Handling responses in libcurl
- by sfactor
i have a code to send a Form Post with login credentials to a webpage. it looks like this
CURL *curl;
CURLcode res;
struct curl_httppost *formpost=NULL;
struct curl_httppost *lastptr=NULL;
struct curl_slist *headerlist=NULL;
static const char buf[] = "Expect:";
curl_global_init(CURL_GLOBAL_ALL);
/* Fill in the username */
curl_formadd(&formpost,
&lastptr,
CURLFORM_COPYNAME, "user",
CURLFORM_COPYCONTENTS, "username",
CURLFORM_END);
/* Fill in the password */
curl_formadd(&formpost,
&lastptr,
CURLFORM_COPYNAME, "pass",
CURLFORM_COPYCONTENTS, "password",
CURLFORM_END);
/* Fill in the submit field too, even if this is rarely needed */
curl_formadd(&formpost,
&lastptr,
CURLFORM_COPYNAME, "submit",
CURLFORM_COPYCONTENTS, "send",
CURLFORM_END);
curl = curl_easy_init();
/* initalize custom header list (stating that Expect: 100-continue is not
wanted */
headerlist = curl_slist_append(headerlist, buf);
if(curl) {
/* what URL that receives this POST */
curl_easy_setopt(curl, CURLOPT_URL, "http://127.0.0.1:8000/index.html");
/* only disable 100-continue header if explicitly requested */
curl_easy_setopt(curl, CURLOPT_HTTPHEADER, headerlist);
curl_easy_setopt(curl, CURLOPT_HTTPPOST, formpost);
res = curl_easy_perform(curl);
/* always cleanup */
curl_easy_cleanup(curl);
/* then cleanup the formpost chain */
curl_formfree(formpost);
/* free slist */
curl_slist_free_all (headerlist);
}
now i need to know is how do i handle the responses i get back from the server? i need to store the response into a string and then work on it.
