1 /* 2 * Copyright (c) 2021 Huawei Device Co., Ltd. 3 * Licensed under the Apache License, Version 2.0 (the "License"); 4 * you may not use this file except in compliance with the License. 5 * You may obtain a copy of the License at 6 * 7 * http://www.apache.org/licenses/LICENSE-2.0 8 * 9 * Unless required by applicable law or agreed to in writing, software 10 * distributed under the License is distributed on an "AS IS" BASIS, 11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 * See the License for the specific language governing permissions and 13 * limitations under the License. 14 */ 15 16 #ifndef CLIENT_TRANS_TCP_DIRECT_MESSAGE_H 17 #define CLIENT_TRANS_TCP_DIRECT_MESSAGE_H 18 19 #include "softbus_def.h" 20 21 #ifdef __cplusplus 22 extern "C" { 23 #endif 24 25 #define DC_DATA_HEAD_SIZE 16 26 #ifndef MAGIC_NUMBER 27 #define MAGIC_NUMBER 0xBABEFACE 28 #endif 29 30 enum { 31 FLAG_BYTES = 0, 32 FLAG_ACK = 1, 33 FLAG_MESSAGE = 2, 34 FILE_FIRST_FRAME = 3, 35 FILE_ONGOINE_FRAME = 4, 36 FILE_LAST_FRAME = 5, 37 FILE_ONLYONE_FRAME = 6, 38 FILE_ALLFILE_SENT = 7, 39 FLAG_ASYNC_MESSAGE = 8, 40 FLAG_SET_LOW_LATENCY = 9 41 }; 42 43 typedef struct { 44 uint32_t magicNumber; 45 int32_t seq; 46 uint32_t flags; 47 uint32_t dataLen; 48 } __attribute__((packed)) TcpDataPacketHead; 49 50 typedef struct { 51 uint32_t magicNumber; 52 uint8_t tlvCount; 53 int32_t seq; 54 uint32_t dataSeq; 55 uint32_t flags; 56 uint32_t dataLen; 57 bool needAck; 58 } __attribute__((packed)) TcpDataTlvPacketHead; 59 60 int32_t TransTdcRecvData(int32_t channelId); 61 62 int32_t TransDataListInit(void); 63 void TransDataListDeinit(void); 64 int32_t TransDelDataBufNode(int32_t channelId); 65 int32_t TransAddDataBufNode(int32_t channelId, int32_t fd); 66 int32_t TransTdcSendBytes(int32_t channelId, const char *data, uint32_t len, bool needAck); 67 int32_t TransTdcAsyncSendBytes(int32_t channelId, const char *data, uint32_t len, uint32_t dataSeq); 68 int32_t TransTdcSendMessage(int32_t channelId, const char *data, uint32_t len); 69 70 #ifdef __cplusplus 71 } 72 #endif 73 #endif // CLIENT_TRANS_TCP_DIRECT_MESSAGE_H