Get busiest TCP connections for a node

NAS File Storage REST API Reference

Version

15.6.x

File Size

1291 KB

Audience

anonymous

Part Number

MK-92HNAS100-07

ft:lastEdition

2026-04-07

get /v9/storage/nodes/{nodeId}/connections/top

Retrieves the busiest TCP connections for a cluster node.

This API call does not work on all platforms and will return a maximum of 64 connections, showing the amount of data that has been transmitted/received in the last second. Unlike most other API calls, the response data is pre-sorted before it is returned.

Note: The objects returned by this API call may be pre-filtered based on the virtual server access granted by the API key used for authentication.

Authentication: x_subsystem_user Api Key "X-Subsystem-User"

Authentication: x_subsystem_password Api Key "X-Subsystem-Password"

Authentication: api_key Api Key "X-Api-Key"

Authentication: basicAuth HTTP - basic scheme

Path parameters

nodeId required

Either a node object ID or a cluster node ID

CLIENT REQUEST

          curl -X 'GET'

         -H "X-Subsystem-User: [[apiKey]]"
        
         \
      
         -H "X-Subsystem-Password: [[apiKey]]"
        
         \
      
         -H "X-Api-Key: [[apiKey]]"
        
         \
      
         -H "Authorization: Basic [[basicHash]]"
         \
      
        -H
        'Accept: application/json'
      
      'https://172.27.146.40:8444/v9/storage/nodes/{nodeId}/connections/top'

import http.client

conn = http.client.HTTPSConnection("172.27.146.40:8444")

headers = { 'Authorization': "Basic REPLACE_BASIC_AUTH" }

conn.request("GET", "/v9/storage/nodes/1/connections/top", headers=headers)

res = conn.getresponse()
data = res.read()

print(data.decode("utf-8"))

require 'uri'
require 'net/http'
require 'openssl'

url = URI("https://172.27.146.40:8444/v9/storage/nodes/1/connections/top")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
http.verify_mode = OpenSSL::SSL::VERIFY_NONE

request = Net::HTTP::Get.new(url)
request["Authorization"] = 'Basic REPLACE_BASIC_AUTH'

response = http.request(request)
puts response.read_body

const data = null;

const xhr = new XMLHttpRequest();
xhr.withCredentials = true;

xhr.addEventListener("readystatechange", function () {
  if (this.readyState === this.DONE) {
    console.log(this.responseText);
  }
});

xhr.open("GET", "https://172.27.146.40:8444/v9/storage/nodes/1/connections/top");
xhr.setRequestHeader("Authorization", "Basic REPLACE_BASIC_AUTH");

xhr.send(data);

HttpResponse<String> response = Unirest.get("https://172.27.146.40:8444/v9/storage/nodes/1/connections/top")
  .header("Authorization", "Basic REPLACE_BASIC_AUTH")
  .asString();

import Foundation

let headers = ["Authorization": "Basic REPLACE_BASIC_AUTH"]

let request = NSMutableURLRequest(url: NSURL(string: "https://172.27.146.40:8444/v9/storage/nodes/1/connections/top")! as URL,
                                        cachePolicy: .useProtocolCachePolicy,
                                    timeoutInterval: 10.0)
request.httpMethod = "GET"
request.allHTTPHeaderFields = headers

let session = URLSession.shared
let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (data, response, error) -> Void in
  if (error != nil) {
    print(error)
  } else {
    let httpResponse = response as? HTTPURLResponse
    print(httpResponse)
  }
})

dataTask.resume()

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_PORT => "8444",
  CURLOPT_URL => "https://172.27.146.40:8444/v9/storage/nodes/1/connections/top",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "Authorization: Basic REPLACE_BASIC_AUTH"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

CURL *hnd = curl_easy_init();

curl_easy_setopt(hnd, CURLOPT_CUSTOMREQUEST, "GET");
curl_easy_setopt(hnd, CURLOPT_URL, "https://172.27.146.40:8444/v9/storage/nodes/1/connections/top");

struct curl_slist *headers = NULL;
headers = curl_slist_append(headers, "Authorization: Basic REPLACE_BASIC_AUTH");
curl_easy_setopt(hnd, CURLOPT_HTTPHEADER, headers);

CURLcode ret = curl_easy_perform(hnd);

var client = new RestClient("https://172.27.146.40:8444/v9/storage/nodes/1/connections/top");
var request = new RestRequest(Method.GET);
request.AddHeader("Authorization", "Basic REPLACE_BASIC_AUTH");
IRestResponse response = client.Execute(request);

Responses

Successful operation

Body

application/json

tcpConnectionsarray

[

connectionIdintegerint32

Connection ID

Example:8220

localAddressstring

Local address of the connection

Example:"10.1.2.3"

localPortintegerint32

Local TCP port of the connection

nodeIdintegerint32

Cluster node ID

Example:1

remoteAddressstring

Remote address of the connection

Example:"10.2.3.4"

remotePortintegerint32

Remote TCP port of the connection

responsesintegerint32

Number of responses in the last second

rxDatainteger

Amount of data received in the last second

txDatainteger

Amount of data transmitted in the last second

virtualServerIdintegerint32

ID of the virtual server. 0 = management virtual server 255 = not assigned to virtual server

Example:1

]

RESPONSE
{
  "tcpConnections": [
    {
      "connectionId": 8220,
      "localAddress": "10.1.2.3",
      "localPort": 0,
      "nodeId": 1,
      "remoteAddress": "10.2.3.4",
      "remotePort": 0,
      "responses": 0,
      "rxData": 0,
      "txData": 0,
      "virtualServerId": 1
    }
  ]
}

Bad Request

Body

application/json

errorCodeintegerint32

Generic error code

Example:1081353

errorMsgstring

Main error message

Example:

"Invalid description parameter - the optional parameter must be between 2 and 30 characters long to be valid, if supplied"

RESPONSE
{
  "errorCode": 1081353,
  "errorMsg": "Invalid description parameter - the optional parameter must be between 2 and 30 characters long to be valid, if supplied"
}

Unauthorized - the request was rejected because the credentials or API key were either missing or invalid

Forbidden - the client does not have the required permissions to perform the operation

Body

application/json

errorMsgstring

Main error message

Example:"Forbidden request - the client does not have the required permissions to perform the operation"

RESPONSE
{
  "errorMsg": "Forbidden request - the client does not have the required permissions to perform the operation"
}

Not Found - a resource specified was not found

Body

application/json

errorCodeintegerint32

Generic error code

Example:1081345

errorDetailobject

Detailed error information

detailstring

More details on why the error occurred

faultstring

fileNamestring

Source file where the error occurred

Example:"RestApiFilesystems.cpp"

functionstring

Internal function name where the error occurred

Example:"mountFilesystem"

lineNumberintegerint32

Line number within the source file, where the error occurred

messagestring

Reason why the error(s) occurred

Example:"The file system is currently unassigned"

reasonstring

Reason why the error(s) occurred

Example:"The file system is currently unassigned"

returnedValueintegerint32

Not used

subCodeintegerint32

Specific failure error code

errorMsgstring

Main error message

Example:"Cannot find the object of the operation on the device"

RESPONSE
{
  "errorCode": 1081345,
  "errorDetail": {
    "detail": "",
    "fault": "",
    "fileName": "RestApiFilesystems.cpp",
    "function": "mountFilesystem",
    "lineNumber": 0,
    "message": "The file system is currently unassigned",
    "reason": "The file system is currently unassigned",
    "returnedValue": 0,
    "subCode": 0
  },
  "errorMsg": "Cannot find the object of the operation on the device"
}

Internal Server Error

Body

application/json

errorCodeintegerint32

Generic error code

errorDetailobject

Detailed error information

detailstring

More details on why the error occurred

faultstring

fileNamestring

Source file where the error occurred

Example:"RestApiFilesystems.cpp"

functionstring

Internal function name where the error occurred

Example:"mountFilesystem"

lineNumberintegerint32

Line number within the source file, where the error occurred

messagestring

Reason why the error(s) occurred

Example:"The file system is currently unassigned"

reasonstring

Reason why the error(s) occurred

Example:"The file system is currently unassigned"

returnedValueintegerint32

Not used

subCodeintegerint32

Specific failure error code

errorMsgstring

Main error message

Example:"Failed to mount file system"

RESPONSE
{
  "errorCode": 0,
  "errorDetail": {
    "detail": "",
    "fault": "",
    "fileName": "RestApiFilesystems.cpp",
    "function": "mountFilesystem",
    "lineNumber": 0,
    "message": "The file system is currently unassigned",
    "reason": "The file system is currently unassigned",
    "returnedValue": 0,
    "subCode": 0
  },
  "errorMsg": "Failed to mount file system"
}