1curl_formget(3)                 libcurl Manual                 curl_formget(3)
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NAME

6       curl_formget  -  serialize  a  previously built multipart/formdata HTTP
7       POST chain
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SYNOPSIS

10       #include <curl/curl.h>
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12       int curl_formget(struct curl_httppost * form, void *userp,
13                         curl_formget_callback append );
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DESCRIPTION

16       curl_formget() is used to serialize data previously built/appended with
17       curl_formadd(3).  Accepts a void pointer as second argument named userp
18       which will be passed as the first argument to the curl_formget_callback
19       function.
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21       typedef  size_t (*curl_formget_callback)(void *userp, const char *buf,
22       size_t len);
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24       The curl_formget_callback will be executed for each part  of  the  HTTP
25       POST  chain.  The  character  buffer passed to the callback must not be
26       freed. The callback should return the buffer length  passed  to  it  on
27       success.
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29       If  the CURLFORM_STREAM option is used in the formpost, it will prevent
30       curl_formget(3) from working until you have performed the  actual  HTTP
31       request as only then will libcurl get the actual read callback to use!
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EXAMPLE

34        size_t print_httppost_callback(void *arg, const char *buf, size_t len)
35        {
36          fwrite(buf, len, 1, stdout);
37          (*(size_t *) arg) += len;
38          return len;
39        }
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41        size_t print_httppost(struct curl_httppost *post)
42        {
43          size_t total_size = 0;
44          if(curl_formget(post, &total_size, print_httppost_callback)) {
45            return (size_t) -1;
46          }
47          return total_size;
48        }
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AVAILABILITY

51       This  function  was added in libcurl 7.15.5. The form API is deprecated
52       in libcurl 7.56.0.
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RETURN VALUE

55       0 means everything was ok, non-zero means an error occurred
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SEE ALSO

58       curl_formadd(3), curl_mime_init(3)
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62libcurl 7.85.0                   May 17, 2022                  curl_formget(3)
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