From befd8d4bd2d4044f3738b7277d2bbda37cc2f63a Mon Sep 17 00:00:00 2001
From: Tamas Levai <levait@tmit.bme.hu>
Date: Wed, 21 Feb 2024 11:37:40 +0100
Subject: [PATCH] net/quic: Allow SSL keylog file for debugging

rustls has a KeyLog implementation that opens a file whose name is
given by the `SSLKEYLOGFILE` environment variable, and writes keys
into it. If SSLKEYLOGFILE is not set, this does nothing.

See
https://docs.rs/rustls/latest/rustls/struct.KeyLogFile.html
https://docs.rs/rustls/latest/rustls/trait.KeyLog.html

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1036>
---
 net/quic/src/utils.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/net/quic/src/utils.rs b/net/quic/src/utils.rs
index c9da4a3f..1d2ab185 100644
--- a/net/quic/src/utils.rs
+++ b/net/quic/src/utils.rs
@@ -144,6 +144,7 @@ fn configure_client(secure_conn: bool, alpns: Vec<String>) -> Result<ClientConfi
             .map(|x| x.as_bytes().to_vec())
             .collect::<Vec<_>>();
         crypto.alpn_protocols = alpn_protocols;
+        crypto.key_log = Arc::new(rustls::KeyLogFile::new());
 
         Ok(ClientConfig::new(Arc::new(crypto)))
     }
@@ -234,6 +235,7 @@ fn configure_server(
         .map(|x| x.as_bytes().to_vec())
         .collect::<Vec<_>>();
     crypto.alpn_protocols = alpn_protocols;
+    crypto.key_log = Arc::new(rustls::KeyLogFile::new());
     let mut server_config = ServerConfig::with_crypto(Arc::new(crypto));
 
     Arc::get_mut(&mut server_config.transport)