vc++实现文件传送

发送

#include <stdio.h>
#include <winsock2.h>
#pragma comment(lib, "ws2_32.lib")
void main() {
// 初始化

WSADATA wsaData;
int iResult = WSAStartup( MAKEWORD(2,2), &wsaData );
if ( iResult != NO_ERROR )
printf("Error at WSAStartup()/n");

// 建立socket
SOCKET server;
server = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP );

if ( server == INVALID_SOCKET ) {
printf( "Error at socket(): %ld/n", WSAGetLastError() );
WSACleanup();
return;
}

// 绑定socket
sockaddr_in service;

service.sin_family = AF_INET;
service.sin_addr.s_addr = inet_addr( "127.0.0.1" );
service.sin_port = htons(8000);

if ( bind( server, (SOCKADDR*) &service, sizeof(service) ) == SOCKET_ERROR ) {
printf( "bind() failed./n" );
closesocket(server);
return;
}

// 监听 socket
if ( listen( server, 1 ) == SOCKET_ERROR )
printf( "Error listening on socket./n");

// 接受连接
SOCKET AcceptSocket;

printf( "Waiting for a client to connect.../n" );
while (1) {
AcceptSocket = SOCKET_ERROR;
while ( AcceptSocket == SOCKET_ERROR ) {
AcceptSocket = accept( server, NULL, NULL );
}
printf( "Client Connected./n");
server = AcceptSocket;
break;
}

// 发送接受数据
// int bytesSent;
char sendbuf[1024];//发送缓冲区
//DWORD dwFileSize;//文件大小
DWORD dwRead;
BOOL bRet;
char filename[]="c://MyMain.java";
HANDLE hFile=CreateFile(filename,GENERIC_READ,0,0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0);
//dwFileSize=GetFileSize(hFile,NULL);
while(true)
{
bRet=ReadFile(hFile,sendbuf,1024,&dwRead,NULL);
if(bRet==FALSE)
{
MessageBox(NULL,"Read Buf ERROR!","Error",MB_OK);
break;
}
else if(dwRead==0)
{
MessageBox(NULL,"Send file OK!","OK",MB_OK);
break;
}
else
{
send(server,sendbuf,dwRead,0);
}
};
CloseHandle(hFile);
return;
}

接收

#include <stdio.h>
#include <winsock2.h>
#pragma comment(lib, "ws2_32.lib")
void main() {

// 初始化 Winsock.
WSADATA wsaData;
int iResult = WSAStartup( MAKEWORD(2,2), &wsaData );
if ( iResult != NO_ERROR )
printf("Error at WSAStartup()/n");

// 建立socket socket.
SOCKET client;
client = socket( AF_INET, SOCK_STREAM, IPPROTO_TCP );

if ( client == INVALID_SOCKET ) {
printf( "Error at socket(): %ld/n", WSAGetLastError() );
WSACleanup();
return;
}

// 连接到服务器.
sockaddr_in clientService;

clientService.sin_family = AF_INET;
clientService.sin_addr.s_addr = inet_addr( "127.0.0.1" );
clientService.sin_port = htons( 8000 );

if ( connect( client, (SOCKADDR*) &clientService, sizeof(clientService) ) == SOCKET_ERROR) {
printf( "Failed to connect./n" );
WSACleanup();
return;
}
char recvbuf[1024];//发送缓冲区
int read;
DWORD dwWrite;
BOOL bRet;
// 发送并接收数据.
char filename[]="c://syn.txt";
HANDLE hFile=CreateFile(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)
{
MessageBox(NULL,"Write Buf ERROR!","Error",MB_OK);
break;
}

}
MessageBox(NULL,"Receive file OK!","OK",MB_OK);
return;
}