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目前进度：已成功实现客户端向服务端照片的传输

客户端（基于Linux平台）：

#include <stdio.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <string.h>
#include <netinet/in.h>
#include <unistd.h>
#include <stdlib.h>
#include <arpa/inet.h>
#define Server_Port 8600
#define Default_Server_IP ""
#define Default_Client_IP ""
#define Img_Default_Path  "D:/result/%d.bmp"
#define _1KB 1024

void Judge_cnnt(int x, sockaddr_in y);

void main() 
{
    
    int clit_sckt = socket(AF_INET, SOCK_DGRAM, 0);
    if (clit_sckt == -1)
    {
    
        perror("Socket created failed, exited: ");
        exit(1);
    }
    struct sockaddr_in serv;
    bzero(&serv, sizeof(serv));
    serv.sin_family = AF_INET;
    serv.sin_addr.s_addr = inet_addr(Default_Server_IP); 
    serv.sin_port = htons(Server_Port);

  Judge_cnnt(connect(clit_sckt,(struct sockaddr*)&serv,sizeof(struct sockaddr_in)),serv);
      char path[];
      int init = 0;
      sprintf(path, Img_Default_Path,init);
      int img_fd = open(path, O_RDONLY);
      if (img_fd == -1)
      {
    
          perror("open bmp failed!\n");
          return -1;
      }
      int img_size = lseek(img_fd, 0, SEEK_END);
      char* buff_size = (char*)malloc(sizeof(img_size));
      sprintf(buff_size, "%d", img_size);
      char* buff = (char*)malloc(_1KB);
      int  sendlen, read_init;
      lseek(img_fd, 0, SEEK_SET);
      close(img_fd);
      sendto(clit_sckt, buff_size, strlen(buff_size), 0, (sockaddr*)&serv, sizeof(serv));
      for (int i = 0; i >= 0; i++)
      {
    
      sprintf(path, Img_Default_Path, i);
      sendlen = 0, read_init = 0;
      img_fd = open(path, O_RDONLY);
      while (sendlen < img_size)
      {
    
          read_init = read(img_fd, buff, _1KB);
          sendlen = sendlen + sendto(clit_sckt, buff, read_init, 0, (sockaddr*)&serv, sizeof(serv));
      }
      close(img_fd);
      char complete[];
      int addr_len = sizeof(serv)
          if (recvfrom(clit_sckt, complete, 9, 0, (sockaddr*)&serv, sizeof(serv),(socklen_t*)&addr_len) != 0)
              continue;
  }
    close(clit_sckt);
    buff = NULL;
}

void Judge_cnnt(int x, sockaddr_in y)
{
    
    if (x == 0)
    {
    
        char buffer[16];
        printf("Successfully connected to %s\n", inet_ntop(AF_INET, &y.sin_addr, buffer, 16));
        return;
    }
    else
    {
    
        perror("Connect failed , exited\n");
        exit(1);
    }
}

服务端（基于Windows平台）：

//链接库区
#pragma comment(lib, "Ws2_32.lib")
#pragma comment(lib, "opencv_world345.lib")


//引用头文件区
#include <opencv2/core.hpp>                
#include <opencv2/imgcodecs.hpp>        
#include <opencv2/highgui.hpp>            
#include <opencv2\imgproc.hpp>
#include <opencv2/opencv.hpp>
#include<stdio.h>
#include<iostream>
#include<WINSOCK2.h>
#include <stdlib.h>
#include<conio.h>
#include <WS2tcpip.h>
#include<windows.h>


//定义区
#define Default_File_Path "D:/result/%d.bmp"
#define Default_Server_IP ""
#define Default_Client_IP ""
#define Default_Server_port 8600
#define _1KB 1024


//声明区
void Judge_skt_crt(int x);
void Judge_winsock_init(int x);
void Judge_bind(int x, int socket);
void Judge_recvfr(int x, int socket, sockaddr_in y);
int Select();



//函数体部分
void main(void)
{
    
	WSADATA wsadata;                                                  //用于存储Winsock的详细资料
	int init = WSAStartup(MAKEWORD(1, 0), &wsadata);                    //初始化WInsock
	Judge_winsock_init(init);
	int Ser_sckt = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);           //创建socket
	Judge_skt_crt(Ser_sckt);
	struct sockaddr_in serv, clit;
	serv.sin_family = AF_INET;                                        //定义地址类型
	serv.sin_port = htons(Default_Server_port);                        //定义端口号
	printf("是否使用默认IP设置(y/n):");
	int result = Select();
	if (result == 1)
	{
    
		inet_pton(AF_INET, Default_Server_IP, &serv.sin_addr.S_un.S_addr);
	}
	else
	{
    
		char buffer1[16], buffer2[16];                                 //用于存储字符串形式的IP地址
		printf("\n请输入服务端IP:");
		gets_s(buffer1, 16);
		inet_pton(AF_INET, buffer1, &serv.sin_addr.S_un.S_addr);
	}
	int Judge = bind(Ser_sckt, (sockaddr*)&serv, sizeof(sockaddr_in));    //绑定套接字与本地地址
	Judge_bind(Judge, Ser_sckt);

	/*struct timeval tv;                                                  //进行超时设置
	tv.tv_sec = 30000;                                                    //实际单位为毫秒：1000=1秒
	tv.tv_usec = 0;
	if (setsockopt(Ser_sckt, SOL_SOCKET, SO_RCVTIMEO, (char*)&tv, sizeof(tv)) < 0)
	{
		printf("套接字不支持“SO_RCVTIMEO”选项\n");
		WSACleanup();
		closesocket(Ser_sckt);
		exit(1);
	}*/
	int addr_len = sizeof(clit);
	char* connect = (char*)malloc(33);
	memset(connect, 0, 33);
	int recvlen = recvfrom(Ser_sckt, connect, 33, 0, (struct sockaddr*)&clit, &addr_len);
	Judge_recvfr(recvlen, Ser_sckt, clit);
	int img_size = atoi(connect);
	if (connect)
		free(connect);
	FILE* fp;
	char path[50];
	char* buff = (char*)malloc(_1KB);
	int recv_init;
	for(int i=0;i>=0;i++)
	{
     
		sprintf(path,Default_File_Path,i);
	fopen_s(&fp, path, "a+");
	if (!fp)
	{
    
		printf("文件打开失败，已退出\n");
		printf("错误代码：%d", WSAGetLastError());
		WSACleanup();
		closesocket(Ser_sckt);
		exit(1);
	}


	memset(buff, 0, _1KB);
		recvlen = 0;
		recv_init = 0;
		while (recvlen < img_size)
		{
    
			recv_init = recvfrom(Ser_sckt, buff, _1KB, 0, (struct sockaddr*)&clit, &addr_len);
			recvlen = recvlen + recv_init;
			fwrite(buff, recv_init, 1, fp);
		}

		fflush(fp);
		fclose(fp);
		cv::Mat in_image(640, 480, CV_8UC3);          //前两个参数分别为生成图片宽度与高度
		in_image = cv::imread(path, 3);
		cvNamedWindow("Stream_image", CV_WINDOW_AUTOSIZE);
		cv::imshow("Stream_image", in_image);
		cv::waitKey(25);
		in_image.release();
		char complete[9] = {
     "finished" };
		sendto(Ser_sckt, complete, sizeof(complete), 0, (struct sockaddr*)&clit, addr_len);
	}
	if (buff)
		free(buff);
	WSACleanup();
	closesocket(Ser_sckt);
}
void Judge_skt_crt(int x)                            //用以判断是否已成功创建socket
{
    

	if (x == -1)
	{
    
		perror("创建套接字失败，已退出\n");
		printf("错误代码：%d", WSAGetLastError());
		WSACleanup();
		exit(1);
	}
	else
	{
    
		printf("创建套接字成功\n");
		return;
	}
}

void Judge_winsock_init(int x)                        //用以判断是否已成功初始化Winsock
{
    
	if (x != 0)
	{
    
		perror("Winsock初始化失败，已退出\n");
		printf("错误代码：%d", WSAGetLastError());
		exit(1);
	}
	else
	{
    
		printf("Winsock初始化成功\n");
		return;
	}
}


void Judge_bind(int x, int y)                                             //用于判定是否成功绑定套接字与端口
{
    
	if (x == -1)
	{
    
		printf("\n绑定套接字和端口错误，已退出\n");
		printf("错误代码：%d", WSAGetLastError());
		WSACleanup();
		closesocket(y);
		exit(1);
	}
	else
	{
    
		printf("\n绑定套接字和端口成功\n");
		return;
	}
}

void Judge_recvfr(int x, int socket, sockaddr_in y)
{
    
	if (x < 0)
	{
    
		/*if (x == EWOULDBLOCK || x == EAGAIN)
		{
			printf("接收定位超时，已退出\n");
			WSACleanup();
			closesocket(socket);
			exit(1);
		}
		else
		{*/
		printf("接收定位失败: % d，已退出\n", x);
		printf("错误代码：%d", WSAGetLastError());
		WSACleanup();
		closesocket(socket);
		exit(1);
		//}
	}
	else
	{
    
		char buff_ip[16];
		printf("正在接收来自 %s 的数据\n", inet_ntop(AF_INET, &y.sin_addr, buff_ip, sizeof(buff_ip)));
	}
}

int Select()                               //用于选择
{
    
	while (1)
	{
    
		char S = _getche();
		switch (S)
		{
    
		case 'y':
			return 1;
		case 'n':
			return 0;
		default:
			printf("\n输入错误，请重新输入：");
			continue;
		}
	}
}

**

未完待续…

**

接下来的任务：
①实现客户端向服务端的单张图片传输，并在服务端输出显示。

②完成客户端摄像头图像读取读取模块的编写
③实现实时视频传输
④将服务端源代码进行多个文件的模块化分割
⑤…