void print_friendlist()
{
uint32_t i, j, k;
IP_Port p_ip;
printf("_________________FRIENDS__________________________________\n");
for(k = 0; k < num_friends; k++)
{
printf("FRIEND %u\n", k);
printf("ID: ");
for(j = 0; j < 32; j++)
{
printf("%c", friends_list[k].client_id[j]);
}
p_ip = getfriendip(friends_list[k].client_id);
printf("\nIP: %u.%u.%u.%u:%u",p_ip.ip.c[0],p_ip.ip.c[1],p_ip.ip.c[2],p_ip.ip.c[3],ntohs(p_ip.port));
printf("\nCLIENTS IN LIST:\n\n");
for(i = 0; i < 4; i++)
{
printf("ClientID: ");
for(j = 0; j < 32; j++)
{
if(0 <= friends_list[k].client_list[i].client_id[j] && friends_list[k].client_list[i].client_id[j] < 16)
printf("0");
printf("%hhX", friends_list[k].client_list[i].client_id[j]);
}
p_ip = friends_list[k].client_list[i].ip_port;
printf("\nIP: %u.%u.%u.%u:%u",p_ip.ip.c[0],p_ip.ip.c[1],p_ip.ip.c[2],p_ip.ip.c[3],ntohs(p_ip.port));
printf("\nTimestamp: %u\n", friends_list[k].client_list[i].timestamp);
}
}
}
int main(int argc, char *argv[])
{
//memcpy(self_client_id, "qqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq", 32);
if (argc < 6) {
printf("usage %s ip port client_id(of friend to find ip_port of) filename(of file to send) client_id(ours)\n", argv[0]);
exit(0);
}
addfriend(argv[3]);
IP_Port friend_ip;
int connection = -1;
int inconnection = -1;
//initialize networking
//bind to ip 0.0.0.0:PORT
IP ip;
ip.i = 0;
init_networking(ip, PORT);
memcpy(self_client_id, argv[5], 32);
perror("Initialization");
IP_Port bootstrap_ip_port;
bootstrap_ip_port.port = htons(atoi(argv[2]));
bootstrap_ip_port.ip.i = inet_addr(argv[1]);
bootstrap(bootstrap_ip_port);
IP_Port ip_port;
char data[MAX_UDP_PACKET_SIZE];
uint32_t length;
char buffer1[128];
int read1 = 0;
char buffer2[128];
int read2 = 0;
FILE *file1 = fopen(argv[4], "rb");
if ( file1==NULL ){printf("Error opening file.\n");return 1;}
FILE *file2 = fopen("received.txt", "wb");
if ( file2==NULL ){return 1;}
read1 = fread(buffer1, 1, 128, file1);
while(1)
{
while(recievepacket(&ip_port, data, &length) != -1)
{
if(rand() % 3 != 1)//simulate packet loss
{
if(DHT_handlepacket(data, length, ip_port) && LosslessUDP_handlepacket(data, length, ip_port))
{
//if packet is not recognized
printf("Received unhandled packet with length: %u\n", length);
}
else
{
printf("Received handled packet with length: %u\n", length);
}
}
}
friend_ip = getfriendip(argv[3]);
if(friend_ip.ip.i != 0)
{
if(connection == -1)
{
printf("Started connecting to friend:");
printip(friend_ip);
connection = new_connection(friend_ip);
}
}
if(inconnection == -1)
{
inconnection = incoming_connection();
if(inconnection != -1)
{
printf("Someone connected to us:");
printip(connection_ip(inconnection));
}
}
//if someone connected to us write what he sends to a file
//also send him our file.
if(inconnection != -1)
{
if(write_packet(inconnection, buffer1, read1))
{
printf("Wrote data.\n");
read1 = fread(buffer1, 1, 128, file1);
}
read2 = read_packet(inconnection, buffer2);
if(read2 != 0)
{
printf("Received data.\n");
if(!fwrite(buffer2, read2, 1, file2))
{
printf("file write error\n");
}
if(read2 < 128)
{
fclose(file2);
}
}
}
//if we are connected to a friend send him data from the file.
//also put what he sends us in a file.
if(is_connected(connection) == 3)
{
if(write_packet(0, buffer1, read1))
{
printf("Wrote data.\n");
read1 = fread(buffer1, 1, 128, file1);
}
read2 = read_packet(0, buffer2);
if(read2 != 0)
{
printf("Received data.\n");
if(!fwrite(buffer2, read2, 1, file2))
{
printf("file write error\n");
}
if(read2 < 128)
{
fclose(file2);
}
}
}
doDHT();
doLossless_UDP();
//print_clientlist();
//print_friendlist();
//c_sleep(300);
c_sleep(1);
}
shutdown_networking();
return 0;
}
