Update networking layer w/ CURL and emscripten impl

External/curl-8.17.0/docs/cmdline-opts/delegation.md

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+---
+c: Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+SPDX-License-Identifier: curl
+Long: delegation
+Arg: <LEVEL>
+Help: GSS-API delegation permission
+Protocols: GSS/kerberos
+Category: auth
+Added: 7.22.0
+Multi: single
+See-also:
+  - insecure
+  - ssl
+Example:
+  - --delegation "none" $URL
+---
+
+# `--delegation`
+
+Set LEVEL what curl is allowed to delegate when it comes to user credentials.
+
+## none
+Do not allow any delegation.
+
+## policy
+Delegates if and only if the OK-AS-DELEGATE flag is set in the Kerberos
+service ticket, which is a matter of realm policy.
+
+## always
+Unconditionally allow the server to delegate.