curl_slist_append
Section: libcurl Manual (3)
Updated: November 05, 2020
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NAME
curl_slist_append - add a string to an slist
SYNOPSIS
#include <curl/curl.h>
struct curl_slist *curl_slist_append(struct curl_slist *list,
const char * string);
DESCRIPTION
curl_slist_append(3) appends a string to a linked list of strings. The
existing
list should be passed as the first argument and the new list is
returned from this function. Pass in NULL in the
list argument to create
a new list. The specified
string has been appended when this function
returns.
curl_slist_append(3) copies the string.
The list should be freed again (after usage) with
curl_slist_free_all(3).
RETURN VALUE
A null pointer is returned if anything went wrong, otherwise the new list
pointer is returned. To avoid overwriting an existing non-empty list on
failure, the new list should be returned to a temporary variable which can
be tested for NULL before updating the original list pointer.
EXAMPLE
CURL *handle;
struct curl_slist *slist=NULL;
struct curl_slist *temp=NULL;
slist = curl_slist_append(slist, "pragma:");
if (slist == NULL)
return -1;
temp = curl_slist_append(slist, "Accept:")
if (temp == NULL) {
curl_slist_free_all(slist);
return -1;
}
slist = temp;
curl_easy_setopt(handle, CURLOPT_HTTPHEADER, slist);
curl_easy_perform(handle);
curl_slist_free_all(slist); /* free the list again */
SEE ALSO
curl_slist_free_all(3),