개요

• 솔라나라에 설명된 어플리케이션에 대해 맨 페이지를 찾아 출력한다.
• MAN 페이지에 대한 설명은 윈디하나의 솔라나라: MAN 페이지을 참고하자.
• svcadm(8)을 검색하려면 섹션에서 8 을 선택하고, 맨 페이지 이름에 svcadm을 입력하고 검색을 누른다.

curl_easy_upkeep(3)

curl_easy_upkeep(3)             libcurl Manual             curl_easy_upkeep(3)



NAME
       curl_easy_upkeep - Perform any connection upkeep checks.

SYNOPSIS
       #include <curl/curl.h>

       CURLcode curl_easy_upkeep(CURL *handle);

DESCRIPTION
       Some  protocols  have  "connection upkeep" mechanisms. These mechanisms
       usually send some traffic on existing connections in order to keep them
       alive;  this can prevent connections from being closed due to overzeal‐
       ous firewalls, for example.

       Currently the only protocol  with  a  connection  upkeep  mechanism  is
       HTTP/2:   when   the   connection   upkeep  interval  is  exceeded  and
       curl_easy_upkeep(3) is called, an HTTP/2 PING frame is sent on the con‐
       nection.

       This  function must be explicitly called in order to perform the upkeep
       work.  The connection upkeep interval is set with CURLOPT_UPKEEP_INTER‐
       VAL_MS(3).

EXAMPLE
       CURL *curl = curl_easy_init();
       if(curl) {
         /* Make a connection to an HTTP/2 server. */
         curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");

         /* Set the interval to 30000ms / 30s */
         curl_easy_setopt(curl, CURLOPT_UPKEEP_INTERVAL_MS, 30000L);

         curl_easy_perform(curl);

         /* Perform more work here. */

         /* While the connection is being held open, curl_easy_upkeep() can be
            called. If curl_easy_upkeep() is called and the time since the last
            upkeep exceeds the interval, then an HTTP/2 PING is sent. */
         curl_easy_upkeep(curl);

         /* Perform more work here. */

         /* always cleanup */
         curl_easy_cleanup(curl);
       }

AVAILABILITY
       Added in 7.62.0.

RETURN VALUE
       On success, returns CURLE_OK.

       On failure, returns the appropriate error code.

SEE ALSO
       CURLOPT_TCP_KEEPALIVE(3), CURLOPT_TCP_KEEPIDLE(3),



libcurl 7.86.0                   May 17, 2022              curl_easy_upkeep(3)