CURLOPT_WRITEFUNCTION.3: add inline example and new see-also
Closes #5192
diff --git a/docs/libcurl/opts/CURLOPT_WRITEFUNCTION.3 b/docs/libcurl/opts/CURLOPT_WRITEFUNCTION.3
index 11edeb2..254246e 100644
--- a/docs/libcurl/opts/CURLOPT_WRITEFUNCTION.3
+++ b/docs/libcurl/opts/CURLOPT_WRITEFUNCTION.3
@@ -5,7 +5,7 @@
.\" * | (__| |_| | _ <| |___
.\" * \___|\___/|_| \_\_____|
.\" *
-.\" * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
+.\" * Copyright (C) 1998 - 2020, Daniel Stenberg, <daniel@haxx.se>, et al.
.\" *
.\" * This software is licensed as described in the file COPYING, which
.\" * you should have received as part of this distribution. The terms
@@ -76,8 +76,37 @@
.SH RETURN VALUE
This will return CURLE_OK.
.SH EXAMPLE
-A common technique is to use this callback to store the incoming data into a
-dynamically growing allocated buffer. Like in the getinmemory example:
-https://curl.haxx.se/libcurl/c/getinmemory.html
+.NF
+ struct memory {
+ char *response;
+ size_t size;
+ };
+
+ static size_t cb(void *data, size_t size, size_t nmemb, void *userp)
+ {
+ size_t realsize = size * nmemb;
+ struct memory *mem = (struct memory *)userp;
+
+ char *ptr = realloc(mem->response, mem->size + realsize + 1);
+ if(ptr == NULL)
+ return 0; /* out of memory! */
+
+ mem->response = ptr;
+ memcpy(&(mem->response[mem->size]), data, realsize);
+ mem->size += realsize;
+ mem->response[mem->size] = 0;
+
+ return realsize;
+ }
+
+ struct memory chunk;
+
+ /* send all data to this function */
+ curl_easy_setopt(curl_handle, CURLOPT_WRITEFUNCTION, cb);
+
+ /* we pass our 'chunk' struct to the callback function */
+ curl_easy_setopt(curl_handle, CURLOPT_WRITEDATA, (void *)&chunk);
+.FI
.SH "SEE ALSO"
.BR CURLOPT_WRITEDATA "(3), " CURLOPT_READFUNCTION "(3), "
+.BR CURLOPT_HEADERFUNCTION "(3), "
