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add init_random_number_fd

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wangyu
2017-07-21 17:17:44 +08:00
committed by wangyu
parent 047af63801
commit 1725aa8161
2 changed files with 15 additions and 4 deletions
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17
main.cpp
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@@ -158,11 +158,21 @@ uint8_t key[]={1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16, 0,0,0,0};
const int window_size=2000;
int random_number_fd=-1;
void init_random_number_fd()
{
random_number_fd=open("/dev/urandom",O_RDONLY);
if(random_number_fd==-1)
{
printf("error open /dev/urandom");
exit(-1);
}
}
uint32_t get_true_random_number()
{
uint32_t ret;
int fd=open("/dev/urandom",O_RDONLY);
read(fd,&ret,sizeof(ret));
read(random_number_fd,&ret,sizeof(ret));
return htonl(ret);
}
struct anti_replay_t
@@ -986,7 +996,7 @@ int fake_tcp_keep_connection_client() //for client
client_current_state=client_syn_sent;
last_state_time=get_current_time();
printf("state changed from nothing to syn_sent\n");
retry_counter=5;
retry_counter=RETRY_TIME;
g_packet_info.src_port=client_bind_to_a_new_port();
printf("using port %d\n",g_packet_info.src_port);
@@ -2061,6 +2071,7 @@ int server()
int main(int argc, char *argv[])
{
init_random_number_fd();
const_id=get_true_random_number();
g_packet_info.ack_seq=get_true_random_number();