关于SOCKET传输文件的有关问题,望大侠指点啊
关于SOCKET传输文件的问题,望大侠指点啊!!急急急!!
各位大侠帮我看看,我这个代码可以传文本文件并且没有问题,但是传别的格式就有问题了,我传123k图片,能收到123k,但是文件是由损坏的,我用Uedit查看,里面数据感觉有小小的丢失,是不是我的fread函数有问题?
服务器端接收数据
#include <Winsock2.h>
#include <stdio.h>
void main()
{
WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested = MAKEWORD( 1, 1 );
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 )
{
return;
}
if ( LOBYTE( wsaData.wVersion ) != 1 || HIBYTE( wsaData.wVersion ) != 1 )
{
WSACleanup( );
return;
}
SOCKET sockSrv=socket(AF_INET,SOCK_DGRAM,0);
SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr=inet_addr("172.16.11.154");
addrSrv.sin_family=AF_INET;
addrSrv.sin_port=htons(6000);
bind(sockSrv,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));
SOCKADDR_IN addrClient;
char sendBuf[96];
//char tempBuf[200];
char recvBuf[95];
int len=sizeof(SOCKADDR);
int i=1;
FILE *fp=fopen("E:/data.jpg","w");
while(1)
{
memset(recvBuf,0,96);
recvfrom(sockSrv,recvBuf,95,0,(SOCKADDR*)&addrClient,&len);
//sprintf(tempBuf,"%s say : %s",inet_ntoa(addrClient.sin_addr),recvBuf);
printf("%s\n",recvBuf);
fwrite(recvBuf,1,strlen(recvBuf),fp);
fflush(fp);
strcpy(sendBuf,"i");
sendto(sockSrv,sendBuf,strlen(sendBuf)+1,0,(SOCKADDR*)&addrClient,len);
}
fclose(fp);
printf("Please input data:%d\n");
closesocket(sockSrv);
WSACleanup();
}
客户端发送数据
#include <Winsock2.h>
#include <stdio.h>
void main()
{
WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested = MAKEWORD( 1, 1 );
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 )
{
return;
}
if ( LOBYTE( wsaData.wVersion ) != 1 || HIBYTE( wsaData.wVersion ) != 1 )
{
WSACleanup( );
return;
}
SOCKET sockClient=socket(AF_INET,SOCK_DGRAM,0);
SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr=inet_addr("172.16.11.154");
addrSrv.sin_family=AF_INET;
addrSrv.sin_port=htons(6000);
char recvBuf[100];
char tempBuf[200];
int len=sizeof(SOCKADDR);
int i=0;
FILE *fp;
fp=fopen("F:/1.jpg","rb");
fseek(fp,0,SEEK_END);
int n,lenght=ftell(fp);
if(0!=lenght%95)
n=lenght/95+1;
else
n=lenght/95;
rewind(fp);
while(i<n)
{
//printf("Please input data:\n");
//gets(sendBuf);
i++;
int n=95*i;
char sendBuf[95];
memset(sendBuf,0,95);
//int j;
//for(j=0;j<95;j++)
// sendBuf[j]=' ';
fread(sendBuf, 1,95,fp);
sendto(sockClient,sendBuf,strlen(sendBuf),0,(SOCKADDR*)&addrSrv,len);
recvfrom(sockClient,recvBuf,100,0,(SOCKADDR*)&addrSrv,&len);
if('q'==recvBuf[0])
{
sendto(sockClient,"q",strlen("q")+1,0,
(SOCKADDR*)&addrSrv,len);
printf("Chat end!\n");
各位大侠帮我看看,我这个代码可以传文本文件并且没有问题,但是传别的格式就有问题了,我传123k图片,能收到123k,但是文件是由损坏的,我用Uedit查看,里面数据感觉有小小的丢失,是不是我的fread函数有问题?
服务器端接收数据
#include <Winsock2.h>
#include <stdio.h>
void main()
{
WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested = MAKEWORD( 1, 1 );
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 )
{
return;
}
if ( LOBYTE( wsaData.wVersion ) != 1 || HIBYTE( wsaData.wVersion ) != 1 )
{
WSACleanup( );
return;
}
SOCKET sockSrv=socket(AF_INET,SOCK_DGRAM,0);
SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr=inet_addr("172.16.11.154");
addrSrv.sin_family=AF_INET;
addrSrv.sin_port=htons(6000);
bind(sockSrv,(SOCKADDR*)&addrSrv,sizeof(SOCKADDR));
SOCKADDR_IN addrClient;
char sendBuf[96];
//char tempBuf[200];
char recvBuf[95];
int len=sizeof(SOCKADDR);
int i=1;
FILE *fp=fopen("E:/data.jpg","w");
while(1)
{
memset(recvBuf,0,96);
recvfrom(sockSrv,recvBuf,95,0,(SOCKADDR*)&addrClient,&len);
//sprintf(tempBuf,"%s say : %s",inet_ntoa(addrClient.sin_addr),recvBuf);
printf("%s\n",recvBuf);
fwrite(recvBuf,1,strlen(recvBuf),fp);
fflush(fp);
strcpy(sendBuf,"i");
sendto(sockSrv,sendBuf,strlen(sendBuf)+1,0,(SOCKADDR*)&addrClient,len);
}
fclose(fp);
printf("Please input data:%d\n");
closesocket(sockSrv);
WSACleanup();
}
客户端发送数据
#include <Winsock2.h>
#include <stdio.h>
void main()
{
WORD wVersionRequested;
WSADATA wsaData;
int err;
wVersionRequested = MAKEWORD( 1, 1 );
err = WSAStartup( wVersionRequested, &wsaData );
if ( err != 0 )
{
return;
}
if ( LOBYTE( wsaData.wVersion ) != 1 || HIBYTE( wsaData.wVersion ) != 1 )
{
WSACleanup( );
return;
}
SOCKET sockClient=socket(AF_INET,SOCK_DGRAM,0);
SOCKADDR_IN addrSrv;
addrSrv.sin_addr.S_un.S_addr=inet_addr("172.16.11.154");
addrSrv.sin_family=AF_INET;
addrSrv.sin_port=htons(6000);
char recvBuf[100];
char tempBuf[200];
int len=sizeof(SOCKADDR);
int i=0;
FILE *fp;
fp=fopen("F:/1.jpg","rb");
fseek(fp,0,SEEK_END);
int n,lenght=ftell(fp);
if(0!=lenght%95)
n=lenght/95+1;
else
n=lenght/95;
rewind(fp);
while(i<n)
{
//printf("Please input data:\n");
//gets(sendBuf);
i++;
int n=95*i;
char sendBuf[95];
memset(sendBuf,0,95);
//int j;
//for(j=0;j<95;j++)
// sendBuf[j]=' ';
fread(sendBuf, 1,95,fp);
sendto(sockClient,sendBuf,strlen(sendBuf),0,(SOCKADDR*)&addrSrv,len);
recvfrom(sockClient,recvBuf,100,0,(SOCKADDR*)&addrSrv,&len);
if('q'==recvBuf[0])
{
sendto(sockClient,"q",strlen("q")+1,0,
(SOCKADDR*)&addrSrv,len);
printf("Chat end!\n");