maint: update deps

deps/curl/docs/libcurl/opts/CURLOPT_RESOLVER_START_DATA.md

@@ -0,0 +1,70 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Title: CURLOPT_RESOLVER_START_DATA
+Section: 3
+Source: libcurl
+See-also:
+  - CURLOPT_PREREQFUNCTION (3)
+  - CURLOPT_RESOLVER_START_FUNCTION (3)
+---
+
+# NAME
+
+CURLOPT_RESOLVER_START_DATA - pointer passed to the resolver start callback
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+CURLcode curl_easy_setopt(CURL *handle, CURLOPT_RESOLVER_START_DATA,
+                          void *pointer);
+~~~
+
+# DESCRIPTION
+
+Pass a *pointer* is be untouched by libcurl and passed as the third
+argument in the resolver start callback set with
+CURLOPT_RESOLVER_START_FUNCTION(3).
+
+# DEFAULT
+
+NULL
+
+# PROTOCOLS
+
+All
+
+# EXAMPLE
+
+~~~c
+static int resolver_start_cb(void *resolver_state, void *reserved,
+                             void *userdata)
+{
+  (void)reserved;
+  printf("Received resolver_state=%p userdata=%p\n",
+         resolver_state, userdata);
+  return 0;
+}
+
+int main(void)
+{
+  CURL *curl = curl_easy_init();
+  if(curl) {
+    curl_easy_setopt(curl, CURLOPT_RESOLVER_START_FUNCTION, resolver_start_cb);
+    curl_easy_setopt(curl, CURLOPT_RESOLVER_START_DATA, curl);
+    curl_easy_setopt(curl, CURLOPT_URL, "https://example.com");
+    curl_easy_perform(curl);
+    curl_easy_cleanup(curl);
+  }
+}
+~~~
+
+# AVAILABILITY
+
+Added in 7.59.0
+
+# RETURN VALUE
+
+Returns CURLE_OK