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-rw-r--r--openssl/doc/ssl/SSL_CTX_set_mode.pod10
1 files changed, 10 insertions, 0 deletions
diff --git a/openssl/doc/ssl/SSL_CTX_set_mode.pod b/openssl/doc/ssl/SSL_CTX_set_mode.pod
index 9822544e5..8cb669dae 100644
--- a/openssl/doc/ssl/SSL_CTX_set_mode.pod
+++ b/openssl/doc/ssl/SSL_CTX_set_mode.pod
@@ -61,6 +61,16 @@ deal with read/write operations returning without success report. The
flag SSL_MODE_AUTO_RETRY will cause read/write operations to only
return after the handshake and successful completion.
+=item SSL_MODE_RELEASE_BUFFERS
+
+When we no longer need a read buffer or a write buffer for a given SSL,
+then release the memory we were using to hold it. Released memory is
+either appended to a list of unused RAM chunks on the SSL_CTX, or simply
+freed if the list of unused chunks would become longer than
+SSL_CTX->freelist_max_len, which defaults to 32. Using this flag can
+save around 34k per idle SSL connection.
+This flag has no effect on SSL v2 connections, or on DTLS connections.
+
=back
=head1 RETURN VALUES