聊天室客户端程序 Windows控制台应用程序
对应的Linux服务器使用select模型实现:
Linux下select函数实现的聊天服务器
http://blog.youkuaiyun.com/microtong/archive/2009/12/12/4989902.aspx
运行命令行为:Client.exe 127.0.0.1 8000
命令行参数分别为要连接的IP地址和端口
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//Client.cpp
#include <winsock2.h>
#include <stdio.h>
#include <windows.h>
//引入静态链接库
#pragma comment(lib,"ws2_32.lib")
//缓冲区大小
#define BUFFER_SIZE 4096
//用来修改用户姓名的命令
const char* CMD_NAME="name";
//用来退出系统的命令
const char* CMD_BYE="bye";
//负责接收数据的线程
DWORD WINAPI ReceiveThreadProc( LPVOID lpParameter);
int main(int argc, char* argv[]){
//判断是否输入了IP地址和端口号
if(argc!=3){
printf("Usage: %s IPAddress PortNumber\n",argv[0]);
exit(-1);
}
//把字符串的IP地址转化为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);
}
//把端口号转化成整数
short port;
if((port = atoi(argv[2]))==0){
printf("端口号有误!");
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);
}
//创建从服务器接收数据的线程
DWORD threadId;
CreateThread(NULL,0,ReceiveThreadProc,&sock,0,&threadId);
printf(">");
char buf[BUFFER_SIZE];
while(1){
//从控制台读取一行数据
gets(buf);
printf(">");
//发送给服务器
if(send(sock,buf,strlen(buf),0)==SOCKET_ERROR){
printf("发送数据失败!");
exit(-1);
}
}
//清理套接字占用的资源
WSACleanup();
return 0;
}
DWORD WINAPI ReceiveThreadProc( LPVOID lpParameter){
SOCKET s = *(SOCKET*)lpParameter;
char receiveBuf[BUFFER_SIZE];
int bytes;
while(1){
if((bytes=recv(s,receiveBuf,sizeof(receiveBuf),0))==SOCKET_ERROR){
printf("接收数据失败!\n");
exit(-1);
}
if(bytes==0){
printf("server is down.\n");
exit(-1);
}
receiveBuf[bytes]='\0';
//如果用户输入了“bye”
if(strcmp(receiveBuf,CMD_BYE)==0){
closesocket(s);
exit(0);
}
printf("\n%s\n>",receiveBuf);
}
}
//Client.cpp
#include <winsock2.h>
#include <stdio.h>
#include <windows.h>
//引入静态链接库
#pragma comment(lib,"ws2_32.lib")
//缓冲区大小
#define BUFFER_SIZE 4096
//用来修改用户姓名的命令
const char* CMD_NAME="name";
//用来退出系统的命令
const char* CMD_BYE="bye";
//负责接收数据的线程
DWORD WINAPI ReceiveThreadProc( LPVOID lpParameter);
int main(int argc, char* argv[]){
//判断是否输入了IP地址和端口号
if(argc!=3){
printf("Usage: %s IPAddress PortNumber\n",argv[0]);
exit(-1);
}
//把字符串的IP地址转化为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);
}
//把端口号转化成整数
short port;
if((port = atoi(argv[2]))==0){
printf("端口号有误!");
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);
}
//创建从服务器接收数据的线程
DWORD threadId;
CreateThread(NULL,0,ReceiveThreadProc,&sock,0,&threadId);
printf(">");
char buf[BUFFER_SIZE];
while(1){
//从控制台读取一行数据
gets(buf);
printf(">");
//发送给服务器
if(send(sock,buf,strlen(buf),0)==SOCKET_ERROR){
printf("发送数据失败!");
exit(-1);
}
}
//清理套接字占用的资源
WSACleanup();
return 0;
}
DWORD WINAPI ReceiveThreadProc( LPVOID lpParameter){
SOCKET s = *(SOCKET*)lpParameter;
char receiveBuf[BUFFER_SIZE];
int bytes;
while(1){
if((bytes=recv(s,receiveBuf,sizeof(receiveBuf),0))==SOCKET_ERROR){
printf("接收数据失败!\n");
exit(-1);
}
if(bytes==0){
printf("server is down.\n");
exit(-1);
}
receiveBuf[bytes]='\0';
//如果用户输入了“bye”
if(strcmp(receiveBuf,CMD_BYE)==0){
closesocket(s);
exit(0);
}
printf("\n%s\n>",receiveBuf);
}
}
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