curl_easy_perform(3) [mojave man page]

curl_easy_perform(3)						  libcurl Manual					      curl_easy_perform(3)

NAME

       curl_easy_perform - perform a blocking file transfer

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_perform(CURL *easy_handle);

DESCRIPTION

       Invoke  this function after curl_easy_init(3) and all the curl_easy_setopt(3) calls are made, and will perform the transfer as described in
       the options. It must be called with the same easy_handle as input as the curl_easy_init(3) call returned.

       curl_easy_perform(3) performs the entire request in a blocking manner and returns when done, or if it failed.  For  non-blocking  behavior,
       see curl_multi_perform(3).

       You  can do any amount of calls to curl_easy_perform(3) while using the same easy_handle. If you intend to transfer more than one file, you
       are even encouraged to do so. libcurl will then attempt to re-use the same connection for the following transfers, thus making  the  opera-
       tions  faster,  less  CPU  intense  and	using  less network resources. Just note that you will have to use curl_easy_setopt(3) between the
       invokes to set options for the following curl_easy_perform.

       You must never call this function simultaneously from two places using the same easy_handle. Let the function return first before  invoking
       it another time. If you want parallel transfers, you must use several curl easy_handles.

       While the easy_handle is added to a multi handle, it cannot be used by curl_easy_perform(3).

RETURN VALUE

       CURLE_OK  (0)  means  everything  was  ok,  non-zero  means an error occurred as <curl/curl.h> defines - see libcurl-errors(3). If the CUR-
       LOPT_ERRORBUFFER(3) was set with curl_easy_setopt(3) there will be a readable error message in the error buffer when non-zero is returned.

EXAMPLE

       CURL *curl = curl_easy_init();
       if(curl) {
	 CURLcode res;
	 curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
	 res = curl_easy_perform(curl);
	 curl_easy_cleanup(curl);
       }

SEE ALSO

       curl_easy_init(3), curl_easy_setopt(3), curl_multi_add_handle(3), curl_multi_perform(3), libcurl-errors(3),

libcurl 7.54.0							   May 02, 2016 					      curl_easy_perform(3)

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CURLOPT_DEFAULT_PROTOCOL(3)				     curl_easy_setopt options				       CURLOPT_DEFAULT_PROTOCOL(3)

NAME

       CURLOPT_DEFAULT_PROTOCOL - default protocol to use if the URL is missing a scheme name

SYNOPSIS

       #include <curl/curl.h>

       CURLcode curl_easy_setopt(CURL *handle, CURLOPT_DEFAULT_PROTOCOL, char *protocol);

DESCRIPTION

       This option tells libcurl to use protocol if the URL is missing a scheme name.

       Use one of these protocol (scheme) names:

       dict, file, ftp, ftps, gopher, http, https, imap, imaps, ldap, ldaps, pop3, pop3s, rtsp, scp, sftp, smb, smbs, smtp, smtps, telnet, tftp

       An  unknown  or	unsupported  protocol  causes  error CURLE_UNSUPPORTED_PROTOCOL when libcurl parses a schemeless URL. Parsing happens when
       curl_easy_perform(3) or curl_multi_perform(3) is called. The protocols supported by libcurl will vary depending on how it  was  built.  Use
       curl_version_info(3) if you need a list of protocol names supported by the build of libcurl that you are using.

       This option does not change the default proxy protocol (http).

       Without this option libcurl would make a guess based on the host, see CURLOPT_URL(3) for details.

       The application does not have to keep the string around after setting this option.

DEFAULT

       NULL (make a guess based on the host)

PROTOCOLS

       All

EXAMPLE

       curl = curl_easy_init();
       if(curl) {
	 /* set a URL without a scheme */
	 curl_easy_setopt(curl, CURLOPT_URL, "example.com");

	 /* set the default protocol (scheme) for schemeless URLs */
	 curl_easy_setopt(curl, CURLOPT_DEFAULT_PROTOCOL, "https");

	 /* Perform the request */
	 curl_easy_perform(curl);
       }

AVAILABILITY

       Added in 7.45.0

RETURN VALUE

       CURLE_OK if the option is supported.

       CURLE_OUT_OF_MEMORY if there was insufficient heap space.

       CURLE_UNKNOWN_OPTION if the option is not supported.

SEE ALSO

       CURLOPT_URL(3),

libcurl 7.54.0							 December 21, 2016				       CURLOPT_DEFAULT_PROTOCOL(3)

Linux and UNIX Man Pages

curl_easy_perform(3) [mojave man page]

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