+/* codes 110-114 are from RFC3546 */
+#define TLS1_AD_UNSUPPORTED_EXTENSION 110
+#define TLS1_AD_CERTIFICATE_UNOBTAINABLE 111
+#define TLS1_AD_UNRECOGNIZED_NAME 112
+#define TLS1_AD_BAD_CERTIFICATE_STATUS_RESPONSE 113
+#define TLS1_AD_BAD_CERTIFICATE_HASH_VALUE 114
+#define TLS1_AD_UNKNOWN_PSK_IDENTITY 115 /* fatal */
+
+/* ExtensionType values from RFC3546 / RFC4366 / RFC6066 */
+#define TLSEXT_TYPE_server_name 0
+#define TLSEXT_TYPE_max_fragment_length 1
+#define TLSEXT_TYPE_client_certificate_url 2
+#define TLSEXT_TYPE_trusted_ca_keys 3
+#define TLSEXT_TYPE_truncated_hmac 4
+#define TLSEXT_TYPE_status_request 5
+/* ExtensionType values from RFC4681 */
+#define TLSEXT_TYPE_user_mapping 6
+
+/* ExtensionType values from RFC5878 */
+#define TLSEXT_TYPE_client_authz 7
+#define TLSEXT_TYPE_server_authz 8
+
+/* ExtensionType values from RFC6091 */
+#define TLSEXT_TYPE_cert_type 9
+
+/* ExtensionType values from RFC4492 */
+#define TLSEXT_TYPE_elliptic_curves 10
+#define TLSEXT_TYPE_ec_point_formats 11
+
+/* ExtensionType value from RFC5054 */
+#define TLSEXT_TYPE_srp 12
+
+/* ExtensionType values from RFC5246 */
+#define TLSEXT_TYPE_signature_algorithms 13
+
+/* ExtensionType value from RFC5764 */
+#define TLSEXT_TYPE_use_srtp 14
+
+/* ExtensionType value from RFC5620 */
+#define TLSEXT_TYPE_heartbeat 15
+
+/* ExtensionType value from draft-ietf-tls-applayerprotoneg-00 */
+#define TLSEXT_TYPE_application_layer_protocol_negotiation 16
+
+/* ExtensionType value from RFC4507 */
+#define TLSEXT_TYPE_session_ticket 35
+
+/* ExtensionType value from draft-rescorla-tls-opaque-prf-input-00.txt */
+#if 0 /* will have to be provided externally for now ,
+ * i.e. build with -DTLSEXT_TYPE_opaque_prf_input=38183
+ * using whatever extension number you'd like to try */
+# define TLSEXT_TYPE_opaque_prf_input ?? */
+#endif
+
+/* Temporary extension type */
+#define TLSEXT_TYPE_renegotiate 0xff01
+
+#ifndef OPENSSL_NO_NEXTPROTONEG
+/* This is not an IANA defined extension number */
+#define TLSEXT_TYPE_next_proto_neg 13172
+#endif
+
+/* NameType value from RFC 3546 */
+#define TLSEXT_NAMETYPE_host_name 0
+/* status request value from RFC 3546 */
+#define TLSEXT_STATUSTYPE_ocsp 1
+
+/* ECPointFormat values from draft-ietf-tls-ecc-12 */
+#define TLSEXT_ECPOINTFORMAT_first 0
+#define TLSEXT_ECPOINTFORMAT_uncompressed 0
+#define TLSEXT_ECPOINTFORMAT_ansiX962_compressed_prime 1
+#define TLSEXT_ECPOINTFORMAT_ansiX962_compressed_char2 2
+#define TLSEXT_ECPOINTFORMAT_last 2
+
+/* Signature and hash algorithms from RFC 5246 */
+
+#define TLSEXT_signature_anonymous 0
+#define TLSEXT_signature_rsa 1
+#define TLSEXT_signature_dsa 2
+#define TLSEXT_signature_ecdsa 3
+
+/* Total number of different signature algorithms */
+#define TLSEXT_signature_num 4
+
+#define TLSEXT_hash_none 0
+#define TLSEXT_hash_md5 1
+#define TLSEXT_hash_sha1 2
+#define TLSEXT_hash_sha224 3
+#define TLSEXT_hash_sha256 4
+#define TLSEXT_hash_sha384 5
+#define TLSEXT_hash_sha512 6
+
+/* Total number of different digest algorithms */
+
+#define TLSEXT_hash_num 7
+
+/* Flag set for unrecognised algorithms */
+#define TLSEXT_nid_unknown 0x1000000
+
+/* ECC curves */
+
+#define TLSEXT_curve_P_256 23
+#define TLSEXT_curve_P_384 24
+
+#ifndef OPENSSL_NO_TLSEXT
+
+#define TLSEXT_MAXLEN_host_name 255
+
+/* From RFC 5878 */
+#define TLSEXT_SUPPLEMENTALDATATYPE_authz_data 16386
+
+/* DTCP Authorization Type
+ * https://www.iana.org/assignments/tls-parameters/tls-parameters.xml#authorization-data-rules
+ * http://tools.ietf.org/id/draft-dthakore-tls-authz-04.txt
+ */
+#define TLSEXT_AUTHZDATAFORMAT_dtcp 66
+
+#define TLSEXT_MAXLEN_supplemental_data 1024*16 /* Let's limit to 16k */
+
+const char *SSL_get_servername(const SSL *s, const int type);
+int SSL_get_servername_type(const SSL *s);
+/* SSL_export_keying_material exports a value derived from the master secret,
+ * as specified in RFC 5705. It writes |olen| bytes to |out| given a label and
+ * optional context. (Since a zero length context is allowed, the |use_context|
+ * flag controls whether a context is included.)
+ *
+ * It returns 1 on success and zero otherwise.
+ */
+int SSL_export_keying_material(SSL *s, unsigned char *out, size_t olen,
+ const char *label, size_t llen, const unsigned char *p, size_t plen,
+ int use_context);
+
+int SSL_get_sigalgs(SSL *s, int idx,
+ int *psign, int *phash, int *psignandhash,
+ unsigned char *rsig, unsigned char *rhash);
+
+int SSL_get_shared_sigalgs(SSL *s, int idx,
+ int *psign, int *phash, int *psignandhash,
+ unsigned char *rsig, unsigned char *rhash);
+
+int SSL_check_chain(SSL *s, X509 *x, EVP_PKEY *pk, STACK_OF(X509) *chain);
+
+#define SSL_set_tlsext_host_name(s,name) \
+SSL_ctrl(s,SSL_CTRL_SET_TLSEXT_HOSTNAME,TLSEXT_NAMETYPE_host_name,(char *)name)
+
+#define SSL_set_tlsext_debug_callback(ssl, cb) \
+SSL_callback_ctrl(ssl,SSL_CTRL_SET_TLSEXT_DEBUG_CB,(void (*)(void))cb)
+
+#define SSL_set_tlsext_debug_arg(ssl, arg) \
+SSL_ctrl(ssl,SSL_CTRL_SET_TLSEXT_DEBUG_ARG,0, (void *)arg)
+
+#define SSL_set_tlsext_status_type(ssl, type) \
+SSL_ctrl(ssl,SSL_CTRL_SET_TLSEXT_STATUS_REQ_TYPE,type, NULL)
+
+#define SSL_get_tlsext_status_exts(ssl, arg) \
+SSL_ctrl(ssl,SSL_CTRL_GET_TLSEXT_STATUS_REQ_EXTS,0, (void *)arg)
+
+#define SSL_set_tlsext_status_exts(ssl, arg) \
+SSL_ctrl(ssl,SSL_CTRL_SET_TLSEXT_STATUS_REQ_EXTS,0, (void *)arg)
+
+#define SSL_get_tlsext_status_ids(ssl, arg) \
+SSL_ctrl(ssl,SSL_CTRL_GET_TLSEXT_STATUS_REQ_IDS,0, (void *)arg)
+
+#define SSL_set_tlsext_status_ids(ssl, arg) \
+SSL_ctrl(ssl,SSL_CTRL_SET_TLSEXT_STATUS_REQ_IDS,0, (void *)arg)
+
+#define SSL_get_tlsext_status_ocsp_resp(ssl, arg) \
+SSL_ctrl(ssl,SSL_CTRL_GET_TLSEXT_STATUS_REQ_OCSP_RESP,0, (void *)arg)
+
+#define SSL_set_tlsext_status_ocsp_resp(ssl, arg, arglen) \
+SSL_ctrl(ssl,SSL_CTRL_SET_TLSEXT_STATUS_REQ_OCSP_RESP,arglen, (void *)arg)
+
+#define SSL_CTX_set_tlsext_servername_callback(ctx, cb) \
+SSL_CTX_callback_ctrl(ctx,SSL_CTRL_SET_TLSEXT_SERVERNAME_CB,(void (*)(void))cb)
+
+#define SSL_TLSEXT_ERR_OK 0
+#define SSL_TLSEXT_ERR_ALERT_WARNING 1
+#define SSL_TLSEXT_ERR_ALERT_FATAL 2
+#define SSL_TLSEXT_ERR_NOACK 3