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Count timeout per flight, not per message

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Manuel Pégourié-Gonnard 2014-09-29 15:29:48 +02:00 committed by Paul Bakker
parent db2858ce96
commit 7de3c9eecb
4 changed files with 49 additions and 9 deletions
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9
include/polarssl/ssl.h
View File

@ -253,12 +253,8 @@
/*
* DTLS retransmission states, see RFC 6347 4.2.4
*
* Warning: the state is sometimes explicit sometimes implicit!
* - PREPARING is explicit (but could be implicit from ssl->state)
* - SENDING is merged in PREPARING for initial sends, explicit for resends
* - WAITING is usually implicit from ssl->state, except after resend
* - FINISHED is explicit (but could be implicit from state)
* TODO-DTLS: clean that up
* The SENDING state is merged in PREPARING for initial sends,
* but is distinct for resends.
*/
#define SSL_RETRANS_PREPARING 0
#define SSL_RETRANS_SENDING 1
@ -2082,6 +2078,7 @@ static inline size_t ssl_hs_hdr_len( const ssl_context *ssl )
}
#if defined(POLARSSL_SSL_PROTO_DTLS)
void ssl_send_flight_completed( ssl_context *ssl );
void ssl_recv_flight_completed( ssl_context *ssl );
int ssl_resend( ssl_context *ssl );
#endif

5
library/ssl_cli.c
View File

@ -759,6 +759,11 @@ static int ssl_write_client_hello( ssl_context *ssl )
ssl->state++;
#if defined(POLARSSL_SSL_PROTO_DTLS)
if( ssl->transport == SSL_TRANSPORT_DATAGRAM )
ssl_send_flight_completed( ssl );
#endif
if( ( ret = ssl_write_record( ssl ) ) != 0 )
{
SSL_DEBUG_RET( 1, "ssl_write_record", ret );

5
library/ssl_srv.c
View File

@ -2831,6 +2831,11 @@ static int ssl_write_server_hello_done( ssl_context *ssl )
ssl->state++;
#if defined(POLARSSL_SSL_PROTO_DTLS)
if( ssl->transport == SSL_TRANSPORT_DATAGRAM )
ssl_send_flight_completed( ssl );
#endif
if( ( ret = ssl_write_record( ssl ) ) != 0 )
{
SSL_DEBUG_RET( 1, "ssl_write_record", ret );

39
library/ssl_tls.c
View File

@ -1961,12 +1961,14 @@ int ssl_fetch_input( ssl_context *ssl, size_t nb_want )
else
ret = ssl->f_recv( ssl->p_bio, ssl->in_hdr, len );
SSL_DEBUG_RET( 2, "ssl->f_recv", ret );
SSL_DEBUG_RET( 2, "ssl->f_recv(_timeout)", ret );
if( ret == 0 )
return( POLARSSL_ERR_SSL_CONN_EOF );
if( ret == POLARSSL_ERR_NET_TIMEOUT )
if( ret == POLARSSL_ERR_NET_TIMEOUT ||
( ret == POLARSSL_ERR_NET_WANT_READ &&
ssl_check_timer( ssl ) != 0 ) )
{
SSL_DEBUG_MSG( 2, ( "recv timeout" ) );
@ -2206,6 +2208,9 @@ int ssl_resend( ssl_context *ssl )
ssl_swap_epochs( ssl );
ssl->handshake->retransmit_state = SSL_RETRANS_SENDING;
/* Cancel running timer */
ssl_set_timer( ssl, 0 );
}
while( ssl->handshake->cur_msg != NULL )
@ -2242,6 +2247,9 @@ int ssl_resend( ssl_context *ssl )
else
ssl->handshake->retransmit_state = SSL_RETRANS_WAITING;
/* WIP: hardcoded 1 sec will be replaced */
ssl_set_timer( ssl, 1000 );
SSL_DEBUG_MSG( 2, ( "<= ssl_resend" ) );
return( 0 );
@ -2260,6 +2268,9 @@ void ssl_recv_flight_completed( ssl_context *ssl )
/* The next incoming flight will start with this msg_seq */
ssl->handshake->in_flight_start_seq = ssl->handshake->in_msg_seq;
/* Cancel timer */
ssl_set_timer( ssl, 0 );
if( ssl->in_msgtype == SSL_MSG_HANDSHAKE &&
ssl->in_msg[0] == SSL_HS_FINISHED )
{
@ -2268,6 +2279,23 @@ void ssl_recv_flight_completed( ssl_context *ssl )
else
ssl->handshake->retransmit_state = SSL_RETRANS_PREPARING;
}
/*
* To be called when the last message of an outgoing flight is send.
*/
void ssl_send_flight_completed( ssl_context *ssl )
{
/* WIP: hardcoded 1 sec is temporary */
ssl_set_timer( ssl, 1000 );
if( ssl->in_msgtype == SSL_MSG_HANDSHAKE &&
ssl->in_msg[0] == SSL_HS_FINISHED )
{
ssl->handshake->retransmit_state = SSL_RETRANS_FINISHED;
}
else
ssl->handshake->retransmit_state = SSL_RETRANS_WAITING;
}
#endif /* POLARSSL_SSL_PROTO_DTLS */
/*
@ -3152,7 +3180,7 @@ read_record_header:
#if defined(POLARSSL_SSL_PROTO_DTLS)
if( ssl->transport == SSL_TRANSPORT_DATAGRAM &&
ssl->handshake != NULL &&
ssl->handshake->retransmit_state == SSL_RETRANS_FINISHED )
ssl->state == SSL_HANDSHAKE_OVER )
{
if( ssl->in_msgtype == SSL_MSG_HANDSHAKE &&
ssl->in_msg[0] == SSL_HS_FINISHED )
@ -4263,6 +4291,11 @@ int ssl_write_finished( ssl_context *ssl )
}
#endif
#if defined(POLARSSL_SSL_PROTO_DTLS)
if( ssl->transport == SSL_TRANSPORT_DATAGRAM )
ssl_send_flight_completed( ssl );
#endif
if( ( ret = ssl_write_record( ssl ) ) != 0 )
{
SSL_DEBUG_RET( 1, "ssl_write_record", ret );