1CURLOPT_PREREQDATA(3) curl_easy_setopt options CURLOPT_PREREQDATA(3)
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6 CURLOPT_PREREQDATA - pointer passed to the pre-request callback
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9 #include <curl/curl.h>
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11 CURLcode curl_easy_setopt(CURL *handle, CURLOPT_PREREQDATA, void *pointer);
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14 Pass a pointer that will be untouched by libcurl and passed as the
15 first argument in the pre-request callback set with CURLOPT_PREREQFUNCâ
16 TION(3).
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19 NULL
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22 All
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25 static int prereq_callback(void *clientp,
26 char *conn_primary_ip,
27 char *conn_local_ip,
28 int conn_primary_port,
29 int conn_local_port)
30 {
31 printf("Connection made to %s:%s\n", conn_primary_ip, conn_primary_port);
32 return CURL_PREREQFUNC_OK;
33 }
34
35 {
36 struct data prereq_data;
37 curl_easy_setopt(CURL *handle, CURLOPT_PREREQFUNCTION, prereq_callback);
38 curl_easy_setopt(CURL *handle, CURLOPT_PREREQDATA, &prereq_data);
39 }
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42 Added in 7.80.0
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45 Returns CURLE_OK if the option is supported, and CURLE_UNKNOWN_OPTION
46 if not.
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49 CURLOPT_PREREQFUNCTION(3)
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53libcurl 8.0.1 January 02, 2023 CURLOPT_PREREQDATA(3)