CURLINFO_RETRY_AFTER.3 2.4 KB

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  23. .TH CURLINFO_RETRY_AFTER 3 "6 Aug 2019" "libcurl 7.66.0" "curl_easy_getinfo options"
  24. .SH NAME
  25. CURLINFO_RETRY_AFTER \- returns the Retry-After retry delay
  26. .SH SYNOPSIS
  27. #include <curl/curl.h>
  28. CURLcode curl_easy_getinfo(CURL *handle, CURLINFO_RETRY_AFTER, curl_off_t *retry);
  29. .SH DESCRIPTION
  30. Pass a pointer to a curl_off_t variable to receive the number of seconds the
  31. HTTP server suggesets the client should wait until the next request is
  32. issued. The information from the "Retry-After:" header.
  33. While the HTTP header might contain a fixed date string, the
  34. \fICURLINFO_RETRY_AFTER(3)\fP will alwaus return number of seconds to wait -
  35. or zero if there was no header or the header couldn't be parsed.
  36. .SH DEFAULT
  37. Returns zero delay if there was no header.
  38. .SH PROTOCOLS
  39. HTTP(S)
  40. .SH EXAMPLE
  41. .nf
  42. CURL *curl = curl_easy_init();
  43. if(curl) {
  44. CURLcode res;
  45. curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
  46. res = curl_easy_perform(curl);
  47. if(res == CURLE_OK) {
  48. curl_off_t wait = 0;
  49. curl_easy_getinfo(curl, CURLINFO_RETRY_AFTER, &wait);
  50. if(wait)
  51. printf("Wait for %" CURL_FORMAT_CURL_OFF_T " seconds\\n", wait);
  52. }
  53. curl_easy_cleanup(curl);
  54. }
  55. .fi
  56. .SH AVAILABILITY
  57. Added in curl 7.66.0
  58. .SH RETURN VALUE
  59. Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION if not.
  60. .SH "SEE ALSO"
  61. .BR CURLOPT_STDERR "(3), " CURLOPT_HEADERFUNCTION "(3), "