1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
/* Lossless_UDP testclient
* A program that connects and sends a file using our lossless UDP algorithm.
* NOTE: this program simulates a 33% packet loss.
*
* Best used in combination with Lossless_UDP_testserver
*
* Compile with: gcc -O2 -Wall -o testclient ../core/network.c ../core/Lossless_UDP.c Lossless_UDP_testclient.c
*
* Command line arguments are the ip and port to cennect and send the file to.
* EX: ./test 127.0.0.1 33445 filename.txt
*/
#include "../core/network.h"
#include "../core/Lossless_UDP.h"
#ifdef WIN32
#define c_sleep(x) Sleep(1*x)
#else
#include <unistd.h>
#include <arpa/inet.h>
#define c_sleep(x) usleep(1000*x)
#endif
#define PORT 33446
void printpacket(char * data, uint32_t length, IP_Port ip_port)
{
uint32_t i;
printf("UNHANDLED PACKET RECEIVED\nLENGTH:%u\nCONTENTS:\n", length);
printf("--------------------BEGIN-----------------------------\n");
for(i = 0; i < length; i++)
{
if(data[i] < 16)
printf("0");
printf("%hhX",data[i]);
}
printf("\n--------------------END-----------------------------\n\n\n");
}
void printip(IP_Port ip_port)
{
printf("\nIP: %u.%u.%u.%u Port: %u",ip_port.ip.c[0],ip_port.ip.c[1],ip_port.ip.c[2],ip_port.ip.c[3],ntohs(ip_port.port));
}
/*
void printpackets(Data test)
{
int i;
if(test.size == 0)
return;
printf("SIZE: %u\n", test.size);
for(i =0; i < test.size; i++)
{
printf("%hhX", test.data[i]);
}
printf("\n");
}
void printconnection(int connection_id)
{
printf("--------------------BEGIN---------------------\n");
IP_Port ip_port = connections[connection_id].ip_port;
printf("IP: %u.%u.%u.%u Port: %u\n",ip_port.ip.c[0],ip_port.ip.c[1],ip_port.ip.c[2],ip_port.ip.c[3],ntohs(ip_port.port));
printf("status: %u, inbound: %u, SYNC_rate: %u\n", connections[connection_id].status,
connections[connection_id].inbound, connections[connection_id].SYNC_rate);
printf("data rate: %u, last sync: %llu, last sent: %llu, last recv: %llu \n", connections[connection_id].data_rate,
connections[connection_id].last_SYNC, connections[connection_id].last_sent, connections[connection_id].last_recv);
int i;
for(i =0; i < MAX_QUEUE_NUM; i++)
{
printf(" %u ",i);
printpackets(connections[connection_id].sendbuffer[i]);
}
for(i =0; i < MAX_QUEUE_NUM; i++)
{
printf(" %u ",i);
printpackets(connections[connection_id].recvbuffer[i]);
}
Data sendbuffer[MAX_QUEUE_NUM];
Data recvbuffer[MAX_QUEUE_NUM];
printf("recv_num: %u, orecv_num: %u, sent_packetnum %u, osent_packetnum: %u, successful_sent: %u, successful_read: %u\n",
connections[connection_id].recv_packetnum,
connections[connection_id].orecv_packetnum, connections[connection_id].sent_packetnum, connections[connection_id].osent_packetnum,
connections[connection_id].successful_sent,
connections[connection_id].successful_read);
printf("req packets: \n");
for(i = 0; i < BUFFER_PACKET_NUM; i++)
{
printf(" %u ", connections[connection_id].req_packets[i]);
}
printf("\nNumber: %u recv_counter: %u, send_counter: %u\n", connections[connection_id].num_req_paquets,
connections[connection_id].recv_counter, connections[connection_id].send_counter);
printf("--------------------END---------------------\n");
}
*/
//recieve packets and send them to the packethandler
//run doLossless_UDP();
void Lossless_UDP()
{
IP_Port ip_port;
char data[MAX_UDP_PACKET_SIZE];
uint32_t length;
while(recievepacket(&ip_port, data, &length) != -1)
{
printf("packet with length: %u\n", length);
if(rand() % 3 != 1)//add packet loss
{
if(LosslessUDP_handlepacket(data, length, ip_port))
{
printpacket(data, length, ip_port);
}
else
{
//printconnection(0);
printf("Received handled packet with length: %u\n", length);
}
}
}
doLossless_UDP();
}
int main(int argc, char *argv[])
{
if (argc < 4)
{
printf("usage: %s ip port filename\n", argv[0]);
exit(0);
}
char buffer[128];
int read;
FILE *file = fopen(argv[3], "rb");
if ( file==NULL ){return 1;}
//initialize networking
//bind to ip 0.0.0.0:PORT
IP ip;
ip.i = 0;
init_networking(ip, PORT);
perror("Initialization");
IP_Port serverip;
serverip.ip.i = inet_addr(argv[1]);
serverip.port = htons(atoi(argv[2]));
printip(serverip);
int connection = new_connection(serverip);
uint64_t timer = current_time();
while(1)
{
// printconnection(connection);
Lossless_UDP();
if(is_connected(connection) == 3)
{
printf("Connecting took: %llu us\n", (unsigned long long)(current_time() - timer));
break;
}
if(is_connected(connection) == 0)
{
printf("Connection timeout after: %llu us\n", (unsigned long long)(current_time() - timer));
return 1;
}
c_sleep(1);
}
timer = current_time();
//read first part of file
read = fread(buffer, 1, 128, file);
while(1)
{
//printconnection(connection);
Lossless_UDP();
if(is_connected(connection) == 3)
{
if(write_packet(connection, buffer, read))
{
//printf("Wrote data.\n");
read = fread(buffer, 1, 128, file);
}
//printf("%u\n", sendqueue(connection));
if(sendqueue(connection) == 0)
{
if(read == 0)
{
printf("Sent file successfully in: %llu us\n", (unsigned long long)(current_time() - timer));
break;
}
}
}
else
{
printf("Connecting Lost after: %llu us\n", (unsigned long long)(current_time() - timer));
return 0;
}
c_sleep(1);
}
return 0;
}
|
