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Always save flight first, (re)send later

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This will allow fragmentation to always happen in the same place, always from
a buffer distinct from ssl->out_msg, and with the same way of resuming after
returning WANT_WRITE
This commit is contained in:
Manuel Pégourié-Gonnard
2017-09-13 12:45:21 +02:00
parent 9c3a8caa92
commit 87a346f64e
4 changed files with 75 additions and 16 deletions
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20
library/ssl_srv.c
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@ -2390,6 +2390,15 @@ static int ssl_write_hello_verify_request( mbedtls_ssl_context *ssl )
return( ret );
}
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_flight_transmit", ret );
return( ret );
}
#endif
MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write hello verify request" ) );
return( 0 );
@ -3369,6 +3378,15 @@ static int ssl_write_server_hello_done( mbedtls_ssl_context *ssl )
return( ret );
}
#if defined(MBEDTLS_SSL_PROTO_DTLS)
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 )
{
MBEDTLS_SSL_DEBUG_RET( 1, "mbedtls_ssl_flight_transmit", ret );
return( ret );
}
#endif
MBEDTLS_SSL_DEBUG_MSG( 2, ( "<= write server hello done" ) );
return( 0 );
@ -4258,7 +4276,7 @@ int mbedtls_ssl_handshake_server_step( mbedtls_ssl_context *ssl )
if( ssl->conf->transport == MBEDTLS_SSL_TRANSPORT_DATAGRAM &&
ssl->handshake->retransmit_state == MBEDTLS_SSL_RETRANS_SENDING )
{
if( ( ret = mbedtls_ssl_resend( ssl ) ) != 0 )
if( ( ret = mbedtls_ssl_flight_transmit( ssl ) ) != 0 )
return( ret );
}
#endif