redhat enterprise 5 下的boost::asio 库应用（2）

缺乏、安全感 2022-06-17 14:37 44阅读 0赞

在熟悉asio之前，先来把bsd socket c/s模型熟悉下

client:

#include "stdio.h"
    #include "stdlib.h"
    #include "netinet/in.h"
    #include "sys/socket.h"
    #include "sys/types.h"
    #include "sys/wait.h"
    #include "arpa/inet.h"
    
    int _clientsock;
    
    struct sockaddr_in c_addr;
    
    int main()
    {
            _clientsock = socket(AF_INET,SOCK_STREAM,0);
    
            c_addr.sin_family=AF_INET;
            c_addr.sin_port=htons(6001);
            c_addr.sin_addr.s_addr=inet_addr("127.0.0.1");
    
            connect(_clientsock,(struct sockaddr*)&c_addr,sizeof(struct sockaddr));
    
            char buffer[128]={'\0'};
            recv(_clientsock,buffer,128,0);
            printf(buffer);
            //close(_clientsock);
            getchar();
            return 0;
    }

server:

#include "stdio.h"
    #include "stdlib.h"
    #include "sys/types.h"
    #include "netinet/in.h"
    #include "sys/socket.h"
    #include "sys/wait.h"
    #include "string.h"
    #include "arpa/inet.h"
    
    
    int _listensock;
    int _clientsock;
    
    struct sockaddr_in s_addr,c_addr;
    
    int main()
    {
            _listensock = socket(AF_INET,SOCK_STREAM,0);
    
            s_addr.sin_family=AF_INET;
            s_addr.sin_port=htons(6001);
            s_addr.sin_addr.s_addr=INADDR_ANY;
    
            bind(_listensock,(struct sockaddr*)&s_addr,sizeof(struct sockaddr));
    
            listen(_listensock,4);
    
            while(1)
            {
                    int l = sizeof(struct sockaddr_in);
    
                    _clientsock = accept(_listensock,(struct sockaddr*)&c_addr,(socklen_t*)&l);
    
                    printf("recv a client %s\n",inet_ntoa(c_addr.sin_addr));
    
                    if(1)
                    {
                            send(_clientsock,"helloworld",26,0);
                    }
    
                    //close(_clientsock);
            }
    
            return 0;
    }

不清楚 ，close 需要什么头文件。菜鸟啊。