服務端,客戶端

王ys發表於2024-09-07
//服務端(以C++作範例)
#include"mysocket.h"       
//匯入標頭檔案:由於mysock標頭檔案本身就有其它檔案,這裡無需匯入 
using namespace std;
  
SOCKET s_accept;
  
int main()
{
    cout << "---------------------------服務端---------------------------\n";
    cout << "正在啟動...\n";
    startup();
    cout << "啟動成功!\n";
    SOCKET s = createSocket(PF_INET, SOCK_STREAM);
    //以IPV6協議建立套接字
    //填充資訊
    SOCKADDR_IN server_addr;
    server_addr.sin_family = AF_INET;//協議
    server_addr.sin_port = htons(8226);//埠,隨便填
    server_addr.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");
    //ip地址,這裡填服務端裝置上的ip,127.0.0.1是本地ip,不能實現跨裝置互動
    if (bind(s, (SOCKADDR*)&server_addr, sizeof(SOCKADDR)) == SOCKET_ERROR)
    //繫結套接字
    {
        cout << "套接字繫結失敗!\n";
        WSACleanup();
        return FALSE;
    }
    cout << "套接字繫結成功!" << endl;
    if (listen(s, 1) == SOCKET_ERROR)
    {
        //監聽:將服務端轉為被動狀態,接收請求
        cout << "監聽失敗!\n";
        WSACleanup();
        return FALSE;
    }
    cout << "設定監聽狀態成功!\n";
    sockaddr_in accept_addr;         //用來記錄請求連線的套接字資訊
    int len = sizeof(SOCKADDR);
    cout << "等待客戶端發起請求..." << endl;
    SOCKET t = accept(s, (SOCKADDR*)&accept_addr, &len);
    //接受連線請求
    if (s_accept == SOCKET_ERROR) {
        cout << "請求錯誤!\n";
        WSACleanup();
        return FALSE;
    }
    cout << "建立連線成功!\n";
    char recv_buf[1145], send_buf[4514];
    while(1){
        //資訊互動部分,可以作改動
        myrecv(t, recv_buf);
        cout << "接收到客戶端資訊:" << recv_buf << endl;
        cout << "請輸入要傳送的資訊:";
        cin >> send_buf;
        mysend(t, send_buf);
    }
    return 0;
}
//客戶端
#include"mysocket.h"
//標頭檔案
using namespace std;
  
int main()
{
    cout << "-----------------客戶端----------------\n";
    startup();              //啟動
    //檢測版本號
    if (LOBYTE(wsdata.wVersion) != 2 || HIBYTE(wsdata.wHighVersion) != 2) {
        cout << "版本號與服務端不匹配!" << endl;
        WSACleanup();
        return FALSE;
    }
    //填充服務端資訊:這裡填和服務端一樣的就好,不做解釋
    SOCKET client = createSocket(PF_INET, SOCK_STREAM);
    SOCKADDR_IN server_addr;
    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.S_un.S_addr = inet_addr("192.168.1.49");
    server_addr.sin_port = htons(8226);
    //傳送連線請求 請求連線伺服器
    if (connect(client, (SOCKADDR*)&server_addr, sizeof(SOCKADDR)) == SOCKET_ERROR) {
        cout << "連線錯誤!" << endl;
        WSACleanup();
        return -1;
    }
    cout << "成功連線到伺服器" << endl;
    char send_buf[1145], recv_buf[4514];
    while(100){
        cout << "輸入要傳送的資訊:";
        cin>>send_buf;
        mysend(client, send_buf);
        cout << "等待服務端響應...\n";
        myrecv(client, recv_buf);
        cout << "收到來自服務端的資訊:" << recv_buf << endl;
    }
    return 0;
}
//mysocket.h
#ifndef __MYSOCKET_H__
#define __MYSOCKET_H__
//標頭檔案保護
#include<bits/stdc++.h>
#include<winsock.h>
#pragma comment(lib,"ws2_32.lib")
  
using namespace std;
  
WSADATA wsdata;
  
void startup(){
    //非同步啟動
    if (WSAStartup(MAKEWORD(2, 2), &wsdata))
    /*                 ^                ^
                版本號,這裡用的是2.2   |
                            資料存放處,這裡設成全域性變數
    */
    {
        //返回0則成功,否則失敗,報錯
        cout << "啟動失敗!\n";
        WSACleanup();
        exit(0);
    }
}
  
SOCKET createSocket(int af, int type){
    /*原函式原型:
      SOCKET socket(int af, int type, int protocol)
                        ^       ^           ^
                      協議  型別(後文) 形式(一般用0)
    */
    SOCKET ret = socket(af, type, 0);
    if (ret == INVALID_SOCKET)  //錯誤返回INVALID_SOCKET
    {
        //報錯
        cout << "建立套接字失敗!\n";
        WSACleanup();
        exit(0);
    }
    return ret;
}
  
void mysend(SOCKET s, const char* buf){
    /*
        帶報錯的send()函式,原函式原型為 :
        int send(SOCKET s, const char* buf, int len, int flag)
        這裡為了簡化,省略後兩個引數。
        函式把buf傳送給s,返回傳送長度
    */
    int len = send(s, buf, sizeof(buf), 0);
    if(len < 0)      //傳送錯誤
    {
        cout << "資訊傳送失敗!\n";
        WSACleanup();
        exit(0);
    }
}
  
void myrecv(SOCKET s, char* buf){
    /*
        帶報錯的recv()函式,其原型為:
        int recv(SOCKET s, char* buf, int len, int flag)
        同樣省略後兩個引數
        函式將從s收到的資訊儲存在buf中,返回接收長度
    */
    int len = recv(s, buf, sizeof(buf), 0);
    if(len < 0)
    {
        cout << "資訊接收失敗!\n";
        WSACleanup();
        exit(0);
    }
}
  
#endif
//別忘了

  

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