CURLOPT_MAXCONNECTS.3 2.7 KB

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  23. .TH CURLOPT_MAXCONNECTS 3 "May 30, 2017" "libcurl 7.61.1" "curl_easy_setopt options"
  24. .SH NAME
  25. CURLOPT_MAXCONNECTS \- maximum connection cache size
  26. .SH SYNOPSIS
  27. #include <curl/curl.h>
  28. CURLcode curl_easy_setopt(CURL *handle, CURLOPT_MAXCONNECTS, long amount);
  29. .SH DESCRIPTION
  30. Pass a long. The set \fIamount\fP will be the maximum number of simultaneously
  31. open persistent connections that libcurl may cache in the pool associated with
  32. this handle. The default is 5, and there isn't much point in changing this
  33. value unless you are perfectly aware of how this works and changes libcurl's
  34. behaviour. This concerns connections using any of the protocols that support
  35. persistent connections.
  36. When reaching the maximum limit, curl closes the oldest one in the cache to
  37. prevent increasing the number of open connections.
  38. If you already have performed transfers with this curl handle, setting a
  39. smaller \fICURLOPT_MAXCONNECTS(3)\fP than before may cause open connections to
  40. get closed unnecessarily.
  41. If you add this easy handle to a multi handle, this setting is not
  42. acknowledged, and you must instead use \fIcurl_multi_setopt(3)\fP and the
  43. \fICURLMOPT_MAXCONNECTS(3)\fP option.
  44. .SH DEFAULT
  45. 5
  46. .SH PROTOCOLS
  47. Most
  48. .SH EXAMPLE
  49. .nf
  50. CURL *curl = curl_easy_init();
  51. if(curl) {
  52. CURLcode ret;
  53. curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/");
  54. /* limit the connection cache for this handle to no more than 3 */
  55. curl_easy_setopt(curl, CURLOPT_MAXCONNECTS, 3L);
  56. ret = curl_easy_perform(curl);
  57. }
  58. .fi
  59. .SH AVAILABILITY
  60. Always
  61. .SH RETURN VALUE
  62. Returns CURLE_OK
  63. .SH "SEE ALSO"
  64. .BR CURLMOPT_MAXCONNECTS "(3), " CURLOPT_MAXREDIRS "(3), "