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-rw-r--r--lib/vquic/ngtcp2.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/lib/vquic/ngtcp2.c b/lib/vquic/ngtcp2.c
index e3af71e94..6abbfa2ab 100644
--- a/lib/vquic/ngtcp2.c
+++ b/lib/vquic/ngtcp2.c
@@ -285,9 +285,19 @@ static int transport_params_parse_cb(SSL *ssl, unsigned int ext_type,
return 1;
}
+static FILE *keylog_file; /* not thread-safe */
+static void keylog_callback(const SSL *ssl, const char *line)
+{
+ (void)ssl;
+ fputs(line, keylog_file);
+ fputc('\n', keylog_file);
+ fflush(keylog_file);
+}
+
static SSL_CTX *quic_ssl_ctx(struct Curl_easy *data)
{
SSL_CTX *ssl_ctx = SSL_CTX_new(TLS_method());
+ const char *keylog_filename;
SSL_CTX_set_min_proto_version(ssl_ctx, TLS1_3_VERSION);
SSL_CTX_set_max_proto_version(ssl_ctx, TLS1_3_VERSION);
@@ -323,6 +333,14 @@ static SSL_CTX *quic_ssl_ctx(struct Curl_easy *data)
return NULL;
}
+ keylog_filename = getenv("SSLKEYLOGFILE");
+ if(keylog_filename) {
+ keylog_file = fopen(keylog_filename, "wb");
+ if(keylog_file) {
+ SSL_CTX_set_keylog_callback(ssl_ctx, keylog_callback);
+ }
+ }
+
return ssl_ctx;
}