Add Music Manager's curl 7.21.2 source.
Change-Id: I259a43fa52d581524a5ce8ae1711467acb1d9d50
diff --git a/docs/examples/multi-double.c b/docs/examples/multi-double.c
new file mode 100644
index 0000000..3ea106b
--- /dev/null
+++ b/docs/examples/multi-double.c
@@ -0,0 +1,109 @@
+/*****************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ *
+ * This is a very simple example using the multi interface.
+ */
+
+#include <stdio.h>
+#include <string.h>
+
+/* somewhat unix-specific */
+#include <sys/time.h>
+#include <unistd.h>
+
+/* curl stuff */
+#include <curl/curl.h>
+
+/*
+ * Simply download two HTTP files!
+ */
+int main(int argc, char **argv)
+{
+ CURL *http_handle;
+ CURL *http_handle2;
+ CURLM *multi_handle;
+
+ int still_running; /* keep number of running handles */
+
+ http_handle = curl_easy_init();
+ http_handle2 = curl_easy_init();
+
+ /* set options */
+ curl_easy_setopt(http_handle, CURLOPT_URL, "http://www.example.com/");
+
+ /* set options */
+ curl_easy_setopt(http_handle2, CURLOPT_URL, "http://localhost/");
+
+ /* init a multi stack */
+ multi_handle = curl_multi_init();
+
+ /* add the individual transfers */
+ curl_multi_add_handle(multi_handle, http_handle);
+ curl_multi_add_handle(multi_handle, http_handle2);
+
+ /* we start some action by calling perform right away */
+ curl_multi_perform(multi_handle, &still_running);
+
+ while(still_running) {
+ struct timeval timeout;
+ int rc; /* select() return code */
+
+ fd_set fdread;
+ fd_set fdwrite;
+ fd_set fdexcep;
+ int maxfd = -1;
+
+ long curl_timeo = -1;
+
+ FD_ZERO(&fdread);
+ FD_ZERO(&fdwrite);
+ FD_ZERO(&fdexcep);
+
+ /* set a suitable timeout to play around with */
+ timeout.tv_sec = 1;
+ timeout.tv_usec = 0;
+
+ curl_multi_timeout(multi_handle, &curl_timeo);
+ if(curl_timeo >= 0) {
+ timeout.tv_sec = curl_timeo / 1000;
+ if(timeout.tv_sec > 1)
+ timeout.tv_sec = 1;
+ else
+ timeout.tv_usec = (curl_timeo % 1000) * 1000;
+ }
+
+ /* get file descriptors from the transfers */
+ curl_multi_fdset(multi_handle, &fdread, &fdwrite, &fdexcep, &maxfd);
+
+ /* In a real-world program you OF COURSE check the return code of the
+ function calls. On success, the value of maxfd is guaranteed to be
+ greater or equal than -1. We call select(maxfd + 1, ...), specially in
+ case of (maxfd == -1), we call select(0, ...), which is basically equal
+ to sleep. */
+
+ rc = select(maxfd+1, &fdread, &fdwrite, &fdexcep, &timeout);
+
+ switch(rc) {
+ case -1:
+ /* select error */
+ break;
+ case 0:
+ default:
+ /* timeout or readable/writable sockets */
+ curl_multi_perform(multi_handle, &still_running);
+ break;
+ }
+ }
+
+ curl_multi_cleanup(multi_handle);
+
+ curl_easy_cleanup(http_handle);
+ curl_easy_cleanup(http_handle2);
+
+ return 0;
+}