--- a/libfdcore/cnxctx.h	Mon Jun 17 10:11:57 2013 +0800
+++ b/libfdcore/cnxctx.h	Tue Jun 18 12:46:01 2013 +0800
@@ -76,11 +76,20 @@
 		uint16_t str_out;	/* Out streams */
 		uint16_t str_in;	/* In streams */
 		uint16_t pairs;		/* max number of pairs ( = min(in, out)) */
-		uint16_t next;		/* # of stream the next message will be sent to */
+		uint16_t next;		/* # of the stream the next message will be sent to */
 		int	 unordered;	/* boolean telling if use of streams > 0 is permitted */
 	} 		cc_sctp_para;
+	
+	/* For DTLS over SCTP */
+	struct {
+		/* This structure will be changed if we implement a different algorithm to reassemble the messages */
+		uint8_t		nextseq[8]; /* the next sequence number we expect to be delivered to upper layer. Can be overwriten if a new epoch is received. */
+		uint8_t		validseq[8]; /* last seq number that was actually decrypted, so we can trust this value. */
+		struct fd_list	chunks;	/* store the chunks with greater seq numbers received on SCTP socket for delayed delivery. */
+		size_t		offset;	/* how much data of the current chunk has already been passed to gnutls */
+	}		cc_sctp_dtls_data;
 
-	/* If both conditions */
+	/* For TLS over SCTP */
 	struct {
 		struct sctp3436_ctx *array; /* an array of cc_sctp_para.pairs elements -- the #0 is special (session is outside)*/
 		struct sr_store	 *sess_store; /* Session data of the master session, to resume the children sessions */
@@ -100,11 +109,12 @@
 void fd_cnx_s_setto(int sock);
 
 /* TLS */
-int fd_tls_rcvthr_core(struct cnxctx * conn, gnutls_session_t session);
+int fd_tls_rcvthr_core(struct cnxctx * conn, gnutls_session_t session, int dtls);
 int fd_tls_prepare(gnutls_session_t * session, int mode, int dtls, char * priority, void * alt_creds);
 #ifndef GNUTLS_VERSION_300
 int fd_tls_verify_credentials(gnutls_session_t session, struct cnxctx * conn, int verbose);
 #endif /* GNUTLS_VERSION_300 */
+ssize_t fd_tls_send_handle_error(struct cnxctx * conn, gnutls_session_t session, void * data, size_t sz);
 
 /* TCP */
 int fd_tcp_create_bind_server( int * sock, sSA * sa, socklen_t salen );
@@ -127,6 +137,8 @@
 /* DTLS over SCTP */
 int fd_sctp_dtls_prepare(gnutls_session_t session);
 int fd_sctp_dtls_settransport(gnutls_session_t session, struct cnxctx * conn);
+int fd_sctp_dtls_send(struct cnxctx * conn, unsigned char * buf, size_t len);
+ssize_t fd_dtls_recv_handle_error(struct cnxctx * conn, gnutls_session_t session, void * data, size_t sz);
 void * fd_sctp_dtls_rcvthr(void * arg);
 
 /* TLS over SCTP (multi-stream) */