curl request through c++ for indexing solr document - c++

Question

I have used following code for indexing document in solr
CURL *curl = curl_easy_init();
CURLcode res;
if(curl) {
/* First set the URL that is about to receive our POST. This URL can
just as well be a https:// URL if that is what should receive the
data. */
curl_easy_setopt(curl, CURLOPT_URL, "http://192.168.0.164:8983/solr/collection1/update?replacefields=false -H 'Content-type: application/json' -d '[{\"id\":\"4000\", \"to\":\"Life is to.\", \"cc\":\"unknown \", \"subject\":\"Life\"}]'");
/* Perform the request, res will get the return code */
res = curl_easy_perform(curl);
if(CURLE_OK == res){
logger.LogError("res value CURLE_OK");
}
/* always cleanup */
curl_easy_cleanup(curl);
}
and the return value of curl_easy_perform(curl) i.e. res is CURLE_OK but the record is not indexing in collection1 of solr and while posting following command from terminal record is getting indexed
curl http://192.168.0.164:8983/solr/collection1/update?replacefields=false -H 'Content-type: application/json' -d '[{"id":"4000", "to":"Life is to.", "cc":"unknown ", "subject":"Life"}]'

Answer 1

You're not supplying cURL with your proper URL. Everything after the actual URL, -H 'Content-type: application/json' -d '[{\"id\":\"4000\", \"to\":\"Life is to.\", \"cc\":\"unknown \", \"subject\":\"Life\"}]', is just arguments to the cURL command line tool, and is not part of the URL.
The URL option should be only http://192.168.0.164:8983/solr/collection1/update?replacefields=false. The rest of the parameters has to be set as their own curl_easy_setopt calls.
To set the data to POST, use CURLOPT_POSTFIELDS.
Pass a char * as parameter, pointing to the full data to send in a HTTP POST operation. You must make sure that the data is formatted the way you want the server to receive it.
To set the proper request content type, use CURLOPT_HTTPHEADER.
Pass a pointer to a linked list of HTTP headers to pass to the server and/or proxy in your HTTP request. The same list can be used for both host and proxy requests!
After setting all the options call curl_easy_perform. You may also want to watch the log on the Solr server to see if Solr generates an exception. You can also set CURLOPT_ERRORBUFFER and CURLOPT_VERBOSE to get more information about any failure internally in cURL (CURLE_OK will be returned as long as cURL is able to make the request - but does not change if the server returns 400 or 404 or any actual error code on the server side (except if CURLOPT_FAILONERROR is set).