diff --git a/library/ssl_misc.h b/library/ssl_misc.h
index 2afcaf97f8..6ce8668fa8 100644
--- a/library/ssl_misc.h
+++ b/library/ssl_misc.h
@@ -1333,12 +1333,18 @@ int mbedtls_ssl_handshake_client_step(mbedtls_ssl_context *ssl);
 MBEDTLS_CHECK_RETURN_CRITICAL
 int mbedtls_ssl_handshake_server_step(mbedtls_ssl_context *ssl);
 void mbedtls_ssl_handshake_wrapup(mbedtls_ssl_context *ssl);
+
 static inline void mbedtls_ssl_handshake_set_state(mbedtls_ssl_context *ssl,
                                                    mbedtls_ssl_states state)
 {
     ssl->state = (int) state;
 }
 
+static inline void mbedtls_ssl_handshake_increment_state(mbedtls_ssl_context *ssl)
+{
+    mbedtls_ssl_handshake_set_state(ssl, ssl->state + 1);
+}
+
 MBEDTLS_CHECK_RETURN_CRITICAL
 int mbedtls_ssl_send_fatal_handshake_failure(mbedtls_ssl_context *ssl);
 
diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index 4adaf7dc6f..2bea15412d 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -5318,7 +5318,7 @@ int mbedtls_ssl_write_change_cipher_spec(mbedtls_ssl_context *ssl)
     ssl->out_msglen  = 1;
     ssl->out_msg[0]  = 1;
 
-    ssl->state++;
+    mbedtls_ssl_handshake_increment_state(ssl);
 
     if ((ret = mbedtls_ssl_write_handshake_msg(ssl)) != 0) {
         MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_write_handshake_msg", ret);
@@ -5380,7 +5380,7 @@ int mbedtls_ssl_parse_change_cipher_spec(mbedtls_ssl_context *ssl)
 
     mbedtls_ssl_update_in_pointers(ssl);
 
-    ssl->state++;
+    mbedtls_ssl_handshake_increment_state(ssl);
 
     MBEDTLS_SSL_DEBUG_MSG(2, ("<= parse change cipher spec"));
 
diff --git a/library/ssl_tls.c b/library/ssl_tls.c
index 3633cd40f9..8d451778d9 100644
--- a/library/ssl_tls.c
+++ b/library/ssl_tls.c
@@ -1554,7 +1554,7 @@ int mbedtls_ssl_session_reset_int(mbedtls_ssl_context *ssl, int partial)
 {
     int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED;
 
-    ssl->state = MBEDTLS_SSL_HELLO_REQUEST;
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_HELLO_REQUEST);
     ssl->tls_version = ssl->conf->max_tls_version;
 
     mbedtls_ssl_session_reset_msg_layer(ssl, partial);
@@ -4587,7 +4587,7 @@ int mbedtls_ssl_handshake_step(mbedtls_ssl_context *ssl)
 
         switch (ssl->state) {
             case MBEDTLS_SSL_HELLO_REQUEST:
-                ssl->state = MBEDTLS_SSL_CLIENT_HELLO;
+                mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CLIENT_HELLO);
                 ret = 0;
                 break;
 
@@ -4738,7 +4738,7 @@ int mbedtls_ssl_start_renegotiation(mbedtls_ssl_context *ssl)
     }
 #endif
 
-    ssl->state = MBEDTLS_SSL_HELLO_REQUEST;
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_HELLO_REQUEST);
     ssl->renego_status = MBEDTLS_SSL_RENEGOTIATION_IN_PROGRESS;
 
     if ((ret = mbedtls_ssl_handshake(ssl)) != 0) {
@@ -5521,7 +5521,7 @@ static int ssl_context_load(mbedtls_ssl_context *ssl,
      * Most of them already set to the correct value by mbedtls_ssl_init() and
      * mbedtls_ssl_reset(), so we only need to set the remaining ones.
      */
-    ssl->state = MBEDTLS_SSL_HANDSHAKE_OVER;
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_HANDSHAKE_OVER);
     ssl->tls_version = MBEDTLS_SSL_VERSION_TLS1_2;
 
     /* Adjust pointers for header fields of outgoing records to
@@ -7576,7 +7576,7 @@ int mbedtls_ssl_write_certificate(mbedtls_ssl_context *ssl)
 
     if (!mbedtls_ssl_ciphersuite_uses_srv_cert(ciphersuite_info)) {
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip write certificate"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
 
@@ -7593,7 +7593,7 @@ int mbedtls_ssl_parse_certificate(mbedtls_ssl_context *ssl)
 
     if (!mbedtls_ssl_ciphersuite_uses_srv_cert(ciphersuite_info)) {
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip parse certificate"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
 
@@ -7616,7 +7616,7 @@ int mbedtls_ssl_write_certificate(mbedtls_ssl_context *ssl)
 
     if (!mbedtls_ssl_ciphersuite_uses_srv_cert(ciphersuite_info)) {
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip write certificate"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
 
@@ -7624,7 +7624,7 @@ int mbedtls_ssl_write_certificate(mbedtls_ssl_context *ssl)
     if (ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT) {
         if (ssl->handshake->client_auth == 0) {
             MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip write certificate"));
-            ssl->state++;
+            mbedtls_ssl_handshake_increment_state(ssl);
             return 0;
         }
     }
@@ -7678,7 +7678,7 @@ int mbedtls_ssl_write_certificate(mbedtls_ssl_context *ssl)
     ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
     ssl->out_msg[0]  = MBEDTLS_SSL_HS_CERTIFICATE;
 
-    ssl->state++;
+    mbedtls_ssl_handshake_increment_state(ssl);
 
     if ((ret = mbedtls_ssl_write_handshake_msg(ssl)) != 0) {
         MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_write_handshake_msg", ret);
@@ -8136,7 +8136,7 @@ crt_verify:
 exit:
 
     if (ret == 0) {
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
     }
 
 #if defined(MBEDTLS_SSL_ECP_RESTARTABLE_ENABLED)
@@ -8352,7 +8352,7 @@ void mbedtls_ssl_handshake_wrapup(mbedtls_ssl_context *ssl)
 #endif
     mbedtls_ssl_handshake_wrapup_free_hs_transform(ssl);
 
-    ssl->state = MBEDTLS_SSL_HANDSHAKE_OVER;
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_HANDSHAKE_OVER);
 
     MBEDTLS_SSL_DEBUG_MSG(3, ("<= handshake wrapup"));
 }
@@ -8396,16 +8396,16 @@ int mbedtls_ssl_write_finished(mbedtls_ssl_context *ssl)
     if (ssl->handshake->resume != 0) {
 #if defined(MBEDTLS_SSL_CLI_C)
         if (ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT) {
-            ssl->state = MBEDTLS_SSL_HANDSHAKE_WRAPUP;
+            mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_HANDSHAKE_WRAPUP);
         }
 #endif
 #if defined(MBEDTLS_SSL_SRV_C)
         if (ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER) {
-            ssl->state = MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC;
+            mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC);
         }
 #endif
     } else {
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
     }
 
     /*
@@ -8531,16 +8531,16 @@ int mbedtls_ssl_parse_finished(mbedtls_ssl_context *ssl)
     if (ssl->handshake->resume != 0) {
 #if defined(MBEDTLS_SSL_CLI_C)
         if (ssl->conf->endpoint == MBEDTLS_SSL_IS_CLIENT) {
-            ssl->state = MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC;
+            mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CLIENT_CHANGE_CIPHER_SPEC);
         }
 #endif
 #if defined(MBEDTLS_SSL_SRV_C)
         if (ssl->conf->endpoint == MBEDTLS_SSL_IS_SERVER) {
-            ssl->state = MBEDTLS_SSL_HANDSHAKE_WRAPUP;
+            mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_HANDSHAKE_WRAPUP);
         }
 #endif
     } else {
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
     }
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
diff --git a/library/ssl_tls12_client.c b/library/ssl_tls12_client.c
index 75783d08f1..791b84ee39 100644
--- a/library/ssl_tls12_client.c
+++ b/library/ssl_tls12_client.c
@@ -1163,7 +1163,7 @@ static int ssl_parse_hello_verify_request(mbedtls_ssl_context *ssl)
     ssl->handshake->cookie_len = cookie_len;
 
     /* Start over at ClientHello */
-    ssl->state = MBEDTLS_SSL_CLIENT_HELLO;
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CLIENT_HELLO);
     ret = mbedtls_ssl_reset_checksum(ssl);
     if (0 != ret) {
         MBEDTLS_SSL_DEBUG_RET(1, ("mbedtls_ssl_reset_checksum"), ret);
@@ -1372,7 +1372,7 @@ static int ssl_parse_server_hello(mbedtls_ssl_context *ssl)
         ssl->session_negotiate->ciphersuite != i ||
         ssl->session_negotiate->id_len != n ||
         memcmp(ssl->session_negotiate->id, buf + 35, n) != 0) {
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         ssl->handshake->resume = 0;
 #if defined(MBEDTLS_HAVE_TIME)
         ssl->session_negotiate->start = mbedtls_time(NULL);
@@ -1381,7 +1381,7 @@ static int ssl_parse_server_hello(mbedtls_ssl_context *ssl)
         ssl->session_negotiate->id_len = n;
         memcpy(ssl->session_negotiate->id, buf + 35, n);
     } else {
-        ssl->state = MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC;
+        mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC);
     }
 
     MBEDTLS_SSL_DEBUG_MSG(3, ("%s session has been resumed",
@@ -2091,7 +2091,7 @@ static int ssl_parse_server_key_exchange(mbedtls_ssl_context *ssl)
 #if defined(MBEDTLS_KEY_EXCHANGE_RSA_ENABLED)
     if (ciphersuite_info->key_exchange == MBEDTLS_KEY_EXCHANGE_RSA) {
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip parse server key exchange"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
     ((void) p);
@@ -2112,7 +2112,7 @@ static int ssl_parse_server_key_exchange(mbedtls_ssl_context *ssl)
         }
 
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip parse server key exchange"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
     ((void) p);
@@ -2454,7 +2454,7 @@ start_processing:
 #endif /* MBEDTLS_KEY_EXCHANGE_WITH_SERVER_SIGNATURE_ENABLED */
 
 exit:
-    ssl->state++;
+    mbedtls_ssl_handshake_increment_state(ssl);
 
     MBEDTLS_SSL_DEBUG_MSG(2, ("<= parse server key exchange"));
 
@@ -2472,7 +2472,7 @@ static int ssl_parse_certificate_request(mbedtls_ssl_context *ssl)
 
     if (!mbedtls_ssl_ciphersuite_cert_req_allowed(ciphersuite_info)) {
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip parse certificate request"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
 
@@ -2499,7 +2499,7 @@ static int ssl_parse_certificate_request(mbedtls_ssl_context *ssl)
 
     if (!mbedtls_ssl_ciphersuite_cert_req_allowed(ciphersuite_info)) {
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip parse certificate request"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
 
@@ -2517,7 +2517,7 @@ static int ssl_parse_certificate_request(mbedtls_ssl_context *ssl)
         return MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE;
     }
 
-    ssl->state++;
+    mbedtls_ssl_handshake_increment_state(ssl);
     ssl->handshake->client_auth =
         (ssl->in_msg[0] == MBEDTLS_SSL_HS_CERTIFICATE_REQUEST);
 
@@ -2688,7 +2688,7 @@ static int ssl_parse_server_hello_done(mbedtls_ssl_context *ssl)
         return MBEDTLS_ERR_SSL_DECODE_ERROR;
     }
 
-    ssl->state++;
+    mbedtls_ssl_handshake_increment_state(ssl);
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
     if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
@@ -3199,7 +3199,7 @@ ecdh_calc_secret:
     ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
     ssl->out_msg[0]  = MBEDTLS_SSL_HS_CLIENT_KEY_EXCHANGE;
 
-    ssl->state++;
+    mbedtls_ssl_handshake_increment_state(ssl);
 
     if ((ret = mbedtls_ssl_write_handshake_msg(ssl)) != 0) {
         MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_write_handshake_msg", ret);
@@ -3228,7 +3228,7 @@ static int ssl_write_certificate_verify(mbedtls_ssl_context *ssl)
 
     if (!mbedtls_ssl_ciphersuite_cert_req_allowed(ciphersuite_info)) {
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip write certificate verify"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
 
@@ -3270,14 +3270,14 @@ static int ssl_write_certificate_verify(mbedtls_ssl_context *ssl)
 
     if (!mbedtls_ssl_ciphersuite_cert_req_allowed(ciphersuite_info)) {
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip write certificate verify"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
 
     if (ssl->handshake->client_auth == 0 ||
         mbedtls_ssl_own_cert(ssl) == NULL) {
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip write certificate verify"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
 
@@ -3359,7 +3359,7 @@ sign:
     ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
     ssl->out_msg[0]  = MBEDTLS_SSL_HS_CERTIFICATE_VERIFY;
 
-    ssl->state++;
+    mbedtls_ssl_handshake_increment_state(ssl);
 
     if ((ret = mbedtls_ssl_write_handshake_msg(ssl)) != 0) {
         MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_write_handshake_msg", ret);
@@ -3433,7 +3433,7 @@ static int ssl_parse_new_session_ticket(mbedtls_ssl_context *ssl)
 
     /* We're not waiting for a NewSessionTicket message any more */
     ssl->handshake->new_session_ticket = 0;
-    ssl->state = MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC;
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC);
 
     /*
      * Zero-length ticket means the server changed his mind and doesn't want
@@ -3494,13 +3494,13 @@ int mbedtls_ssl_handshake_client_step(mbedtls_ssl_context *ssl)
 #if defined(MBEDTLS_SSL_SESSION_TICKETS)
     if (ssl->state == MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC &&
         ssl->handshake->new_session_ticket != 0) {
-        ssl->state = MBEDTLS_SSL_NEW_SESSION_TICKET;
+        mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_NEW_SESSION_TICKET);
     }
 #endif
 
     switch (ssl->state) {
         case MBEDTLS_SSL_HELLO_REQUEST:
-            ssl->state = MBEDTLS_SSL_CLIENT_HELLO;
+            mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CLIENT_HELLO);
             break;
 
         /*
@@ -3585,7 +3585,7 @@ int mbedtls_ssl_handshake_client_step(mbedtls_ssl_context *ssl)
 
         case MBEDTLS_SSL_FLUSH_BUFFERS:
             MBEDTLS_SSL_DEBUG_MSG(2, ("handshake: done"));
-            ssl->state = MBEDTLS_SSL_HANDSHAKE_WRAPUP;
+            mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_HANDSHAKE_WRAPUP);
             break;
 
         case MBEDTLS_SSL_HANDSHAKE_WRAPUP:
diff --git a/library/ssl_tls12_server.c b/library/ssl_tls12_server.c
index 67df4284a4..2d73855ee1 100644
--- a/library/ssl_tls12_server.c
+++ b/library/ssl_tls12_server.c
@@ -1636,7 +1636,7 @@ have_ciphersuite:
     ssl->session_negotiate->ciphersuite = ciphersuites[i];
     ssl->handshake->ciphersuite_info = ciphersuite_info;
 
-    ssl->state++;
+    mbedtls_ssl_handshake_increment_state(ssl);
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
     if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
@@ -2064,7 +2064,7 @@ static int ssl_write_hello_verify_request(mbedtls_ssl_context *ssl)
     ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
     ssl->out_msg[0]  = MBEDTLS_SSL_HS_HELLO_VERIFY_REQUEST;
 
-    ssl->state = MBEDTLS_SSL_SERVER_HELLO_VERIFY_REQUEST_SENT;
+    mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_SERVER_HELLO_VERIFY_REQUEST_SENT);
 
     if ((ret = mbedtls_ssl_write_handshake_msg(ssl)) != 0) {
         MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_write_handshake_msg", ret);
@@ -2232,7 +2232,7 @@ static int ssl_write_server_hello(mbedtls_ssl_context *ssl)
          * New session, create a new session id,
          * unless we're about to issue a session ticket
          */
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
 
 #if defined(MBEDTLS_HAVE_TIME)
         ssl->session_negotiate->start = mbedtls_time(NULL);
@@ -2256,7 +2256,7 @@ static int ssl_write_server_hello(mbedtls_ssl_context *ssl)
          * Resuming a session
          */
         n = ssl->session_negotiate->id_len;
-        ssl->state = MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC;
+        mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_SERVER_CHANGE_CIPHER_SPEC);
 
         if ((ret = mbedtls_ssl_derive_keys(ssl)) != 0) {
             MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_derive_keys", ret);
@@ -2382,7 +2382,7 @@ static int ssl_write_certificate_request(mbedtls_ssl_context *ssl)
 
     if (!mbedtls_ssl_ciphersuite_cert_req_allowed(ciphersuite_info)) {
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip write certificate request"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
 
@@ -2405,7 +2405,7 @@ static int ssl_write_certificate_request(mbedtls_ssl_context *ssl)
 
     MBEDTLS_SSL_DEBUG_MSG(2, ("=> write certificate request"));
 
-    ssl->state++;
+    mbedtls_ssl_handshake_increment_state(ssl);
 
 #if defined(MBEDTLS_SSL_SERVER_NAME_INDICATION)
     if (ssl->handshake->sni_authmode != MBEDTLS_SSL_VERIFY_UNSET) {
@@ -3252,7 +3252,7 @@ static int ssl_write_server_key_exchange(mbedtls_ssl_context *ssl)
         /* Key exchanges not involving ephemeral keys don't use
          * ServerKeyExchange, so end here. */
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip write server key exchange"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
 #endif /* MBEDTLS_KEY_EXCHANGE_SOME_NON_PFS_ENABLED */
@@ -3306,7 +3306,7 @@ static int ssl_write_server_key_exchange(mbedtls_ssl_context *ssl)
     ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
     ssl->out_msg[0]  = MBEDTLS_SSL_HS_SERVER_KEY_EXCHANGE;
 
-    ssl->state++;
+    mbedtls_ssl_handshake_increment_state(ssl);
 
     if ((ret = mbedtls_ssl_write_handshake_msg(ssl)) != 0) {
         MBEDTLS_SSL_DEBUG_RET(1, "mbedtls_ssl_write_handshake_msg", ret);
@@ -3328,7 +3328,7 @@ static int ssl_write_server_hello_done(mbedtls_ssl_context *ssl)
     ssl->out_msgtype = MBEDTLS_SSL_MSG_HANDSHAKE;
     ssl->out_msg[0]  = MBEDTLS_SSL_HS_SERVER_HELLO_DONE;
 
-    ssl->state++;
+    mbedtls_ssl_handshake_increment_state(ssl);
 
 #if defined(MBEDTLS_SSL_PROTO_DTLS)
     if (ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM) {
@@ -4052,7 +4052,7 @@ static int ssl_parse_client_key_exchange(mbedtls_ssl_context *ssl)
         return ret;
     }
 
-    ssl->state++;
+    mbedtls_ssl_handshake_increment_state(ssl);
 
     MBEDTLS_SSL_DEBUG_MSG(2, ("<= parse client key exchange"));
 
@@ -4070,7 +4070,7 @@ static int ssl_parse_certificate_verify(mbedtls_ssl_context *ssl)
 
     if (!mbedtls_ssl_ciphersuite_cert_req_allowed(ciphersuite_info)) {
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip parse certificate verify"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
 
@@ -4096,20 +4096,20 @@ static int ssl_parse_certificate_verify(mbedtls_ssl_context *ssl)
 
     if (!mbedtls_ssl_ciphersuite_cert_req_allowed(ciphersuite_info)) {
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip parse certificate verify"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
 
 #if defined(MBEDTLS_SSL_KEEP_PEER_CERTIFICATE)
     if (ssl->session_negotiate->peer_cert == NULL) {
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip parse certificate verify"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
 #else /* MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
     if (ssl->session_negotiate->peer_cert_digest == NULL) {
         MBEDTLS_SSL_DEBUG_MSG(2, ("<= skip parse certificate verify"));
-        ssl->state++;
+        mbedtls_ssl_handshake_increment_state(ssl);
         return 0;
     }
 #endif /* !MBEDTLS_SSL_KEEP_PEER_CERTIFICATE */
@@ -4121,7 +4121,7 @@ static int ssl_parse_certificate_verify(mbedtls_ssl_context *ssl)
         return ret;
     }
 
-    ssl->state++;
+    mbedtls_ssl_handshake_increment_state(ssl);
 
     /* Process the message contents */
     if (ssl->in_msgtype != MBEDTLS_SSL_MSG_HANDSHAKE ||
@@ -4305,7 +4305,7 @@ int mbedtls_ssl_handshake_server_step(mbedtls_ssl_context *ssl)
 
     switch (ssl->state) {
         case MBEDTLS_SSL_HELLO_REQUEST:
-            ssl->state = MBEDTLS_SSL_CLIENT_HELLO;
+            mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_CLIENT_HELLO);
             break;
 
         /*
@@ -4394,7 +4394,7 @@ int mbedtls_ssl_handshake_server_step(mbedtls_ssl_context *ssl)
 
         case MBEDTLS_SSL_FLUSH_BUFFERS:
             MBEDTLS_SSL_DEBUG_MSG(2, ("handshake: done"));
-            ssl->state = MBEDTLS_SSL_HANDSHAKE_WRAPUP;
+            mbedtls_ssl_handshake_set_state(ssl, MBEDTLS_SSL_HANDSHAKE_WRAPUP);
             break;
 
         case MBEDTLS_SSL_HANDSHAKE_WRAPUP: