WINSOCK Transfer File

SERVER:

Send_server.cpp:Defines the entry point for the console application.//#include "stdafx.h" #include <winsock2.h># Include <stdio.h> #pragma comment (lib, "Ws2_32.lib") int main (int argc,char** argv) {wsadata wsadata;if (WSAStartup (Makeword (2,2), &wsadata) = =-1) {printf ("WSAStartup error\r\n");} Socket server;server = socket (af_inet,sock_stream,ipproto_tcp), if (server = = Socket_error) {printf ("Server socket start Error\r\n "); return 0;} sockaddr_in server_service;server_service.sin_family = Af_inet;server_service.sin_port = htons (8000); Server_ Service.sin_addr. S_un. S_ADDR = inet_addr ("127.0.0.1"); if (Bind (server, (sockaddr*) &server_service,sizeof (server_service)) = = Socket_ ERROR) {printf ("Bind Port error\r\n"); return 0;} if (listen (server,5) = = Socket_error) {printf ("Listen client error\r\n"); return 0;} SOCKET acceptsocket;printf ("Wait Accept recv data\r\n"); while (1) {acceptsocket = Socket_error;while (AcceptSocket = = SOCKET_ERROR) {AcceptSocket = accept (server,null,null);} printf ("Client connetcd\r\n "); server = Acceptsocket;break;} Char sendbuf[1024] = {0};D word dwread; BOOL Bret;char filename[] = "Test.exe"; HANDLE hfile = Createfilea (filename,generic_read,0,0,open_existing,file_attribute_normal,0); while (true) {bret = ReadFile (Hfile,sendbuf,1024,&dwread,null); if (bret = = False) {printf ("read file error\r\n"); else if (Dwread = = 0) {printf ("Send file OK"); Else{send (server,sendbuf,dwread,0);}} CloseHandle (hfile); WSACleanup (); return 0;}

　　

CLIENT:

Send_client.cpp:Defines the entry point for the console application.//#include "stdafx.h" #include <stdio.h> #inc Lude <WinSock2.h> #pragma comment (lib, "Ws2_32.lib") int main () {wsadata Wsadata;int Iresult = WSAStartup (Makeword ( 2,2), &wsadata); if (iresult! = no_error) {printf ("Errpr at wsastartup\r\n");} Socket client;client = socket (af_inet,sock_stream,ipproto_tcp), if (client = = Invalid_socket) {printf ("Error at socket () :%ld\r\n ", WSAGetLastError ()); WSACleanup (); return 0;} sockaddr_in clientservice;clientservice.sin_family = Af_inet;clientservice.sin_port = htons (8000); ClientService.sin _addr. S_un. S_ADDR = inet_addr ("127.0.0.1"); if (Connect (client, (sockaddr*) &clientservice,sizeof (clientservice)) = = Socket_ ERROR) {printf ("faied to error\r\n"); WSACleanup (); return 0;} Char recvbuf[1024] = {0};int Read;dword dwwrite; BOOL Bret;char filename[] = "Test.exe"; HANDLE hfile = Createfilea (filename,generic_write,0,0,create_always,file_attribute_normal,0); while (true) {read = Recv (client,recvbuf,1024,0); if (read ==-1) {break;} BRet = WriteFile (Hfile,recvbuf,read,&dwwrite,null), if (BRet = = FALSE) {MessageBoxW (null,_t ("Write buffer error\r\n "), NULL,MB_OK);}} MessageBoxW (null,_t ("Write buffer susccess\r\n"), NULL,MB_OK); return 0;}

Before sending a file, we can use GetFileSize to get the size of the file open.

WINSOCK Transfer File