SOCKET------10.15socke最基础的单张照片传输

 Server

#include
#include
#include
#pragma comment(lib,"ws2_32.lib")

#define MAXLINE 4096
using namespace std;

int main()
{
	//SOCKET套接字初始化
	WORD socketVersion = MAKEWORD(2, 2);
	WSADATA wsaData;
	if(WSAStartup(socketVersion,&wsaData)!=0)
	{
		return 0;
	}

	SOCKET server;
	sockaddr_in server_addr;	
	if((server = socket(AF_INET, SOCK_STREAM, 0))==INVALID_SOCKET)
	{
		cout << "socket server error!";
		return 0;
	}
	
	server_addr.sin_family = AF_INET;
	server_addr.sin_port = htons(8888);
	//server_addr.sin_addr.S_un.S_addr = INADDR_ANY;
	server_addr.sin_addr.s_addr = inet_addr("192.168.1.2");
	
	if((bind(server,(LPSOCKADDR)&server_addr,sizeof(server_addr))== SOCKET_ERROR))
	{
		cout << "bind error";
		return 0;
	}

	if(listen(server,5)==SOCKET_ERROR)
	{
		cout << "listen error!";
		return 0;
	}

	SOCKET client;
	sockaddr_in client_addr;
	
	int clientSize = sizeof(client_addr);
	FILE *fp;
	int ret;

	char buff[MAXLINE];

	if((fp=fopen("image1.bmp","wb"))== NULL)
	{
		cout << "fopen is error";
		return 0;
	}

			
	while(1)
	{
		client = accept(server, (SOCKADDR*)&client_addr, &clientSize);
		cout << "等待连接中" << endl;	
		if(client == -1)
		{
			cout << "accept error!" << endl;
			continue;
		}
		cout << "接收到" << inet_ntoa(client_addr.sin_addr) <<"的连接！"<< endl;
		
		while(1)
		{
			ret = recv(client, buff, MAXLINE,0);
			if (ret == 0 )
			{
				break;
			}			
			fwrite(buff, 1, ret,fp);
		}
		buff[ret] = '\0';

		cout << buff << endl;

		closesocket(client);
		fclose(fp);
	}

	closesocket(server);
	WSACleanup();
	return 0;
}

Client 

#include
#include
#include
#include
#include
#include
#include
#include
#include
#include

using namespace std;

int PORT=8888;
char *IP="192.168.1.2";
#define MAXLINE 4096
int main()
{
    int client;

    struct sockaddr_in server_addr;
    struct sockaddr_in client_addr;

    if((client=socket(AF_INET,SOCK_STREAM,0))<0)
    {
        cout<<"client error!"<