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
| #include <iostream>
#include <unistd.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
#include <string.h>
#include <stdio.h>
int main(void)
{
int fd = socket(PF_INET, SOCK_STREAM, 0);
if (fd == -1) {
printf("create socket error %d\n", errno);
exit(1);
}
int on = 1;
setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &on, sizeof(on));
struct sockaddr_in addr;
addr.sin_family = PF_INET;
addr.sin_port = htons(8081);
addr.sin_addr.s_addr = htonl(INADDR_ANY);
if (bind(fd, reinterpret_cast<struct sockaddr *>(&addr),
sizeof(addr)) != 0) {
printf("bind socket error %d\n", errno);
switch (errno)
{
case EADDRINUSE:
std::cout << "Address already in use" << std::endl;
break;
default:
break;
}
close(fd);
exit(1);
}
if (listen(fd, 1024) != 0) {
printf("listen socket error %d\n", errno);
close(fd);
exit(1);
}
while(1) {
struct sockaddr_in cli;
int len = sizeof(cli);
int nfd = accept(fd, reinterpret_cast<struct sockaddr *>(&cli),
reinterpret_cast<socklen_t *>(&len));
if(nfd == -1) {
printf("accept socket error %d\n", errno);
close(fd);
exit(1);
}
char buf[1024];
char content[] = "hello http!";
bzero(buf, 1024);
recv(nfd, buf, 1024, 0);
printf("----------------recv msg----------------\n%s\n", buf);
bzero(buf, 1024);
sprintf(buf, "HTTP/1.1 200 OK\r\nContent-Length: %d\r\n"
"Content-Type: text/html\r\n\r\n%s", static_cast<int>(strlen(content)), content);
printf("----------------ready to send buf----------------\n%s\n", buf);
if (send(nfd, buf, strlen(buf), 0) == -1) {
printf("write socket error %d\n", errno);
}
if (close(nfd) != 0)
printf("close nfd err: %d\n", errno);
}
if (close(fd) != 0)
printf("close fd err: %d\n", errno);
exit(0);
}
|
)
