WinSock之簡單的TCP通訊程式設計

編寫客戶端與服務端程式，客戶端與服務端建立tcp連線後：

（1）服務端向客戶端傳送一條內容為"connect succeed.please send a message to me."然後等待接收客戶端傳送來的一條資訊，收到後顯示該資訊並關閉連線，繼續等待其他客戶的鏈結請求。

（2）客戶端在與伺服器的連線寄建立成功後接收並顯示從伺服器收到的資訊，然後從鍵盤接收一行資訊傳送給伺服器。

#define _winsock_deprecated_no_warnings

#include "winsock2.h"
#include "iostream"
#pragma comment(lib,"ws2_32.lib") //鏈結winsock導入庫
#define port 65432
using namespace std;
int main(int argc, char **ar**) 
else if (size == 0) 
else 
size = recv(newsock, msgbuffer, sizeof(msgbuffer), 0);
if (size == 0) 
else 
} closesocket(sock_server);
wsacleanup();
return 0;
}

#define _winsock_deprecated_no_warnings

#include "winsock2.h"
#include "iostream"
#pragma comment(lib,"ws2_32.lib") //鏈結winsock導入庫
#define port 65432
using namespace std;
int main(int argc, char **ar**) 
else 
//傳送
cout << "從鍵盤輸入發給伺服器的資訊！\n";
cin >> msgbuffer;
size = send(sock_client, msgbuffer, sizeof(msgbuffer), 0);
if (size == 0) 
else 
closesocket(sock_client);
wsacleanup();
return 0;
}

客戶端：

/*****服務端*****/

#define _winsock_deprecated_no_warnings
#include "winsock2.h"
#include "iostream"
#pragma comment(lib,"ws2_32.lib") //鏈結winsock導入庫
#define port 65432
using namespace std;
int main(int argc, char **ar**) 
int sock_client;
struct sockaddr_in server_addr;
int addr_len = sizeof(struct sockaddr_in);
char msgbuffer[1000];
//建立套接字
if ((sock_client = socket(af_inet, sock_stream, 0)) < 0) 
//填寫伺服器位址
char ip[20];
cin >> ip;
memset((void *)&server_addr, 0, addr_len);
server_addr.sin_family = af_inet;
server_addr.sin_port = htons(port);
server_addr.sin_addr.s_addr = inet_addr(ip); //填寫伺服器ip位址
if (connect(sock_client, (struct sockaddr *)&server_addr, addr_len) != 0) 
//接收資訊
int size;
if ((size = recv(sock_client, msgbuffer, sizeof(msgbuffer), 0)) < 0) 
else if (size == 0) 
else 
cout << "從鍵盤輸入發給伺服器的資訊！\n";
cin >> msgbuffer;
if ((size = send(sock_client, msgbuffer, sizeof(msgbuffer), 0)) < 0) 
else if (size == 0) 
else 
closesocket(sock_client);
wsacleanup();
return 0;
}/*****客戶端*****/
#define _winsock_deprecated_no_warnings
#include "winsock2.h"
#include "iostream"
#pragma comment(lib,"ws2_32.lib") //鏈結winsock導入庫
#define port 65432
using namespace std;
int main(int argc, char **ar**) 
int sock_client;
struct sockaddr_in server_addr;
int addr_len = sizeof(struct sockaddr_in);
char msgbuffer[1000];
//建立套接字
if ((sock_client = socket(af_inet, sock_stream, 0)) < 0) 
//填寫伺服器位址
char ip[20];
cin >> ip;
memset((void *)&server_addr, 0, addr_len);
server_addr.sin_family = af_inet;
server_addr.sin_port = htons(port);
server_addr.sin_addr.s_addr = inet_addr(ip); //填寫伺服器ip位址
if (connect(sock_client, (struct sockaddr *)&server_addr, addr_len) != 0) 
//接收資訊
int size;
if ((size = recv(sock_client, msgbuffer, sizeof(msgbuffer), 0)) < 0) 
else if (size == 0) 
else 
cout << "從鍵盤輸入發給伺服器的資訊！\n";
cin >> msgbuffer;
if ((size = send(sock_client, msgbuffer, sizeof(msgbuffer), 0)) < 0) 
else if (size == 0) 
else 
closesocket(sock_client);
wsacleanup();
return 0;
}

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