printf("已接收： %4.2f％\n",cent); recv(serConn,receiveBuf,SIZE+1,0); fwrite(receiveBuf,1,SIZE,fp); } else { recv(serConn,receiveBuf,length+SIZE-x+1,0); printf("文件接收完毕\n"); fwrite(receiveBuf,1,length+SIZE-x,fp); fclose(fp); break; } } } closesocket(serConn);//关闭 WSACleanup();//释放资源的操作 system("pause"); } 客户端 #include #include #pragma comment(lib,"ws2_32.lib") #define SIZE 1024*8 void main() { FILE *fp; int err; int length=0; SOCKET clientSocket; SOCKADDR_IN clientsock_in; char receiveBuf[100]={"0"}; char ip_addr[16]={"127.0.0.1"}; WORD versionRequired; WSADATA wsaData; versionRequired=MAKEWORD(1,1); err=WSAStartup(versionRequired,&wsaData);//协议库的版本信息 if (!err) { printf("客户端嵌套字已经打开!\n"); } 

else { printf("客户端的嵌套字打开失败!\n"); return;//结束 } clientSocket=socket(AF_INET,SOCK_STREAM,0); /*printf("请输入主机 IP：\n"); scanf("%s",ip_addr);*/ //连接服务器 clientsock_in.sin_addr.S_un.S_addr=inet_addr(ip_addr); clientsock_in.sin_family=AF_INET; clientsock_in.sin_port=htons(6000); connect(clientSocket,(SOCKADDR*)&clientsock_in,sizeof(SOCKADDR));// 开 始连接 recv(clientSocket,receiveBuf,101,0); printf("%s\n",receiveBuf); char path[100]={"0"}; gets(path); int i=0; do { printf("请输入文件地址：\n"); gets(path); while(path[i]!='\0') { if(path[i]=='/') path[i]='\\'; i++; } i=0; if((fp=fopen(path,"rb"))==NULL) { i=1; printf("文件未打开\n"); } }while(i); fseek(fp,0L,SEEK_END); length=ftell(fp); printf("待传送文件大小： %d\n",length); printf("文件已经打开 等待主机消息......\n"); //得到主机开始传送消息 recv(clientSocket,receiveBuf,101,0); printf("%s\n",receiveBuf); if(strcmp(receiveBuf,"开始传送")==0) 

{ //传送文件长度 char sendBuf[20]; ltoa(length,sendBuf,10); send(clientSocket,sendBuf,21,0); fseek(fp,0L,SEEK_SET); //传送文件 long int y=0; double cent; char trans[SIZE]; while(!feof(fp)) { fread(trans,1,SIZE,fp); y=y+SIZE; if(y