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54ded66618
- always assign the curl_easy_perform() return code (and declare the necessary 'result' variable for it) - always call curl_easy_cleanup() on the created easy handles Closes #21364
73 lines
1.3 KiB
Markdown
73 lines
1.3 KiB
Markdown
---
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c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
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SPDX-License-Identifier: curl
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Title: CURLOPT_HSTSWRITEDATA
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Section: 3
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Source: libcurl
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Protocol:
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- HTTP
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See-also:
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- CURLOPT_HSTS (3)
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- CURLOPT_HSTSREADDATA (3)
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- CURLOPT_HSTSREADFUNCTION (3)
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- CURLOPT_HSTSWRITEFUNCTION (3)
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Added-in: 7.74.0
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---
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# NAME
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CURLOPT_HSTSWRITEDATA - pointer passed to the HSTS write callback
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# SYNOPSIS
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~~~c
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#include <curl/curl.h>
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CURLcode curl_easy_setopt(CURL *handle, CURLOPT_HSTSWRITEDATA, void *pointer);
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~~~
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# DESCRIPTION
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Data *pointer* to pass to the HSTS write function. If you use the
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CURLOPT_HSTSWRITEFUNCTION(3) option, this is the pointer you get as
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input in the fourth argument to the callback.
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This option does not enable HSTS, you need to use CURLOPT_HSTS_CTRL(3) to
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do that.
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# DEFAULT
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NULL
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# %PROTOCOLS%
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# EXAMPLE
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~~~c
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struct MyData {
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void *custom;
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};
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int main(void)
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{
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CURL *curl = curl_easy_init();
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struct MyData this;
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if(curl) {
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CURLcode result;
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curl_easy_setopt(curl, CURLOPT_URL, "http://example.com");
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/* pass pointer that gets passed in to the
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CURLOPT_HSTSWRITEFUNCTION callback */
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curl_easy_setopt(curl, CURLOPT_HSTSWRITEDATA, &this);
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result = curl_easy_perform(curl);
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curl_easy_cleanup(curl);
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}
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}
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~~~
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# %AVAILABILITY%
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# RETURN VALUE
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This returns CURLE_OK.
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