CURLOPT_CONNECT_ONLY(3) curl_easy_setopt options CURLOPT_CONNECT_ONLY(3)NAME
CURLOPT_CONNECT_ONLY - stop when connected to target server
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_setopt(CURL *handle, CURLOPT_CONNECT_ONLY, long only);
DESCRIPTION
Pass a long. If the parameter equals 1, it tells the library to perform all the required proxy authentication and connection setup, but no
data transfer, and then return.
The option can be used to simply test a connection to a server, but is more useful when used with the CURLINFO_ACTIVESOCKET(3) option to
curl_easy_getinfo(3) as the library can set up the connection and then the application can obtain the most recently used socket for special
data transfers.
DEFAULT
0
PROTOCOLS
HTTP, SMTP, POP3 and IMAP
EXAMPLE
TODO
AVAILABILITY
Added in 7.15.2
RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
SEE ALSO CURLOPT_VERBOSE(3), CURLOPT_HTTPPROXYTUNNEL(3), curl_easy_recv(3), curl_easy_send(3)libcurl 7.54.0 December 18, 2016 CURLOPT_CONNECT_ONLY(3)
Check Out this Related Man Page
CURLINFO_PROTOCOL(3) curl_easy_getinfo options CURLINFO_PROTOCOL(3)NAME
CURLINFO_PROTOCOL - get the protocol used in the connection
SYNOPSIS
#include <curl/curl.h>
CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_PROTOCOL, long *p);
DESCRIPTION
Pass a pointer to a long to receive the version used in the last http connection. The returned value will be one of the CURLPROTO_* val-
ues.
PROTOCOLS
All
EXAMPLE
CURL *curl = curl_easy_init();
if(curl) {
CURLcode res;
curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
res = curl_easy_perform(curl);
if(res == CURLE_OK) {
long protocol;
curl_easy_getinfo(curl, CURLINFO_PROTOCOL, &protocol);
}
curl_easy_cleanup(curl);
}
AVAILABILITY
Added in 7.52.0
RETURN VALUE
Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
SEE ALSO CURLINFO_RESPONSE_CODE(3), curl_easy_getinfo(3), curl_easy_setopt(3),
libcurl 7.54.0 November 23, 2016 CURLINFO_PROTOCOL(3)
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