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SSL_callback_ctrl(3)					  SSL_callback_ctrl(3)

NAME
       SSL_callback_ctrl  -  Perform  an  operation (get or set information in
       SSL) for the SSL structure

SYNOPSIS
       #include <openssl/ssl.h>

       long SSL_ctrl(
	       int cmd,
	       long larg,
	       char *parg,
	       SSL *s );

DESCRIPTION
       The SSL_ctrl() function performs an operation (get or  set  information
       in  SSL)	 for  the  SSL	structure. The second argument cmd accepts the
       macros in the following table:

    Table 1: Macros for cmd""
       ────────────────────────────────────────────────────────────────────────
					    SSLv2   SSLv3		 TLSv1
       ────────────────────────────────────────────────────────────────────────
       SSL_CTRL_GET_READ_AHEAD		    YES	    YES			 YES
       SSL_CTRL_SET_READ_AHEAD		    YES	    YES			 YES
       SSL_CTRL_OPTIONS			    YES	    YES			 YES
       SSL_CTRL_MODE			    YES	    YES			 YES
       SSL_CTRL_GET_SESSION_REUSED	    YES	    YES			 NO
       SSL_CTRL_GET_CLIENT_CERT_REQUEST	    NO	    YES			 NO
       SSL_CTRL_GET_NUM_RENEGOTIATIONS	    NO	    YES			 NO
       SSL_CTRL_CLEAR_NUM_RENEGOTIATIONS    NO	    YES			 NO
       SSL_CTRL_GET_TOTAL_RENEGOTIATIONS    NO	    YES			 NO
       SSL_CTRL_GET_FLAGS		    NO	    YES			 NO
       SSL_CTRL_NEED_TMP_RSA		    NO	    YES(#ifndef		 NO
						    NO_RSA)
       SSL_CTRL_SET_TMP_RSA		    NO	    YES(#ifndef		 NO
						    NO_RSA)
       SSL_CTRL_SET_TMP_RSA_CB		    NO	    YES(#ifndef		 NO
						    NO_RSA)
       SSL_CTRL_SET_TMP_DH		    NO	    YES(#ifndef NO_DH)	 NO
       SSL_CTRL_SET_TMP_DH_CB		    NO	    YES(#ifndef NO_DH)	 NO
       ────────────────────────────────────────────────────────────────────────

RETURN VALUES
       The SSL_ctrl() function returns a long. The return value depends on the
       type of command cmd passed to this API.

SEE ALSO
       Functions:   SSL_CTX_ctrl(3),	SSL_callback_ctrl(3),	 SSL_CTX_call‐
       back_ctrl(3)

							  SSL_callback_ctrl(3)

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