Update networking layer w/ CURL and emscripten impl

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

@@ -0,0 +1,56 @@
+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Title: curl_url_strerror
+Section: 3
+Source: libcurl
+See-also:
+  - curl_easy_strerror (3)
+  - curl_multi_strerror (3)
+  - curl_share_strerror (3)
+  - curl_url_get (3)
+  - curl_url_set (3)
+  - libcurl-errors (3)
+Protocol:
+  - All
+Added-in: 7.80.0
+---
+
+# NAME
+
+curl_url_strerror - return string describing error code
+
+# SYNOPSIS
+
+~~~c
+#include <curl/curl.h>
+
+const char *curl_url_strerror(CURLUcode errornum);
+~~~
+
+# DESCRIPTION
+
+This function returns a string describing the CURLUcode error code passed in
+the argument *errornum*.
+
+# %PROTOCOLS%
+
+# EXAMPLE
+
+~~~c
+int main(void)
+{
+  CURLUcode rc;
+  CURLU *url = curl_url();
+  rc = curl_url_set(url, CURLUPART_URL, "https://example.com", 0);
+  if(rc)
+    printf("URL error: %s\n", curl_url_strerror(rc));
+  curl_url_cleanup(url);
+}
+~~~
+
+# %AVAILABILITY%
+
+# RETURN VALUE
+
+A pointer to a null-terminated string.