private bool RecvFileStartAnswer() { int len = this.client_.RecvPacket(); this.client_.CopyPacket(this.recvBuffer_, len); int index = 0; short cmdLen = Tools.GetShort(recvBuffer_, ref index); short cmdValue = Tools.GetShort(recvBuffer_, ref index); short status = Tools.GetShort(recvBuffer_, ref index); long existSize = Tools.GetLong(recvBuffer_, ref index); if (status != 0) { //说明失败 TcpServer.GetInstance().ShowMessage("下载文件 " + this.current_.path + " 失败: " + Tools.Hex2String(recvBuffer_, len)); return(false); } if (existSize == this.current_.size) { //说明该文件已存在下位机 } try { this.filestream_.Seek(existSize, SeekOrigin.Begin); } catch (System.Exception) { return(false); } return(true); }