Last updated: 2021-04-07 19:47:20

1. API Description

Domain name for API request:

This API is used to get the list of listeners by CLB instance ID, listener protocol, or port. If no filter is specified, all listeners under the CLB instance will be returned.

A maximum of 20 requests can be initiated per second for this API.

Note: This API supports Finance regions. If the common parameter Region is a Finance region, a domain name with the Finance region needs to be specified, for example:

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2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name Required Type Description
Action Yes String Common parameter. The value used for this API: DescribeListeners.
Version Yes String Common parameter. The value used for this API: 2018-03-17.
Region Yes String Common parameter. For more information, please see the list of regions supported by the product.
LoadBalancerId Yes String CLB instance ID
ListenerIds.N No Array of String Array of IDs of the CLB listeners to be queried
Protocol No String Type of the listener protocols to be queried. Valid values: TCP, UDP, HTTP, HTTPS, and TCP_SSL.
Port No Integer Port of the listeners to be queried

3. Output Parameters

Parameter Name Type Description
Listeners Array of Listener Listener list
TotalCount Integer Total number of listeners (with filters of port, protocol, and listener ID applied).
Note: This field may return null, indicating that no valid values can be obtained.
RequestId String The unique request ID, which is returned for each request. RequestId is required for locating a problem.

4. Example

Example1 Querying the information of all listeners in a CLB instance

Input Example
&<Common request parameters>

Output Example

  "Response": {
    "TotalCount": 3,
    "Listeners": [
        "ListenerId": "lbl-2ytsji1u",
        "ListenerName": "555",
        "CreateTime": "2020-12-31 11:36:18",
        "Protocol": "HTTP",
        "Port": 555,
        "EndPort": 0,
        "HealthCheck": null,
        "Certificate": null,
        "Scheduler": null,
        "SessionExpireTime": null,
        "SniSwitch": 0,
        "Rules": [
            "ListenerId": "lbl-2ytsji1u",
            "LocationId": "loc-nq5fuotq",
            "Domain": "",
            "Url": "/123",
            "CreateTime": "2020-12-31 11:36:48",
            "Certificate": null,
            "HealthCheck": {
              "HealthSwitch": 1,
              "TimeOut": 5,
              "IntervalTime": 5,
              "HealthNum": 3,
              "UnHealthNum": 3,
              "HttpCode": 15,
              "HttpCheckPath": "/",
              "HttpCheckDomain": "",
              "HttpCheckMethod": "get",
              "CheckPort": null,
              "CheckType": "TCP",
              "HttpVersion": null,
              "ContextType": null,
              "SendContext": null,
              "RecvContext": null
            "RewriteTarget": {
              "TargetListenerId": null,
              "TargetLocationId": null,
              "RewriteCode": null,
              "TakeUrl": null,
              "RewriteType": null
            "SessionExpireTime": 0,
            "Scheduler": "WRR",
            "HttpGzip": true,
            "BeAutoCreated": false,
            "DefaultServer": true,
            "Http2": false,
            "ForwardType": "HTTP",