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examples: consistent variable naming across examples

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- 'CURL *' handles are called 'curl'
- 'CURLM *' handles are called 'multi'
- write callbacks are called 'write_cb'
- read callbacs are called 'read_cb'
- CURLcode variables are called 'res'

It makes the examples look and feel more consistent. It allows for
easier copy and pasting between examples.

Closes #19299
This commit is contained in:
Daniel Stenberg 2025-10-31 14:42:30 +01:00
parent 0313223853
commit 928363f28c
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59 changed files with 715 additions and 725 deletions
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32
docs/examples/multi-app.c
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@ -43,8 +43,8 @@
int main(void)
{
CURL *handles[HANDLECOUNT];
CURLM *multi_handle;
CURL *curl[HANDLECOUNT];
CURLM *multi;
int i;
@ -54,17 +54,17 @@ int main(void)
/* Allocate one curl handle per transfer */
for(i = 0; i < HANDLECOUNT; i++)
handles[i] = curl_easy_init();
curl[i] = curl_easy_init();
/* set the options (I left out a few, you get the point anyway) */
curl_easy_setopt(handles[HTTP_HANDLE], CURLOPT_URL, "https://example.com");
curl_easy_setopt(curl[HTTP_HANDLE], CURLOPT_URL, "https://example.com");
curl_easy_setopt(handles[FTP_HANDLE], CURLOPT_URL, "ftp://example.com");
curl_easy_setopt(handles[FTP_HANDLE], CURLOPT_UPLOAD, 1L);
curl_easy_setopt(curl[FTP_HANDLE], CURLOPT_URL, "ftp://example.com");
curl_easy_setopt(curl[FTP_HANDLE], CURLOPT_UPLOAD, 1L);
/* init a multi stack */
multi_handle = curl_multi_init();
if(multi_handle) {
multi = curl_multi_init();
if(multi) {
int still_running = 1; /* keep number of running handles */
@ -73,14 +73,14 @@ int main(void)
/* add the individual transfers */
for(i = 0; i < HANDLECOUNT; i++)
curl_multi_add_handle(multi_handle, handles[i]);
curl_multi_add_handle(multi, curl[i]);
while(still_running) {
CURLMcode mc = curl_multi_perform(multi_handle, &still_running);
CURLMcode mc = curl_multi_perform(multi, &still_running);
if(still_running)
/* wait for activity, timeout or "nothing" */
mc = curl_multi_poll(multi_handle, NULL, 0, 1000, NULL);
mc = curl_multi_poll(multi, NULL, 0, 1000, NULL);
if(mc)
break;
@ -88,13 +88,13 @@ int main(void)
/* See how the transfers went */
/* !checksrc! disable EQUALSNULL 1 */
while((msg = curl_multi_info_read(multi_handle, &msgs_left)) != NULL) {
while((msg = curl_multi_info_read(multi, &msgs_left)) != NULL) {
if(msg->msg == CURLMSG_DONE) {
int idx;
/* Find out which handle this message is about */
for(idx = 0; idx < HANDLECOUNT; idx++) {
int found = (msg->easy_handle == handles[idx]);
int found = (msg->easy_handle == curl[idx]);
if(found)
break;
}
@ -112,14 +112,14 @@ int main(void)
/* remove the transfers */
for(i = 0; i < HANDLECOUNT; i++)
curl_multi_remove_handle(multi_handle, handles[i]);
curl_multi_remove_handle(multi, curl[i]);
curl_multi_cleanup(multi_handle);
curl_multi_cleanup(multi);
}
/* Free the curl handles */
for(i = 0; i < HANDLECOUNT; i++)
curl_easy_cleanup(handles[i]);
curl_easy_cleanup(curl[i]);
curl_global_cleanup();