+ +) New functions/macros
+
+ SSL_CTX_set_msg_callback(ctx, cb)
+ SSL_CTX_set_msg_callback_arg(ctx, arg)
+ SSL_set_msg_callback(ssl, cb)
+ SSL_set_msg_callback_arg(ssl, arg)
+
+ to request calling a callback function
+
+ void cb(int write_p, int version, int content_type,
+ const void *buf, size_t len, SSL *ssl, void *arg)
+
+ whenever a protocol message has been completely received
+ (write_p == 0) or sent (write_p == 1). Here 'version' is the
+ protocol version according to which the SSL library interprets
+ the current protocol message (SSL2_VERSION, SSL3_VERSION, or
+ TLS1_VERSION). 'content_type' is 0 in the case of SSL 2.0, or
+ the content type as defined in the SSL 3.0/TLS 1.0 protocol
+ specification (change_cipher_spec(20), alert(21), handshake(22)).
+ 'buf' and 'len' point to the actual message, 'ssl' to the
+ SSL object, and 'arg' is the application-defined value set by
+ SSL[_CTX]_set_msg_callback_arg().
+
+ 'openssl s_client' and 'openssl s_server' have new '-msg' options
+ to enable a callback that displays all protocol messages.
+ [Bodo Moeller]
+
+ *) Change ssl/s2_clnt.c and ssl/s2_srvr.c so that received handshake
+ messages are stored in a single piece (fixed-length part and
+ variable-length part combined) and fix various bugs found on the way.
+ [Bodo Moeller]
+