Add new TLS callback for when session is activated

The current session established cb happens before the session is
activated, so it is not possible to send application data in
response to the connection being made.

2 files changed, 8 insertions, 0 deletions

diff --git a/src/lib/tls/tls_callbacks.h b/src/lib/tls/tls_callbacks.h
index 4a14055f9..f81071a05 100644
--- a/src/lib/tls/tls_callbacks.h
+++ b/src/lib/tls/tls_callbacks.h
@@ -75,6 +75,12 @@ class BOTAN_DLL Callbacks
        virtual bool tls_session_established(const Session& session) = 0;
 
        /**
+       * Optional callback: session activated
+       * Called when a session is active and can be written to
+       */
+       virtual void tls_session_activated() {}
+
+       /**
        * Optional callback: inspect handshake message
        * Throw an exception to abort the handshake.
        * Default simply ignores the message.
diff --git a/src/lib/tls/tls_channel.cpp b/src/lib/tls/tls_channel.cpp
index 574be8a46..95b151ad2 100644
--- a/src/lib/tls/tls_channel.cpp
+++ b/src/lib/tls/tls_channel.cpp
@@ -284,6 +284,8 @@ void Channel::activate_session()
       map_remove_if(not_current_epoch, m_write_cipher_states);
       map_remove_if(not_current_epoch, m_read_cipher_states);
       }
+
+   callbacks().tls_session_activated();
    }
 
 size_t Channel::received_data(const std::vector<byte>& buf)