Realm listener with node - node.js

since the dotnet version of Realm.Server has a problem with certificates (see https://forums.realm.io/t/net-realm-server-notifier-startasync-never-connects-to-realm-cloud-instance-because-of-ssl-exception/1625), it was suggested by realm to use the nodejs package.
I am quite new to nodejs and so I tried to implement a change event listener using node. All that based on https://docs.realm.io/platform/using-synced-realms/server-side-usage/data-change-events#creating-event-handlers-in-node-js.
Unfortunatly I am not able to get it working.
The node process stops running when realm is trying to connect (or at least is doing something in background). Anyhow the addListener method makes it stop.
I am sorry but there is not much I could provide. I've attached my sample code and the console output of the node process.
Does anyone has any experience with it? Or any tips where I could look up for some detailed logs, etc.?
Thanks in advance!!
'use strict';
const realm = require('realm');
const http = require('http');
const name = 'node-hello-world';
const port = '8888';
const app = new http.Server();
// the URL to the Realm Object Server
const realmUrl = '//myinstance.de1a.cloud.realm.io';
const userName = 'admin';
const userPassword = 'AnyPassword';
// The regular expression you provide restricts the observed Realm files to only the subset you
// are actually interested in. This is done in a separate step to avoid the cost
// of computing the fine-grained change set if it's not necessary.
const notifierPath = '^/([^/]+)/user-data';
//declare admin user
let adminUser = undefined;
// The handleChange callback is called for every observed Realm file whenever it
// has changes. It is called with a change event which contains the path, the Realm,
// a version of the Realm from before the change, and indexes indication all objects
// which were added, deleted, or modified in this change
var handleChange = async function(changeEvent) {
// Extract the user ID from the virtual path, assuming that we're using
// a filter which only subscribes us to updates of user-scoped Realms.
var matches = changeEvent.path.match("^/([^/]+)/([^/]+)$");
var userId = matches[1];
var r = changeEvent.realm;
console.log(`Change event for ${userId}`);
};
// register the event handler callback
async function main() {
try {
realm.Sync.setLogLevel('all');
console.log("Creating instance of credentials");
var credentials = realm.Sync.Credentials.usernamePassword(userName, userPassword);
console.log("Logging in user.");
adminUser = await realm.Sync.User.login(`https:${realmUrl}`, credentials);
console.log(`Adding realm listener for path ${notifierPath}`);
//if this line was called, the console will exit in a few seconds; if not the node process will continue running
realm.Sync.addListener(`realms:${realmUrl}`, adminUser, notifierPath, 'change', handleChange);
console.log("Added listener");
} catch (exception) {
console.log("An error has occured.");
console.log(exception);
}
}
main();
app.on('request', (req, res) => {
res.writeHead(200, { 'Content-Type': 'text/plain' });
res.write('Hello World');
res.end('\n');
});
app.listen(port, () => {
console.log(`${name} is listening on port ${port}`);
});
------------------------------
Path>node app.js
Creating instance of credentials
Logging in user.
node-hello-world is listening on port 8888
Adding realm listener for path ^/([^/]+)/user-data
Global notifier: start()
Realm sync client ([realm-core-5.10.1], [realm-sync-3.10.0], protocol version 25)
Config param: max_open_files = 256
Config param: one_connection_per_session = 1
Config param: connect_timeout = 600000 ms
Config param: connection_linger_time = 30000 ms
Config param: ping_keepalive_period = 600000 ms
Config param: pong_keepalive_timeout = 600000 ms
Config param: fast_reconnect_limit = 60000 ms
Config param: enable_upload_log_compaction = 1
Config param: tcp_no_delay = 0
Added listener
Connection[1]: WebSocket::Websocket()
Connection[1]: Session[1]: Binding 'Path\realm-object-server\listener\realms.realm' to '/__admin'
Connection[1]: Session[1]: Activating
Opening Realm file: Path\realm-object-server\listener\realms.realm
Connection[1]: Session[1]: last_version_available = 0
Connection[1]: Session[1]: progress_server_version = 0
Connection[1]: Session[1]: progress_client_version = 0
Using already open Realm file: Path\realm-object-server\listener\realms.realm
Connection[1]: Session[1]: Progress handler called, downloaded = 0, downloadable = 0, uploaded = 0, uploadable = 0, progress version = 0, snapshot version = 1
Connection[1]: Resolving 'myinstance.de1a.cloud.realm.io:443'
Connection[1]: Connecting to endpoint '18.185.186.xx:443' (1/3)
Connection[1]: Connected to endpoint '18.185.186.xx:443' (from '127.0.0.1:53094')
Connection[1]: Verifying server SSL certificate using root certificates, host name = myinstance.de1a.cloud.realm.io, server port = 443, certificate =
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
Connection[1]: Verifying server SSL certificate using 155 root certificates
Connection[1]: Server SSL certificate verified using root certificate(29):
-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
Connection[1]: WebSocket::initiate_client_handshake()
Connection[1]: HTTP request =
GET /realm-sync/%2F__admin HTTP/1.1
Authorization: Realm-Access-Token version=1 token="xxx"
Connection: Upgrade
Host: myinstance.de1a.cloud.realm.io
Sec-WebSocket-Key: 0TpYePZIZMhOid08TiAQzw==
Sec-WebSocket-Protocol: io.realm.sync.25
Sec-WebSocket-Version: 13
Upgrade: websocket
Connection[1]: WebSocket::handle_http_response_received()
Connection[1]: HTTP response = HTTP/1.1 101 Switching Protocols
Connection: upgrade
Date: Sun, 14 Oct 2018 11:22:13 GMT
sec-websocket-accept: A/hVVKTFOsJneK3U/SBQMisIyIg=
sec-websocket-protocol: io.realm.sync.25
Server: nginx/1.13.5
upgrade: websocket
Connection[1]: Will emit a ping in 467729 milliseconds
Connection[1]: Session[1]: Sending: BIND(path='/__admin', signed_user_token_size=601, need_client_file_ident=1)
Connection[1]: Session[1]: Received: IDENT(client_file_ident=13, client_file_ident_salt=7274062357029523918)
Using already open Realm file: Path\realm-object-server\listener\realms.realm
Connection[1]: Session[1]: Sending: IDENT(client_file_ident=13, client_file_ident_salt=7274062357029523918, scan_server_version=0, scan_client_version=0, latest_server_version=0, latest_server_version_salt=0)
Connection[1]: Session[1]: Sending: MARK(request_ident=2)
Download message compression: is_body_compressed = 1, compressed_body_size=2054, uncompressed_body_size=5474
Received: DOWNLOAD CHANGESET(server_version=1, client_version=0, origin_timestamp=119025057956, origin_file_ident=2, original_changeset_size=370, changeset_size=370)
Changeset: 3F 00 07 41 63 63 6F 75 6E 74 3F 01 0A 50 65 72 6D 69 73 73 69 6F 6E 3F 02 09 52 65 61 6C 6D 46 69 6C 65 3F 03 04 70 61 74 68 3F 04 04 55 73 65 72 3F 05 06 75 73 65 72 49 64 3F 06 0F 55 73 65 72 4D 65 74 61 64 61 74 61 52 6F 77 3F 07 08 70 72 6F 76 69 64 65 72 3F 08 0A 70 72 6F 76 69 64 65 72 49 64 3F 09 04 75 73 65 72 3F 0A 09 72 65 61 6C 6D 46 69 6C 65 3F 0B 07 6D 61 79 52 65 61 64 3F 0C 08 6D 61 79 57 72 69 74 65 3F 0D 09 6D 61 79 4D 61 6E 61 67 65 3F 0E 09 75 70 64 61 74 65 64 41 74 3F 0F 09 72 65 61 6C 6D 54 79 70 65 3F 10 09 73 79 6E 63 4C 61 62 65 6C 3F 11 05 6F 77 6E 65 72 3F 12 09 63 72 65 61 74 65 64 41 74 3F 13 07 69 73 41 64 6D 69 6E 3F 14 08 61 63 63 6F 75 6E 74 73 3F 15 08 6D 65 74 61 64 61 74 61 3F 16 03 6B 65 79 3F 17 05 76 61 6C 75 65 02 00 00 02 01 00 02 02 01 03 02 00 02 04 01 05 02 00 02 06 00 00 00 0B 07 02 00 00 0B 08 02 00 00 00 01 0B 09 0C 00 04 0B 0A 0C 00 02 0B 0B 01 00 00 0B 0C 01 00 00 0B 0D 01 00 00 0B 0E 08 00 00 00 02 0B 0F 02 00 00 0B 10 02 00 00 0B 11 0C 00 04 0B 12 08 00 00 00 04 0B 13 01 00 00 0B 14 0D 00 00 0B 15 0D 00 06 00 06 0B 16 02 00 00 0B 17 02 00 00
Received: DOWNLOAD CHANGESET(server_version=2, client_version=0, origin_timestamp=119025057963, origin_file_ident=2, original_changeset_size=208, changeset_size=208)
Changeset: 3F 00 09 52 65 61 6C 6D 46 69 6C 65 3F 01 09 72 65 61 6C 6D 54 79 70 65 3F 02 09 73 79 6E 63 4C 61 62 65 6C 3F 03 05 6F 77 6E 65 72 3F 04 09 63 72 65 61 74 65 64 41 74 00 00 04 D5 88 82 E0 F4 F3 85 E4 E0 00 A4 E3 DF D7 AD A0 B3 BA 07 02 08 2F 64 65 66 61 75 6C 74 06 02 01 D5 88 82 E0 F4 F3 85 E4 E0 00 A4 E3 DF D7 AD A0 B3 BA 07 00 09 72 65 66 65 72 65 6E 63 65 06 02 02 D5 88 82 E0 F4 F3 85 E4 E0 00 A4 E3 DF D7 AD A0 B3 BA 07 00 07 64 65 66 61 75 6C 74 06 40 03 D5 88 82 E0 F4 F3 85 E4 E0 00 A4 E3 DF D7 AD A0 B3 BA 07 00 06 08 04 D5 88 82 E0 F4 F3 85 E4 E0 00 A4 E3 DF D7 AD A0 B3 BA 07 00 A1 F7 F2 DD 05 C0 ED 98 CB 03
Received: DOWNLOAD CHANGESET(server_version=3, client_version=0, origin_timestamp=119025058022, origin_file_ident=2, original_changeset_size=202, changeset_size=202)
Changeset: 3F 00 09 52 65 61 6C 6D 46 69 6C 65 3F 01 09 72 65 61 6C 6D 54 79 70 65 3F 02 09 73 79 6E 63 4C 61 62 65 6C 3F 03 05 6F 77 6E 65 72 3F 04 09 63 72 65 61 74 65 64 41 74 00 00 04 C1 CF E7 BE C5 FA 94 88 07 AD E1 ED 8E 8E 83 8F D2 D0 00 02 08 2F 5F 5F 61 64 6D 69 6E 06 02 01 C1 CF E7 BE C5 FA 94 88 07 AD E1 ED 8E 8E 83 8F D2 D0 00 00 04 66 75 6C 6C 06 02 02 C1 CF E7 BE C5 FA 94 88 07 AD E1 ED 8E 8E 83 8F D2 D0 00 00 07 64 65 66 61 75 6C 74 06 40 03 C1 CF E7 BE C5 FA 94 88 07 AD E1 ED 8E 8E 83 8F D2 D0 00 00 06 08 04 C1 CF E7 BE C5 FA 94 88 07 AD E1 ED 8E 8E 83 8F D2 D0 00 00 A2 F7 F2 DD 05 80 E3 BE 0A
Received: DOWNLOAD CHANGESET(server_version=4, client_version=0, origin_timestamp=119025058024, origin_file_ident=2, original_changeset_size=201, changeset_size=201)
Changeset: 3F 00 09 52 65 61 6C 6D 46 69 6C 65 3F 01 09 72 65 61 6C 6D 54 79 70 65 3F 02 09 73 79 6E 63 4C 61 62 65 6C 3F 03 05 6F 77 6E 65 72 3F 04 09 63 72 65 61 74 65 64 41 74 00 00 04 D5 C0 D0 E0 A8 C1 8C EB EE 01 9A F3 F6 F5 D9 BE D2 99 37 02 07 2F 5F 5F 70 65 72 6D 06 02 01 D5 C0 D0 E0 A8 C1 8C EB EE 01 9A F3 F6 F5 D9 BE D2 99 37 00 04 66 75 6C 6C 06 02 02 D5 C0 D0 E0 A8 C1 8C EB EE 01 9A F3 F6 F5 D9 BE D2 99 37 00 07 64 65 66 61 75 6C 74 06 40 03 D5 C0 D0 E0 A8 C1 8C EB EE 01 9A F3 F6 F5 D9 BE D2 99 37 00 06 08 04 D5 C0 D0 E0 A8 C1 8C EB EE 01 9A F3 F6 F5 D9 BE D2 99 37 00 A2 F7 F2 DD 05 80 EC B8 0B
Received: DOWNLOAD CHANGESET(server_version=5, client_version=0, origin_timestamp=119025058029, origin_file_ident=2, original_changeset_size=221, changeset_size=221)
Changeset: 3F 00 09 52 65 61 6C 6D 46 69 6C 65 3F 01 09 72 65 61 6C 6D 54 79 70 65 3F 02 09 73 79 6E 63 4C 61 62 65 6C 3F 03 05 6F 77 6E 65 72 3F 04 09 63 72 65 61 74 65 64 41 74 00 00 04 B2 F8 DA D1 D7 8D 8F FF C7 01 BD EE F4 A5 FA DB D4 C2 FC 01 02 16 2F 5F 5F 77 69 6C 64 63 61 72 64 70 65 72 6D 69 73 73 69 6F 6E 73 06 02 01 B2 F8 DA D1 D7 8D 8F FF C7 01 BD EE F4 A5 FA DB D4 C2 FC 01 00 04 66 75 6C 6C 06 02 02 B2 F8 DA D1 D7 8D 8F FF C7 01 BD EE F4 A5 FA DB D4 C2 FC 01 00 07 64 65 66 61 75 6C 74 06 40 03 B2 F8 DA D1 D7 8D 8F FF C7 01 BD EE F4 A5 FA DB D4 C2 FC 01 00 06 08 04 B2 F8 DA D1 D7 8D 8F FF C7 01 BD EE F4 A5 FA DB D4 C2 FC 01 00 A2 F7 F2 DD 05 C0 82 EA 0D
Received: DOWNLOAD CHANGESET(server_version=6, client_version=0, origin_timestamp=119025058030, origin_file_ident=2, original_changeset_size=215, changeset_size=215)
Changeset: 3F 00 09 52 65 61 6C 6D 46 69 6C 65 3F 01 09 72 65 61 6C 6D 54 79 70 65 3F 02 09 73 79 6E 63 4C 61 62 65 6C 3F 03 05 6F 77 6E 65 72 3F 04 09 63 72 65 61 74 65 64 41 74 00 00 04 BD F9 DE AC C3 D1 DF 9F D0 01 F7 EC A4 D8 9A 88 A5 A3 EB 01 02 10 2F 5F 5F 63 6F 6E 66 69 67 75 72 61 74 69 6F 6E 06 02 01 BD F9 DE AC C3 D1 DF 9F D0 01 F7 EC A4 D8 9A 88 A5 A3 EB 01 00 04 66 75 6C 6C 06 02 02 BD F9 DE AC C3 D1 DF 9F D0 01 F7 EC A4 D8 9A 88 A5 A3 EB 01 00 07 64 65 66 61 75 6C 74 06 40 03 BD F9 DE AC C3 D1 DF 9F D0 01 F7 EC A4 D8 9A 88 A5 A3 EB 01 00 06 08 04 BD F9 DE AC C3 D1 DF 9F D0 01 F7 EC A4 D8 9A 88 A5 A3 EB 01 00 A2 F7 F2 DD 05 80 87 A7 0E
Received: DOWNLOAD CHANGESET(server_version=7, client_version=0, origin_timestamp=119025058068, origin_file_ident=2, original_changeset_size=180, changeset_size=180)
Changeset: 3F 00 04 55 73 65 72 3F 01 07 69 73 41 64 6D 69 6E 3F 02 07 41 63 63 6F 75 6E 74 3F 03 08 70 72 6F 76 69 64 65 72 3F 04 0A 70 72 6F 76 69 64 65 72 49 64 3F 05 08 61 63 63 6F 75 6E 74 73 00 00 04 8E C8 AA AB FC ED C0 8E EB 01 C1 AC DB FD BE E9 C9 A9 0C 02 07 5F 5F 61 64 6D 69 6E 06 01 01 8E C8 AA AB FC ED C0 8E EB 01 C1 AC DB FD BE E9 C9 A9 0C 00 01 00 02 04 02 00 00 06 02 03 02 00 00 05 72 65 61 6C 6D 06 02 04 02 00 00 07 5F 5F 61 64 6D 69 6E 00 00 01 05 8E C8 AA AB FC ED C0 8E EB 01 C1 AC DB FD BE E9 C9 A9 0C 02 0E 0C 00 00 02 02 00
Received: DOWNLOAD CHANGESET(server_version=8, client_version=0, origin_timestamp=119025058091, origin_file_ident=2, original_changeset_size=164, changeset_size=164)
Changeset: 3F 00 0A 50 65 72 6D 69 73 73 69 6F 6E 3F 01 04 75 73 65 72 3F 02 09 52 65 61 6C 6D 46 69 6C 65 3F 03 09 72 65 61 6C 6D 46 69 6C 65 3F 04 07 6D 61 79 52 65 61 64 3F 05 08 6D 61 79 57 72 69 74 65 3F 06 09 6D 61 79 4D 61 6E 61 67 65 3F 07 09 75 70 64 61 74 65 64 41 74 00 00 04 02 00 00 06 40 01 02 00 00 06 0C 03 02 00 00 02 B2 F8 DA D1 D7 8D 8F FF C7 01 BD EE F4 A5 FA DB D4 C2 FC 01 06 01 04 02 00 00 01 06 01 05 02 00 00 00 06 01 06 02 00 00 00 06 08 07 02 00 00 A2 F7 F2 DD 05 C0 99 B2 2B
Received: DOWNLOAD CHANGESET(server_version=9, client_version=0, origin_timestamp=119025058092, origin_file_ident=2, original_changeset_size=163, changeset_size=163)
Changeset: 3F 00 0A 50 65 72 6D 69 73 73 69 6F 6E 3F 01 04 75 73 65 72 3F 02 09 52 65 61 6C 6D 46 69 6C 65 3F 03 09 72 65 61 6C 6D 46 69 6C 65 3F 04 07 6D 61 79 52 65 61 64 3F 05 08 6D 61 79 57 72 69 74 65 3F 06 09 6D 61 79 4D 61 6E 61 67 65 3F 07 09 75 70 64 61 74 65 64 41 74 00 00 04 02 01 00 06 40 01 02 01 00 06 0C 03 02 01 00 02 D5 C0 D0 E0 A8 C1 8C EB EE 01 9A F3 F6 F5 D9 BE D2 99 37 06 01 04 02 01 00 01 06 01 05 02 01 00 00 06 01 06 02 01 00 00 06 08 07 02 01 00 A2 F7 F2 DD 05 80 9E EF 2B
Received: DOWNLOAD CHANGESET(server_version=10, client_version=0, origin_timestamp=119025058119, origin_file_ident=2, original_changeset_size=237, changeset_size=237)
Changeset: 3F 00 09 52 65 61 6C 6D 46 69 6C 65 3F 01 09 72 65 61 6C 6D 54 79 70 65 3F 02 09 73 79 6E 63 4C 61 62 65 6C 3F 03 04 55 73 65 72 3F 04 05 6F 77 6E 65 72 3F 05 09 63 72 65 61 74 65 64 41 74 00 00 04 82 AD AB 8D A8 BD E3 D4 D9 01 FC DA CA A1 C6 CA F6 F0 EF 00 02 0B 2F 5F 5F 70 61 73 73 77 6F 72 64 06 02 01 82 AD AB 8D A8 BD E3 D4 D9 01 FC DA CA A1 C6 CA F6 F0 EF 00 00 04 66 75 6C 6C 06 02 02 82 AD AB 8D A8 BD E3 D4 D9 01 FC DA CA A1 C6 CA F6 F0 EF 00 00 07 64 65 66 61 75 6C 74 06 0C 04 82 AD AB 8D A8 BD E3 D4 D9 01 FC DA CA A1 C6 CA F6 F0 EF 00 00 03 8E C8 AA AB FC ED C0 8E EB 01 C1 AC DB FD BE E9 C9 A9 0C 06 08 05 82 AD AB 8D A8 BD E3 D4 D9 01 FC DA CA A1 C6 CA F6 F0 EF 00 00 A2 F7 F2 DD 05 C0 97 DF 38
Received: DOWNLOAD CHANGESET(server_version=11, client_version=0, origin_timestamp=119025058319, origin_file_ident=2, original_changeset_size=203, changeset_size=203)
Changeset: 3F 00 04 55 73 65 72 3F 01 07 69 73 41 64 6D 69 6E 3F 02 07 41 63 63 6F 75 6E 74 3F 03 08 70 72 6F 76 69 64 65 72 3F 04 0A 70 72 6F 76 69 64 65 72 49 64 3F 05 08 61 63 63 6F 75 6E 74 73 00 00 04 F5 B4 A5 81 FC F6 F9 EC C5 00 A8 A5 E5 DA ED F8 FD F7 E5 00 02 0B 72 65 61 6C 6D 2D 61 64 6D 69 6E 06 01 01 F5 B4 A5 81 FC F6 F9 EC C5 00 A8 A5 E5 DA ED F8 FD F7 E5 00 00 01 00 02 04 02 01 00 06 02 03 02 01 00 11 6A 77 74 2F 63 65 6E 74 72 61 6C 2D 6F 77 6E 65 72 06 02 04 02 01 00 0B 72 65 61 6C 6D 2D 61 64 6D 69 6E 00 00 01 05 F5 B4 A5 81 FC F6 F9 EC C5 00 A8 A5 E5 DA ED F8 FD F7 E5 00 02 0E 0C 00 00 02 02 01
Received: DOWNLOAD CHANGESET(server_version=12, client_version=0, origin_timestamp=119025076163, origin_file_ident=2, original_changeset_size=243, changeset_size=243)
Changeset: 3F 00 04 55 73 65 72 3F 01 07 69 73 41 64 6D 69 6E 3F 02 07 41 63 63 6F 75 6E 74 3F 03 08 70 72 6F 76 69 64 65 72 3F 04 0A 70 72 6F 76 69 64 65 72 49 64 3F 05 08 61 63 63 6F 75 6E 74 73 00 00 04 E7 AB C7 A5 E1 B6 BF C4 E9 01 D3 B0 F1 FF C9 F1 B1 BD D0 01 02 1F 73 79 73 74 65 6D 2D 61 63 63 65 73 73 69 62 69 6C 69 74 79 2D 74 65 73 74 73 2D 75 73 65 72 06 01 01 E7 AB C7 A5 E1 B6 BF C4 E9 01 D3 B0 F1 FF C9 F1 B1 BD D0 01 00 00 00 02 04 02 02 00 06 02 03 02 02 00 11 6A 77 74 2F 63 65 6E 74 72 61 6C 2D 61 64 6D 69 6E 06 02 04 02 02 00 1F 73 79 73 74 65 6D 2D 61 63 63 65 73 73 69 62 69 6C 69 74 79 2D 74 65 73 74 73 2D 75 73 65 72 00 00 01 05 E7 AB C7 A5 E1 B6 BF C4 E9 01 D3 B0 F1 FF C9 F1 B1 BD D0 01 02 0E 0C 00 00 02 02 02
Received: DOWNLOAD CHANGESET(server_version=13, client_version=0, origin_timestamp=119025559655, origin_file_ident=2, original_changeset_size=203, changeset_size=180)
Changeset: 3F 00 04 55 73 65 72 3F 01 07 69 73 41 64 6D 69 6E 3F 02 07 41 63 63 6F 75 6E 74 3F 03 08 70 72 6F 76 69 64 65 72 3F 04 0A 70 72 6F 76 69 64 65 72 49 64 3F 05 08 61 63 63 6F 75 6E 74 73 00 00 04 CA F1 CD DC 8C BF 9C DD 05 8F FD 81 EC E5 E0 A8 8C 3F 02 20 35 38 37 65 37 33 38 30 38 36 30 34 39 37 66 37 35 32 37 38 65 30 32 39 64 35 37 33 39 37 63 39 00 02 04 02 03 00 06 02 03 02 03 00 08 70 61 73 73 77 6F 72 64 06 02 04 02 03 00 05 61 64 6D 69 6E 00 00 01 05 CA F1 CD DC 8C BF 9C DD 05 8F FD 81 EC E5 E0 A8 8C 3F 02 0E 0C 00 00 02 02 03
Received: DOWNLOAD CHANGESET(server_version=14, client_version=0, origin_timestamp=119118101955, origin_file_ident=5, original_changeset_size=42, changeset_size=42)
Changeset: 3F 00 04 55 73 65 72 3F 01 07 69 73 41 64 6D 69 6E 00 00 06 01 01 CA F1 CD DC 8C BF 9C DD 05 8F FD 81 EC E5 E0 A8 8C 3F 00 01
Received: DOWNLOAD CHANGESET(server_version=15, client_version=0, origin_timestamp=119118127936, origin_file_ident=2, original_changeset_size=322, changeset_size=322)
Changeset: 3F 00 09 52 65 61 6C 6D 46 69 6C 65 3F 01 09 72 65 61 6C 6D 54 79 70 65 3F 02 09 73 79 6E 63 4C 61 62 65 6C 3F 03 04 55 73 65 72 3F 04 05 6F 77 6E 65 72 3F 05 09 63 72 65 61 74 65 64 41 74 00 00 04 99 F1 D7 F8 83 8F 9D 9C C3 01 96 F3 C4 AC C6 B4 B3 89 B0 01 02 DC 00 2F 64 65 66 61 75 6C 74 2F 5F 5F 70 61 72 74 69 61 6C 2F 35 38 37 65 37 33 38 30 38 36 30 34 39 37 66 37 35 32 37 38 65 30 32 39 64 35 37 33 39 37 63 39 2F 64 39 32 66 32 64 30 34 65 61 36 37 64 62 65 30 33 66 65 30 32 39 36 63 63 33 33 38 65 62 38 63 61 35 37 32 66 31 61 37 06 02 01 99 F1 D7 F8 83 8F 9D 9C C3 01 96 F3 C4 AC C6 B4 B3 89 B0 01 00 07 70 61 72 74 69 61 6C 06 02 02 99 F1 D7 F8 83 8F 9D 9C C3 01 96 F3 C4 AC C6 B4 B3 89 B0 01 00 07 64 65 66 61 75 6C 74 06 0C 04 99 F1 D7 F8 83 8F 9D 9C C3 01 96 F3 C4 AC C6 B4 B3 89 B0 01 00 03 CA F1 CD DC 8C BF 9C DD 05 8F FD 81 EC E5 E0 A8 8C 3F 06 08 05 99 F1 D7 F8 83 8F 9D 9C C3 01 96 F3 C4 AC C6 B4 B3 89 B0 01 00 AF CE F8 DD 05 80 F4 A8 BE 03
Received: DOWNLOAD CHANGESET(server_version=16, client_version=0, origin_timestamp=119120628443, origin_file_ident=2, original_changeset_size=317, changeset_size=317)
Changeset: 3F 00 09 52 65 61 6C 6D 46 69 6C 65 3F 01 09 72 65 61 6C 6D 54 79 70 65 3F 02 09 73 79 6E 63 4C 61 62 65 6C 3F 03 04 55 73 65 72 3F 04 05 6F 77 6E 65 72 3F 05 09 63 72 65 61 74 65 64 41 74 00 00 04 A6 C0 A4 C6 AA A3 E3 EC 2F 99 B7 CE BF D8 9E A6 CA C0 01 02 DC 00 2F 64 65 66 61 75 6C 74 2F 5F 5F 70 61 72 74 69 61 6C 2F 35 38 37 65 37 33 38 30 38 36 30 34 39 37 66 37 35 32 37 38 65 30 32 39 64 35 37 33 39 37 63 39 2F 37 65 35 36 38 34 36 33 36 66 39 63 62 31 32 31 35 32 35 63 64 62 66 38 31 32 33 39 31 32 64 36 31 30 66 39 62 38 62 30 06 02 01 A6 C0 A4 C6 AA A3 E3 EC 2F 99 B7 CE BF D8 9E A6 CA C0 01 00 07 70 61 72 74 69 61 6C 06 02 02 A6 C0 A4 C6 AA A3 E3 EC 2F 99 B7 CE BF D8 9E A6 CA C0 01 00 07 64 65 66 61 75 6C 74 06 0C 04 A6 C0 A4 C6 AA A3 E3 EC 2F 99 B7 CE BF D8 9E A6 CA C0 01 00 03 CA F1 CD DC 8C BF 9C DD 05 8F FD 81 EC E5 E0 A8 8C 3F 06 08 05 A6 C0 A4 C6 AA A3 E3 EC 2F 99 B7 CE BF D8 9E A6 CA C0 01 00 F4 E1 F8 DD 05 C0 C9 9E D3 01
Received: DOWNLOAD CHANGESET(server_version=17, client_version=0, origin_timestamp=119125943861, origin_file_ident=2, original_changeset_size=237, changeset_size=237)
Changeset: 3F 00 04 55 73 65 72 3F 01 07 69 73 41 64 6D 69 6E 3F 02 07 41 63 63 6F 75 6E 74 3F 03 08 70 72 6F 76 69 64 65 72 3F 04 0A 70 72 6F 76 69 64 65 72 49 64 3F 05 08 61 63 63 6F 75 6E 74 73 00 00 04 FB FF AB CD 89 DD 94 96 9C 01 D3 C3 DC DE BF E6 ED A0 D6 01 02 20 62 36 39 30 65 32 37 31 30 62 37 39 37 34 64 63 37 34 35 32 36 32 62 34 66 61 62 30 30 35 36 37 06 01 01 FB FF AB CD 89 DD 94 96 9C 01 D3 C3 DC DE BF E6 ED A0 D6 01 00 00 00 02 04 02 04 00 06 02 03 02 04 00 09 61 6E 6F 6E 79 6D 6F 75 73 06 02 04 02 04 00 20 30 37 31 62 32 66 35 38 33 66 35 35 31 36 34 35 34 30 32 35 64 61 37 33 62 33 66 63 62 30 63 62 00 00 01 05 FB FF AB CD 89 DD 94 96 9C 01 D3 C3 DC DE BF E6 ED A0 D6 01 02 0E 0C 00 00 02 02 04
Received: DOWNLOAD CHANGESET(server_version=18, client_version=0, origin_timestamp=119125944405, origin_file_ident=2, original_changeset_size=319, changeset_size=319)
Changeset: 3F 00 09 52 65 61 6C 6D 46 69 6C 65 3F 01 09 72 65 61 6C 6D 54 79 70 65 3F 02 09 73 79 6E 63 4C 61 62 65 6C 3F 03 04 55 73 65 72 3F 04 05 6F 77 6E 65 72 3F 05 09 63 72 65 61 74 65 64 41 74 00 00 04 C0 84 EF F4 9A DF 9A 8F 3A F9 BB AC E9 8C B7 CB B9 E0 00 02 DC 00 2F 64 65 66 61 75 6C 74 2F 5F 5F 70 61 72 74 69 61 6C 2F 62 36 39 30 65 32 37 31 30 62 37 39 37 34 64 63 37 34 35 32 36 32 62 34 66 61 62 30 30 35 36 37 2F 63 61 39 38 33 37 30 61 37 64 32 37 65 36 65 66 31 35 64 30 32 33 62 61 61 39 61 38 64 39 61 66 65 37 30 65 39 61 32 35 06 02 01 C0 84 EF F4 9A DF 9A 8F 3A F9 BB AC E9 8C B7 CB B9 E0 00 00 07 70 61 72 74 69 61 6C 06 02 02 C0 84 EF F4 9A DF 9A 8F 3A F9 BB AC E9 8C B7 CB B9 E0 00 00 07 64 65 66 61 75 6C 74 06 0C 04 C0 84 EF F4 9A DF 9A 8F 3A F9 BB AC E9 8C B7 CB B9 E0 00 00 03 FB FF AB CD 89 DD 94 96 9C 01 D3 C3 DC DE BF E6 ED A0 D6 01 06 08 05 C0 84 EF F4 9A DF 9A 8F 3A F9 BB AC E9 8C B7 CB B9 E0 00 00 B8 8B F9 DD 05 C0 9E 8F C1 01
Received: DOWNLOAD CHANGESET(server_version=19, client_version=0, origin_timestamp=119221571875, origin_file_ident=2, original_changeset_size=237, changeset_size=237)
Changeset: 3F 00 04 55 73 65 72 3F 01 07 69 73 41 64 6D 69 6E 3F 02 07 41 63 63 6F 75 6E 74 3F 03 08 70 72 6F 76 69 64 65 72 3F 04 0A 70 72 6F 76 69 64 65 72 49 64 3F 05 08 61 63 63 6F 75 6E 74 73 00 00 04 FF E6 E6 8D A6 9F DC 85 B8 01 CC D9 B6 E9 B8 99 A4 98 DF 01 02 20 66 39 36 62 35 34 36 37 66 35 38 64 63 61 37 36 66 36 64 65 64 66 30 62 36 34 65 31 34 37 32 38 06 01 01 FF E6 E6 8D A6 9F DC 85 B8 01 CC D9 B6 E9 B8 99 A4 98 DF 01 00 00 00 02 04 02 05 00 06 02 03 02 05 00 09 61 6E 6F 6E 79 6D 6F 75 73 06 02 04 02 05 00 20 62 31 64 34 61 30 32 32 65 37 34 33 33 65 31 37 61 36 37 30 39 32 63 33 66 66 30 36 34 65 36 64 00 00 01 05 FF E6 E6 8D A6 9F DC 85 B8 01 CC D9 B6 E9 B8 99 A4 98 DF 01 02 0E 0C 00 00 02 02 05
Received: DOWNLOAD CHANGESET(server_version=20, client_version=0, origin_timestamp=119221573405, origin_file_ident=2, original_changeset_size=319, changeset_size=319)
Changeset: 3F 00 09 52 65 61 6C 6D 46 69 6C 65 3F 01 09 72 65 61 6C 6D 54 79 70 65 3F 02 09 73 79 6E 63 4C 61 62 65 6C 3F 03 04 55 73 65 72 3F 04 05 6F 77 6E 65 72 3F 05 09 63 72 65 61 74 65 64 41 74 00 00 04 C0 E3 A0 CD C2 D2 E7 AD FD 01 A8 EB B2 F0 AC A7 FB 97 34 02 DC 00 2F 64 65 66 61 75 6C 74 2F 5F 5F 70 61 72 74 69 61 6C 2F 66 39 36 62 35 34 36 37 66 35 38 64 63 61 37 36 66 36 64 65 64 66 30 62 36 34 65 31 34 37 32 38 2F 33 33 61 31 62 62 30 64 62 63 33 61 34 64 65 39 65 65 63 63 66 34 62 63 34 38 61 62 63 39 32 62 32 61 37 38 61 61 37 30 06 02 01 C0 E3 A0 CD C2 D2 E7 AD FD 01 A8 EB B2 F0 AC A7 FB 97 34 00 07 70 61 72 74 69 61 6C 06 02 02 C0 E3 A0 CD C2 D2 E7 AD FD 01 A8 EB B2 F0 AC A7 FB 97 34 00 07 64 65 66 61 75 6C 74 06 0C 04 C0 E3 A0 CD C2 D2 E7 AD FD 01 A8 EB B2 F0 AC A7 FB 97 34 00 03 FF E6 E6 8D A6 9F DC 85 B8 01 CC D9 B6 E9 B8 99 A4 98 DF 01 06 08 05 C0 E3 A0 CD C2 D2 E7 AD FD 01 A8 EB B2 F0 AC A7 FB 97 34 00 C5 F6 FE DD 05 C0 9E 8F C1 01
Received: DOWNLOAD CHANGESET(server_version=21, client_version=0, origin_timestamp=119442393401, origin_file_ident=2, original_changeset_size=317, changeset_size=317)
Changeset: 3F 00 09 52 65 61 6C 6D 46 69 6C 65 3F 01 09 72 65 61 6C 6D 54 79 70 65 3F 02 09 73 79 6E 63 4C 61 62 65 6C 3F 03 04 55 73 65 72 3F 04 05 6F 77 6E 65 72 3F 05 09 63 72 65 61 74 65 64 41 74 00 00 04 D6 CB E6 D1 80 E9 B3 F3 CD 01 99 82 B2 C2 A8 95 C7 F2 15 02 DC 00 2F 64 65 66 61 75 6C 74 2F 5F 5F 70 61 72 74 69 61 6C 2F 35 38 37 65 37 33 38 30 38 36 30 34 39 37 66 37 35 32 37 38 65 30 32 39 64 35 37 33 39 37 63 39 2F 31 61 38 64 30 31 32 30 30 65 36 64 31 38 35 63 31 64 66 62 31 38 37 64 66 64 31 61 31 39 62 36 65 64 62 36 33 35 34 62 06 02 01 D6 CB E6 D1 80 E9 B3 F3 CD 01 99 82 B2 C2 A8 95 C7 F2 15 00 07 70 61 72 74 69 61 6C 06 02 02 D6 CB E6 D1 80 E9 B3 F3 CD 01 99 82 B2 C2 A8 95 C7 F2 15 00 07 64 65 66 61 75 6C 74 06 0C 04 D6 CB E6 D1 80 E9 B3 F3 CD 01 99 82 B2 C2 A8 95 C7 F2 15 00 03 CA F1 CD DC 8C BF 9C DD 05 8F FD 81 EC E5 E0 A8 8C 3F 06 08 05 D6 CB E6 D1 80 E9 B3 F3 CD 01 99 82 B2 C2 A8 95 C7 F2 15 00 D9 B3 8C DE 05 C0 8C 9B BF 01
Connection[1]: Session[1]: Received: DOWNLOAD(download_server_version=21, download_client_version=0, latest_server_version=21, latest_server_version_salt=7217337837575967989, upload_client_version=0, upload_server_version=0, downloadable_bytes=4920, num_changesets=21, ...)
Using already open Realm file: Path\realm-object-server\listener\realms.realm

Related

Manually Parse Form Data Node.js Express

How can I parse form-data manually at node js?
I get chunks of the large file at the server side. And can't merge it, because it will borrow RAM equals to the (file size + file info size).
As far as I understand, I can't use the libraries, such as multer/connect-busboy/connect-multiparty etc.
In simple terms, now I get following data at server side and can't figure out how to receive, example, a file name, and how to determine, which byte is responsible for the beginning of the file.
[1] Get request...
[1] data: <Buffer 2d 2d 2d 2d 2d 2d 57 65 62 4b 69 74 46 6f 72 6d 42 6f 75 6e 64 61 72 79 62 66 30 31 63 62 36 38 71 4d 41 4d 36 6d 51 31 0d 0a 43 6f 6e 74 65 6e 74 2d ... 65486 more bytes>
[1] data: <Buffer 02 10 00 00 01 ce 00 00 01 ef 00 00 14 e4 00 00 01 de 00 00 01 b2 00 00 01 d8 00 05 f0 1a 00 00 06 70 00 00 00 fa 00 00 00 cf 00 00 0a 3b 00 00 01 4a ... 65486 more bytes>
[1] data: <Buffer 31 52 2e 9a 5b df 11 19 5f c2 5d 38 ed db 23 00 06 05 bd 8f 71 e7 6b 03 9d 3a 88 e3 24 10 00 0f a1 10 43 82 ff 67 bd 5d eb 8e 59 fe a9 d3 e6 45 f2 9e ... 65486 more bytes>
[1] data: <Buffer 2b 6c cf 18 40 13 d8 fd 09 fa 56 25 e6 6d 6a 57 94 8c a4 9c d1 7b 99 bb 20 c0 21 e7 4a 1f 72 5a a5 3d 8e 84 5d 97 eb 1b 0f db b1 a9 81 f9 db ef 06 36 ... 65486 more bytes>
[1] data: <Buffer bb 29 4b 0d 06 1d 69 e1 c7 47 a7 99 c6 e4 c3 48 2e 85 6a b3 57 01 68 09 00 aa 6d b4 7b c7 07 2f 73 c0 c4 6b c4 48 9b 8f 81 64 8e 25 c7 a3 de c3 4f 2a ... 65486 more bytes>
[1] data: <Buffer 21 2b 1c dd 57 02 23 f5 43 a1 70 72 b4 8d 8d a8 4a 4b c1 e1 21 75 84 ed 07 00 34 de 5c 8d b0 0a 6f 99 60 28 34 b1 c5 bd a2 3c 3e d5 01 0f 62 57 a8 e8 ... 65486 more bytes>
[1] data: <Buffer 2d 96 e3 47 75 ce 25 63 77 26 15 96 b6 43 b9 d2 59 7d 12 c9 64 b2 11 f2 39 29 3e bf 83 1a f3 15 7b 14 ee f3 33 52 5c 39 34 75 06 41 2f e7 11 e8 26 4e ... 65486 more bytes>
[1] data: <Buffer 4a 9d 20 c7 a8 55 35 22 26 ff c7 b4 11 d9 6c 4d ce e1 a0 b2 b3 01 37 da 6a ad ae 98 fd 9b 8e 9c 8b 4a 27 8e e3 10 4a dc 80 f2 50 df 88 d9 c8 f9 ef 48 ... 65486 more bytes>
[1] data: <Buffer 52 ee b3 96 1f 7c af df fa 3f 9c 9a f7 01 20 7d 3f ea 4e 7e aa 4e d9 57 31 cb b5 f3 09 49 c7 ee 92 83 2e cb 58 d2 ea 1b b0 35 2a 3c 6c 27 75 0c d0 39 ... 65486 more bytes>
...more
...more
...and more
After receiving all the above data, I need to get file name and send each chunk of the file(not other info, such as name/mime type) to another client. (It's file sharing web resource)
Another solutions?
At the same time, I could to send the file separated manually by the chunks of type ArrayBuffer. Each chunk would be encoded additional information, like a "file name", "mime type". But in this case, I should to separate file at client side and get again the above problem the lack of memory.
A working solution, but a bit insecure. Send the file name and mime type separately from the main file data.
The part of the code responsible for sending data:
app.get(`/${senderId}/get`, (request, response) => {
let countChunks = 0;
// waiting for the sender's request now...
app.post(`/${senderId}/send`, (requestSender, responseSender) => {
// start sharing...
let countChunks = 0;
requestSender.on("data", (chunk) => {
if (countChunks === 0) {
// need get the name from the chunks
const fileName = "test_name";
response.setHeader("Content-Disposition", `attachment; filename="${fileName}"`);
}
countChunks += 1;
// need to get the first byte of the file data and start sending starting with it
response.write(chunk);
})
requestSender.on("end", () => {
response.end();
})
})
})

How is socket.io secured natively?

I'm looking at socket.io packets and they are TCP. When I review the value, I see encrypted data. Where and how is socket.io encrypting the messages that pass through the soccket? Is it really secure? This is a VM running with requests over http.
For example, I see
0000 bc ec 23 c3 64 6a 00 15 5d 01 59 06 08 00 45 08 ..#.dj..].Y...E.
0010 00 58 68 cc 40 00 40 06 4e 6c c0 a8 01 05 c0 a8 .Xh.#.#.Nl......
0020 01 0a 00 16 c6 51 15 15 7f 44 69 87 60 58 50 18 .....Q...Di.\XP.`
0030 0b 2e 6c ae 00 00 8b 6f 92 7f b9 1b c2 d6 54 60 ..l....o......T
0040 5e 24 65 2a 0c d6 87 90 fd 87 63 30 9d 69 11 26 ^$e*......c0.i.&
0050 4d 75 8c 7b 5e b2 ad 47 12 9d 05 d0 7c 3b 7c 9e Mu.{^..G....|;|.
0060 b1 0d a0 b7 f1 88 ......

Error in appending to Bytes buffer in for loop and does not concat the entire array [Nodejs]

I am trying to read files in a directory, for each file I am converting it into bytes array and appending everything in combinedBuffer array. Now I want to add all bytes buffer in combinedBuffer to finalBuffer, But I am not able to achieve this, it just iterate over the first bytes buffer in combinedBuffer rather than iterating over the entire combinedBuffer Array.
fileRead = async function(file){
const testFolder = './items/';
var dirFiles = [] // dirFiles Array
fs.readdirSync(testFolder).forEach(file => {
dirFiles.push(file)
})
dirFiles.sort(compareBasedonInt) //Natural Compare is to sort files in sampleFile1, SampleFile2.
var combinedBuffer = []
dirFiles.forEach(function(file){
var eachfileBuffer= fs.readFileSync('./items/'+file) //eachfileBuffer is the bytes buffer which we get after reading the file
combinedBuffer.push(eachfileBuffer)
})
var finalbuffer = Buffer.concat(combinedBuffer)
console.log("final buffer", finalbuffer) // finalBuffer shows just first element of combinedBuffer
console.log("combinedBuffer", combinedBuffer) // shows the array of all the bytes buffer
}
Output
combinedBuffer [ <Buffer 2f 51 40 42 0b 0a 53 0c 4a 25 05 55 7f 06 32 79 0d 50 47 0c 5d 3e 59 0b 51 54 40 5c 4a 5e 53 4f 15 05 4d 1f 41 4e 23 07 1f 52 5f 1f 52 48 14 52 4e 52 ... >,
<Buffer 19 42 01 0d 46 59 4a 58 1a 38 60 06 4a 11 2d 5c 70 65 2e 5a 17 0f 54 14 09 2a 05 14 38 34 47 0f 0e 42 5f 26 56 49 07 19 12 11 5e 4e 01 55 0b 41 26 72 ... >,
<Buffer 17 1a 11 5d 4d 19 1e 44 45 45 57 5f 05 49 19 1a 18 2a 23 27 46 00 47 45 17 45 1c 4f 5b 4f 4b 53 45 55 3e 4b 1d 08 4b 15 1a 1c 18 66 50 1a 4f 55 18 05 ... >,
<Buffer 44 0a 06 50 16 10 58 1b 15 40 07 22 58 0b 51 4e 08 07 46 6f 7c 66 12 57 4e 1d 1b 09 04 4a 40 4f 1e 11 5f 41 41 74 62 5f 76 43 5e 0d 1a 01 1a 0c 7d 44 ... >,
<Buffer 3c 09 5f 5c 6c 15 5c 02 15 5d 00 40 03 09 46 54 49 16 5c 5a ff 9f a2 45 43 00 46 46 65 1b 11 5c 5d 54 29 46 44 07 02 14 45 4b 31 6a 3a 4d 0a 58 18 47 ... >,
<Buffer 6d 4a 19 1b 85 bd ec 0c 0f 0f 4c 4a 41 08 09 1b 4f 0b 0a 1d 41 11 53 4b 1e 41 49 1e ce aa ad 11 22 1d 0f 52 46 1b 7a 0b 0e 15 1e 41 53 02 10 19 4f 01 ... >,
<Buffer 03 58 69 48 04 5f 52 02 08 56 1f 07 76 4e 1d 53 12 5e 5e 58 47 0a 5a 44 77 06 16 5e 03 4a 4d 56 56 01 1f 0b 0c 0c 40 45 0e 0c 4e 08 1b 12 1a 45 4e 50 ... >,
<Buffer 4d 5c 0c 4e 1d c2 a2 f9 1b 11 16 5f 52 00 0c 02 54 40 4d 17 0d 58 4c 1b 24 5b 12 41 4b 47 1a 0a 43 50 7c 6d 34 46 42 5a 43 42 43 38 1b 4b 53 57 5f 43 ... >,
<Buffer 49 4e 1a 13 1c 19 0b 0a 5d 19 41 46 06 14 15 51 15 15 56 57 1c 5d 09 1e 00 41 4a 6f 13 0a 60 60 64 16 4c 01 1e 49 46 0e 50 1d 51 56 5c 09 0e 37 16 12 ... >,
<Buffer 58 1d 4f 5b 4c 33 09 4f 08 19 04 1b 69 7e 2d 5d 22 95 be 8b 14 1b 76 4b 07 21 1f 4f 05 4b 30 2e 02 57 07 00 4d 5f 45 1c 08 39 37 37 41 47 25 09 05 4d ... >,
<Buffer 58 42 43 1f 5e 1e 01 17 54 04 52 1c 1a 04 42 48 52 48 3e 03 05 12 4c 16 5a 49 7e 14 49 53 1a 6f 6f 2f 46 54 54 07 00 7a 23 0a 1c 3b 56 0f 73 0a 00 0b ... >]
finalbuffer <Buffer 2f 51 40 42 0b 0a 53 0c 4a 25 05 55 7f 06 32 79 0d 50 47 0c 5d 3e 59 0b 51 54 40 5c 4a 5e 53 4f 15 05 4d 1f 41 4e 23 07 1f 52 5f 1f 52 48 14 52 4e 52 ... >

Decoding RS485 signal

I'm spying on some RS485 communication between two devices. The only information I know is that the master is 'pinging' the slave constantly. Its checking if it is still connected and functioning.
The first i need to detect is the correct properties of the signal (baud rate, data bits, parity, stop bits).
My idea is to listen on the communication using all the most common settings. Then I would write an algorithm that would look for patterns in the string of hex numbers. Is that a good approach? (note. I don't have an oscilloscope )
I first used most common settings 115200 8n1, and at a first glance it seems that they are correct.
There are 6 repeating patterns in the raw code. I'm assuming that those are the actual commands for the protocol. Now how to decode the protocol used here? If it is not some in-house protocol that they used. Note here that the slave is disconnected and this is just transmissions from master.
1. 00 02 c0 fe ff 22 00 08 2a
2. 00 02 c0 ff fe 12 00 19 6e
3. 00 02 c0 ff 01 12 00 7a a1
4. 00 02 c0 01 ff 62 00 67 6c
5. 00 02 c0 01 ff 32 00 d8 62
6. 00 02 c0 01 ff 22 00 ab 61
There are a bunch of random hex values in between the patterns. Due to the nature of the RS485 signal I'm assuming that this is just noise?
Here is the the full captured data
02 c0 ff fe 12 00 19 6e 28 68 cb c2 9f 12 ed 13
c5 13 3f 09 92 dd 26 d6 64 7f 00 02 c0 fe ff 22
00 08 2a 2f 20 0d 0c 37 3a 0c 0a c1 58 f4 8e 21
4b ce 12 a8 b0 4e 16 80 8c a8 06 3a 09 9c c8 24
49 33 01 42 04 00 02 c0 ff fe 12 00 19 6e 77 92
59 43 9e 65 85 63 ab ff 71 62 a8 69 46 d3 53 b9
00 02 c0 fe ff 22 00 08 2a bd 4a ef 4d 60 00 1a
37 6c df e1 fc 1f 3e 04 61 a8 ad 4d e3 28 c8 23
68 31 28 39 ee 01 d9 12 27 5e 6d 00 02 c0 ff fe
12 00 19 6e df 00 76 b4 f9 aa 22 47 a7 47 9f b9
a4 4b 44 84 cf e5 00 02 c0 fe ff 22 00 08 2a 2a
a4 4a cb a0 ca a9 ca ad ca 00 72 ca 0f c2 ac b4
1c c8 37 21 97 bc c3 af f8 27 71 be 3e 75 f0 94
54 00 02 c0 ff 01 12 00 7a a1 7a bd 2b b0 f5 64
e7 b2 76 76 33 1b 7e 22 b2 a1 17 30 00 02 c0 01
ff 62 00 67 6c 45 c3 4a 8c 3a d0 d2 03 c7 39 1a
c5 15 8c e0 ac 9e e9 01 46 0d 6f 75 cd ad af 17
08 c8 e1 29 78 66 9a 29 0e 2b 30 56 8e 1f 0e 5a
7b 16 15 b2 51 2c e9 4b 4c 40 6b a2 8b 73 6a d2
8b f9 da 58 9b 02 de 71 f8 1c 0a c0 08 38 72 51
ac c8 bc 75 c8 2f 69 3d 53 ed c1 46 90 6a 26 44
09 4e f9 13 ed 0b 71 00 02 c0 ff 01 12 00 7a a1
19 4f a5 ce 15 02 50 ff 81 7f 10 db 8e 38 d1 da
b3 11 00 02 c0 01 ff 32 00 d8 62 fa f6 0b e8 e0
6f 8a 82 d3 e0 36 f5 be 79 cb ab 32 b8 17 a9 dd
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48 8b 0c 44 42 62 12 19 00 02 c0 ff 01 12 00 7a
a1 61 89 92 d8 93 39 d4 e5 bc cf e3 4f 3f ec 77
98 29 71 00 02 c0 01 ff 22 00 ab 61 15 c3 bd 73
4c d9 e7 8f ee 36 c6 78 ef 2c 61 4a 4d 69 44 ea
eb 7d 54 f7 5a 62 7a 2d 8f fa 23 fb 27 a2 00 02
c0 ff fe 12 00 19 6e f9 21 59 19 8b ca bb 5e e7
71 8c c4 77 5e 92 60 8a 52 00 02 c0 fe ff 22 00
08 2a e9 c4 0c d5 54 bd 47 2b a3 eb b4 d5 ef 43
e2 d2 ed ad f4 34 29 b6 c9 40 68 fb 67 6e 6a 21
f5 db 6b b2 00 02 c0 ff 01 12 00 7a a1 43 14 64
f5 0d a6 a8 54 00 75 6a cf 1f 7b ee b7 d1 df 00
02 c0 01 ff 62 00 67 6c 96 5a d6 9f 43 78 c8 a3
a2 10 83 53 a9 66 b1 cc c1 60 62 9d bd 4d 0a dc
b5 01 cc 3a ad a5 4a 7c 50 2c 97 ce c3 36 30 ff
7d 2a ae 08 db 08 e7 c3 90 29 e2 d4 d2 06 86 14
e5 d1 49 81 b4 b4 14 0d a6 25 ea 50 45 df 8b d6
1f b5 83 b2 b3 e4 de 27 af 49 bb 58 1e f1 74 83
9e 33 17 63 59 42 9d 1f 6c a2 00 02 c0 ff 01 12
00 7a a1 fb b7 80 52 1e d6 26 cb e4 ca 70 5e 1e
b1 a5 40 2e 29 00 02 c0 01 ff 32 00 d8 62 77 c8
c6 57 f1 47 fd 9a 8c 2a ec 19 7e e1 6b 46 4d ff
82 3b 9c b0 b0 7b ac 7b cb f1 8f ce eb b2 73 c4
ac ff 9c 2c 76 a6 ca 68 f2 ee d7 ed 97 27 f9 c9
00 02 c0 ff fe 12 00 19 6e 67 2f 16 65 c6 e0 3c
86 21 30 61 ac fa 5c 1b c4 4f 6a 00 02 c0 fe ff
22 00 08 2a 1f b1 95 5d 63 1e a0 54 23 18 f5 53
b7 5f e9 7a 8e 5e d5 9f be f8 82 a2 6d ef a0 14
1c 04 10 1a 2c df 00 02 c0 ff fe 12 00 19 6e 0d
d9 a5 87 d8 58 b5 97 4a ef 7a 58 a2 ae e9 d5 97
3c 00 02 c0 fe ff 22 00 08 2a c0 1a 92 df 88 4d
48 4d 6b 2b dd d4 ea 7b ac e7 a9 c5 26 9b 3f df
ac 93 5c 1a 05 e0 f0 50 24 31 19 1e 00 02 c0 ff
fe 12 00 19 6e c9 2c de a4 7a c0 68 6b 30 08 1d
84 e7 f2 01 bf 9b 65 00 02 c0 fe ff 22 00 08 2a
20 66 15 64 f4 68 c3 ba 39 06 39 ea a4 d4 80 b6
bb 3c fc a7 70 7c f0 a4 07 b4 e9 90 ec 35 4d 7b
77 7a 00 02 c0 ff 01 12 00 7a a1 18 22 1f 60 23
99 1c 14 d4 2b 98 a8 d7 8b c5 6d 27 28 00 02 c0
01 ff 62 00 67 6c 4f 4f 9a 7d 4d 0e 81 61 fc 71
6f 3d d6 5c bf 57 41 36 25 eb 01 6d c6 77 4f de
0f 6f 00 9f 70 5b 94 16 31 fd c8 b2 a7 10 eb d8
64 ca 15 ab f1 84 0b 55 ce 60 fd 6d 4a 11 99 6c
12 96 45 a6 fa 69 b1 bf e7 c6 7a 50 df 66 2e 48
cb 6f 9f 80 40 92 11 5f 04 19 89 d7 f3 25 10 9f
6a 16 fe 4b 9e fb a5 3d 00 02 c0 ff 01 12 00 7a
a1 e3 a0 11 0e ab d2 2a 04 e0 16 d2 72 9d c4 c3
30 a9 e9 00 02 c0 01 ff 32 00 d8 62 93 9f 3d 93
60 28 1a fa 16 0d 3e 47 13 94 37 5c fb 87 25 2e
2a 86 fb 1b d3 5e c7 0b 46 54 59 ce c8 11 22 a5
3a e4 58 9c e3 02 84 6e d3 74 87 27 f6 12 00 02
c0 ff 01 12 00 7a a1 f1 4a 8b c8 4e 3a b9 d3 cc
58 a2 2f 2d 20 07 1a ad d8 00 02 c0 01 ff 22 00
ab 61 cb 62 13 3e a0 1a 2f fc 1e 86 83 7e 7a d5
31 c1 f5 68 cb 03 bc 0c c7 69 11 91 d0 08 21 f2
63 05 b1 71 00 02 c0 ff fe 12 00 19 6e c0 2d af
35 23 bf 89 b5 31 36 a6 b6 7b fd 91 55 19 e0 00
02 c0 fe ff 22 00 08 2a f9 8b 60 f7 e2 e0 4b 3e
de 0b 1a 6b b9 61 0e 64 3b 4f fd b4 5d 81 93 2b
ad 80 e2 19 35 a7 4f 72 fc 89 00 02 c0 ff 01 12
00 7a a1 8f 77 18 5a 62 3f ba ea cb f7 77 fd 20
6f 5d 3f 88 e3 00 02 c0 01 ff 22 00 ab 61 3b 34
a6 7f 69 85 2a 3e 29 41 e4 26 a7 d4 e8 0f 8f 36
d3 61 0c 82 a9 ef 7e 7f 37 03 3a f8 36 a5 04 f2
00 02 c0 ff fe 12 00 19 6e 36 89 d1 70 39 4c 22
89 77 85 3e ca cc 09 19 2a 3a 95 00 02 c0 fe ff
22 00 08 2a 00 d9 76 db 9c f6 ef 75 fc 6c 67 5f
4b 7e 66 6d 52 e1 db 8b c9 96 cb da b4 e0 38 38
e0 62 12 41 a3 12 00 02 c0 ff 01 12 00 7a a1 4b
ca 4b 50 d4 94 34 4d ba 91 4b 94 52 0c 06 90 54
6d 00 02 c0 01 ff 62 00 67 6c ff e4 d5 53 e4 78
11 6d 40 cc f5 a1 08 b0 9f a6 66 aa 00 da 3b 43
74 72 56 1e a3 fc 56 33 45 4f fc c1 77 02 3e 57
b5 c1 5e 0b 6d a7 4c ed ee fe 4e 0b 56 b6 54 1a
0f 74 69 97 47 a9 86 64 08 ab e6 10 da 1c 1e d8
88 34 36 f6 15 70 a2 0c 11 a9 4b 30 f2 11 0e 4e
5e 3c 51 1f 66 92 0f ac 7e b5 35 cd 00 02 c0 ff
01 12 00 7a a1 dd b7 48 04 55 0f a3 82 77 d4 41
07 ba 43 1f a0 1b 1a 00 02 c0 01 ff 32 00 d8 62
43 b3 2d 70 1d d0 98 4d 1e 6a e2 a2 44 33 aa 50
de 85 9e 0f ca f1 07 11 c0 58 e4 82 6b 17 e1 6e
26 5a ca c0 85 d2 99 85 53 9c 90 f0 61 43 be 52
99 76 00 02 c0 ff fe 12 00 19 6e 5e 6a b1 67 dd
34 1e 4a a9 c3 a0 55 1d 3e ad a3 85 3b 00 02 c0
fe ff 22 00 08 2a f5 d5 c1 b6 d0 12 71 76 cb 5c
bb 0b 9b f6 2c 30 09 d0 74 64 d7 d9 7b 9e 8b 8b
b2 1b fc dc ef 5f c1 e4 00 02 c0 ff fe 12 00 19
6e 71 39 a5 4d fd 53 dd 39 94 60 25 17 e4 e7 81
de 36 a8 00 02 c0 fe ff 22 00 08 2a 21 2a a6 37
d3 85 f6 90 7f 93 0f fc 48 63 a1 b4 d7 17 26 24
50 15 60 b1 51 c6 05 b3 56 d0 51 ad 3f 8f 00 02
c0 ff fe 12 00 19 6e da 32 e3 14 b1 72 89 d0 a8
9f 7c fe c9 01 ae c2 a3 0e 00 02 c0 fe ff 22 00
08 2a fd 9c aa de c6 5e 6d 5f 58 8f 55 a0 be 72
43 13 f5 e3 0b aa 59 2c 9b 34 85 43 02 8e 34 74
b5 06 a9 b3 00 02 c0 ff 01 12 00 7a a1 ad cc eb
40 1d df fb 8a ab 17 d7 58 03 1e 98 b4 ef 79 00
02 c0 01 ff 62 00 67 6c 89 b3 e8 5d e4 c0 bb 4a
76 43 da 38 d1 35 0a 7d 15 5a 7a a9 38 a8 dd 48
4f 8c 1e b7 54 a2 51 a5 0d 18 cd 4e 02 c7 15 b3
6e 7b d5 df a8 ee 55 ea 5e 19 1a fa d3 60 13 2c
6b 0c b2 46 bc b0 ac 59 af a2 49 5a 01 00 b6 4f
34 c4 51 59 19 fe fb 3b 2b 70 f9 d3 13 b7 13 48
8e 2c 11 6d 16 89 73 b4 b7 3b 00 02 c0 ff 01 12
00 7a a1 e4 b9 c3 88 99 17 9a 22 29 d2 03 59 07
15 74 3e 9a e5 00 02 c0 01 ff 32 00 d8 62 4a 8b
a5 56 3e a2 50 75 e7 08 2e a4 4f b5 8a c9 5e cb
40 53 88 43 8c 53 ed 14 61 d5 69 c1 75 cf 8b 2d
8e 92 c2 13 2b 11 f4 ea 08 bd 37 80 c9 d2 20 0b
00 02 c0 ff fe 12 00 19 6e 9a 3d 95 2e 6f 12 1c
f4 31 68 c2 df 06 31 91 0a ba b2 00 02 c0 fe ff
22 00 08 2a 3a 7b 0c 52 49 b1 3d a3 8b 7a 5a 83
1b 60 fe ab 06 01 b4 39 7a 9a 62 71 14 4e c7 c8
35 9a af 67 d2 89 00 02 c0 ff 01 12 00 7a a1 04
e6 a7 c8 99 6a 9f 35 f9 44 fe 13 f3 73 23 e8 2b
7e 00 02 c0 01 ff 22 00 ab 61 7b ad fe 14 3d a4
7a be bd 9c 43 ea 05 6c f6 7d 7d 5b d8 c0 56 cd
57 e8 dc 03 9e bf ca 7c c7 61 1a 10 00 02 c0 ff
fe 12 00 19 6e e3 6e 28 c5 3b 23 4f 6e fb f7 9e
dd f4 51 e7 f1 af 30 00 02 c0 fe ff 22 00 08 2a
58 c5 ca c9 9b 7d db a3 7a 42 e1 f3 c1 73 30 e6
2a 91 b3 d1 09 6c 1c a7 78 f2 47 99 81 b8 3c 27
de ee 00 02 c0 ff fe 12 00 19 6e f9 6e d3 4e 30
8d c6 97 8c d4 f5 1e dd f2 c0 6a d3 06 00 02 c0
fe ff 22 00 08 2a b0 42 60 64 c0 c8 87 6e 3a ab
34 1f f7 3f 43 d3 52 5a 7b 5f f6 2e a4 3e b0 21
51 57 96 6d 22 69 55 34 00 02 c0 ff 01 12 00 7a
a1 f3 12 30 21 55 c8 c5 dd 62 3e 87 6f c9 a2 85
89 6e 75 00 02 c0 01 ff 62 00 67 6c 36 99 60 30
e0 88 3c 80 60 46 22 bf 8f ad 0f 87 53 8a 2b f7
b3 b8 b7 a7 9c b6 ba 43 5f 39 a7 70 5a 35 2d 83
b5 dd a1 22 81 94 08 16 46 ea ee af 2c 81 3b c4
3e df 7b 66 ac 80 f6 c5 8e 8e bb ec fc f3 d6 38
05 cb eb 27 9c b3 df 79 e9 1d bf 88 7e 14 6c 5f
66 62 50 27 19 d8 bb 44 17 b2 13 69 f6 a4 00 02
c0 ff 01 12 00 7a a1 d7 e3 5f 66 fc 09 47 08 45
fe 43 90 0c a7 15 93 c3 5d 00 02 c0 01 ff 32 00
d8 62 59 35 0c 12 49 36 3b a5 fa de 52 1e 8a 92
0d 69 33 d6 b0 14 cb cb e4 c2 c6 74 4e c5 0b 1e
97 d6 0e 88 62 d2 09 c0 f1 94 ed 38 a8 71 c2 3e
9b 22 4f 3c 00 02 c0 ff fe 12 00 19 6e 7e 94 d1
13 4a bd 7c 83 ea 80 f1 a8 d1 52 35 98 23 36 00
02 c0 fe ff 22 00 08 2a 1e c1 e0 42 6b cd f9 b7
9f d4 88 15 5d 19 a0 fd 1c cb 12 8f b5 cf 09 20
1c 02 e1 52 b2 ff 70 b4 a2 44 00 02 c0 ff fe 12
00 19 6e c0 81 82 7f 75 52 38 eb 93 c5 ae d0 27
d0 b6 4e 2e af 00 02 c0 fe ff 22 00 08 2a 65 14
56 77 6f 85 64 c0 23 66 31 ea 0e cf 45 32 e2 b5
af 40 1b 09 e4 4c 45 c9 8d b5 74 3e e8 b3 c2 e8
00 02 c0 ff 01 12 00 7a a1 65 f0 87 52 d4 03 3d
b8 44 81 a8 c9 2a 0a 8c cb 98 ef 00 02 c0 01 ff
62 00 67 6c 63 bf 37 1f 0f 71 fc 3f 32 67 c7 49
5b c7 bf c7 eb bf 64 2d 8a 87 48 81 bf 46 04 4f
07 9e 6c 37 ec df f4 0b a3 0c 64 6d a1 e9 ed ba
6e 47 35 4c 9b 8c ca bb 3e 96 be 7d 56 51 2d ea
90 b4 43 42 02 51 4d ed 58 1c 1f 76 c5 fb 6e 76
7f 28 09 5c 2a ba e7 9d 2f b6 4f 6c 03 1b 94 59
3b 28 15 1a 86 8a 00 02 c0 ff 01 12 00 7a a1 2c
95 a2 f6 4c 56 f6 cc b6 23 29 fd 05 65 cb 78 bb
be 00 02 c0 01 ff 32 00 d8 62 de e2 b6 3f 05 92
d5 8c 37 5a 16 d5 05 16 62 1a a8 b3 10 cd 4f 32
80 a7 69 f1 5d 94 36 3d e8 c3 00 41 34 7d f4 2b
af 3f 5c 2a 24 58 14 f3 55 e7 44 9f 00 02 c0 ff
01 12 00 7a a1 05 f2 fa 47 69 d1 bf a8 28 57 fc
1d 80 ef 2f eb 00 85 00 02 c0 01 ff 22 00 ab 61
b5 d6 45 36 f8 6f f8 ca 6b 62 3f 66 69 c2 99 fc
0b a8 52 ba 64 f2 d7 99 a7 99 eb 72 04 e1 d1 51
f7 71 00 02 c0 ff fe 12 00 19 6e c1 0d fa 73 42
8c 7d 38 4b c1 f2 b6 da 51 d8 c1 f8 6a 00 02 c0
fe ff 22 00 08 2a 1f 1f ce aa 11 b5 bd 74 ac ef
98 96 77 9b c6 53 40 8f 6f 8e 2e b1 26 a3 7a 3b
b6 2a a3 08 9e 78 26 bc 00 02 c0 ff 01 12 00 7a
a1 92 0a 20 2f e4 2a d0 a1 b2 07 bd f6 7a 57 4f
d2 b2 50 00 02 c0 01 ff 22 00 ab 61 98 ef f0 8c
34 47 1b 00 cb 07 05 5d 13 3b d4 44 9d c3 36 5d
fb f5 0e cc 9c 01 0c da d4 10 b2 96 89 31 00 02
c0 ff fe 12 00 19 6e ea 6d bd e8 af fb 15 1f 87
ff c3 ee 58 97 6c 5a cb 9f 00 02 c0 fe ff 22 00
08 2a 40 2a 69 d4 25 46 bb 59 0d 34 75 47 a0 91
6c 2e d4 1e 7a 57 e8 95 15 7c 50 5d da 33 94 d8
2a 79 57 22 00 02 c0 ff 01 12 00 7a a1 43 db 54
8d 13 22 f8 62 eb 36 4f e7 c8 76 cf 5f bd 55 00
02 c0 01 ff 62 00 67 6c a3 52 91 a4 be 33 6f 86
88 38 96 01 78 ea 38 fa 19 30 86 33 b4 c0 f3 d2
8a 7a 05 d9 af fb 17 ea 9b a5 07 f1 ba 65 9d 83
49 88 8b 32 da cc e2 af 63 51 7f 00 b1 6a 7b 25
18 ca a3 82 a5 3e a0 2e 7c 9a 3e 05 ec cd e1 e3
ee d8 79 df e4 e0 f1 cb 02 f3 4e d5 8e 8c ed 17
8c 82 e1 f5 c1 e2 af 55 17 58 00 02 c0 ff 01 12
00 7a a1 8c 32 73 da 85 5d 6f d1 32 cf f4 48 06
0b a2 ac a9 30 00 02 c0 01 ff 32 00 d8 62 f4 bd
91 11 ca 66 dc de bf af 65 3b 7a c5 21 99 42 01
9e 8c d4 bd a7 c5 3b 9a e9 41 18 8c 9c ea 62 28
fa 83 93 61 4c 9d 1c 33 d3 3f 47 3a 5f bc 38 19
00 02 c0 ff fe 12 00 19 6e 8f 54 a1 ad 9f 45 5d
cb 22 de ab 90 5e f4 97 13 8d ed 00 02 c0 fe ff
22 00 08 2a 8a eb 1a 5b ee 12 60 fd eb ca be 61
1b 64 a6 57 f5 5f 92 1c eb 39 b0 95 1d 28 b1 c3
6d 95 54 a2 cf 7c 00 02 c0 ff fe 12 00 19 6e 8f
52 81 b6 06 a9 b9 59 75 68 b2 9c 65 63 86 55 c0
1c 00 02 c0 fe ff 22 00 08 2a 10 d9 9b 3d 3e 42
e9 3e 64 20 b1 36 b3 0d dd 83 5f f9 35 f9 7d 08
e0 ee d9 12 16 41 d7 31 b2 5f 11 bc 00 02 c0 ff
fe 12 00 19 6e 4a 42 1e 1c 6f 20 a6 ac 65 b7 ac
48 15 a7 8d c0 d3 71 00 02 c0 fe ff 22 00 08 2a
02 4c 52 d6 af 36 a3 1f 01 c8 3b d4 97 fd dc b9
be 71 64 c5 29 c7 ae 44 b8 ff fb 82 3b 68 59 08
6a 6f 00 02 c0 ff fe 12 00 19 6e 85 4d 84 21 eb
c8 47 c1 63 ba cf c5 73 87 1c 54 5d c3 00 02 c0
fe ff 22 00 08 2a 34 bd e3 99 75 02 3b 55 83 db
6a c3 fc 49 b1 a7 8a 80 bb 15 c2 4c 65 0d 53 b2
33 47 bc 7e 2c 21 49 f2 00 02 c0 ff 01 12 00 7a
a1 bf 81 13 e2 71 79 5a 5d 28 61 60 c0 1e d1 51
d9 32 05 00 02 c0 01 ff 62 00 67 6c 46 b1 40 0f
5c 7a db 02 7e 2e 1d c5 39 37 f3 ab 2c ee ae fa
69 d4 18 09 84 b4 95 f2 f0 ad 29 23 70 ba a6 49
d6 9b c0 fe 3f 9b 83 83 75 9b 28 73 6f e8 1f 9a
67 3c f2 37 33 83 cc ad 61 fb 76 4d de fa 16 33
68 15 85 e0 99 f9 ae d5 d4 25 c6 de 6a 0e b4 b5
ef 1d d6 56 40 e9 91 1f 1b e9 02 a1 ea 8a 00 02
c0 ff 01 12 00 7a a1 32 69 9a 88 af a2 ed 68 39
4f fe 8e d1 98 74 43 e8 8c 00 02 c0 01 ff 22 00
ab 61 24 21 12 1d d1 c6 6c ad 05

A partial answer, since nobody had other insights to offer:
Your serial settings are correct, and your master telegrams are ended by a non-standard 16 byte CRC checksum. I found this with a modified CRC puzzle solver I wrote for other CRC Stackoverflow posts. The Docklight CRC specs are CRC:16,1021,0000,0000,No,No and your checksum is in Little Endian format (low significant byte first) at the end of the telegram.
Here is the Docklight output including a test where I correctly re-created the first three master telegram checksums
Trying CRC spec : CRC:16,1021,0000,0000,No,No (LittleEndian)
Found it!
Relevant sequence for checksum from startpos=1 to endpos=7
00 02 C0 FE FF 22 00
CRC spec: CRC:16,1021,0000,0000,No,No (LittleEndian)
CRC result: 2A 08 (Integer = 10760)
Use the Send button to send some predefined sequences...
30.08.2017 14:00:08.494 [TX] - 00 02 C0 FE FF 22 00 08 2A
30.08.2017 14:00:09.028 [TX] - 00 02 C0 FF FE 12 00 19 6E
30.08.2017 14:00:09.411 [TX] - 00 02 C0 FF 01 12 00 7A A1
I will improve this answer later. Knowing now that every message has this CRC checksum at the end, Docklight should be able to split the full transfer into its individual protoocol frames.

Snort rules with content

This will generate an alert:
alert tcp any any <> any any (msg:"Test_A"; sid:3000001; rev:1;)
This will not:
alert tcp any any <> any any (msg:"Test_B"; content:"badurl.com"; http_header; sid:3000002; rev:1;)
I have tried: fast_pattern:only; metadata:service http; nocase; http_header; and others. I cannot get it to work at this generic level. Any ideas why the content attribute does not work? The packet has a URL.
Updated from the comments
0000 9c d2 4b 7d 96 60 3c 15 c2 dc 48 fa 08 00 45 00 ..K}.<. ..H...E.
0010 01 5c ac 2c 40 00 40 06 cf f5 c0 a8 c8 1e 41 fe .\.,#.#. ......A.
0020 f2 b4 dc 41 00 50 d0 e7 97 d0 ae b8 f9 ba 80 18 ...A.P.. ........
0030 ff ff da 1f 00 00 01 01 08 0a 34 03 84 d8 b7 cc ........ ..4.....
0040 3f 04 47 45 54 20 2f 20 48 54 54 50 2f 31 2e 31 ?.GET / HTTP/1.1
0050 0d 0a 48 6f 73 74 3a 20 6d 79 64 6f 6d 61 69 6e ..Host: mydomain
0060 2e 63 6f 6d 0d 0a 55 73 65 72 2d 41 67 65 6e 74 .com..Us er-Agent

The rule that you have provided will never fire with the example packet that you have provided. You have used a content:"POST"; with a http_method modifier but you are attempting to match a packet that is a GET request.

I think that the right content modifier should be http_uri, not http_header. Unless you are trying to capture the Host POST parameter.

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