CURLOPT_COOKIEFILE.3 3.4 KB

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  25. .TH CURLOPT_COOKIEFILE 3 "May 17, 2022" "libcurl 7.85.0" "curl_easy_setopt options"
  26. .SH NAME
  27. CURLOPT_COOKIEFILE \- file name to read cookies from
  28. .SH SYNOPSIS
  29. .nf
  30. #include <curl/curl.h>
  31. CURLcode curl_easy_setopt(CURL *handle, CURLOPT_COOKIEFILE, char *filename);
  32. .fi
  33. .SH DESCRIPTION
  34. Pass a pointer to a null-terminated string as parameter. It should point to
  35. the file name of your file holding cookie data to read. The cookie data can be
  36. in either the old Netscape / Mozilla cookie data format or just regular HTTP
  37. headers (Set-Cookie style) dumped to a file.
  38. It also enables the cookie engine, making libcurl parse and send cookies on
  39. subsequent requests with this handle.
  40. Given an empty or non-existing file or by passing the empty string ("") to
  41. this option, you can enable the cookie engine without reading any initial
  42. cookies. If you tell libcurl the file name is "-" (just a single minus sign),
  43. libcurl will instead read from stdin.
  44. This option only \fBreads\fP cookies. To make libcurl write cookies to file,
  45. see \fICURLOPT_COOKIEJAR(3)\fP.
  46. If you use the Set-Cookie file format and do not specify a domain then the
  47. cookie is not sent since the domain will never match. To address this, set a
  48. domain in Set-Cookie line (doing that will include sub-domains) or preferably:
  49. use the Netscape format.
  50. If you use this option multiple times, you just add more files to read.
  51. Subsequent files will add more cookies.
  52. The application does not have to keep the string around after setting this
  53. option.
  54. Setting this option to NULL will (since 7.77.0) explicitly disable the cookie
  55. engine and clear the list of files to read cookies from.
  56. .SH DEFAULT
  57. NULL
  58. .SH PROTOCOLS
  59. HTTP
  60. .SH EXAMPLE
  61. .nf
  62. CURL *curl = curl_easy_init();
  63. if(curl) {
  64. curl_easy_setopt(curl, CURLOPT_URL, "https://example.com/foo.bin");
  65. /* get cookies from an existing file */
  66. curl_easy_setopt(curl, CURLOPT_COOKIEFILE, "/tmp/cookies.txt");
  67. ret = curl_easy_perform(curl);
  68. curl_easy_cleanup(curl);
  69. }
  70. .fi
  71. .SH "Cookie file format"
  72. The cookie file format and general cookie concepts in curl are described in
  73. the HTTP-COOKIES.md file, also hosted online here:
  74. https://curl.se/docs/http-cookies.html
  75. .SH AVAILABILITY
  76. As long as HTTP is supported
  77. .SH RETURN VALUE
  78. Returns CURLE_OK if HTTP is supported, and CURLE_UNKNOWN_OPTION if not.
  79. .SH "SEE ALSO"
  80. .BR CURLOPT_COOKIE "(3), " CURLOPT_COOKIEJAR "(3), "