AWS SDK Version 3 for .NET
API Reference

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Used by workers to get an ActivityTask from the specified activity taskList. This initiates a long poll, where the service holds the HTTP connection open and responds as soon as a task becomes available. The maximum time the service holds on to the request before responding is 60 seconds. If no task is available within 60 seconds, the poll returns an empty result. An empty result, in this context, means that an ActivityTask is returned, but that the value of taskToken is an empty string. If a task is returned, the worker should use its type to identify and process it correctly.

Workers should set their client side socket timeout to at least 70 seconds (10 seconds higher than the maximum time service may hold the poll request).

Access Control

You can use IAM policies to control this action's access to Amazon SWF resources as follows:

If the caller doesn't have sufficient permissions to invoke the action, or the parameter values fall outside the specified constraints, the action fails. The associated event attribute's cause parameter is set to OPERATION_NOT_PERMITTED. For details and example IAM policies, see Using IAM to Manage Access to Amazon SWF Workflows in the Amazon SWF Developer Guide.

Note:

For PCL this operation is only available in asynchronous form. Please refer to PollForActivityTaskAsync.

Namespace: Amazon.SimpleWorkflow
Assembly: AWSSDK.SimpleWorkflow.dll
Version: 3.x.y.z

Syntax

C#
public abstract PollForActivityTaskResponse PollForActivityTask(
         PollForActivityTaskRequest request
)
Parameters
request
Type: Amazon.SimpleWorkflow.Model.PollForActivityTaskRequest

Container for the necessary parameters to execute the PollForActivityTask service method.

Return Value
The response from the PollForActivityTask service method, as returned by SimpleWorkflow.

Exceptions

ExceptionCondition
LimitExceededException Returned by any operation if a system imposed limitation has been reached. To address this fault you should either clean up unused resources or increase the limit by contacting AWS.
OperationNotPermittedException Returned when the caller doesn't have sufficient permissions to invoke the action.
UnknownResourceException Returned when the named resource cannot be found with in the scope of this operation (region or domain). This could happen if the named resource was never created or is no longer available for this operation.

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms

See Also