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
|
#include <sys/socket.h>
#include <netdb.h>
#include <arpa/inet.h>
#include <vector>
#include <string>
#include <string.h>
#include <sstream>
#include <unistd.h>
using namespace std;
#define _CONNECT 0
#define _BIND 1
#define _BUFF_SIZE 512 //bytes
//ERROR CODES
#define _ERR 1
#define _ERR_ACC 3
#define _ERR_SOCK 4
#define _ERR_CONNECT 5
#define _ERR_BIND 6
#define _ERR_RECV 7
#define _ERR_SND 8
class cSocket
{
public:
cSocket(char *host, int port, unsigned int mode);
int init(); //connects or binds the socket
int Send(int socket, char *data); //Send with char*
int Send(int socket, string data); //Send with string
string recieve(int socket);
int waitConn(int *socketNum, sockaddr_in *client);
int Close(int socket);
int quit();
private:
long getIP(char *_host); //resolves hostname
int main_sock; //main Socket
struct sockaddr_in server; //sockadddr_in for main_sock
char buffer[_BUFF_SIZE]; //Output Buffer
//std::vector<int> sockets; //stores sockets
unsigned int socketMode; //stores Mode
int connected;
};
cSocket::cSocket(char *host, int port, unsigned int mode)
{
main_sock = socket(AF_INET, SOCK_STREAM, 0);
socketMode = mode;
server.sin_port = htons(port);
server.sin_family = AF_INET;
if(mode == _CONNECT)
server.sin_addr.s_addr = getIP(host);
else if (mode == _BIND)
server.sin_addr.s_addr = INADDR_ANY; // accept on any incoming address
connected = 0;
}//cSocket
int cSocket::init()
{
if (main_sock == -1)
return _ERR_SOCK;
if (socketMode == _CONNECT)
{
if (connect(main_sock , (struct sockaddr *)&server , sizeof(server)) < 0)
return _ERR_CONNECT;
}
else if (socketMode == _BIND)
{
if( bind(main_sock,(struct sockaddr *)&server , sizeof(server)) < 0)
return _ERR_BIND;
listen(main_sock , 3);
}
else
return 3;
connected = 1;
return 0;
}//init
int cSocket::waitConn(int *socket, sockaddr_in *client)
{
int sz = sizeof(struct sockaddr_in);
int tmpSocket = accept(main_sock, (struct sockaddr *)client, (socklen_t*)&sz);
if (tmpSocket < 0)
return _ERR_ACC;
*socket = tmpSocket;
return 0;
}//waitConn
int cSocket::Send(int socket, char *data)
{
if (main_sock == -1 || connected < 1)
return _ERR_SOCK;
if( send(socket, data , strlen(data) , 0) < 0)
return _ERR_SND;
return 0;
}//Send
int cSocket::Send(int socket, string data)
{
const char *cData = data.c_str(); //Convert to char*
return Send(socket, cData);
}//Send
string cSocket::recieve(int socket)
{
for (int i = 0; i < _BUFF_SIZE; i++)
{
buffer[i] = 0;
}
if( recv(socket, buffer , _BUFF_SIZE , 0) < 0)
return "";
string ret (buffer);
return ret;
}//recieve
int cSocket::Close(int socket)
{
close(socket);
return 0;
}//close
int cSocket::quit()
{
Close(main_sock);
main_sock = -1;
connected = 0;
return 0;
}//quit
long cSocket::getIP(char *_host)
{
char ip[100];
struct hostent *he;
struct in_addr **addr_list;
int i;
if ( (he = gethostbyname( _host ) ) == NULL)
return 1;
addr_list = (struct in_addr **) he->h_addr_list;
for(i = 0; addr_list[i] != NULL; i++)
strcpy(ip , inet_ntoa(*addr_list[i]) );
return inet_addr(ip);
}//getIP
|