1 /*
2 * Copyright (c) 2021-2023 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 #include "stream_client.h"
17
18 #include "include/util.h"
19
20 #undef LOG_TAG
21 #define LOG_TAG "StreamClient"
22
23 namespace OHOS {
24 namespace Msdp {
25 namespace DeviceStatus {
26
StreamClient()27 StreamClient::StreamClient()
28 {
29 CALL_DEBUG_ENTER;
30 }
31
~StreamClient()32 StreamClient::~StreamClient()
33 {
34 CALL_DEBUG_ENTER;
35 }
36
StartConnect()37 int32_t StreamClient::StartConnect()
38 {
39 CALL_DEBUG_ENTER;
40 if (Socket() < 0) {
41 FI_HILOGE("Socket failed");
42 return RET_ERR;
43 }
44 OnConnected();
45 return RET_OK;
46 }
47
SendMsg(const char * buf,size_t size) const48 bool StreamClient::SendMsg(const char *buf, size_t size) const
49 {
50 CHKPF(buf);
51 if ((size == 0) || (size > MAX_PACKET_BUF_SIZE)) {
52 FI_HILOGE("Stream buffer size out of range");
53 return false;
54 }
55 if (fd_ < 0) {
56 FI_HILOGE("The fd_ is less than 0");
57 return false;
58 }
59
60 int32_t retryCount = 0;
61 int32_t idx = 0;
62 const int32_t bufSize = static_cast<int32_t>(size);
63 int32_t remSize = bufSize;
64 while (remSize > 0 && retryCount < SEND_RETRY_LIMIT) {
65 retryCount += 1;
66 ssize_t number = send(fd_, &buf[idx], remSize, MSG_DONTWAIT | MSG_NOSIGNAL);
67 if (number < 0) {
68 if (errno == EAGAIN || errno == EINTR || errno == EWOULDBLOCK) {
69 FI_HILOGW("Continue for errno EAGAIN|EINTR|EWOULDBLOCK, errno:%{public}d", errno);
70 continue;
71 }
72 FI_HILOGE("Send return failed, error:%{public}d, fd:%{public}d", errno, fd_);
73 return false;
74 }
75 idx += number;
76 remSize -= number;
77 if (remSize > 0) {
78 usleep(SEND_RETRY_SLEEP_TIME);
79 }
80 }
81 if (retryCount >= SEND_RETRY_LIMIT || remSize != 0) {
82 FI_HILOGE("Too many times to send :%{public}d/%{public}d, size:%{public}d/%{public}d, fd:%{public}d",
83 retryCount, SEND_RETRY_LIMIT, idx, bufSize, fd_);
84 return false;
85 }
86 return true;
87 }
88
SendMsg(const NetPacket & pkt) const89 bool StreamClient::SendMsg(const NetPacket &pkt) const
90 {
91 if (pkt.ChkRWError()) {
92 FI_HILOGE("Read and write status is error");
93 return false;
94 }
95 StreamBuffer buf;
96 if (!pkt.MakeData(buf)) {
97 FI_HILOGE("Failed to buffer packet");
98 return false;
99 }
100 return SendMsg(buf.Data(), buf.Size());
101 }
102
StartClient(MsgClientFunCallback fun)103 bool StreamClient::StartClient(MsgClientFunCallback fun)
104 {
105 CALL_DEBUG_ENTER;
106 if (isRunning_ || hasConnected_) {
107 FI_HILOGE("Client is connected or started");
108 return false;
109 }
110 hasClient_ = true;
111 recvFun_ = fun;
112 if (StartConnect() < 0) {
113 FI_HILOGW("Client connection failed, Try again later");
114 }
115 return true;
116 }
117
Stop()118 void StreamClient::Stop()
119 {
120 CALL_DEBUG_ENTER;
121 hasClient_ = false;
122 Close();
123 }
124 } // namespace DeviceStatus
125 } // namespace Msdp
126 } // namespace OHOS