AirLongDian's BLOG
0%

C++网络编程（3）

发表于 分类于

基本服务端实现

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
#include <iostream>
#include <unistd.h>
#include <sys/socket.h>
#include <string>
#include <arpa/inet.h>
#include <cstring>
using namespace::std;
int main()
{
	// make socket
	
	int soct1 = socket(AF_INET,SOCK_STREAM,IPPROTO_TCP);
	if (soct1 == -1)
	{
		std::cerr<<"create socket  fail!"<<std::endl;
		return -1;
	}

	// init ip address struct
	struct sockaddr_in saddrin1;
	saddrin1.sin_family = AF_INET;
	saddrin1.sin_port = htons(12345);
	saddrin1.sin_addr.s_addr = INADDR_ANY;
	// bind socket to host
	int ret = bind(soct1,(sockaddr*)&saddrin1,sizeof(saddrin1));
	if(ret == -1)
	{
		std::cout<<"bind failled!"<<std::endl;
		return -1;
	}
	// set listen
	ret =listen(soct1,10);
	if(ret == -1)
	{
		std::cout<<"listen failled!"<<std::endl;
		return -1;
	}
	// init ip address
	struct sockaddr_in saddrin2;
	socklen_t addrlen =sizeof(saddrin2);
	// access connect
	int acc1 = accept(soct1,(sockaddr*)&saddrin2,&addrlen);
	if(ret == -1)
	{
		std::cout<<"connect failled!"<<std::endl;
		return -1;
	}

	// show c_ip addr
	char ip[32];
	cout<<inet_ntop(AF_INET,&saddrin2.sin_addr.s_addr,ip,sizeof(ip))<<"\n\n";
	// make read buffer
	char buff[1024];
	// read
	while(true)
	{
		int len = recv(acc1,buff,sizeof(buff),0);
		if(len>0)
		{
			cerr<<buff<<endl;
			memset(buff,0,sizeof(buff));
			sprintf(buff,"hello customer!");
			send(acc1,buff,strlen(buff)+1,0);
		}
		else if(len = 0)
		{
			break;
		}
		else
		{
			cerr<<"ERR";
			break;
		}
	}
	// clean connect
	close(soct1);
	close(acc1);

	return 0;
}