Contents

Version: {{ version }}

Get Started

To get started with the SvanLINK application, follow these steps:

Linux

  1. Download the zip file containing the application.
  2. Unpack the zip file:
    3. unzip svanlink_os_osType.zip
  3. Navigate to the unpacked directory:
    4. cd svanlink
  4. Make the binaries executable:
    5. chmod +x svanlink
chmod +x restart
  5. Run the application:
    6. sudo ./svanlink

Windows

Run the installation file and follow the instructions.

The API requests by default are sent to local address on TCP port 8000.

In browser under the local address on port 80 (default http port) should be available UI of the app. For example: http://localhost

Mac OS

Run the installation file and follow the instructions.

The API requests by default are sent to local address on TCP port 8000.

In browser under the local address on port 3000 (default http port) should be available UI of the app. For example: http://localhost:3000

Authentication

Overview

SvanLINK API uses token-based authentication to secure access to all endpoints. Authentication is required for all API requests except for the initial login request.

Authentication Flow

  1. Login: Send a login request with your password to obtain an authentication token.
  2. Token Usage: Include the token in all subsequent API requests using the token parameter.
  3. Logout: Use the logout request to invalidate the token when you're done.

Token Lifecycle

Security Considerations

Error Handling

When authentication fails, the API will return an error response:

{
  "Request": "endpointName",
  "Status": "error",
  "StatusMessage": "Invalid token"
}

WebSocket Authentication

For WebSocket connections, authentication can be performed in two ways:

  1. Login Request: Send a login request as the first message after establishing the WebSocket connection.
  2. Token Only: Send just the token string (without wrapping it in a request object) if you already have a valid token.

Example Authentication Flow

// 1. Login to obtain token
{
  "Request": "login",
  "Params": {
    "password": "your_password"
  }
}

// 2. Use token in subsequent requests
{
  "Request": "getStatus",
  "token": "your_token_here"
}

// 3. Logout when done
{
  "Request": "logout",
  "token": "your_token_here"
 }

General Error Handling

Overview

All SvanLINK API endpoints follow a consistent error response format. Understanding these error patterns will help you handle errors gracefully in your applications.

Standard Error Response Format

When an error occurs, the API returns a JSON response with the following structure:

{
  "Request": "endpointName",
  "Status": "error",
  "StatusMessage": "Description of the error"
}

Error Response Fields

Common Error Types

General Error Example

For unhandled or unexpected errors, the API returns a generic error message:

{
  "Request": "endpointName",
  "Status": "error",
  "StatusMessage": "An unhandled error occurred during execution. Please try again!"
}

Error Handling Best Practices

HTTP Status Codes

In addition to the JSON error response, the API may also return appropriate HTTP status codes:

WebSocket Configuration

Description:

This configuration is used to set up WebSocket communication. The configuration specifies the intervals at which different types of data are sent automatically. The settings are saved, and on reconnection, SvanLINK will continue to send results according to the configured intervals. The maximum number of simultaneous connections is 20 clients.

The configuration must be sent via WebSocket connection. Default port is 8001

From version 1.1.0 was introduced such a concept as channels. Channel represents under a name a request (or set of requests) which will be preconfigured and sent automatically according to configured intervals. This allows to listen to different sets of requests by different clients.

Authentication:

When the WebSocket connection is opened, the first step is to authenticate. This can be done by sending a login request or by sending only the token (as a string) which was generated previously.

Request Format:

Request Body:

To configure the broadcast of data the SvanLINK will accept a list of "Requests". Each item in the list contains a desired type of request (the requests are described below in the documentation) and an interval (ms) at which the data must be sent.

{
  "Channel": "main",  //Optional, default is "main"
  "Requests": [
    {
      "Request": "getResults",
      "Interval": 1000 // Interval in milliseconds (ms). Minimum interval is 100ms.
    },
    {
      "Request": "getSpectrumResults",
      "Interval": 5000 // Interval in milliseconds (ms). Minimum interval is 100ms.
    }
  ]
}

Success Response:

The response indicates that the configuration has been successfully applied, and data will be sent automatically according to the configured intervals.

Response Format:

{
  "Channel": "main",
  "Status": "ok",
  "Response": {
    "message": "Configuration applied successfully"
  }
}

Channel Management Workflow:

  1. Use getChannelList to see all available channels
  2. Use subscribeChannel to subscribe to a channel
  3. Use deleteChannel to remove unwanted channels
  4. Recreate channels by sending WebSocket configuration messages

Securing the connection (optional)

Description:

To secure the connection between the client and the SvanLINK application, you can configure SSL certificates. This will enable encrypted communication, ensuring that data transmitted between the client and the server is secure.

Configuration Steps:

  1. Obtain SSL certificates:
    • You need two files: cert.pem (the certificate) and key.pem (the private key).
  2. Place the certificate and key files in the certificates folder within the SvanLINK application directory: 
    mv path/to/cert.pem certificates/
mv path/to/key.pem certificates/
  3. On startup, SvanLINK will automatically detect the presence of these files and switch on encryption for communication.

Verification:

Once the certificates are in place, restart the SvanLINK application. You should see a log message indicating that the WebSocket server is starting with SSL:

"Starting UI with SSL" or
"Starting TCP server with SSL" or
"Starting WebSocket server with SSL"

If the certificates are not found, the WebSocket server will start without SSL:

"Starting UI without SSL" or
"Starting TCP server without SSL" or
"Starting WebSocket server without SSL"

Code Examples


// JavaScript
async function makeRequest() {
  try {
    // Create the payload
    const payload = {
      Request: "getResults",
      Params: {
        results: ["LAeq", "LCeq"],
        devices: [123456, 654235],
        average: "true"
      },
      token: "userToken"
    };

    // Send the POST request
    const response = await fetch('http://localhost:8000/', {
      method: 'POST',
      headers: { 'Content-Type': 'application/json' },
      body: JSON.stringify(payload)
    });

    // Check if response is OK
    if (!response.ok) {
      throw new Error(`HTTP error! Status: ${response.status}`);
    }

    // Parse and print the JSON response
    const data = await response.json();
    console.log(JSON.stringify(data, null, 2));
  } catch (error) {
    console.error('Error:', error.message);
  }
}

// Execute the request
makeRequest();
  

# Python
import requests
import json

def make_request():
  try:
    # Create the payload
    payload = {
      "Request": "getResults",
      "Params": {
        "results": ["LAeq", "LCeq"],
        "devices": [123456, 654235],
        "average": "true"
      },
      "token": "userToken"
    }

    # Send the POST request
    url = "http://localhost:8000/"
    response = requests.post(url, json=payload)

    # Check if response is OK
    response.raise_for_status()

    # Parse and print the JSON response
    print(json.dumps(response.json(), indent=2))
  except requests.exceptions.RequestException as e:
    print(f"Error: {e}")

# Execute the request
make_request()
  

# cURL
curl -X POST http://localhost:8000/ \
  -H "Content-Type: application/json" \
  -d '{
    "Request": "getResults",
    "Params": {
      "results": ["LAeq", "LCeq"],
      "devices": [123456, 654235],
      "average": "true"
    },
    "token": "userToken"
  }'
  

//Java
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import com.google.gson.Gson;
import com.google.gson.JsonObject;
import com.google.gson.JsonArray;

public class HttpPostExample {
  public static void main(String[] args) {
    try {
      // Create the JSON payload
      JsonObject payload = new JsonObject();
      payload.addProperty("Request", "getResults");

      JsonObject params = new JsonObject();
      JsonArray results = new JsonArray();
      results.add("LAeq");
      results.add("LCeq");
      params.add("results", results);

      JsonArray devices = new JsonArray();
      devices.add(123456);
      devices.add(654235);
      params.add("devices", devices);

      params.addProperty("average", "true");
      payload.add("Params", params);
      payload.addProperty("token", "userToken");

      // Convert payload to string
      Gson gson = new Gson();
      String jsonPayload = gson.toJson(payload);

      // Create HTTP client
      HttpClient client = HttpClient.newHttpClient();

      // Build the HTTP request
      HttpRequest request = HttpRequest.newBuilder()
        .uri(URI.create("http://localhost:8000/"))
        .header("Content-Type", "application/json")
        .POST(HttpRequest.BodyPublishers.ofString(jsonPayload))
        .build();

      // Send the request and get the response
      HttpResponse response = client.send(request, HttpResponse.BodyHandlers.ofString());

      // Parse and print the JSON response
      JsonObject responseJson = gson.fromJson(response.body(), JsonObject.class);
      System.out.println(gson.toJson(responseJson));

    } catch (Exception e) {
      e.printStackTrace();
    }
  }
}
  

// Go
package main

import (
	"bytes"
	"encoding/json"
	"fmt"
	"net/http"
)

func main() {
	// Define the payload structure
	type Params struct {
		Results  []string `json:"results"`
		Devices  []int    `json:"devices"`
		Average  string   `json:"average"`
	}

	type Payload struct {
		Request string  `json:"Request"`
		Params  Params  `json:"Params"`
		Token   string  `json:"token"`
	}

	// Create the payload
	payload := Payload{
		Request: "getResults",
		Params: Params{
			Results:  []string{"LAeq", "LCeq"},
			Devices:  []int{123456, 654235},
			Average:  "true",
		},
		Token: "userToken",
	}

	// Marshal the payload to JSON
	jsonData, err := json.Marshal(payload)
	if err != nil {
		fmt.Println("Error marshaling JSON:", err)
		return
	}

	// Create the HTTP request
	url := "http://localhost:8000/"
	req, err := http.NewRequest("POST", url, bytes.NewBuffer(jsonData))
	if err != nil {
		fmt.Println("Error creating request:", err)
		return
	}
	req.Header.Set("Content-Type", "application/json")

	// Send the request
	client := &http.Client{}
	resp, err := client.Do(req)
	if err != nil {
		fmt.Println("Error sending request:", err)
		return
	}
	defer resp.Body.Close()

	// Read and parse the response
	var result map[string]interface{}
	if err := json.NewDecoder(resp.Body).Decode(&result); err != nil {
		fmt.Println("Error decoding response:", err)
		return
	}

	// Pretty print the JSON response
	resultJSON, err := json.MarshalIndent(result, "", "  ")
	if err != nil {
		fmt.Println("Error formatting response:", err)
		return
	}
	fmt.Println(string(resultJSON))
}

API Documentation - SvanLINK v{{ version }}

login

Description:

The login API is used to authenticate a user by providing a password. If the password is correct, the user is granted access to the system and receives a token.

Request Format:

Request Body:

{
  "Request": "login",
  "Params": {
    "password": "Svantek312"
  }
}

Success Response:

If the password is correct, the response will indicate a successful login and provide a token.

Response Format:

{
  "Request": "login",
  "Status": "ok",
  "Response": {
    "token": "userToken",
    "message": "Login successful"
  }
}

Error Response:

If the password is incorrect, the response will indicate an error.

Response Format:

{
  "Request": "login",
  "Status": "error",
  "StatusMessage": "Wrong password"
}

Note. It is highly recommended to change it to keep your data and settings safe. Use setNewPassword request to do this.

logout

Description:

The logout API is used to log out a user by invalidating the provided token. This will end the user's session.

Request Format:

Request Body:

{
  "Request": "logout",
  "token": "userToken"
}

Success Response:

If the token is valid, the response will indicate a successful logout.

Response Format:

{
  "Request": "logout",
  "Status": "ok",
  "Response": {
    "message": "Logout successful"
  }
}

Error Response:

If the token is invalid, the response will indicate an error.

Response Format:

{
  "Request": "logout",
  "Status": "error",
  "StatusMessage": "Invalid token"
}

setNewPassword

Description:

The setNewPassword API allows an authenticated user to change their password. The user must provide their current password and enter the new password twice for confirmation. The new password must be at least 8 characters long and contain at least one uppercase letter, one lowercase letter.

Request Format:

Request Body:

{
  "Request": "setNewPassword",
  "Params": {
    "oldPassword": "currentPassword",      // The current password.
    "newPassword": "newPassword",       // The new password.
    "newPassword2": "newPassword"       // Repeat of the new password for confirmation.
  },
  "token": "userToken"
}

Success Response:

If the password is changed successfully, the response will indicate success.

Response Format:

{
  "Request": "setNewPassword",
  "Status": "ok",
  "Response": {
    "message": "Password changed successfully"
  }
}

Error Responses:

If the request fails, an error response is returned.

Incorrect Password:

{
  "Request": "setNewPassword",
  "Status": "error",
  "StatusMessage": "Incorrect password"
}

Note. To reset the password to default it is needed to remove the password file with the same name.

On Linux systems it is located in the SvanLINK's folder.

On Windows it is located in C:\Users\YourUserName\AppData\Local\Svantek\SvanLINK\

licenseStatus

Description:

The licenseStatus API retrieves the current license status of the device. The response includes the status of the license, the license end date, the device ID, and a message regarding the license status.

Request Format:

Request Body:

{
  "Request": "licenseStatus",
  "token": "userToken"
}

Success Response:

The response contains the current license status of the device.

Response Format:

{
  "Request": "licenseStatus",
  "Status": "ok",
  "Response": {
    "licenseStatus": "active",
    "deviceId": "XXXXXXXXXXXXXXXX",
    "licenseMessage": "The license is active"
  }
}

setLicense

Description:

The setLicense API activates a new license key for the device. You can provide the license key encoded in a Base64 string, and the API will activate it for the device.

Important note. There are 2 types of licenses: hardware and device. "Hardware licence" attaches the app to the current hardware configuration (PC, laptop, server, Raspberry Pi etc) on which the app is running. The "device license" is attached to Svantek device. During it's activation the Svantek device must be connected to the hardware (PC, laptop, server, Raspberry Pi etc), otherwise an error will be returned.

Request Format:

Request Body:

{
  "Request": "setLicense",
  "Params": {
    "key": "License key file encoded in Base64" // License key encoded in Base64
  },
  "token": "userToken"
}

Success Response:

The response indicates whether the license key was successfully activated for the device.

Response Format:

{
  "Request": "setLicense",
  "Status": "ok",
  "Response": {
    "licenseStatus": "active",
    "deviceId": "1424422045401",
    "licenseMessage": "The license was activated successfully"
  }
}

getStatus

Description:

The getStatus API retrieves the status of specified devices. You can request specific device serial numbers, and the API will return the corresponding status data in the response.

Request Format:

Request Body:

{
  "Request": "getStatus",
  "Params": {
    "devices": [113200, 223200] // Optional: List of device serial numbers.
  },
  "token": "userToken"
}

Success Response:

The response contains the status data for each requested device.

Response Format:

{
  "Request": "getStatus",
  "Status": "ok",
  "Response": [
    {
      "serial": 113200,
      "type": "SV 303",
      "deviceName": "Demo_1",
      "firmware": "1.03.9",
      "battery": 90,
      "memorySize": 16874,
      "memoryFree": 30,
      "deviceWarning": [
        "Message 1 from device",
        "Message 2 from device"
      ],
      "measurementStatus": "start",
      "measurementType": "1/3 Octave",
      "intPeriod": 30
    },
    {
      "serial": 223200,
      "type": "SV 303",
      "deviceName": "Demo_2",
      "firmware": "1.03.7",
      "battery": 33,
      "memorySize": 65535,
      "memoryFree": 54,
      "deviceWarning": [
        "Message 1 from device",
        "Message 2 from device"
      ],
      "measurementStatus": "stop",
      "measurementType": "1/1 Octave",
      "intPeriod": 0
    }
  ]
}

Response Fields:

Device Object:

getResults

Description:

The getResults API retrieves measurement results for specified devices. You can request specific result types and device serial numbers, and the API will return the corresponding data in the response.

Request Format:

Request Body:

{
  "Request": "getResults",
  "Params": {
    "results": ["LAeq", "LCeq"],      // Optional: List of result types to fetch.
    "devices": [123456, 654235],      // Optional: List of device serial numbers.
    "average": "true",                // Required: Whether to return averaged results.
    "vibrationsDB": false             // Optional: Whether to show vibrations in dB instead of mm/s or m/s².
  },
  "token": "userToken"
}

Success Response:

The response contains the requested measurement data for each device.

Response Format:

{
  "Request": "getResults",
  "Status": "ok",
  "Response": [
    {
      "serial": 123456,
      "type": "SV 303",
      "result": [
        {
          "name": "LAeq",
          "value": 100.0,
          "unit": "dB"
        },
        {
          "name": "LCeq",
          "value": 112.1,
          "unit": "dB"
        }
      ]
    },
    {
      "serial": 654235,
      "type": "SV 303",
      "result": [
        {
          "name": "LAeq",
          "value": 98.2,
          "unit": "dB"
        },
        {
          "name": "LCeq",
          "value": 88.8,
          "unit": "dB"
        }
      ]
    }
  ]
}

Response Fields:

Device Object:

Error Responses:

Missing Parameters:

{
  "Request": "getResults",
  "Status": "error",
  "Error": "Missing required parameters"
}

Invalid Parameter Format:

{
  "Request": "getResults",
  "Status": "error",
  "Error": "Invalid parameter format"
}

Notes:

getSpectrumResults

Description:

The getSpectrumResults API retrieves spectrum results for specified devices. You can request specific spectrum types and device serial numbers, and the API will return the corresponding data in the response.

Request Format:

Request Body:

{
  "Request": "getSpectrumResults",
  "Params": {
    "devices": [123456, 654235],             // Optional: List of device serial numbers.
    "vibrationsDB": false                    // Optional: Whether to show vibrations in dB instead of mm/s or m/s².
  },
  "token": "userToken"
}

Success Response:

The response contains the requested spectrum data for each device.

Response Format:

{
  "Request": "getSpectrumResults",
  "Status": "ok",
  "Response": [
    {
      "serial": 123456,
      "type": "SV 303",
      "status": "ok",
      "measurement": "start",
      "resultLabel": "LZeq",
      "resultType": "1/1 Octave",
      "measurementMode": "sound",
      "results": [
        {name: "31.5", value: 59.55, unit: "dB"}
        {name: "63", value: 47.22, unit: "dB"}
        {name: "125", value: 41.01, unit: "dB"}
        {name: "250", value: 41.21, unit: "dB"}
        {name: "500", value: 38.36, unit: "dB"}
        {name: "1.0k", value: 38.69, unit: "dB"}
        {name: "2.0k", value: 40.36, unit: "dB"}
        {name: "4.0k", value: 35.02, unit: "dB"}
        {name: "8.0k", value: 30.13, unit: "dB"} 
        {name: "16k", value: 32.06, unit: "dB"} 
        {name: "A", value: 44.92, unit: "dB"}
        {name: "C", value: 61.96, unit: "dB"}
        {name: "Z", value: 72.56, unit: "dB"}
      ]
    },
    {
      "serial": 654235,
      "type": "SV 303",
      "status": "ok",
      "measurement": "start",
      "resultLabel": "LZeq",
      "resultType": "1/1 Octave",
      "measurementMode": "sound",
      "results": [
        {name: "31.5", value: 60.11, unit: "dB"}
        {name: "63", value: 44.22, unit: "dB"}
        {name: "125", value: 32.01, unit: "dB"}
        {name: "250", value: 41.23, unit: "dB"}
        {name: "500", value: 38.54, unit: "dB"}
        {name: "1.0k", value: 38.69, unit: "dB"}
        {name: "2.0k", value: 40.36, unit: "dB"}
        {name: "4.0k", value: 35.34, unit: "dB"}
        {name: "8.0k", value: 35.13, unit: "dB"} 
        {name: "16k", value: 32.23, unit: "dB"} 
        {name: "A", value: 44.92, unit: "dB"}
        {name: "C", value: 61.96, unit: "dB"}
        {name: "Z", value: 66.56, unit: "dB"}
      ]
    }
  ]
}

Response Fields:

Device Object:

Error Responses:

Missing Parameters:

{
  "Request": "getSpectrumResults",
  "Status": "error",
  "Error": "Missing required parameters"
}

Invalid Parameter Format:

{
  "Request": "getSpectrumResults",
  "Status": "error",
  "Error": "Invalid parameter format"
}

Notes:

startMeasurement

Description:

The startMeasurement API starts measurements for specified devices. You can request specific measurement types and device serial numbers, and the API will start the corresponding measurements.

Request Format:

Request Body:

{
  "Request": "startMeasurement",
  "Params": {
    "devices": [123456, 654235]           // Optional: List of device serial numbers.
  },
  "token": "userToken"
}

Success Response:

The response confirms that the requested measurements have been started for each device.

Response Format:

{
  "Request": "startMeasurement",
  "Status": "ok"
}

Response Fields:

Notes:

stopMeasurement

Description:

The stopMeasurement API stops measurements for specified devices. You can request specific measurement types and device serial numbers, and the API will stop the corresponding measurements.

Request Format:

Request Body:

{
  "Request": "stopMeasurement",
  "Params": {
    "devices": [123456, 654235]           // Optional: List of device serial numbers.
  },
  "token": "userToken"
}

Success Response:

The response confirms that the requested measurements have been stopped for each device.

Response Format:

{
  "Request": "stopMeasurement",
  "Status": "ok",
}

Response Fields:

Notes:

getConfig

Description:

The getConfig API retrieves the current configuration for specified devices. You can request specific configuration parameters and device serial numbers, and the API will return the corresponding configuration data in the response.

Request Format:

Request Body:

{
  "Request": "getConfig",
  "token": "userToken"
}

Success Response:

The response contains the requested configuration data for each device.

Response Format:

{
    "Request": "getConfig",
    "Status": "ok",
    "Response": {
        "app": {
            "tcpPort": 8000,
            "echo": true,
            "wsEnabled": false,
            "wsPort": 8001
        },
        "ui": {
            "liveView": {
                "resultTypes": "LAF;LAeq;LCpeak",
                "currentTab": "liveResultsTab"
            },
            "thresholdView": {
                "thresholdOrange": 45,
                "thresholdRed": 75,
                "k": 0,
                "resultType": "LAF"
            }
        }
    }
}

Response Fields:

Response Object:

setConfig

Description:

The setConfig API sets the configuration for specified devices. You can provide specific configuration parameters and device serial numbers, and the API will update the corresponding configuration data.

Request Format:

Request Body:

{
  "Request": "setConfig",
  "Params": {
    "app": {
      "tcpPort": 8000,
      "echo": true,
      "wsEnabled": false,
      "wsPort": 8001
    },
    "ui": {      // Optional: List of result types to fetch.
      "liveView": {
        "resultTypes": "LAF;LAeq;LCpeak",
        "currentTab": "liveResultsTab"
      },
      "thresholdView": {
        "thresholdOrange": 45,
        "thresholdRed": 75,
        "k": 0,
        "resultType": "LAF"
      }
    }
  },
  "token": "userToken"
}

Success Response:

The response confirms that the configuration has been set for each device.

Response Format:

{
  "Request": "setConfig",
  "Status": "ok"
}

Response Fields:

getSetup

Description:

The getSetup API retrieves the setup configuration for a specified device. You can request the setup configuration for a specific device serial number, and the API will return the corresponding setup data in the response.

Request Format:

Request Body:

{
  "Request": "getSetup",
  "Params": {
    "device": 85609 // Device serial number
  },
  "token": "userToken"
}

Success Response:

The response contains the setup configuration data for the requested device.

Response Format:

{
  "Request": "getSetup",
  "Status": "ok",
  "Response": {
    "setupfile": "file encoded in Base64 string format"
  }
}

setSetup

Description:

The setSetup API uploads a setup configuration to a specified device. You can provide the setup configuration file encoded in a Base64 string, and the API will upload it to the specified device.

Request Format:

Request Body:

{
  "Request": "setSetup",
  "Params": {
    "device": 85609, // Device serial number
    "overwrite": true, // Whether to overwrite the existing setup
    "file": "file encoded in Base64 string" // Setup configuration file encoded in Base64
  },
  "token": "userToken"
}

Success Response:

The response indicates whether the setup configuration was successfully uploaded to the device.

Response Format:

{
  "Request": "setSetup",
  "Status": "ok"
}

copySetup

Description:

The copySetup API copies a setup configuration from a source device to one or more target devices. You can specify the source device, target devices, and whether to overwrite the existing setup on the target devices.

Request Format:

Request Body:

{
  "Request": "copySetup",
  "Params": {
    "sourceDevice": 85609, // Source device serial number
    "targetDevices": [112233, 453789], // List of target device serial numbers
    "overwrite": true // Whether to overwrite the existing setup on the target devices
  },
  "token": "userToken"
}

Success Response:

The response indicates whether the setup configuration was successfully copied to the target devices.

Response Format:

{
  "Request": "copySetup",
  "Status": "ok"
}

sendRawCommand

Description:

The sendRawCommand API allows you to send # commands directly to the connected device. These commands must follow the format and syntax specified in the device's user manual. The API sends the command to the device and returns the response.

Request Format:

Request Body:

{
  "Request": "sendRawCommand",
  "Params": {
    "devices": [123456, 654235],      // Optional: List of device serial numbers.
    "command": "#1,U?,N?;"            // The raw command to send to the device
  },
  "token": "userToken"
}

Success Response:

The response contains the result of the command execution on the device.

Response Format:

{
  "Request": "sendRawCommand",
  "Status": "ok",
  "Response": [
    {
      "serial": 123456,
      "response": "#1,U303,N123456;"
    },
    {
      "serial": 654235,
      "response": "#1,U303,N654235;"
    }
  ]
}

Notes:

getFileList

Description:

The getFileList API retrieves a list of files stored on devices. All parameters in Params are optional and act as filters. If a parameter is omitted, no filtering is applied for that field.

Request Format:

Request Body:

{
  "Request": "getFileList",
  "Params": {
    "devices": [3502],                    // Optional: List of device serial numbers to filter.
    "mode": "flat",                       // Optional: "flat" for a flat list, "tree" for hierarchical (default: "flat").
    "types": ["TXT", "SVL"],              // Optional: List of file types/extensions to filter.
    "startDate": "2025-05-13 10:30:00",   // Optional: Start date/time (YYYY-MM-DD HH:mm:ss) to filter files created after this date.
    "endDate": "2025-5-13 11:00:00"       // Optional: End date/time (YYYY-MM-DD HH:mm:ss) to filter files created before this date.
  },
  "token": "userToken"
}

Success Response:

The response contains a list of files for each device matching the filters, including file name, size, creation date, and type.

Response Format:

{
  "Request": "getFileList",
  "Status": "ok",
  "Response": [
    {
      "serial": 123456,
      "type": "SV 303",
      "files": [
        {
          "name": "/S1.SVL",
          "size": 1203,
          "dateCreated": "2025-05-13 10:50:40",
          "type": "TXT"
        },
        {
          "name": "/W1.WAV",
          "size": 270336,
          "dateCreated": "2025-05-13 10:52:28",
          "type": "SVL"
        }
      ]
    }
  ],
}

Response Fields:

Notes:

downloadFile

Description:

The downloadFile API allows you to download a specific file from a device. The response is a stream of bytes representing the file content.

Request Format:

Request Body:

{
  "Request": "downloadFile",
  "Params": {
    "device": 123456,                  // Required: Device serial number.
    "mode": "byPath|current",          // Required: Mode for file download.
    "value": "/S1.SVL|SVL"     // Required: Depending on mode, either file path or file type.
  },
  "token": "userToken"
}

Response:

The response is a stream of bytes representing the requested file. The content type and headers are set for file download.

Notes:

downloadFiles

Description:

The downloadFiles API allows you to download multiple files from a device in a single request. The response is a stream of bytes, as a ZIP archive containing the requested files.

Request Format:

Request Body:

{
  "Request": "downloadFiles",
  "Params": {
    "device": 123456,                // Required: Device serial number or identifier.
    "files": [
      "path/file001.svl",
      "path/file002.wav"
    ],                               // Required: List of file paths to download.
    "omit": true                     // Optional: Whether to omit files that do not exist on the device.
  },
  "token": "userToken"
}

Response:

The response is a stream of bytes representing the requested files, typically as a ZIP archive.

Notes:

deleteFile

Description:

The deleteFile API allows you to delete a specific file from a device. The request must specify the device serial number and the full path to the file to be deleted.

Request Format:

Request Body:

{
  "Request": "deleteFile",
  "Params": {
    "device": 113200,  // Required: Device serial number.
    "path": "/L4.SVL"  // Required: Full file path to delete.
  },
  "token": "userToken"
}

Success Response:

The response indicates whether the file was successfully deleted from the device.

Response Format:

{
  "Request": "deleteFile",
  "Status": "ok",
  "Response": {
    "message": "File deleted successfully"
  }
}

Notes:

getVersion

Description:

The getVersion API retrieves the current version of the SvanLINK application. This is useful for checking which version of the software is running on the server.

Request Format:

Request Body:

{
  "Request": "getVersion",
  "token": "userToken"
}

Response:

The response contains the current version of the SvanLINK application.

Response Format:

{
  "Request": "getVersion",
  "Status": "ok",
  "Response": {
    "version": "{{ version }}"
  }
}

checkUpdate

Description:

The checkUpdate API checks if a new version of the SvanLINK application is available. It returns information about the latest version, its release date, and changelog.

Request Format:

Request Body:

{
  "Request": "checkUpdate",
  "token": "userToken"
}

Success Response:

The response indicates whether an update is available and provides details about the latest version.

Response Format:

{
  "Request": "checkUpdate",
  "Status": "ok",
  "Response": {
    "available": true,
    "critical": false,
    "version": "1.0.0",
    "date": "2025-05-01",
    "changelog": "- Added new features\n- Fixed bugs\n- Improved performance"
  }
}

Error Response:

{
  "Request": "checkUpdate",
  "Status": "error",
  "StatusMessage": "Unable to check for updates"
}

Notes:

downloadUpdate

Description:

The downloadUpdate API downloads the latest available update for the SvanLINK application. It initiates the download process or returns the current status if already in progress or completed.

Request Format:

Request Body:

{
  "Request": "downloadUpdate",
  "token": "userToken"
}

Success Response:

The response indicates the status of the update download process.

Response Format:

{
  "Request": "downloadUpdate",
  "Status": "ok",
  "Response": {
    "status": "downloading|downloaded"
  }
}

Error Response:

{
  "Request": "downloadUpdate",
  "Status": "error",
  "StatusMessage": "Unable to download update"
}

Notes:

installUpdate

Description:

The installUpdate API installs the latest downloaded update for the SvanLINK application. It starts the update process and may require elevated privileges depending on the operating system.

Request Format:

Request Body:

{
  "Request": "installUpdate",
  "token": "userToken"
}

Success Response:

The response indicates that the update process has started.

Response Format:

{
  "Request": "installUpdate",
  "Status": "ok",
  "Response": {
    "status": "updating"
  }
}

Error Response:

{
  "Request": "installUpdate",
  "Status": "error",
  "StatusMessage": "Error message"
}

Notes:

subscribeChannel

Description:

The subscribeChannel API allows a WebSocket client to subscribe to a specific channel for receiving real-time data. This request can only be sent via WebSocket connection and enables the client to receive periodic updates from the specified channel.

Note: This request is WebSocket-only and cannot be sent via HTTP/TCP connections.

Request Format:

Request Body:

{
  "Request": "subscribeChannel",
  "Params": {
    "channel": "main"
  }
}

Success Response:

If the subscription is successful, the response will indicate that the client has been subscribed to the specified channel.

Response Format:

{
  "Request": "subscribeChannel",
  "Status": "ok",
  "Response": {
    "message": "Subscribed to channel successfully"
  }
}

Error Responses:

No Channel Specified:

{
  "Request": "subscribeChannel",
  "Status": "error",
  "StatusMessage": "The "channel" parameter is missing"
}

Channel Doesn't Exist:

{
  "Request": "subscribeChannel",
  "Status": "error",
  "StatusMessage": "The channel doesn't exist. Subscribing to the 'main' channel."
}

Notes:

getChannelList

Description:

The getChannelList API retrieves a list of all available WebSocket channels and their configurations. This request can only be sent via WebSocket connection and returns information about all configured channels, including their associated requests and intervals.

Note: This request is WebSocket-only and cannot be sent via HTTP/TCP connections.

Request Format:

Request Body:

{
  "Request": "getChannelList"
}

Success Response:

The response contains all configured WebSocket channels and their associated request configurations.

Response Format:

{
  "Request": "getChannelList",
  "Status": "ok",
  "Response": {
    "main": {
      "Requests": [
        {
          "Request": "getResults",
          "Interval": 1000
        },
        {
          "Request": "getSpectrumResults",
          "Interval": 1000
        }
      ]
    },
    "API2": {
      "Requests": [
        {
          "Request": "getStatus",
          "Interval": 1000
        },
        {
          "Request": "getSpectrumResults",
          "Interval": 1650
        }
      ]
    }
  }
}

Response Fields:

Notes:

This configuration creates a new channel or updates an existing one with the specified requests and intervals.

deleteChannel

Description:

The deleteChannel API allows a WebSocket client to delete a specific channel and its associated configuration. This request can only be sent via WebSocket connection and permanently removes the channel from the system, including all its configured requests and intervals.

Note: This request is WebSocket-only and cannot be sent via HTTP/TCP connections.

Request Format:

Request Body:

{
  "Request": "deleteChannel",
  "Params": {
    "channel": "main"
  }
}

Success Response:

If the channel is successfully deleted, the response will indicate that the channel has been removed from the system.

Response Format:

{
  "Request": "deleteChannel",
  "Status": "ok",
  "Response": {
    "message": "Channel deleted successfully"
  }
}

Error Responses:

No Channel Specified:

{
  "Request": "deleteChannel",
  "Status": "error",
  "StatusMessage": "The "channel" parameter is missing"
}

Channel Doesn't Exist:

{
  "Request": "deleteChannel",
  "Status": "error",
  "StatusMessage": "Error, the channel doesn't exist!"
}

Notes: