Client.exe IPAddress PortNumber,例如Client 127.0.0.1 8000
然後在用戶端的命令列輸入字串,用戶端將會把消息送到伺服器,伺服器再把消息傳回用戶端。
伺服器端,Server.cpp
//Server.cpp
#include
#include
#include
#pragma comment(lib,"ws2_32.lib")
int main(int argc, char* argv[]){
//判斷是否輸入了PORT號
if(argc!=2){
printf("Usage: %s PortNumber\n",argv[0]);
exit(-1);
}
//將PORT號轉化為整數
short port;
if((port = atoi(argv[1]))==0){
printf("PORT號指定為整數");
exit(-1);
}
WSADATA wsa;
//初始化套接字DLL
if(WSAStartup(MAKEWORD(2,2),&wsa)!=0){
printf("Socket初始化失敗!");
exit(-1);
}
//創建Socket
SOCKET serverSocket;
if((serverSocket=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==INVALID_SOCKET){
printf("創建Socket失敗!");
exit(-1);
}
struct sockaddr_in serverAddress;
memset(&serverAddress,0,sizeof(sockaddr_in));
serverAddress.sin_family=AF_INET;
serverAddress.sin_addr.S_un.S_addr = htonl(INADDR_ANY);
serverAddress.sin_port = htons(port);
//綁定
if(bind(serverSocket,(sockaddr*)&serverAddress,sizeof(serverAddress))==SOCKET_ERROR){
printf("Socket绑定到PORT失敗!端口: %d\n",port);
exit(-1);
}
//進入監聽狀態
if(listen(serverSocket,SOMAXCONN)==SOCKET_ERROR){
printf("監聽失敗!");
exit(-1);
}
printf("Server %d is listening......\n",port);
SOCKET clientSocket;//用來和用戶端通信的Socket
struct sockaddr_in clientAddress;//用來和用戶端通信的Socket地址
memset(&clientAddress,0,sizeof(clientAddress));
int addrlen = sizeof(clientAddress);
//接受連接
if((clientSocket=accept(serverSocket,(sockaddr*)&clientAddress,&addrlen))==INVALID_SOCKET){
printf("接受客户端連接失敗!");
exit(-1);
}
printf("Accept connection from %s\n",inet_ntoa(clientAddress.sin_addr));
char buf[4096];
while(1){
//接收數據
int bytes;
if((bytes=recv(clientSocket,buf,sizeof(buf),0))==SOCKET_ERROR){
printf("接收數據失敗!\n");
exit(-1);
}
buf[bytes]='\0';
printf("Message from %s: %s\n",inet_ntoa(clientAddress.sin_addr),buf);
if(send(clientSocket,buf,bytes,0)==SOCKET_ERROR){
printf("傳送數據失败!");
exit(-1);
}
}
//清理Socket占用的資源
WSACleanup();
return 0;
}
用戶端,Client.cpp
//Client.cpp
#include
#include
#include
#pragma comment(lib,"ws2_32.lib")
int main(int argc, char* argv[]){
//判斷是否輸入了IP地址和Port
if(argc!=3){
printf("Usage: %s IPAddress PortNumber\n",argv[0]);
exit(-1);
}
//把字符的IP地址轉化为u_long
unsigned long ip;
if((ip=inet_addr(argv[1]))==INADDR_NONE){
printf("不合法的IP地址:%s",argv[1]);
exit(-1);
}
//把port轉化成整数
short port;
if((port = atoi(argv[2]))==0){
printf("Port有誤!");
exit(-1);
}
printf("Connecting to %s:%d......\n",inet_ntoa(*(in_addr*)&ip),port);
WSADATA wsa;
//初始化套接字DLL
if(WSAStartup(MAKEWORD(2,2),&wsa)!=0){
printf("套接字初始化失败!");
exit(-1);
}
//创建套接字
SOCKET sock;
if((sock=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==INVALID_SOCKET){
printf("创建套接字失败!");
exit(-1);
}
struct sockaddr_in serverAddress;
memset(&serverAddress,0,sizeof(sockaddr_in));
serverAddress.sin_family=AF_INET;
serverAddress.sin_addr.S_un.S_addr = ip;
serverAddress.sin_port = htons(port);
//建立和服务器的连接
if(connect(sock,(sockaddr*)&serverAddress,sizeof(serverAddress))==SOCKET_ERROR){
printf("建立连接失败!");
exit(-1);
}
char buf[4096];
while(1){
printf(">");
//从控制台读取一行数据
gets(buf);
//发送给服务器
if(send(sock,buf,strlen(buf),0)==SOCKET_ERROR){
printf("发送数据失败!");
exit(-1);
}
int bytes;
if((bytes=recv(sock,buf,sizeof(buf),0))==SOCKET_ERROR){
printf("接收數據失败!\n");
exit(-1);
}
buf[bytes]='\0';
printf("Message from %s: %s\n",inet_ntoa(serverAddress.sin_addr),buf);
}
//清理套接字占用的资源
WSACleanup();
return 0;
}
參考資料:
小新a家
http://www.wretch.cc/blog/mntkey/21030760
如何使用DevCpp寫Socket程式
http://www.twbbs.net.tw/2090793.html
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