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Move WANT_READ/WANT_WRITE codes to SSL

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This commit is contained in:
Manuel Pégourié-Gonnard 2015-05-06 16:19:31 +01:00
parent 1b511f93c6
commit 8836994f6b
19 changed files with 130 additions and 125 deletions
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16
programs/ssl/dtls_client.c
View file

@ -202,8 +202,8 @@ int main( int argc, char *argv[] )
fflush( stdout );
do ret = mbedtls_ssl_handshake( &ssl );
while( ret == MBEDTLS_ERR_NET_WANT_READ ||
ret == MBEDTLS_ERR_NET_WANT_WRITE );
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE );
if( ret != 0 )
{
@ -252,8 +252,8 @@ send_request:
len = sizeof( MESSAGE ) - 1;
do ret = mbedtls_ssl_write( &ssl, (unsigned char *) MESSAGE, len );
while( ret == MBEDTLS_ERR_NET_WANT_READ ||
ret == MBEDTLS_ERR_NET_WANT_WRITE );
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE );
if( ret < 0 )
{
@ -274,14 +274,14 @@ send_request:
memset( buf, 0, sizeof( buf ) );
do ret = mbedtls_ssl_read( &ssl, buf, len );
while( ret == MBEDTLS_ERR_NET_WANT_READ ||
ret == MBEDTLS_ERR_NET_WANT_WRITE );
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE );
if( ret <= 0 )
{
switch( ret )
{
case MBEDTLS_ERR_NET_TIMEOUT:
case MBEDTLS_ERR_SSL_TIMEOUT:
mbedtls_printf( " timeout\n\n" );
if( retry_left-- > 0 )
goto send_request;
@ -309,7 +309,7 @@ close_notify:
/* No error checking, the connection might be closed already */
do ret = mbedtls_ssl_close_notify( &ssl );
while( ret == MBEDTLS_ERR_NET_WANT_WRITE );
while( ret == MBEDTLS_ERR_SSL_WANT_WRITE );
ret = 0;
mbedtls_printf( " done\n" );

16
programs/ssl/dtls_server.c
View file

@ -291,8 +291,8 @@ reset:
fflush( stdout );
do ret = mbedtls_ssl_handshake( &ssl );
while( ret == MBEDTLS_ERR_NET_WANT_READ ||
ret == MBEDTLS_ERR_NET_WANT_WRITE );
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE );
if( ret == MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED )
{
@ -318,14 +318,14 @@ reset:
memset( buf, 0, sizeof( buf ) );
do ret = mbedtls_ssl_read( &ssl, buf, len );
while( ret == MBEDTLS_ERR_NET_WANT_READ ||
ret == MBEDTLS_ERR_NET_WANT_WRITE );
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE );
if( ret <= 0 )
{
switch( ret )
{
case MBEDTLS_ERR_NET_TIMEOUT:
case MBEDTLS_ERR_SSL_TIMEOUT:
printf( " timeout\n\n" );
goto reset;
@ -350,8 +350,8 @@ reset:
fflush( stdout );
do ret = mbedtls_ssl_write( &ssl, buf, len );
while( ret == MBEDTLS_ERR_NET_WANT_READ ||
ret == MBEDTLS_ERR_NET_WANT_WRITE );
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE );
if( ret < 0 )
{
@ -370,7 +370,7 @@ close_notify:
/* No error checking, the connection might be closed already */
do ret = mbedtls_ssl_close_notify( &ssl );
while( ret == MBEDTLS_ERR_NET_WANT_WRITE );
while( ret == MBEDTLS_ERR_SSL_WANT_WRITE );
ret = 0;
printf( " done\n" );

6
programs/ssl/ssl_client1.c
View file

@ -188,7 +188,7 @@ int main( void )
while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ && ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned -0x%x\n\n", -ret );
goto exit;
@ -226,7 +226,7 @@ int main( void )
while( ( ret = mbedtls_ssl_write( &ssl, buf, len ) ) <= 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ && ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret );
goto exit;
@ -248,7 +248,7 @@ int main( void )
memset( buf, 0, sizeof( buf ) );
ret = mbedtls_ssl_read( &ssl, buf, len );
if( ret == MBEDTLS_ERR_NET_WANT_READ || ret == MBEDTLS_ERR_NET_WANT_WRITE )
if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE )
continue;
if( ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY )

38
programs/ssl/ssl_client2.c
View file

@ -334,11 +334,11 @@ static int my_recv( void *ctx, unsigned char *buf, size_t len )
if( first_try )
{
first_try = 0;
return( MBEDTLS_ERR_NET_WANT_READ );
return( MBEDTLS_ERR_SSL_WANT_READ );
}
ret = mbedtls_net_recv( ctx, buf, len );
if( ret != MBEDTLS_ERR_NET_WANT_READ )
if( ret != MBEDTLS_ERR_SSL_WANT_READ )
first_try = 1; /* Next call will be a new operation */
return( ret );
}
@ -351,11 +351,11 @@ static int my_send( void *ctx, const unsigned char *buf, size_t len )
if( first_try )
{
first_try = 0;
return( MBEDTLS_ERR_NET_WANT_WRITE );
return( MBEDTLS_ERR_SSL_WANT_WRITE );
}
ret = mbedtls_net_send( ctx, buf, len );
if( ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_WRITE )
first_try = 1; /* Next call will be a new operation */
return( ret );
}
@ -1217,7 +1217,7 @@ int main( int argc, char *argv[] )
while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ && ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned -0x%x\n", -ret );
if( ret == MBEDTLS_ERR_X509_CERT_VERIFY_FAILED )
@ -1303,8 +1303,8 @@ int main( int argc, char *argv[] )
fflush( stdout );
while( ( ret = mbedtls_ssl_renegotiate( &ssl ) ) != 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ &&
ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_renegotiate returned %d\n\n", ret );
goto exit;
@ -1355,8 +1355,8 @@ send_request:
while( ( ret = mbedtls_ssl_write( &ssl, buf + written, len - written ) )
<= 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ &&
ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_write returned -0x%x\n\n", -ret );
goto exit;
@ -1367,8 +1367,8 @@ send_request:
else /* Not stream, so datagram */
{
do ret = mbedtls_ssl_write( &ssl, buf, len );
while( ret == MBEDTLS_ERR_NET_WANT_READ ||
ret == MBEDTLS_ERR_NET_WANT_WRITE );
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE );
if( ret < 0 )
{
@ -1400,8 +1400,8 @@ send_request:
memset( buf, 0, sizeof( buf ) );
ret = mbedtls_ssl_read( &ssl, buf, len );
if( ret == MBEDTLS_ERR_NET_WANT_READ ||
ret == MBEDTLS_ERR_NET_WANT_WRITE )
if( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE )
continue;
if( ret <= 0 )
@ -1445,14 +1445,14 @@ send_request:
memset( buf, 0, sizeof( buf ) );
do ret = mbedtls_ssl_read( &ssl, buf, len );
while( ret == MBEDTLS_ERR_NET_WANT_READ ||
ret == MBEDTLS_ERR_NET_WANT_WRITE );
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE );
if( ret <= 0 )
{
switch( ret )
{
case MBEDTLS_ERR_NET_TIMEOUT:
case MBEDTLS_ERR_SSL_TIMEOUT:
mbedtls_printf( " timeout\n" );
if( retry_left-- > 0 )
goto send_request;
@ -1489,7 +1489,7 @@ close_notify:
/* No error checking, the connection might be closed already */
do ret = mbedtls_ssl_close_notify( &ssl );
while( ret == MBEDTLS_ERR_NET_WANT_WRITE );
while( ret == MBEDTLS_ERR_SSL_WANT_WRITE );
ret = 0;
mbedtls_printf( " done\n" );
@ -1545,8 +1545,8 @@ reconnect:
while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ &&
ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned -0x%x\n\n", -ret );
goto exit;

6
programs/ssl/ssl_fork_server.c
View file

@ -284,7 +284,7 @@ int main( void )
while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ && ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned %d\n\n", ret );
goto exit;
@ -305,7 +305,7 @@ int main( void )
memset( buf, 0, sizeof( buf ) );
ret = mbedtls_ssl_read( &ssl, buf, len );
if( ret == MBEDTLS_ERR_NET_WANT_READ || ret == MBEDTLS_ERR_NET_WANT_WRITE )
if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE )
continue;
if( ret <= 0 )
@ -355,7 +355,7 @@ int main( void )
goto exit;
}
if( ret != MBEDTLS_ERR_NET_WANT_READ && ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret );
goto exit;

8
programs/ssl/ssl_mail_client.c
View file

@ -177,7 +177,7 @@ static int do_handshake( mbedtls_ssl_context *ssl )
while( ( ret = mbedtls_ssl_handshake( ssl ) ) != 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ && ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
#if defined(MBEDTLS_ERROR_C)
mbedtls_strerror( ret, (char *) buf, 1024 );
@ -224,7 +224,7 @@ static int write_ssl_data( mbedtls_ssl_context *ssl, unsigned char *buf, size_t
mbedtls_printf("\n%s", buf);
while( len && ( ret = mbedtls_ssl_write( ssl, buf, len ) ) <= 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ && ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret );
return -1;
@ -244,7 +244,7 @@ static int write_ssl_and_get_response( mbedtls_ssl_context *ssl, unsigned char *
mbedtls_printf("\n%s", buf);
while( len && ( ret = mbedtls_ssl_write( ssl, buf, len ) ) <= 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ && ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret );
return -1;
@ -257,7 +257,7 @@ static int write_ssl_and_get_response( mbedtls_ssl_context *ssl, unsigned char *
memset( data, 0, sizeof( data ) );
ret = mbedtls_ssl_read( ssl, data, len );
if( ret == MBEDTLS_ERR_NET_WANT_READ || ret == MBEDTLS_ERR_NET_WANT_WRITE )
if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE )
continue;
if( ret == MBEDTLS_ERR_SSL_PEER_CLOSE_NOTIFY )

10
programs/ssl/ssl_pthread_server.c
View file

@ -208,7 +208,7 @@ static void *handle_ssl_connection( void *data )
while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ && ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " [ #%d ] failed: mbedtls_ssl_handshake returned -0x%04x\n",
thread_id, -ret );
@ -229,7 +229,7 @@ static void *handle_ssl_connection( void *data )
memset( buf, 0, sizeof( buf ) );
ret = mbedtls_ssl_read( &ssl, buf, len );
if( ret == MBEDTLS_ERR_NET_WANT_READ || ret == MBEDTLS_ERR_NET_WANT_WRITE )
if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE )
continue;
if( ret <= 0 )
@ -279,7 +279,7 @@ static void *handle_ssl_connection( void *data )
goto thread_exit;
}
if( ret != MBEDTLS_ERR_NET_WANT_READ && ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " [ #%d ] failed: mbedtls_ssl_write returned -0x%04x\n",
thread_id, ret );
@ -295,8 +295,8 @@ static void *handle_ssl_connection( void *data )
while( ( ret = mbedtls_ssl_close_notify( &ssl ) ) < 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ &&
ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " [ #%d ] failed: mbedtls_ssl_close_notify returned -0x%04x\n",
thread_id, ret );

10
programs/ssl/ssl_server.c
View file

@ -264,7 +264,7 @@ reset:
while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ && ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned %d\n\n", ret );
goto reset;
@ -285,7 +285,7 @@ reset:
memset( buf, 0, sizeof( buf ) );
ret = mbedtls_ssl_read( &ssl, buf, len );
if( ret == MBEDTLS_ERR_NET_WANT_READ || ret == MBEDTLS_ERR_NET_WANT_WRITE )
if( ret == MBEDTLS_ERR_SSL_WANT_READ || ret == MBEDTLS_ERR_SSL_WANT_WRITE )
continue;
if( ret <= 0 )
@ -333,7 +333,7 @@ reset:
goto reset;
}
if( ret != MBEDTLS_ERR_NET_WANT_READ && ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret );
goto exit;
@ -347,8 +347,8 @@ reset:
while( ( ret = mbedtls_ssl_close_notify( &ssl ) ) < 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ &&
ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_close_notify returned %d\n\n", ret );
goto reset;

34
programs/ssl/ssl_server2.c
View file

@ -409,11 +409,11 @@ static int my_recv( void *ctx, unsigned char *buf, size_t len )
if( first_try )
{
first_try = 0;
return( MBEDTLS_ERR_NET_WANT_READ );
return( MBEDTLS_ERR_SSL_WANT_READ );
}
ret = mbedtls_net_recv( ctx, buf, len );
if( ret != MBEDTLS_ERR_NET_WANT_READ )
if( ret != MBEDTLS_ERR_SSL_WANT_READ )
first_try = 1; /* Next call will be a new operation */
return( ret );
}
@ -426,11 +426,11 @@ static int my_send( void *ctx, const unsigned char *buf, size_t len )
if( first_try )
{
first_try = 0;
return( MBEDTLS_ERR_NET_WANT_WRITE );
return( MBEDTLS_ERR_SSL_WANT_WRITE );
}
ret = mbedtls_net_send( ctx, buf, len );
if( ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_WRITE )
first_try = 1; /* Next call will be a new operation */
return( ret );
}
@ -1874,8 +1874,8 @@ reset:
fflush( stdout );
do ret = mbedtls_ssl_handshake( &ssl );
while( ret == MBEDTLS_ERR_NET_WANT_READ ||
ret == MBEDTLS_ERR_NET_WANT_WRITE );
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE );
if( ret == MBEDTLS_ERR_SSL_HELLO_VERIFY_REQUIRED )
{
@ -1959,8 +1959,8 @@ data_exchange:
memset( buf, 0, sizeof( buf ) );
ret = mbedtls_ssl_read( &ssl, buf, len );
if( ret == MBEDTLS_ERR_NET_WANT_READ ||
ret == MBEDTLS_ERR_NET_WANT_WRITE )
if( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE )
continue;
if( ret <= 0 )
@ -2050,8 +2050,8 @@ data_exchange:
memset( buf, 0, sizeof( buf ) );
do ret = mbedtls_ssl_read( &ssl, buf, len );
while( ret == MBEDTLS_ERR_NET_WANT_READ ||
ret == MBEDTLS_ERR_NET_WANT_WRITE );
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE );
if( ret <= 0 )
{
@ -2086,8 +2086,8 @@ data_exchange:
while( ( ret = mbedtls_ssl_renegotiate( &ssl ) ) != 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ &&
ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_renegotiate returned %d\n\n", ret );
goto reset;
@ -2120,8 +2120,8 @@ data_exchange:
goto reset;
}
if( ret != MBEDTLS_ERR_NET_WANT_READ &&
ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ &&
ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_write returned %d\n\n", ret );
goto reset;
@ -2132,8 +2132,8 @@ data_exchange:
else /* Not stream, so datagram */
{
do ret = mbedtls_ssl_write( &ssl, buf, len );
while( ret == MBEDTLS_ERR_NET_WANT_READ ||
ret == MBEDTLS_ERR_NET_WANT_WRITE );
while( ret == MBEDTLS_ERR_SSL_WANT_READ ||
ret == MBEDTLS_ERR_SSL_WANT_WRITE );
if( ret < 0 )
{
@ -2163,7 +2163,7 @@ close_notify:
/* No error checking, the connection might be closed already */
do ret = mbedtls_ssl_close_notify( &ssl );
while( ret == MBEDTLS_ERR_NET_WANT_WRITE );
while( ret == MBEDTLS_ERR_SSL_WANT_WRITE );
ret = 0;
mbedtls_printf( " done\n" );

2
programs/x509/cert_app.c
View file

@ -440,7 +440,7 @@ int main( int argc, char *argv[] )
*/
while( ( ret = mbedtls_ssl_handshake( &ssl ) ) != 0 )
{
if( ret != MBEDTLS_ERR_NET_WANT_READ && ret != MBEDTLS_ERR_NET_WANT_WRITE )
if( ret != MBEDTLS_ERR_SSL_WANT_READ && ret != MBEDTLS_ERR_SSL_WANT_WRITE )
{
mbedtls_printf( " failed\n ! mbedtls_ssl_handshake returned %d\n\n", ret );
goto ssl_exit;