# UpdateSignalingChannel
<a name="API_UpdateSignalingChannel"></a>

Updates the existing signaling channel. This is an asynchronous operation and takes time to complete. 

If the `MessageTtlSeconds` value is updated (either increased or reduced), it only applies to new messages sent via this channel after it's been updated. Existing messages are still expired as per the previous `MessageTtlSeconds` value.

## Request Syntax
<a name="API_UpdateSignalingChannel_RequestSyntax"></a>

```
POST /updateSignalingChannel HTTP/1.1
Content-type: application/json

{
   "ChannelARN": "string",
   "CurrentVersion": "string",
   "SingleMasterConfiguration": { 
      "MessageTtlSeconds": number
   }
}
```

## URI Request Parameters
<a name="API_UpdateSignalingChannel_RequestParameters"></a>

The request does not use any URI parameters.

## Request Body
<a name="API_UpdateSignalingChannel_RequestBody"></a>

The request accepts the following data in JSON format.

 ** [ChannelARN](#API_UpdateSignalingChannel_RequestSyntax) **   <a name="KinesisVideo-UpdateSignalingChannel-request-ChannelARN"></a>
The Amazon Resource Name (ARN) of the signaling channel that you want to update.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 1024.  
Pattern: `arn:[a-z\d-]+:kinesisvideo:[a-z0-9-]+:[0-9]+:[a-z]+/[a-zA-Z0-9_.-]+/[0-9]+`   
Required: Yes

 ** [CurrentVersion](#API_UpdateSignalingChannel_RequestSyntax) **   <a name="KinesisVideo-UpdateSignalingChannel-request-CurrentVersion"></a>
The current version of the signaling channel that you want to update.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 64.  
Pattern: `[a-zA-Z0-9]+`   
Required: Yes

 ** [SingleMasterConfiguration](#API_UpdateSignalingChannel_RequestSyntax) **   <a name="KinesisVideo-UpdateSignalingChannel-request-SingleMasterConfiguration"></a>
The structure containing the configuration for the `SINGLE_MASTER` type of the signaling channel that you want to update. This parameter and the channel message's time-to-live are required for channels with the `SINGLE_MASTER` channel type.  
Type: [SingleMasterConfiguration](API_SingleMasterConfiguration.md) object  
Required: No

## Response Syntax
<a name="API_UpdateSignalingChannel_ResponseSyntax"></a>

```
HTTP/1.1 200
```

## Response Elements
<a name="API_UpdateSignalingChannel_ResponseElements"></a>

If the action is successful, the service sends back an HTTP 200 response with an empty HTTP body.

## Errors
<a name="API_UpdateSignalingChannel_Errors"></a>

For information about the errors that are common to all actions, see [Common Error Types](CommonErrors.md).

 ** AccessDeniedException **   
You do not have required permissions to perform this operation.  
HTTP Status Code: 401

 ** ClientLimitExceededException **   
Kinesis Video Streams has throttled the request because you have exceeded the limit of allowed client calls. Try making the call later.  
HTTP Status Code: 400

 ** InvalidArgumentException **   
The value for this input parameter is invalid.  
HTTP Status Code: 400

 ** ResourceInUseException **   
When the input `StreamARN` or `ChannelARN` in `CLOUD_STORAGE_MODE` is already mapped to a different Kinesis Video Stream resource, or if the provided input `StreamARN` or `ChannelARN` is not in Active status, try one of the following :   

1. The `DescribeMediaStorageConfiguration` API to determine what the stream given channel is mapped to. 

1. The `DescribeMappedResourceConfiguration` API to determine the channel that the given stream is mapped to. 

1. The `DescribeStream` or `DescribeSignalingChannel` API to determine the status of the resource. 
HTTP Status Code: 400

 ** ResourceNotFoundException **   
Amazon Kinesis Video Streams can't find the stream that you specified.  
HTTP Status Code: 404

 ** VersionMismatchException **   
The stream version that you specified is not the latest version. To get the latest version, use the [DescribeStream](https://docs.aws.amazon.com/kinesisvideostreams/latest/dg/API_DescribeStream.html) API.  
HTTP Status Code: 400

## See Also
<a name="API_UpdateSignalingChannel_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS Command Line Interface V2](https://docs.aws.amazon.com/goto/cli2/kinesisvideo-2017-09-30/UpdateSignalingChannel) 
+  [AWS SDK for .NET V4](https://docs.aws.amazon.com/goto/DotNetSDKV4/kinesisvideo-2017-09-30/UpdateSignalingChannel) 
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/kinesisvideo-2017-09-30/UpdateSignalingChannel) 
+  [AWS SDK for Go v2](https://docs.aws.amazon.com/goto/SdkForGoV2/kinesisvideo-2017-09-30/UpdateSignalingChannel) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/kinesisvideo-2017-09-30/UpdateSignalingChannel) 
+  [AWS SDK for JavaScript V3](https://docs.aws.amazon.com/goto/SdkForJavaScriptV3/kinesisvideo-2017-09-30/UpdateSignalingChannel) 
+  [AWS SDK for Kotlin](https://docs.aws.amazon.com/goto/SdkForKotlin/kinesisvideo-2017-09-30/UpdateSignalingChannel) 
+  [AWS SDK for PHP V3](https://docs.aws.amazon.com/goto/SdkForPHPV3/kinesisvideo-2017-09-30/UpdateSignalingChannel) 
+  [AWS SDK for Python](https://docs.aws.amazon.com/goto/boto3/kinesisvideo-2017-09-30/UpdateSignalingChannel) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/kinesisvideo-2017-09-30/UpdateSignalingChannel)