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 int32_t TransTdcRecvData(int32_t channelId);
51 
52 int32_t TransDataListInit(void);
53 void TransDataListDeinit(void);
54 int32_t TransDelDataBufNode(int32_t channelId);
55 int32_t TransAddDataBufNode(int32_t channelId, int32_t fd);
56 int32_t TransTdcSendBytes(int32_t channelId, const char *data, uint32_t len);
57 int32_t TransTdcSendMessage(int32_t channelId, const char *data, uint32_t len);
58 
59 #ifdef __cplusplus
60 }
61 #endif
62 #endif // CLIENT_TRANS_TCP_DIRECT_MESSAGE_H