1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 2012, Linus Nielsen Feltzing, <linus@haxx.se>
9 * Copyright (C) 2012 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
11 * This software is licensed as described in the file COPYING, which
12 * you should have received as part of this distribution. The terms
13 * are also available at http://curl.haxx.se/docs/copyright.html.
15 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
16 * copies of the Software, and permit persons to whom the Software is
17 * furnished to do so, under the terms of the COPYING file.
19 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
20 * KIND, either express or implied.
22 ***************************************************************************/
24 #include "curl_setup.h"
26 #include <curl/curl.h>
35 #include "conncache.h"
37 #include "curl_memory.h"
38 /* The last #include file should be: */
41 static void free_bundle_hash_entry(void *freethis)
43 struct connectbundle *b = (struct connectbundle *) freethis;
45 Curl_bundle_destroy(b);
48 struct conncache *Curl_conncache_init(int size)
50 struct conncache *connc;
52 connc = calloc(1, sizeof(struct conncache));
56 connc->hash = Curl_hash_alloc(size, Curl_hash_str,
57 Curl_str_key_compare, free_bundle_hash_entry);
67 void Curl_conncache_destroy(struct conncache *connc)
70 Curl_hash_destroy(connc->hash);
76 struct connectbundle *Curl_conncache_find_bundle(struct conncache *connc,
79 struct connectbundle *bundle = NULL;
82 bundle = Curl_hash_pick(connc->hash, hostname, strlen(hostname)+1);
87 static bool conncache_add_bundle(struct conncache *connc,
89 struct connectbundle *bundle)
93 p = Curl_hash_add(connc->hash, hostname, strlen(hostname)+1, bundle);
98 static void conncache_remove_bundle(struct conncache *connc,
99 struct connectbundle *bundle)
101 struct curl_hash_iterator iter;
102 struct curl_hash_element *he;
107 Curl_hash_start_iterate(connc->hash, &iter);
109 he = Curl_hash_next_element(&iter);
111 if(he->ptr == bundle) {
112 /* The bundle is destroyed by the hash destructor function,
113 free_bundle_hash_entry() */
114 Curl_hash_delete(connc->hash, he->key, he->key_len);
118 he = Curl_hash_next_element(&iter);
122 CURLcode Curl_conncache_add_conn(struct conncache *connc,
123 struct connectdata *conn)
126 struct connectbundle *bundle;
127 struct connectbundle *new_bundle = NULL;
128 struct SessionHandle *data = conn->data;
130 bundle = Curl_conncache_find_bundle(data->state.conn_cache,
133 result = Curl_bundle_create(data, &new_bundle);
134 if(result != CURLE_OK)
137 if(!conncache_add_bundle(data->state.conn_cache,
138 conn->host.name, new_bundle)) {
139 Curl_bundle_destroy(new_bundle);
140 return CURLE_OUT_OF_MEMORY;
145 result = Curl_bundle_add_conn(bundle, conn);
146 if(result != CURLE_OK) {
148 conncache_remove_bundle(data->state.conn_cache, new_bundle);
152 connc->num_connections++;
157 void Curl_conncache_remove_conn(struct conncache *connc,
158 struct connectdata *conn)
160 struct connectbundle *bundle = conn->bundle;
162 /* The bundle pointer can be NULL, since this function can be called
163 due to a failed connection attempt, before being added to a bundle */
165 Curl_bundle_remove_conn(bundle, conn);
166 if(bundle->num_connections == 0) {
167 conncache_remove_bundle(connc, bundle);
169 connc->num_connections--;
171 DEBUGF(infof(conn->data, "The cache now contains %d members\n",
172 connc->num_connections));
176 /* This function iterates the entire connection cache and calls the
177 function func() with the connection pointer as the first argument
178 and the supplied 'param' argument as the other,
180 Return 0 from func() to continue the loop, return 1 to abort it.
182 void Curl_conncache_foreach(struct conncache *connc,
184 int (*func)(struct connectdata *conn, void *param))
186 struct curl_hash_iterator iter;
187 struct curl_llist_element *curr;
188 struct curl_hash_element *he;
193 Curl_hash_start_iterate(connc->hash, &iter);
195 he = Curl_hash_next_element(&iter);
197 struct connectbundle *bundle;
198 struct connectdata *conn;
202 curr = bundle->conn_list->head;
204 /* Yes, we need to update curr before calling func(), because func()
205 might decide to remove the connection */
209 if(1 == func(conn, param))
213 he = Curl_hash_next_element(&iter);
217 /* Return the first connection found in the cache. Used when closing all
220 Curl_conncache_find_first_connection(struct conncache *connc)
222 struct curl_hash_iterator iter;
223 struct curl_llist_element *curr;
224 struct curl_hash_element *he;
225 struct connectbundle *bundle;
227 Curl_hash_start_iterate(connc->hash, &iter);
229 he = Curl_hash_next_element(&iter);
233 curr = bundle->conn_list->head;
238 he = Curl_hash_next_element(&iter);
246 /* Useful for debugging the connection cache */
247 void Curl_conncache_print(struct conncache *connc)
249 struct curl_hash_iterator iter;
250 struct curl_llist_element *curr;
251 struct curl_hash_element *he;
256 fprintf(stderr, "=Bundle cache=\n");
258 Curl_hash_start_iterate(connc->hash, &iter);
260 he = Curl_hash_next_element(&iter);
262 struct connectbundle *bundle;
263 struct connectdata *conn;
267 fprintf(stderr, "%s -", he->key);
268 curr = bundle->conn_list->head;
272 fprintf(stderr, " [%p %d]", (void *)conn, conn->inuse);
275 fprintf(stderr, "\n");
277 he = Curl_hash_next_element(&iter);