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-rw-r--r--ssl/dtls1.h52
1 files changed, 49 insertions, 3 deletions
diff --git a/ssl/dtls1.h b/ssl/dtls1.h
index f159d3711026..a8ce51ac3e34 100644
--- a/ssl/dtls1.h
+++ b/ssl/dtls1.h
@@ -62,6 +62,18 @@
#include <openssl/buffer.h>
#include <openssl/pqueue.h>
+#ifdef OPENSSL_SYS_VMS
+#include <resource.h>
+#include <sys/timeb.h>
+#endif
+#ifdef OPENSSL_SYS_WIN32
+/* Needed for struct timeval */
+#include <winsock.h>
+#elif defined(OPENSSL_SYS_NETWARE) && !defined(_WINSOCK2API_)
+#include <sys/timeval.h>
+#else
+#include <sys/time.h>
+#endif
#ifdef __cplusplus
extern "C" {
@@ -76,7 +88,7 @@ extern "C" {
#endif
/* lengths of messages */
-#define DTLS1_COOKIE_LENGTH 32
+#define DTLS1_COOKIE_LENGTH 256
#define DTLS1_RT_HEADER_LENGTH 13
@@ -101,6 +113,19 @@ typedef struct dtls1_bitmap_st
PQ_64BIT max_seq_num; /* max record number seen so far */
} DTLS1_BITMAP;
+struct dtls1_retransmit_state
+ {
+ EVP_CIPHER_CTX *enc_write_ctx; /* cryptographic state */
+ const EVP_MD *write_hash; /* used for mac generation */
+#ifndef OPENSSL_NO_COMP
+ COMP_CTX *compress; /* compression */
+#else
+ char *compress;
+#endif
+ SSL_SESSION *session;
+ unsigned short epoch;
+ };
+
struct hm_header_st
{
unsigned char type;
@@ -109,6 +134,7 @@ struct hm_header_st
unsigned long frag_off;
unsigned long frag_len;
unsigned int is_ccs;
+ struct dtls1_retransmit_state saved_retransmit_state;
};
struct ccs_header_st
@@ -168,6 +194,9 @@ typedef struct dtls1_state_st
unsigned short handshake_read_seq;
+ /* save last sequence number for retransmissions */
+ unsigned char last_write_sequence[8];
+
/* Received handshake records (processed and unprocessed) */
record_pqueue unprocessed_rcds;
record_pqueue processed_rcds;
@@ -178,13 +207,29 @@ typedef struct dtls1_state_st
/* Buffered (sent) handshake records */
pqueue sent_messages;
- unsigned int mtu; /* max wire packet size */
+ /* Buffered application records.
+ * Only for records between CCS and Finished
+ * to prevent either protocol violation or
+ * unnecessary message loss.
+ */
+ record_pqueue buffered_app_data;
+
+ /* Is set when listening for new connections with dtls1_listen() */
+ unsigned int listen;
+
+ unsigned int mtu; /* max DTLS packet size */
struct hm_header_st w_msg_hdr;
struct hm_header_st r_msg_hdr;
struct dtls1_timeout_st timeout;
-
+
+ /* Indicates when the last handshake msg sent will timeout */
+ struct timeval next_timeout;
+
+ /* Timeout duration */
+ unsigned short timeout_duration;
+
/* storage for Alert/Handshake protocol data received but not
* yet processed by ssl3_read_bytes: */
unsigned char alert_fragment[DTLS1_AL_HEADER_LENGTH];
@@ -193,6 +238,7 @@ typedef struct dtls1_state_st
unsigned int handshake_fragment_len;
unsigned int retransmitting;
+ unsigned int change_cipher_spec_ok;
} DTLS1_STATE;