Last modified by Xiaoling on 2023/04/20 18:14
<
From version < 19.2 >
edited by Xiaoling
on 2022/09/17 16:42
To version < 3.1 >
edited by Xiaoling
on 2022/05/27 16:11
>
Change comment: Uploaded new attachment "image-20220527161149-2.png", version {1}

Summary

Details

Page properties
Content
... ... @@ -1,19 +1,15 @@
1 -**Table of Contents:**
1 + **Contents:**
2 2  
3 3  {{toc/}}
4 4  
5 5  
6 -
7 7  = 1. Introduction =
8 8  
9 -
10 10  The Dragino LoRaWAN gateway can commuicate with LoRaWAN ABP End Node without the need of LoRaWAN server. It can be used in some cases such as:
11 11  
12 12  * No internet connection.
13 -* User wants to get data forward in gateway and forward to their server base on MQTT/HTTP, etc. (Combine ABP communication method and [[MQTT forward together>>MQTT Forward Instruction]]).
11 +* User wants to get data forward in gateway and forward to their server base on MQTT/HTTP, etc. (Combine ABP communication method and [[MQTT forward together>>url:https://wiki.dragino.com/index.php/MQTT_Forward_Instruction]]).
14 14  
15 -
16 -
17 17  (((
18 18  The basic of this feature is the decoding of (% style="color:red" %)**LoRaWAN ABP End Node**(%%). Requirements:
19 19  )))
... ... @@ -22,9 +22,6 @@
22 22  1. LoRaWAN Gateway model: [[LPS8>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/148-lps8.html]], [[LG308>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/140-lg308.html]], [[DLOS8>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/160-dlos8.html]] ,[[LIG16>>url:http://www.dragino.com/products/lora-lorawan-gateway/item/171-lig16.html]]
23 23  1. Firmware version for below instruction:**[[(% style="color:purple" %)Since LG02_LG08~~-~~-build-v5.4.1593400722-20200629-1120>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/Release/]](%%)**
24 24  
25 -
26 -
27 -
28 28  = 2. How it works =
29 29  
30 30  
... ... @@ -35,65 +35,53 @@
35 35  
36 36  (% class="box infomessage" %)
37 37  (((
38 -**AT+NWKSKEY=72 32 63 95 dd 8f e2 b2 13 66 e4 35 93 8f 55 df
31 +AT+NWKSKEY=72 32 63 95 dd 8f e2 b2 13 66 e4 35 93 8f 55 df
39 39  AT+APPSKEY=b3 17 f8 14 7a 43 27 8a 6a 31 c4 47 3d 55 5d 33
40 -AT+DADDR=2602111D**
33 +AT+DADDR=2602111D
41 41  )))
42 42  
43 43  (((
44 44  and we have the LG308 works and US915 band and support ABP decryption. User can input these keys in LG308 so the LG308 can communicate with LGT92.
45 -
46 -
47 47  )))
48 48  
49 49  We need to input above keys in LG308 and enable ABP decryption.
50 50  
42 +[[image:https://wiki.dragino.com/images/thumb/5/55/LG308_MQTT_1.png/600px-LG308_MQTT_1.png||height="329" width="600"]]
51 51  
52 -[[image:image-20220527161119-1.png]]
53 -
54 -
55 55  Input the ABP keys in LG308
56 56  
57 57  
58 -
59 59  == 2.1 Upstream ==
60 60  
61 -
62 62  Now when this End Node (Dev Addr=2602111D) send a uplink packet. When this packet arrive LG308, LG308 will decode it and put the decode data on the file /var/iot/channels/2602111D . So we have this data for further process with other applications in LG308.
63 63  
64 64  (((
65 -We can see the log of LG308 to know this packet arrive.
66 -
67 -
52 +We can see the log of LG308 to know this packet arrive
68 68  )))
69 69  
70 -[[image:image-20220527161149-2.png]]
55 +[[image:https://wiki.dragino.com/images/thumb/1/16/ABP_DECODE_2.png/600px-ABP_DECODE_2.png||height="205" width="600"]]
71 71  
57 +LG308 log by "logread -f" command
72 72  
73 -LG308 log by "(% style="color:red" %)**logread -f**" (%%)command
74 74  
75 -
76 -
77 77  The data of End Node is stored in the file /var/iot/channels/2602111D. We can use hexdump command to check it.
78 78  
79 79  (% class="box" %)
80 80  (((
81 81  root@dragino-1d25dc:~~# hexdump /var/iot/channels/2602111D
82 -0000000 (% style="color:#037691" %)**4646 4646 4646 3946 3030 3030 3030 3546**(%%)      ~-~-> Got RSSI and SNR    
83 -0000010 (% style="color:#037691" %)**cc0c 0b63 0266 017f ff7f ff00 **(%%) ~-~-> Payload
65 +0000000 (% class="mark" %)**4646 4646 4646 3946 3030 3030 3030 3546**(%%)      ~-~-> Got RSSI and SNR    
66 +0000010 (% class="mark" %)**cc0c 0b63 0266 017f ff7f ff00 **(%%) ~-~-> Payload
84 84  000001c
85 85  )))
86 86  
87 -* **RSSI**: 4646 4646 4646 3946 = 0xFFFF FF9F : So RSSI = (0xFFFF FF9F - 0x100000000) = -97
88 -* **SNR**: 3030 3030 3030 3546 = 0x0000 005F = 95, need to divide 10 so SNR is 9.5
89 -* **Payload**: 0xcc0c 0b63 0266 017f ff7f ff00
70 +* RSSI: 4646 4646 4646 3946 = 0xFFFF FF9F : So RSSI = (0xFFFF FF9F - 0x100000000) = -97
71 +* SNR: 3030 3030 3030 3546 = 0x0000 005F = 95, need to divide 10 so SNR is 9.5
72 +* Payload: 0xcc0c 0b63 0266 017f ff7f ff00
90 90  
91 -
92 -
93 93  (% class="box" %)
94 94  (((
95 -(% style="color:red" %)**Notice 1**(%%): The data file stored in LG308 for the end node is bin file. If the end node sends ASCII string to gateway, the output will as below:
96 -in LGT92, use (% style="color:#037691" %)**AT+SEND=12:hello world** (%%)to send ASCII string
76 +(% class="mark" %)**Notice 1**(%%): The data file stored in LG308 for the end node is bin file. If the end node sends ASCII string to gateway, the output will as below:
77 +in LGT92, use **AT+SEND=12**:hello world to send ASCII string
97 97  root@dragino-1d25dc:~~# hexdump /var/iot/channels/2602111D
98 98  0000000 4646 4646 4646 3946 3030 3030 3030 3546
99 99  0000010 6865 6c6c 6f20 776f 726c 6400      ~-~-> Got ASCII code "hello world"    
... ... @@ -100,19 +100,15 @@
100 100  000001c
101 101  )))
102 102  
103 -
104 104  (% class="box" %)
105 105  (((
106 -(% style="color:red" %)**Notice 2**(%%): The upstream payload length should match the LoRaWAN length requirement (max length depends on Frequency and DR), otherwise the gateway can't decode the payload.
86 +(% class="mark" %)**Notice 2**(%%): The upstream payload length should match the LoRaWAN length requirement (max length depends on Frequency and DR), otherwise the gateway can't decode the payload.
107 107  )))
108 108  
109 -
110 -
111 111  === 2.2.1 Decode Method ===
112 112  
91 +The decode methods: **ASCII String, Decode_LHT65** doesn't affect how the sensor data is stored, they are to define how should the sensor data to be sent.
113 113  
114 -The decode methods: (% style="color:#037691" %)**ASCII String, Decode_LHT65**(%%) doesn't affect how the sensor data is stored, they are to define how should the sensor data to be sent.
115 -
116 116  For example we have a LHT65 , works in ABP mode and gateway successful get the data, which are:
117 117  
118 118  (% class="box" %)
... ... @@ -123,7 +123,6 @@
123 123  000001c
124 124  )))
125 125  
126 -
127 127  If we choose ASCII decoder, the MQTT process will send out with mqtt-data:
128 128  
129 129  (% class="box" %)
... ... @@ -130,10 +130,9 @@
130 130  (((
131 131  Sun Sep 27 04:33:16 2020 user.notice root: [IoT.MQTT]:pub_topic[-t]: dragino-1baf44/01826108/data
132 132  Sun Sep 27 04:33:16 2020 user.notice root: [IoT.MQTT]:decoder: ASCII
133 -Sun Sep 27 04:33:16 2020 user.notice root: [IoT.MQTT]:mqtt_data[-m]: (% style="color:#037691" %)**ffffffe700000048ccd17fff7fff017fff7fff00**
109 +Sun Sep 27 04:33:16 2020 user.notice root: [IoT.MQTT]:mqtt_data[-m]: ffffffe700000048ccd17fff7fff017fff7fff00
134 134  )))
135 135  
136 -
137 137  If we choose Decode_LHT65, the MQTT process will send out with mqtt-data
138 138  
139 139  (% class="box" %)
... ... @@ -140,34 +140,28 @@
140 140  (((
141 141  Sun Sep 27 04:36:45 2020 user.notice root: [IoT.MQTT]:pub_topic[-t]: dragino-1baf44/01826108/data
142 142  Sun Sep 27 04:36:45 2020 user.notice root: [IoT.MQTT]:decoder: Dragino_LHT65
143 -Sun Sep 27 04:36:45 2020 user.notice root: [IoT.MQTT]:mqtt_data[-m]:** (% style="color:#037691" %){"Hum_SHT":32.7,"BatV":3.281,"TempC_DS":32.9,
144 -"EXT":"Temperature Sensor","RSSI":-24,"TempC_SHT":85.0,"SNR":8.2,"ext_sensor":0}(%%)**
118 +Sun Sep 27 04:36:45 2020 user.notice root: [IoT.MQTT]:mqtt_data[-m]: {"Hum_SHT":32.7,"BatV":3.281,"TempC_DS":32.9,
119 +"EXT":"Temperature Sensor","RSSI":-24,"TempC_SHT":85.0,"SNR":8.2,"ext_sensor":0}
145 145  )))
146 146  
147 147  Above scripts are store in /etc/lora/decoder/. User can put their scripts here and select it in the UI.
148 148  
149 149  
150 -
151 151  === 2.2.2 How to Decode My End Node ===
152 152  
127 +1/ Configure the ABP keys for your end node in the gateway. enable ABP decode in Web UI
153 153  
154 -**1.** Configure the ABP keys for your end node in the gateway. enable ABP decode in Web UI
129 +2/ Don't choose MQTT service, use LoRaWAN.
155 155  
156 -**2. **Don't choose MQTT service, use LoRaWAN.
131 +3/ When your end node send a message to the gateway, there will be a file store in /var/iot/channels. full path should be /var/iot/channels/END_NODE_DEV_ADDR
157 157  
158 -**3.** When your end node send a message to the gateway, there will be a file store in /var/iot/channels. full path should be /var/iot/channels/END_NODE_DEV_ADDR
133 +4/ Use the /etc/lora/decoder/Dragino_LHT65 as template to decode your payload. This script is written in Lua language. User can manually call this script when you see the data file in /var/iot/channels by running:
159 159  
160 -**4.** Use the /etc/lora/decoder/Dragino_LHT65 as template to decode your payload. This script is written in Lua language. User can manually call this script when you see the data file in /var/iot/channels by running:
161 -
162 162  {{{/etc/lora/decoder/Dragino_LHT65 END_NODE_DEV_ADDR
163 163  }}}
164 164  
165 -**5.** What you see as output is the MQTT data device will upload, user's end node has different payload compare with LHT65, most properly this file will report with error. User need to modify to match the actual payload.
138 +5/ What you see as output is the MQTT data device will upload, user's end node has different payload compare with LHT65, most properly this file will report with error. User need to modify to match the actual payload. Some notice:
166 166  
167 -
168 -(% style="color:red" %)
169 -**Some notice:**
170 -
171 171  * RSSI and SNR are added when gateway receive the packet, so there is always this field.
172 172  * If you rename the file, please make it executable.
173 173  * See this link for lua.bit module: [[http:~~/~~/luaforge.net/projects/bit/>>url:http://luaforge.net/projects/bit/]]
... ... @@ -175,52 +175,43 @@
175 175  * the last line return is what will be used for MQTT
176 176  * User can use other language ,not limited to Lua, just make sure the return is what you want to send.
177 177  
178 -
179 -
180 -
181 181  == 2.2 Downstream ==
182 182  
183 -
184 184  In LG308, we can create a file in the directory /var/iot/push for downstream purpose. We recommend using each command to generate this file. This file will be used for transmission and auto-deleted after used
185 185  
186 186  The file should use below format:
187 187  
188 -(% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload**
153 +(% class="mark" %)**dev_addr,imme/time,txt/hex,payload**
189 189  
190 -
191 191  Since fimware > Dragino-v2 lgw-5.4.1608518541 . Support more option
192 192  
193 -(% style="color:#037691" %)**dev_addr,imme/time,txt/hex,payload,txpw,txbw,SF,frequency,rxwindow**
157 +(% class="mark" %)**dev_addr,imme/time,txt/hex,payload,txpw,txbw,SF,frequency,rxwindow**
194 194  
195 -* **dev_addr:** Inptu the device address
196 -* **imme/time:**
159 +* dev_addr: Inptu the device address
160 +* imme/time:
197 197  ** imme: send downstream immediately,For Class C end node.
198 198  ** time: send downstream after receive device's uplink. For Class A end node
199 -* **txt/hex:**
163 +* txt/hex:
200 200  ** txt: send payload in ASCII
201 201  ** hex: send payload in HEX
202 -* **payload: **payload to be sent, payload lenght should match the LoRaWAN protocol requirement.
203 -* **txpw:** Transmit Power. example: 20
204 -* **txbw:** bandwidth:
166 +* payload: payload to be sent, payload lenght should match the LoRaWAN protocol requirement.
167 +* txpw: Transmit Power. example: 20
168 +* txbw: bandwidth:
205 205  ** 1: 500 kHz
206 206  ** 2: 250 kHz
207 207  ** 3: 125 kHz
208 208  ** 4: 62.5 kHz
209 -* **SF:** Spreading Factor : SF7/SF8/SF9/SF10/SF11/SF12
210 -* **Frequency:** Transmit Frequency: example: 923300000
211 -* **rxwindow:** transmit on Rx1Window or Rx2Window.
173 +* SF: Spreading Factor : SF7/SF8/SF9/SF10/SF11/SF12
174 +* Frequency: Transmit Frequency: example: 923300000
175 +* rxwindow: transmit on Rx1Window or Rx2Window.
212 212  
177 +Completely exmaple:
213 213  
179 +* Old version: echo 018193F4,imme,hex,0101 > /var/iot/push/test
180 +* New version: echo 018193F4,imme,hex,0101,20,1,SF12,923300000,2 > /var/iot/push/test
214 214  
215 -(% style="color:blue" %)**Completely exmaple:**
182 +(% class="mark" %)**Downstream Frequency**
216 216  
217 -* **Old version:** echo 018193F4,imme,hex,0101 > /var/iot/push/test
218 -* **New version:** echo 018193F4,imme,hex,0101,20,1,SF12,923300000,2 > /var/iot/push/test
219 -
220 -
221 -
222 -(% style="color:#037691" %)**Downstream Frequency:**
223 -
224 224  The LG308 will use the RX2 window info to send the downstream payload, use the default LoRaWAN settings, as below:
225 225  
226 226  * EU868: 869.525Mhz, DR0(SF12BW125)
... ... @@ -232,28 +232,32 @@
232 232  * IN865: 866.55Mhz, SF10 BW125
233 233  * RU864: 869.1Mhz, SF12 BW125
234 234  
195 +(% class="mark" %)**Examples:**
235 235  
236 -
237 -(% style="color:#037691" %)**Examples:**
238 -
239 239  (% class="box" %)
240 240  (((
241 241  we can use echo command to create files in LG308 for downstream.
242 242  root@dragino-1d25dc:~~# echo 2602111D,time,hex,12345678 > /var/iot/push/test
201 +)))
243 243  
244 -
245 -**1)** From logread -f of gateway, we can see it has been added as pedning.
203 +(% class="box" %)
204 +(((
205 +1) From logread -f of gateway, we can see it has been added as pedning.
246 246  lora_pkt_fwd[4286]: INFO~~ [DNLK]Looking file : test
247 247  lora_pkt_fwd[4286]: INFO~~ [DNLK]devaddr:2602111D, txmode:time, pdfm:hex, size:4, payload1:4Vx,payload_hex:77C1BB90
248 248  lora_pkt_fwd[4286]: INFO~~ [DNLK] DNLINK PENDING!(1 elems).
209 +)))
249 249  
250 -
251 -**2)** When there is an upstrea from end node, this downstream will be sent and shows:
211 +(% class="box" %)
212 +(((
213 +2) When there is an upstrea from end node, this downstream will be sent and shows:
252 252  lora_pkt_fwd[4286]: INFO: tx_start_delay=1497 (1497.000000) - (1497, bw_delay=0.000000, notch_delay=0.000000)
253 253  lora_pkt_fwd[4286]: [LGWSEND]lgw_send done: count_us=3537314420, freq=923300000, size=17
216 +)))
254 254  
255 -
256 -**3)** and the end node will got:
218 +(% class="box" %)
219 +(((
220 +3) and the end node will got:
257 257  [5764825]~*~*~*~** UpLinkCounter= 98 ~*~*~*~**
258 258  [5764827]TX on freq 905300000 Hz at DR 0
259 259  Update Interval: 60000 ms
... ... @@ -264,10 +264,12 @@
264 264  [5767501]rxDone
265 265  Rssi= -41
266 266  Receive data
267 -(% style="color:#037691" %)**2:12345678**  (%%) ~-~-> Hex
231 +2:12345678    ~-~-> Hex
232 +)))
268 268  
269 -
270 -**4) **If we use the command "echo 2602111D,time,txt,12345678 > /var/iot/push/test" for downstream, the end node will got:
234 +(% class="box" %)
235 +(((
236 +4) If we use the command "echo 2602111D,time,txt,12345678 > /var/iot/push/test" for downstream, the end node will got:
271 271  [5955877]~*~*~*~** UpLinkCounter= 102 ~*~*~*~**
272 272  [5955879]TX on freq 904100000 Hz at DR 0
273 273  Update Interval: 60000 ms
... ... @@ -278,19 +278,16 @@
278 278  [5958595]rxDone
279 279  Rssi= -37
280 280  Receive data
281 -(% style="color:#037691" %)**2:3132333435363738**(%%) ~-~-> ASCII string "12345678"
247 +2:3132333435363738 ~-~-> ASCII string "12345678"
282 282  )))
283 283  
284 -
285 -
286 286  = 3. Example 1: Communicate with LT-22222-L =
287 287  
288 -
289 289  Script can be download from: [[Example Script 1>>url:http://www.dragino.com/downloads/index.php?dir=LoRa_Gateway/LPS8/Firmware/customized_script/&file=talk_to_lt-22222-l_v0.1.sh]]
290 290  
291 291  (% class="box" %)
292 292  (((
293 -//#!/bin/sh
256 +#!/bin/sh
294 294  # This scripts shows how to use LPS8/LG308/DLOS8 to communicate with two LoRaWAN End Nodes, without the use of internet or LoRaWAN server
295 295  #
296 296  # Hardware Prepare:
... ... @@ -323,54 +323,40 @@
323 323  #  Device1: DI1: ON, DI2: ON , DO1: ON,  DO2: ON
324 324  #  Device2: DI1: OFF, DI2: OFF , DO1: ON,  DO2: ON
325 325  #  So if a person is in the Device 1 location, he can check if the DO LED match DI LEDs on Device 1 to confirm
326 -#  whether the Device 2 has been changed.//
289 +#  whether the Device 2 has been changed.
327 327  )))
328 328  
292 +~1. Input keys
329 329  
330 -(% style="color:blue" %)**1. Input keys**
294 +[[image:https://wiki.dragino.com/images/thumb/b/bf/LPS8_LT-22222_1.png/600px-LPS8_LT-22222_1.png||height="335" width="600"]]
331 331  
332 -
333 -[[image:image-20220527162450-3.png]]
334 -
335 335  Input Keys in LPS8
336 336  
298 +2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.
337 337  
300 +3. Choose Built-in server
338 338  
339 -(% style="color:blue" %)**2. Make sure the LPS8 and LT use the same frequency bands, choose EU868 in this test.**
302 +[[image:https://wiki.dragino.com/images/thumb/d/d7/LPS8_LT-22222_2.png/600px-LPS8_LT-22222_2.png||height="264" width="600"]]
340 340  
341 -
342 -(% style="color:blue" %)**3. Choose Built-in server**
343 -
344 -
345 -[[image:image-20220527162518-4.png]]
346 -
347 347  Choose Built-in server
348 348  
306 +4. Run the script.
349 349  
308 +[[image:https://wiki.dragino.com/images/thumb/3/39/LPS8_LT-22222_3.png/600px-LPS8_LT-22222_3.png||height="389" width="600"]]
350 350  
351 -(% style="color:blue" %)**4. Run the script.**
352 -
353 -
354 -[[image:image-20220722115213-2.png]]
355 -
356 356  Run the script
357 357  
312 +5. Output:
358 358  
314 +[[image:https://wiki.dragino.com/images/thumb/f/fe/LPS8_LT-22222_4.png/600px-LPS8_LT-22222_4.png||height="433" width="600"]]
359 359  
360 -(% style="color:blue" %)**5. Output:**
361 -
362 -
363 -[[image:image-20220722115133-1.png]]
364 -
365 365  Output from LPS8
366 366  
367 367  
368 -
369 369  = 4. Example 2: Communicate to TCP Server =
370 370  
321 +[[image:https://wiki.dragino.com/images/thumb/7/75/LPS8_TCP_0.png/600px-LPS8_TCP_0.png||height="370" width="600"]]
371 371  
372 -[[image:image-20220527162648-7.png]]
373 -
374 374  Network Structure
375 375  
376 376  
... ... @@ -377,45 +377,34 @@
377 377  Full instruction video inlcude how to write scripts to fit server needed is here:
378 378  
379 379  
380 -(% style="color:#037691" %)**Video Instruction**(%%): **[[https:~~/~~/youtu.be/-nevW6U2TsE>>url:https://youtu.be/-nevW6U2TsE]]**
329 +(% class="mark" %)**Video Instruction**: [[https:~~/~~/youtu.be/-nevW6U2TsE>>url:https://youtu.be/-nevW6U2TsE]]
381 381  
331 +(% class="mark" %)**Note: Firmware version must be higher than lgw-5.4.1607519907**
382 382  
383 -(% style="color:red" %)**Note: Firmware version must be higher than lgw-5.4.1607519907**
384 -
385 -
386 386  Assume we already set up ABP keys in the gateway:
387 387  
388 -[[image:image-20220527162852-8.png]]
335 +[[image:https://wiki.dragino.com/images/thumb/b/bf/LPS8_LT-22222_1.png/600px-LPS8_LT-22222_1.png||height="335" width="600"]]
389 389  
390 390  Input Keys in LPS8
391 391  
339 +run socket tool in PC
392 392  
341 +[[image:https://wiki.dragino.com/images/thumb/4/4b/LPS8_TCP_2.png/600px-LPS8_TCP_2.png||height="212" width="600"]]
393 393  
394 -(% style="color:blue" %)**run socket tool in PC**
395 -
396 -
397 -[[image:image-20220527163028-9.png]]
398 -
399 -
400 400  Socket tool
401 401  
402 402  
346 +Input Server address and port
403 403  
404 -(% style="color:blue" %)**Input Server address and port**
348 +[[image:https://wiki.dragino.com/images/thumb/c/c6/LPS8_TCP_3.png/600px-LPS8_TCP_3.png||height="306" width="600"]]
405 405  
406 -
407 -[[image:image-20220527163106-10.png]]
408 -
409 409  Input Server address and port
410 410  
411 411  
353 +See value receive in socket tool. :
412 412  
413 -(% style="color:blue" %)**See value receive in socket tool:**
355 +[[image:https://wiki.dragino.com/images/thumb/2/20/LPS8_TCP_4.png/600px-LPS8_TCP_4.png||height="219" width="600"]]
414 414  
415 -
416 -[[image:image-20220527163144-11.png]]
417 -
418 418  value receive in socket tool
419 419  
420 -
421 421  If user want to modify the TCP connection method. He can refer: [[https:~~/~~/github.com/dragino/dragino-packages/blob/lg02/haserl-ui/root/usr/bin/tcp_process.sh>>url:https://github.com/dragino/dragino-packages/blob/lg02/haserl-ui/root/usr/bin/tcp_process.sh]]. Same script is on /usr/bin of gateway.
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