Update networking layer w/ CURL and emscripten impl

External/curl-8.17.0/docs/libcurl/curl_free.md

@@ -0,0 +1,55 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Title: curl_free
+Section: 3
+Source: libcurl
+See-also:
+  - curl_easy_escape (3)
+  - curl_easy_unescape (3)
+Protocol:
+  - All
+Added-in: 7.1
+---
+
+# NAME
+
+curl_free - reclaim memory that has been obtained through a libcurl call
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+void curl_free(void *ptr);
+~~~
+
+# DESCRIPTION
+
+curl_free reclaims memory that has been obtained through a libcurl call. Use
+curl_free(3) instead of free() to avoid anomalies that can result from
+differences in memory management between your application and libcurl.
+
+Passing in a NULL pointer in *ptr* makes this function return immediately
+with no action.
+
+# %PROTOCOLS%
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  char *width = curl_getenv("COLUMNS");
+  if(width) {
+    /* it was set */
+    curl_free(width);
+  }
+}
+~~~
+
+# %AVAILABILITY%
+
+# RETURN VALUE
+
+None