用戶端代碼:
#include <Winsock2.h>
#include <cstdio>
#include <fstream>
#pragma comment(lib,"ws2_32.lib")
using namespace std;
size_t getSize()
{
FILE * file;
file = fopen("1.jpg", "rb");
size_t sizeOfPic;
fseek(file, 0, SEEK_END); ///将檔案指針移動檔案結尾
sizeOfPic = ftell(file); ///求出目前檔案指針距離檔案開始的位元組數
fclose(file);
return sizeOfPic;
}
void main()
{
WSADATA wsaData;
SOCKET sockClient;//用戶端Socket
SOCKADDR_IN addrServer;//服務端位址
WSAStartup(MAKEWORD(2, 2), &wsaData);
//建立用戶端socket
sockClient = socket(AF_INET, SOCK_STREAM, 0);
//定義要連接配接的服務端位址
addrServer.sin_addr.S_un.S_addr = inet_addr("127.0.0.1");//目标IP(127.0.0.1是回送位址)
addrServer.sin_family = AF_INET;
addrServer.sin_port = htons(6000);//連接配接端口6000
//連接配接到服務端
connect(sockClient, (SOCKADDR*)&addrServer, sizeof(SOCKADDR));
//發送資料
// char message[20] = "HelloSocket!";
char recvBuf[30];
char size[20];
size_t pic_size = getSize();
itoa(pic_size, size, 10);
send(sockClient, size, strlen(size) + 1, 0);
recv(sockClient, recvBuf, 1024, 0);
if (strcmp(recvBuf, "success!") == 0)
{
printf("%s\n", recvBuf);
FILE * file;
file = fopen("1.jpg", "rb");
char buf[1024];
while (!feof(file))
{
memset(buf, 0, sizeof(buf));
size_t readlen = fread(buf, sizeof(char), sizeof(buf), file);
send(sockClient, buf, readlen, 0);
}
fclose(file);
}
//關閉socket
closesocket(sockClient);
WSACleanup();
}
服務端代碼:
#include <Winsock2.h>
#include <cstdio>
#pragma comment(lib,"ws2_32.lib")
void main()
{
WSADATA wsaData;
SOCKET sockServer;
SOCKADDR_IN addrServer;
SOCKET sockClient;
SOCKADDR_IN addrClient;
WSAStartup(MAKEWORD(2, 2), &wsaData);
sockServer = socket(AF_INET, SOCK_STREAM, 0);
addrServer.sin_addr.S_un.S_addr = htonl(INADDR_ANY);//INADDR_ANY表示任何IP
addrServer.sin_family = AF_INET;
addrServer.sin_port = htons(6000);//綁定端口6000
bind(sockServer, (SOCKADDR*)&addrServer, sizeof(SOCKADDR));
//Listen監聽端
listen(sockServer, 5);//5為等待連接配接數目
printf("伺服器已啟動:\n監聽中...\n");
int len = sizeof(SOCKADDR);
char sendBuf[1024];//發送至用戶端的字元串
char recvBuf[1024];//接受用戶端傳回的字元串
char flag[30] = "success!";
//會阻塞程序,直到有用戶端連接配接上來為止
sockClient = accept(sockServer, (SOCKADDR*)&addrClient, &len);
//接收并列印用戶端資料
recv(sockClient, recvBuf, 1024, 0);
int size = atoi(recvBuf);
if (size > 0)
{
send(sockClient, flag, strlen(flag) + 1, 0);
printf("%s\n", recvBuf);
FILE * file;
file = fopen("1.jpg", "wb");
while (size > 0)
{
int recvLen = recv(sockClient, recvBuf, 1024, 0);
size_t writelen = fwrite(recvBuf, sizeof(char), recvLen, file);
size -= recvLen;
}
fclose(file);
}
//關閉socket
closesocket(sockClient);
WSACleanup();
}