examples: improve global init, error checks and returning errors

- add `curl_global_init()` and `curl_global_cleanup()` where missing.
- check the result of `curl_global_init()` where missing.
- return the last curl error from `main()`.
- drop Win32-specific socket initialization in favor of `curl_global_init()`.
- rename some outliers to `res` for curl result code.
- fix cleanup in some error cases.

Inspired by Joshua's report on examples.

Closes #19053
This commit is contained in:
Viktor Szakats 2025-10-13 16:30:18 +02:00
parent 3049c8e0a0
commit 4c7507daf9
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129 changed files with 990 additions and 485 deletions

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@ -421,9 +421,15 @@ int main(void)
int fd;
GIOChannel* ch;
CURLcode res = curl_global_init(CURL_GLOBAL_ALL);
if(res)
return (int)res;
fd = init_fifo();
if(fd == CURL_SOCKET_BAD)
if(fd == CURL_SOCKET_BAD) {
curl_global_cleanup();
return 1;
}
ch = g_io_channel_unix_new(fd);
g_io_add_watch(ch, G_IO_IN, fifo_cb, g);
gmain = g_main_loop_new(NULL, FALSE);
@ -438,5 +444,6 @@ int main(void)
g_main_loop_run(gmain);
curl_multi_cleanup(g->multi);
curl_global_cleanup();
return 0;
}