tcp socket对话之vs2013

Dear 丶 2022-05-28 02:15 161阅读 0赞

服务器：

1.创建套接字

2.绑定

3.listen监听

4.accept创建接收套接字

5.收发消息

6.close

客户端：

1.创建套接字

2.bind绑定

3.connect连接

4.收发消息

5.close

服务器端代码：

\#include <iostream>  
\#include <winsock2.h>  
\#pragma comment(lib,"ws2\_32.lib")   
using namespace std;  
  
  
int main()  
\{  
WSADATA ws;  
WSAStartup(0x0202, &ws);  
SOCKET sock = socket(AF\_INET, SOCK\_STREAM, 0);  
if (INVALID\_SOCKET == sock)  
\{  
cout << "出错:" << WSAGetLastError() << endl;  
return -1;  
\}  
sockaddr\_in sa;  
sa.sin\_addr.S\_un.S\_addr = inet\_addr("127.0.0.1");  
sa.sin\_family = AF\_INET;  
sa.sin\_port = htons(6666);  
int ret = bind(sock, (sockaddr\*)&sa, sizeof(sa));  
if (ret < 0)  
\{  
cout << "bind error" << endl;  
return -1;  
\}  
ret = listen(sock, 10);  
if (ret < 0)  
\{  
cout << "listen error" << endl;  
\}  
cout << "listen..." << endl;  
SOCKET fd = accept(sock, NULL, NULL);  
char buf\[100\] = \{ 0 \};  
while (true)  
\{  
recv(fd, buf, sizeof(buf), 0);  
cout << "b:" << buf << endl;  
memset(buf, 0, sizeof(buf));  
cout << "a:";  
cin >> buf;  
send(fd, buf, sizeof(buf), 0);  
memset(buf, 0, sizeof(buf));  
\}  
closesocket(fd);  
closesocket(sock);  
  
  
return 0;

客户端代码：

\#include <iostream>  
\#include <winsock2.h>  
\#pragma comment(lib,"ws2\_32.lib")   
using namespace std;  
  
  
int main()  
\{  
WSADATA ws;  
WSAStartup(0x0202, &ws);  
SOCKET sock = socket(AF\_INET, SOCK\_STREAM, 0);  
if (INVALID\_SOCKET == sock)  
\{  
cout << "出错:" << WSAGetLastError() << endl;  
return -1;  
\}  
sockaddr\_in sa,sb;  
sa.sin\_addr.S\_un.S\_addr = inet\_addr("127.0.0.1");  
sa.sin\_family = AF\_INET;  
sa.sin\_port = htons(9999);  
sb.sin\_addr.S\_un.S\_addr = inet\_addr("127.0.0.1");  
sb.sin\_family = AF\_INET;  
sb.sin\_port = htons(6666);  
int ret = bind(sock, (sockaddr\*)&sa, sizeof(sa));  
if (ret < 0)  
\{  
cout << "bind error" << endl;  
return -1;  
\}  
ret = connect(sock, (sockaddr\*)&sb, sizeof(sb));  
if (ret < 0)  
\{  
cout << "connect error" << endl;  
\}  
char buf\[100\] = \{ 0 \};  
while (true)  
\{  
cout << "b:";  
cin >> buf;  
send(sock, buf, sizeof(buf), 0);  
memset(buf, 0, sizeof(buf));  
recv(sock, buf, sizeof(buf), 0);  
cout << "a:" << buf << endl;  
memset(buf, 0, sizeof(buf));  
\}  
closesocket(sock);  
  
  
return 0;  
\}