distributed in the hope that it will be useful,
22 * but WITHOUT ANY WARRANTY; without even the implied warranty of
23 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
24 * GNU General Public License for more details.
26 * You should have received a copy of the GNU General Public License
27 * along with this program; if not, write to the Free Software
28 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111, USA.
30 * Copyright (c) 2003, Robert Collins <robertc@squid-cache.org>
33 #ifndef SQUID_PEERSELECTSTATE_H
34 #define SQUID_PEERSELECTSTATE_H
36 #include "acl/Checklist.h"
39 #include "comm/forward.h"
40 #include "hier_code.h"
42 #include "ip/Address.h"
48 typedef void PSC(Comm::ConnectionList
*, ErrorState
*, void *);
50 SQUIDCEXTERN
void peerSelect(Comm::ConnectionList
*, HttpRequest
*, StoreEntry
*, PSC
*, void *data
);
51 SQUIDCEXTERN
void peerSelectInit(void);
54 * A CachePeer which has been selected as a possible destination.
55 * Listed as pointers here so as to prevent duplicates being added but will
56 * be converted to a set of IP address path options before handing back out
59 * Certain connection flags and outgoing settings will also be looked up and
60 * set based on the received request and CachePeer settings before handing back.
65 CachePeer
*_peer
; /* NULL --> origin server */
74 void *operator new(size_t);
78 allow_t always_direct
;
80 int direct
; // TODO: fold always_direct/never_direct/prefer_direct into this now that ACL can do a multi-state result.
83 ErrorState
*lastError
;
85 Comm::ConnectionList
*paths
; ///< the callers paths array. to be filled with our final results.
86 FwdServer
*servers
; ///< temporary linked list of peers we will pass back.
89 * Why are these Ip::Address instead of CachePeer *? Because a
90 * CachePeer structure can become invalid during the CachePeer selection
91 * phase, specifically after a reconfigure. Thus we need to lookup
92 * the CachePeer * based on the address when we are finally ready to
93 * reference the CachePeer structure.
96 Ip::Address first_parent_miss
;
98 Ip::Address closest_parent_miss
;
100 * ->hit can be CachePeer* because it should only be
101 * accessed during the thread when it is set
106 ACLChecklist
*acl_checklist
;
108 CBDATA_CLASS(ps_state
);
111 #endif /* SQUID_PEERSELECTSTATE_H */