SOCKET发送文件

简单形容一下模式   S/5×C   我这个程序里面这样定义的。。。

 

意思就是说，我一个服务器，接收来自五个客户机发来的消息。。

 

代码有些乱。也不知道自己处理得怎么样，发到博客上免得被我删了以后难得重做。呃。。。。懒人。。。

 

SERVER.C

 

#include <winsock.h> #include <windows.h> #include <stdio.h> #include <string.h> WSADATA wd; SOCKET listenSocket; SOCKET connSocket[5]; int connefficacy[5]={0,0,0,0,0}; int nconn=0;DWORD WINAPI RecvData(PVOID pParam){int i=0;int len=0;char buffer[1024*32];FILE* file=NULL;file=fopen("a.rar","wb");i=(*(int *)pParam);if (i!=0)i=i-1;while(1){// fseek(file,1,SEEK_END);if ((len=recv(connSocket[i],buffer,1024*32,0))==SOCKET_ERROR) { printf("recv error %d/n",WSAGetLastError()); break ;return 0; }buffer[len]='/0'; fwrite(buffer,1,len,file);if( len == 0 )break ;}fclose(file);closesocket(connSocket[i]);connefficacy[i]=0;printf("%d/n",connefficacy[i]);ExitThread(0);return 0;}DWORD WINAPI AcceptThread(PVOID pParam){HANDLE ThreadHandle=NULL;SOCKADDR_IN saConn; int len=sizeof(saConn);SOCKET listenSocket;listenSocket=*(SOCKET *)pParam;while(1){nconn=0;if ((connSocket[nconn]=accept(listenSocket,(SOCKADDR *)&saConn,&len))==INVALID_SOCKET) {printf("accept error : %d/n",WSAGetLastError()); WSACleanup(); ExitThread(0);return 0; }printf("%d/n",nconn);T:if (connefficacy[nconn]==1){printf("the %d socket is running ... /n",nconn);nconn++;goto T;}ThreadHandle=CreateThread(NULL,0,RecvData,(LPVOID)&nconn,0,0);if(ThreadHandle==NULL){printf("Create thread error/n");continue;}connefficacy[nconn]=1;nconn++;if (nconn>=5)nconn=0;}return 0;}int main(void) { SOCKADDR_IN saListen; u_short port=5000; int i=0; DWORD dTh=0;HANDLE handle=NULL;char servercmd[10]; WSAStartup(MAKEWORD(2,2),&wd); listenSocket=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP); memset(&saListen, 0, sizeof(saListen)); saListen.sin_family=AF_INET; saListen.sin_port=htons(port); saListen.sin_addr.S_un.S_addr=INADDR_ANY; if ((bind(listenSocket,(SOCKADDR *)&saListen,sizeof(saListen)))==SOCKET_ERROR) { printf("aa%d/n",WSAGetLastError()); WSACleanup(); return 0; } if ((listen(listenSocket,5))==SOCKET_ERROR) { printf("2%d/n",WSAGetLastError()); WSACleanup(); return 0; } handle=CreateThread(NULL,0,AcceptThread,(LPVOID)&listenSocket,0,&dTh); if (handle==NULL){printf("y.y /n");closesocket(listenSocket);WSACleanup();return 0;}printf("Server running.../n");L:scanf("%s",servercmd);if (strcmp(servercmd,"exit")!=0)goto L; return 0;}

 

CLIENT.C

 

#include <winsock.h> #include <stdio.h> #include <windows.h> #include <string.h> int main(void) { FILE* file=NULL; WSADATA wd; SOCKET cSocke; SOCKADDR_IN sa; int port=5000; char buffer[1024*32]; int ret=0; int len=0; int sendSize=0;DWORD filesize=0; if(WSAStartup(MAKEWORD(2,2),&wd)!=0) printf("0/n"); if((cSocke=socket(AF_INET,SOCK_STREAM,IPPROTO_TCP))==INVALID_SOCKET) { printf("1/n"); WSACleanup(); return 0; } memset(&sa, 0, sizeof(sa)); sa.sin_family=AF_INET; sa.sin_port=htons(port); sa.sin_addr.S_un.S_addr=inet_addr("127.0.0.1"); if ((ret=connect(cSocke,(struct sockaddr*)&sa,sizeof(sa)))==SOCKET_ERROR) { printf("a%d/n",WSAGetLastError()); printf("%d/n",ret); WSACleanup(); return 0; } file=fopen("d://downloads//mfc.rar","rb");filesize=GetFileSize(file,NULL);memset(buffer,0, sizeof(buffer)); while( !feof( file ) ){len = fread( buffer, 1, 1024*32, file );send( cSocke, buffer, len, 0 );}printf( "ok /n" );getchar();fclose(file);getchar(); if ((closesocket(cSocke))==SOCKET_ERROR)printf("%d/n",WSAGetLastError()); WSACleanup(); return 0;}

 

代码就这么多，写得不正确的希望多家多多指证，感激不尽。

 

希望和我一样是初学者的三思后再抄。。因为我不知道哪些地方不合适。。因为在论坛上好多朋友都说我的有很多错。。

 

我试过发送图片、988MB的RAR文件，都是正常的。

 

睡觉咯！   - - !!