Enables a listener for a Network Load Balancer (NLB) instance.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer. OpenAPI Explorer dynamically generates the sample code of the operation for different SDKs.

Request parameters

Parameter Type Required Example Description
Action String Yes StartListener

The operation that you want to perform. Set the value to StartListener.

ListenerId String No lsn-bp1bpn0kn908w4nbw****

The ID of the listener.

DryRun Boolean No false

Specifies whether only to precheck the request. Valid values:

  • true: prechecks the request but does not enable the listener. The system prechecks the required parameters, request syntax, and limits. If the request fails the precheck, an error message is returned. If the request passes the precheck, the DryRunOperation error code is returned.
  • false (default): sends the request. If the request passes the precheck, an HTTP 2xx status code is returned and the operation is performed.
ClientToken String No 123e4567-e89b-12d3-a456-426655440000

The client token that is used to ensure the idempotence of the request.

You can use the client to generate the value, but you must ensure that it is unique among all requests. ClientToken can contain only ASCII characters.

Note If you do not set this parameter, ClientToken is set to the value of RequestId. The value of RequestId for each API request may be different.
RegionId String No cn-hangzhou

The ID of the region where the NLB instance is deployed.

You can call the DescribeRegions operation to query the most recent region list.

Response parameters

Parameter Type Example Description
RequestId String CEF72CEB-54B6-4AE8-B225-F876FF7BA984

The ID of the request.

JobId String 72dcd26b-f12d-4c27-b3af-18f6aed5****

The ID of the asynchronous task.

Examples

Sample requests

http(s)://[Endpoint]/?Action=StartListener
&ListenerId=lsn-bp1bpn0kn908w4nbw****
&DryRun=false
&ClientToken=123e4567-e89b-12d3-a456-426655440000
&RegionId=cn-hangzhou
&<Common request parameters>

Sample success responses

XML format 

HTTP/1.1 200 OK
Content-Type:application/xml

<StartListenerResponse>
    <RequestId>CEF72CEB-54B6-4AE8-B225-F876FF7BA984</RequestId>
    <JobId>72dcd26b-f12d-4c27-b3af-18f6aed5****</JobId>
</StartListenerResponse>

JSON format 

HTTP/1.1 200 OK
Content-Type:application/json

{
  "RequestId" : "CEF72CEB-54B6-4AE8-B225-F876FF7BA984",
  "JobId" : "72dcd26b-f12d-4c27-b3af-18f6aed5****"
}

Error codes

For a list of error codes, visit the API Error Center.