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authorDaniel Stenberg <daniel@haxx.se>2017-11-04 17:23:32 +0100
committerDaniel Stenberg <daniel@haxx.se>2017-11-09 11:07:44 +0100
commitedd1f45c9f5f3046d4a18a33f65bbf63721bf178 (patch)
tree4435d101f8ef19df6ea1d07053e1be3861ad4264 /docs/examples
parent67c55a26d51149650e91a00b63cf5107989a57e9 (diff)
test1554: verify connection cache sharing
Diffstat (limited to 'docs/examples')
-rw-r--r--docs/examples/shared-connection-cache.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/docs/examples/shared-connection-cache.c b/docs/examples/shared-connection-cache.c
new file mode 100644
index 000000000..a1aa0d674
--- /dev/null
+++ b/docs/examples/shared-connection-cache.c
@@ -0,0 +1,85 @@
+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2017, Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.haxx.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ***************************************************************************/
+/* <DESC>
+ * Connection cache shared between easy handles with the share inteface
+ * </DESC>
+ */
+#include <stdio.h>
+#include <curl/curl.h>
+
+static void my_lock(CURL *handle, curl_lock_data data,
+ curl_lock_access laccess, void *useptr)
+{
+ (void)handle;
+ (void)data;
+ (void)laccess;
+ (void)useptr;
+ fprintf(stderr, "-> Mutex lock\n");
+}
+
+static void my_unlock(CURL *handle, curl_lock_data data, void *useptr)
+{
+ (void)handle;
+ (void)data;
+ (void)useptr;
+ fprintf(stderr, "<- Mutex unlock\n");
+}
+
+int main(void)
+{
+ CURL *curl;
+ CURLcode res;
+ CURLSH *share;
+ int i;
+
+ share = curl_share_init();
+ curl_share_setopt(share, CURLSHOPT_SHARE, CURL_LOCK_DATA_CONNECT);
+
+ curl_share_setopt(share, CURLSHOPT_LOCKFUNC, my_lock);
+ curl_share_setopt(share, CURLSHOPT_UNLOCKFUNC, my_unlock);
+
+ /* Loop the transfer and cleanup the handle properly every lap. This will
+ still reuse connections since the pool is in the shared object! */
+
+ for(i = 0; i < 3; i++) {
+ curl = curl_easy_init();
+ if(curl) {
+ curl_easy_setopt(curl, CURLOPT_URL, "https://curl.haxx.se/");
+
+ /* use the share object */
+ curl_easy_setopt(curl, CURLOPT_SHARE, share);
+
+ /* Perform the request, res will get the return code */
+ res = curl_easy_perform(curl);
+ /* Check for errors */
+ if(res != CURLE_OK)
+ fprintf(stderr, "curl_easy_perform() failed: %s\n",
+ curl_easy_strerror(res));
+
+ /* always cleanup */
+ curl_easy_cleanup(curl);
+ }
+ }
+
+ curl_share_cleanup(share);
+ return 0;
+}