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Add option 'mtu' to udp_proxy

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Manuel Pégourié-Gonnard 2014-09-08 11:11:42 +02:00 committed by Paul Bakker
parent 81f2fe9f08
commit eb00bfd9c2
1 changed files with 14 additions and 3 deletions
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17
programs/test/udp_proxy.c
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@ -88,6 +88,8 @@ int main( void )
" delay_ccs=%%d default: 0 (don't delay ChangeCipherSuite)\n" \
" drop=%%d default: 0 (no dropped packets)\n" \
" drop 1 packet every N packets\n" \
" mtu=%%d default: 0 (unlimited)\n" \
" drop packets larger than N bytes\n" \
"\n"
/*
@ -104,6 +106,7 @@ static struct options
int delay; /* delay 1 packet in N (none if 0) */
int delay_ccs; /* delay ChangeCipherSpec */
int drop; /* drop 1 packet in N (none if 0) */
int mtu; /* drop packets larger than this */
} opt;
/*
@ -197,6 +200,12 @@ static void get_options( int argc, char *argv[] )
if( opt.drop < 0 || opt.drop > 10 || opt.drop == 1 )
exit_usage( p, q );
}
else if( strcmp( p, "mtu" ) == 0 )
{
opt.mtu = atoi( q );
if( opt.mtu < 0 || opt.mtu > MAX_MSG_SIZE )
exit_usage( p, q );
}
else
exit_usage( p, NULL );
}
@ -303,9 +312,11 @@ int handle_message( const char *way, int dst, int src )
print_packet( &cur, NULL );
/* do we want to drop, delay, or forward it? */
if( opt.drop != 0 &&
strcmp( cur.type, "ApplicationData" ) != 0 &&
++drop_cnt == opt.drop )
if( ( opt.mtu != 0 &&
cur.len > (unsigned) opt.mtu ) ||
( opt.drop != 0 &&
strcmp( cur.type, "ApplicationData" ) != 0 &&
++drop_cnt == opt.drop ) )
{
drop_cnt = 0;
}