客户端,服务端

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//客户端
#include "mysocket.h"
//头文件
using namespace std;
int main(int argc, char** argv) {
    cout<< "-----------------客户端----------------\n";
    startup();
    //检测版本号
    if(LOBYTE(wsdata.wVersion)!=2||HIBYTE(wsdata.wHighVersion)!=2){
        cout<<"版本号与服务端不匹配!\n";
        WSACleanup();
        return FALSE;
    }
    //填充服务端信息:这里填和服务端一样
    SOCKET client=createSocket(PF_INET,SOCK_STREAM);
    SOCKADDR_IN server_addr;
    server_addr.sin_family=AF_INET;
    string ip;
    cout<<"请输入IPv4地址:\n";
    cin>>ip;
    char ipconfig[ip.size()];
    for(int i=0;i<ip.size();i++){
        ipconfig[i]=ip[i];
    }
    server_addr.sin_addr.S_un.S_addr=inet_addr(ipconfig);
    server_addr.sin_port=htons(8226);
    //发送连接请求
    if(connect(client,(SOCKADDR*)&server_addr,sizeof(SOCKADDR)==SOCKET_ERROR)){
        cout<<"连接错误!\n";
        WSACleanup();
        return -1;
    }
    cout<<"成功连接到服务器\n";
    char send_buf[1145],recv_buf[4515];
    while(1){
        cout<<"输入要发送的信息:\n";
        cin>>send_buf;
        mysend(client,send_buf);
        cout<<"等待服务器响应...\n";
        myrecv(client,recv_buf);
        cout<<"收到来自服务端的信息:\n";
        cout<<recv_buf<<endl;
    }
    return 0;
}

  

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//服务端(以C++作范例)
#include"mysocket.h"       
//导入头文件:由于mysock头文件本身就有其它文件,这里无需导入 
using namespace std;
  
SOCKET s_accept;
  
int main()
{
    cout << "---------------------------服务端---------------------------\n";
    cout << "正在启动...\n";
    startup();
    cout << "启动成功!\n";
    SOCKET s = createSocket(PF_INET, SOCK_STREAM);
    //以IPV6协议创建套接字
    //填充信息
    SOCKADDR_IN server_addr;
    server_addr.sin_family = AF_INET;//协议
    server_addr.sin_port = htons(8226);//端口,随便填
    server_addr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
    //ip地址,这里填服务端设备上的ip,127.0.0.1是本地ip,不能实现跨设备交互
    if (bind(s, (SOCKADDR*)&server_addr, sizeof(SOCKADDR)) == SOCKET_ERROR)
    //绑定套接字
    {
        cout << "套接字绑定失败!\n";
        WSACleanup();
        return FALSE;
    }
    cout << "套接字绑定成功!" << endl;
    if (listen(s, 1) == SOCKET_ERROR)
    {
        //监听:将服务端转为被动状态,接收请求
        cout << "监听失败!\n";
        WSACleanup();
        return FALSE;
    }
    cout << "设置监听状态成功!\n";
    sockaddr_in accept_addr;         //用来记录请求连接的套接字信息
    int len = sizeof(SOCKADDR);
    cout << "等待客户端发起请求..." << endl;
    SOCKET t = accept(s, (SOCKADDR*)&accept_addr, &len);
    //接受连接请求
    if (s_accept == SOCKET_ERROR) {
        cout << "请求错误!\n";
        WSACleanup();
        return FALSE;
    }
    cout << "建立连接成功!\n";
    char recv_buf[1145], send_buf[4514];
    while(1){
        //信息交互部分,可以作改动
        myrecv(t, recv_buf);
        cout << "接收到客户端信息:" << recv_buf << endl;
        cout << "请输入要发送的信息:";
        cin >> send_buf;
        mysend(t, send_buf);
    }
    return 0;
}

  

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//mysocket.h
#ifndef __MYSOCKET_H__
#define __MYSOCKET_H__
//头文件保护
#include<bits/stdc++.h>
#include<winsock.h>
#pragma comment(lib,"ws2_32.lib")
  
using namespace std;
  
WSADATA wsdata;
  
void startup(){
    //异步启动
    if (WSAStartup(MAKEWORD(2, 2), &wsdata))
    /*                 ^                ^
                版本号,这里用的是2.2   |
                            数据存放处,这里设成全局变量
    */
    {
        //返回0则成功,否则失败,报错
        cout << "启动失败!\n";
        WSACleanup();
        exit(0);
    }
}
  
SOCKET createSocket(int af, int type){
    /*原函数原型:
      SOCKET socket(int af, int type, int protocol)
                        ^       ^           ^
                      协议  类型(后文) 形式(一般用0)
    */
    SOCKET ret = socket(af, type, 0);
    if (ret == INVALID_SOCKET)  //错误返回INVALID_SOCKET
    {
        //报错
        cout << "创建套接字失败!\n";
        WSACleanup();
        exit(0);
    }
    return ret;
}
  
void mysend(SOCKET s, const char* buf){
    /*
        带报错的send()函数,原函数原型为 :
        int send(SOCKET s, const char* buf, int len, int flag)
        这里为了简化,省略后两个参数。
        函数把buf发送给s,返回发送长度
    */
    int len = send(s, buf, sizeof(buf), 0);
    if(len < 0)      //发送错误
    {
        cout << "信息发送失败!\n";
        WSACleanup();
        exit(0);
    }
}
  
void myrecv(SOCKET s, char* buf){
    /*
        带报错的recv()函数,其原型为:
        int recv(SOCKET s, char* buf, int len, int flag)
        同样省略后两个参数
        函数将从s收到的信息储存在buf中,返回接收长度
    */
    int len = recv(s, buf, sizeof(buf), 0);
    if(len < 0)
    {
        cout << "信息接收失败!\n";
        WSACleanup();
        exit(0);
    }
}
  
#endif
//别忘了
posted @   陈若麟  阅读(11)  评论(0编辑  收藏  举报
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