C++ socket网络编程——即时通信系统( 六 ) _小知识

int epoll_events_count = epoll_wait( epfd, events, 2, -1 );

//处理就绪事件
for(int i = 0; i < epoll_events_count ; ++i)
{
memset(recv_buf,0,sizeof(recv_buf));
//服务端发来消息
if(events[i].data.fd == sock)
{
//接受服务端广播消息
int ret = recv(sock, recv_buf, BUF_SIZE, 0);
//清空结构体
memset(&msg,0,sizeof(msg));
//将发来的消息转换为结构体
memcpy(&msg,recv_buf,sizeof(msg));

// ret= 0 服务端关闭
if(ret == 0) {
cout << "Server closed connection: " << sock << endl;
close(sock);
isClientwork = 0;
} else {
cout << msg.content << endl;
}
}
//子进程写入事件发生，父进程处理并发送服务端
else {
//父进程从管道中读取数据
int ret = read(events[i].data.fd, recv_buf, BUF_SIZE);
// ret = 0
if(ret == 0)
isClientwork = 0;
else {
// 将从管道中读取的字符串信息发送给服务端
send(sock, recv_buf, sizeof(recv_buf), 0);
}
}
}//for
}//while
}

// 退出进程
Close();
}
ClientMain.cpp

#include "Client.h"

// 客户端主函数
// 创建客户端对象后启动客户端
int main(int argc, char *argv[]) {
Client client;
client.Start();
return 0;
}

ServerMain.cpp

#include "Server.h"

// 服务端主函数
// 创建服务端对象后启动服务端
int main(int argc, char *argv[]) {
Server server;
server.Start();
return 0;
}

最后是Makefile 文件对上面的文件进行编译

CC = g++
CFLAGS = -std=c++11

all: ClientMain.cpp ServerMain.cpp Server.o Client.o
$(CC) $(CFLAGS) ServerMain.cpp Server.o -o chatroom_server
$(CC) $(CFLAGS) ClientMain.cpp Client.o -o chatroom_client

Server.o: Server.cpp Server.h Common.h
$(CC) $(CFLAGS) -c Server.cpp

Client.o: Client.cpp Client.h Common.h
$(CC) $(CFLAGS) -c Client.cpp

clean:
rm -f *.o chatroom_server chatroom_client