1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 2012, Linus Nielsen Feltzing, <linus@haxx.se>
9 * Copyright (C) 2012 - 2014, 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 conn->connection_id = connc->next_connection_id++;
153 connc->num_connections++;
158 void Curl_conncache_remove_conn(struct conncache *connc,
159 struct connectdata *conn)
161 struct connectbundle *bundle = conn->bundle;
163 /* The bundle pointer can be NULL, since this function can be called
164 due to a failed connection attempt, before being added to a bundle */
166 Curl_bundle_remove_conn(bundle, conn);
167 if(bundle->num_connections == 0) {
168 conncache_remove_bundle(connc, bundle);
172 connc->num_connections--;
174 DEBUGF(infof(conn->data, "The cache now contains %d members\n",
175 connc->num_connections));
180 /* This function iterates the entire connection cache and calls the
181 function func() with the connection pointer as the first argument
182 and the supplied 'param' argument as the other,
184 Return 0 from func() to continue the loop, return 1 to abort it.
186 void Curl_conncache_foreach(struct conncache *connc,
188 int (*func)(struct connectdata *conn, void *param))
190 struct curl_hash_iterator iter;
191 struct curl_llist_element *curr;
192 struct curl_hash_element *he;
197 Curl_hash_start_iterate(connc->hash, &iter);
199 he = Curl_hash_next_element(&iter);
201 struct connectbundle *bundle;
202 struct connectdata *conn;
206 curr = bundle->conn_list->head;
208 /* Yes, we need to update curr before calling func(), because func()
209 might decide to remove the connection */
213 if(1 == func(conn, param))
217 he = Curl_hash_next_element(&iter);
221 /* Return the first connection found in the cache. Used when closing all
224 Curl_conncache_find_first_connection(struct conncache *connc)
226 struct curl_hash_iterator iter;
227 struct curl_llist_element *curr;
228 struct curl_hash_element *he;
229 struct connectbundle *bundle;
231 Curl_hash_start_iterate(connc->hash, &iter);
233 he = Curl_hash_next_element(&iter);
237 curr = bundle->conn_list->head;
242 he = Curl_hash_next_element(&iter);
250 /* Useful for debugging the connection cache */
251 void Curl_conncache_print(struct conncache *connc)
253 struct curl_hash_iterator iter;
254 struct curl_llist_element *curr;
255 struct curl_hash_element *he;
260 fprintf(stderr, "=Bundle cache=\n");
262 Curl_hash_start_iterate(connc->hash, &iter);
264 he = Curl_hash_next_element(&iter);
266 struct connectbundle *bundle;
267 struct connectdata *conn;
271 fprintf(stderr, "%s -", he->key);
272 curr = bundle->conn_list->head;
276 fprintf(stderr, " [%p %d]", (void *)conn, conn->inuse);
279 fprintf(stderr, "\n");
281 he = Curl_hash_next_element(&iter);