Socket实现阿里云Linux服务器与本地Windows通信

Linux 服务器端

#include <netinet/in.h>    
#include <sys/types.h>    
#include <sys/socket.h>    
#include <stdio.h>        
#include <stdlib.h>       
#include <string.h>       
#include <unistd.h>
#define SERVER_PORT    39500  //端口号
#define LENGTH_OF_LISTEN_QUEUE 20
#define BUFFER_SIZE 1024

int main(int argc, char **argv)
{
    
    
    struct sockaddr_in server_addr;
    int server_socket;
    int opt = 1;

    bzero(&server_addr,sizeof(server_addr)); 

    server_addr.sin_family = AF_INET;
    server_addr.sin_addr.s_addr = htons(INADDR_ANY);
    server_addr.sin_port = htons(SERVER_PORT);

    /* create a socket */
    server_socket = socket(PF_INET,SOCK_STREAM,0);
    if( server_socket < 0)
    {
    
    
        printf("Create Socket Failed!");
        exit(1);
    }

    /* bind socket to a specified address*/
    setsockopt(server_socket, SOL_SOCKET, SO_REUSEADDR, &opt, sizeof(opt));
    if( bind(server_socket,(struct sockaddr*)&server_addr,sizeof(server_addr)))
    {
    
    
        printf("Server Bind Port : %d Failed!",SERVER_PORT); 
        exit(1);
    }

    /* listen a socket */
    if(listen(server_socket, LENGTH_OF_LISTEN_QUEUE))
    {
    
    
        printf("Server Listen Failed!"); 
        exit(1);
    }

    /* run server */
    while (1) 
    {
    
    
        struct sockaddr_in client_addr;
        int client_socket;      
        socklen_t length;
        char buffer[BUFFER_SIZE];

        /* accept socket from client */
        length = sizeof(client_addr);
        client_socket = accept(server_socket, (struct sockaddr*)&client_addr, &length);
        if( client_socket < 0)
        {
    
    
            printf("Server Accept Failed!\n");
            break;
        }

        /* receive data from client */
        while(1)
        {
    
    
            bzero(buffer, BUFFER_SIZE);
            length = recv(client_socket, buffer, BUFFER_SIZE, 0);
            if (length < 0)
            {
    
    
                printf("Server Recieve Data Failed!\n");
                break;
            }

            if('q' == buffer[0])
            {
    
    
                printf("Quit from client!\n");
                break;
            }

            printf("%s\n", buffer);
        }   

        close(client_socket);
    }

    close(server_socket);
    return 0;
}

Windows客户端

#include <stdio.h>
#include <Windows.h>

#pragma comment(lib,"ws2_32.lib")
#define  PORT 39500	//端口号
#define  IP_ADDRESS "***.***.194.13"  //需要连接的服务器公网IP
int SendMessage(SOCKET ClientSocket)
{
    
    
    char SendBuffer[2] = "1";
    int Ret;
    while (1)
    {
    
    

        /* send data to server */
        system("pause");
        Ret = send(ClientSocket, SendBuffer, (int)strlen(SendBuffer), 0);

        if (Ret == SOCKET_ERROR)
        {
    
    
            printf("Send Info Error::%d\n", GetLastError());
            return -1;
        }

    }
}
int main(int argc, char* argv[])
{
    
    
    WSADATA  Ws;
    SOCKET ClientSocket;
    struct sockaddr_in ClientAddr;
    int Ret = 0;

    /* Init Windows Socket */
    if (WSAStartup(MAKEWORD(2, 2), &Ws) != 0)
    {
    
    
        printf("初始化socket失败::%d\n", GetLastError());
        return -1;
    }

    /* Create Socket */
    ClientSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
    if (ClientSocket == INVALID_SOCKET)
    {
    
    
        printf("创建socket失败::%d\n", GetLastError());
        return -1;
    }

    ClientAddr.sin_family = AF_INET;
    ClientAddr.sin_addr.s_addr = inet_addr(IP_ADDRESS);
    ClientAddr.sin_port = htons(PORT);
    memset(ClientAddr.sin_zero, 0x00, 8);

    /* connect socket */
    Ret = connect(ClientSocket, (struct sockaddr*)&ClientAddr, sizeof(ClientAddr));
    if (Ret == SOCKET_ERROR)
    {
    
    
        printf("连接错误:: % d\n", GetLastError());
        return -1;
    }
    else
    {
    
    
        printf("成功连接到服务器!\n");
    }


    while (1)
    {
    
       

        SendMessage(ClientSocket);
    }
    /* close socket */
    closesocket(ClientSocket);
    WSACleanup();

    return 0;
}