check_curl: try to be more helpful in check_curls help

Trying to be more specific with the check_curl help.
The idea is to clarify how the parameters are supposed to be used.

1 files changed, 5 insertions, 2 deletions

diff --git a/plugins/check_curl.c b/plugins/check_curl.c
index fc704171..2c258f36 100644
--- a/plugins/check_curl.c
+++ b/plugins/check_curl.c
@@ -1480,7 +1480,9 @@ void print_help(void) {
         printf("    %s\n", _("Append a port to include it in the header (eg: example.com:5000)"));
         printf(" %s\n", "-I, --IP-address=ADDRESS");
         printf("    %s\n",
-                   _("IP address or name (use numeric address if possible to bypass DNS lookup)."));
+                   "IP address or name (use numeric address if possible to bypass DNS lookup).\n");
+        printf("    %s\n",
+                     "This overwrites the network address of the target while leaving everything else (HTTP headers) as they are");
         printf(" %s\n", "-p, --port=INTEGER");
         printf("    %s", _("Port number (default: "));
         printf("%d)\n", HTTP_PORT);
@@ -1544,6 +1546,7 @@ void print_help(void) {
         printf("    %s\n", _("String to expect in the content"));
         printf(" %s\n", "-u, --url=PATH");
         printf("    %s\n", _("URL to GET or POST (default: /)"));
+        printf("    %s\n", _("This is the part after the address in a URL, so for \"https://example.com/index.html\" it would be '-u /index.html'"));
         printf(" %s\n", "-P, --post=STRING");
         printf("    %s\n", _("URL decoded http POST data"));
         printf(" %s\n",
@@ -1685,7 +1688,7 @@ void print_help(void) {
         printf(" %s\n", _("It is recommended to use an environment proxy like:"));
         printf(" %s\n",
                    _("https_proxy=http://192.168.100.35:3128 ./check_curl -H www.verisign.com -S"));
-        printf(" %s\n", _("legacy proxy requests in check_http style still work:"));
+        printf(" %s\n", _("legacy proxy requests in check_http style might still work, but are frowned upon, so DONT:"));
         printf(" %s\n", _("check_curl -I 192.168.100.35 -p 3128 -u https://www.verisign.com/ -S -j "
                                           "CONNECT -H www.verisign.com "));
         printf(" %s\n", _("all these options are needed: -I <proxy> -p <proxy-port> -u <check-url> "