|
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
|
#include <sys/types.h>
#include <sys/time.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
int
main(
int
argc,
char
const
*argv[])
{
int
server_sockfd, client_sockfd;
int
server_len, client_len;
struct
sockaddr_in server_address;
struct
sockaddr_in client_address;
int
result;
fd_set readfds,testfds;
// create a socket for server and name it
server_sockfd=socket(AF_INET,SOCK_STREAM,0);
server_address.sin_family=AF_INET;
server_address.sin_addr.s_addr=htonl(INADDR_ANY);
server_address.sin_port=htons(9734);
server_len=
sizeof
(server_address);
//bind the socket and address
bind(server_sockfd,(
struct
sockaddr*)&server_address,server_len);
listen(server_sockfd,5);
FD_ZERO(&readfds);
FD_SET(server_sockfd,&readfds);
while
(1){
char
ch;
int
fd;
int
nread;
testfds=readfds;
printf
(
"server waiting...\n"
);
result=select(FD_SETSIZE,&testfds,(fd_set*)NULL,(fd_set*)NULL,(
struct
timeval*)0);
if
(result<1){
perror
(
"server5..."
);
exit
(1);
}
for
(fd=0;fd<FD_SETSIZE;fd++){
if
(FD_ISSET(fd,&testfds)){
if
(fd==server_sockfd){
client_len=
sizeof
(client_address);
client_sockfd=accept(server_sockfd,(
struct
sockaddr*)&client_address,&client_len);
FD_SET(client_sockfd,&readfds);
printf
(
"adding client on fd %d\n"
, client_sockfd );
}
else
{
ioctl(fd,FIONREAD,&nread);
if
(nread==0){
close(fd);
FD_CLR(fd,&readfds);
printf
(
"removing client on fd %d\n"
,fd );
}
else
{
read(fd,&ch,1);
sleep(3);
printf
(
"server client on fd %d\n"
,fd );
ch++;
write(fd,&ch,1);
}
}
}
}
}
return
0;
}
|
==============================================================================
本文转自被遗忘的博客园博客，原文链接：http://www.cnblogs.com/rollenholt/archive/2012/07/10/2584778.html，如需转载请自行联系原作者
