1 #ifndef HEADER_CURL_CONNCACHE_H
2 #define HEADER_CURL_CONNCACHE_H
3 /***************************************************************************
5 * Project ___| | | | _ \| |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
10 * Copyright (C) 2015 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
11 * Copyright (C) 2012 - 2014, Linus Nielsen Feltzing, <linus@haxx.se>
13 * This software is licensed as described in the file COPYING, which
14 * you should have received as part of this distribution. The terms
15 * are also available at https://curl.haxx.se/docs/copyright.html.
17 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
18 * copies of the Software, and permit persons to whom the Software is
19 * furnished to do so, under the terms of the COPYING file.
21 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
22 * KIND, either express or implied.
24 ***************************************************************************/
27 * All accesses to struct fields and changing of data in the connection cache
28 * and connectbundles must be done with the conncache LOCKED. The cache might
33 struct curl_hash hash;
35 long next_connection_id;
36 struct curltime last_cleanup;
37 /* handle used for closing cached connections */
38 struct Curl_easy *closure_handle;
41 #define BUNDLE_NO_MULTIUSE -1
42 #define BUNDLE_UNKNOWN 0 /* initial value */
43 #define BUNDLE_PIPELINING 1
44 #define BUNDLE_MULTIPLEX 2
46 struct connectbundle {
47 int multiuse; /* supports multi-use */
48 size_t num_connections; /* Number of connections in the bundle */
49 struct curl_llist conn_list; /* The connectdata members of the bundle */
52 /* returns 1 on error, 0 is fine */
53 int Curl_conncache_init(struct conncache *, int size);
54 void Curl_conncache_destroy(struct conncache *connc);
56 /* return the correct bundle, to a host or a proxy */
57 struct connectbundle *Curl_conncache_find_bundle(struct connectdata *conn,
58 struct conncache *connc);
59 void Curl_conncache_unlock(struct connectdata *conn);
60 /* returns number of connections currently held in the connection cache */
61 size_t Curl_conncache_size(struct Curl_easy *data);
62 size_t Curl_conncache_bundle_size(struct connectdata *conn);
64 bool Curl_conncache_return_conn(struct connectdata *conn);
65 CURLcode Curl_conncache_add_conn(struct conncache *connc,
66 struct connectdata *conn) WARN_UNUSED_RESULT;
67 void Curl_conncache_remove_conn(struct connectdata *conn,
69 bool Curl_conncache_foreach(struct Curl_easy *data,
70 struct conncache *connc,
72 int (*func)(struct connectdata *conn,
76 Curl_conncache_find_first_connection(struct conncache *connc);
79 Curl_conncache_extract_bundle(struct Curl_easy *data,
80 struct connectbundle *bundle);
82 Curl_conncache_extract_oldest(struct Curl_easy *data);
83 void Curl_conncache_close_all_connections(struct conncache *connc);
84 void Curl_conncache_print(struct conncache *connc);
86 #endif /* HEADER_CURL_CONNCACHE_H */