/// <summary> /// 发送文件 /// </summary> /// <param name="fileLable">文件标签</param> /// <param name="fileName">文件地址</param> /// <param name="stateOne">StateBase</param> /// <returns>形成之后的数据</returns> internal byte[] Send(ref int fileLable, string fileName, StateBase stateOne) { int fileLenth = 0; FileStream fs; try { fs = new FileStream(fileName, FileMode.Open, FileAccess.Read); fileLenth = (int)fs.Length; } catch (Exception Ex) { throw new Exception(Ex.Message); } fileLable = RandomPublic.RandomNumber(16787); FileState fileState = new FileState(fileLable, fileLenth, fileName, fs); fileState.StateOne = stateOne; FS.Add(fileState); byte[] haveByte = EncryptionDecryptFile.FileHeadEncryption(fileState); return(haveByte); }
/// <summary> /// 发送方发过来的数据; /// </summary> /// <param name="receiveToDate">收到的数据</param> /// <param name="stateOne">StateBase</param> /// <returns>需要回复的数据</returns> internal byte[] ReceiveDateTO(byte[] receiveToDate, TransmitData stateOne) { byte[] haveDate = null; int fileLabel = ByteToDate.ByteToInt(3, receiveToDate); byte code = receiveToDate[2]; if (code == CipherCode._fileHeadCode)//说明发送过来的是文件是否传输的包头信息 { FileStream fs = null; FileState stateHead = EncDecFile.FileHeadDecrypt(receiveToDate, fs); string fileName = ReceiveMust.ReceiveOrNo(stateHead.FileLabel, stateHead.FileName, stateHead.FileLenth); if (fileName == "") { haveDate = EncDecFile.FileSevenEncryption(CipherCode._receiveUser, CipherCode._fileRefuse, fileLabel); } else { fs = CommonMethod.FileStreamWrite(fileName); if (fs == null) { haveDate = EncDecFile.FileSevenEncryption(CipherCode._receiveUser, CipherCode._fileRefuse, fileLabel); } else { ExpandBuffer(stateHead, stateOne); stateHead.FileName = fileName; stateHead.Filestream = fs; stateHead.StateFile = 1; FS.Add(stateHead); haveDate = EncDecFile.FileSevenEncryption(CipherCode._receiveUser, CipherCode._fileOk, fileLabel); } } return(haveDate); } FileState state = FileLabelToState(fileLabel); if (state == null) { if (code == CipherCode._fileCancel) { return(null); } else { return(EncDecFile.FileSevenEncryption(CipherCode._receiveUser, CipherCode._fileCancel, fileLabel)); } } else { switch (code) { case CipherCode._fileSubjectCode: //收到的是文件主体代码 haveDate = EncDecFile.FileSubjectDecrypt(state, receiveToDate); ReceiveMust.FileProgress(state); //输出文件进度 if (state.FileOkLenth >= state.FileLenth) //说明文件接收完成了 { FileRemove(fileLabel); ReceiveMust.ReceiveSuccess(fileLabel); } break; case CipherCode._fileCancel: //对方已经取消了这个文件; FileRemove(fileLabel); ReceiveMust.FileCancel(fileLabel); break; case CipherCode._sendStop: //对方暂停发送 FileStopIn(state, ReceiveMust); break; case CipherCode._fileContinue: //对方发过来一个续传的确认信息;你是否同意; ExpandBuffer(state, stateOne); //有可能是stateOne换过了; FileStopIn(state, ReceiveMust); //对方已经暂停了这个文件;我这边肯定也要先暂停掉 bool orStop = ReceiveMust.FileOrNotContingue(fileLabel); //让客户确认;是否续传 if (orStop) { haveDate = EncDecFile.ReceiveContingueEncryption(CipherCode._fileContinueOk, state); state.StateFile = 1; ReceiveMust.FileContinue(fileLabel); } else { haveDate = EncDecFile.FileSevenEncryption(CipherCode._receiveUser, CipherCode._fileContinueNo, fileLabel); } break; case CipherCode._fileContinueOk: //对方同意续传 state.StateFile = 1; ReceiveMust.FileContinue(fileLabel); haveDate = EncDecFile.FileSubjectDecrypt(state, receiveToDate); if (state.FileOkLenth >= state.FileLenth) //说明文件接收完成了 { FileRemove(fileLabel); ReceiveMust.ReceiveSuccess(fileLabel); } break; case CipherCode._fileContinueNo: //对方拒绝续传 ReceiveMust.FileNoContinue(fileLabel); FileStopIn(state, ReceiveMust); break; } } return(haveDate); }