AWS SDK Version 3 for .NET
API Reference

AWS services or capabilities described in AWS Documentation may vary by region/location. Click Getting Started with Amazon AWS to see specific differences applicable to the China (Beijing) Region.

Places a request for a new game session in a queue. When processing a placement request, Amazon GameLift searches for available resources on the queue's destinations, scanning each until it finds resources or the placement request times out.

A game session placement request can also request player sessions. When a new game session is successfully created, Amazon GameLift creates a player session for each player included in the request.

When placing a game session, by default Amazon GameLift tries each fleet in the order they are listed in the queue configuration. Ideally, a queue's destinations are listed in preference order.

Alternatively, when requesting a game session with players, you can also provide latency data for each player in relevant Regions. Latency data indicates the performance lag a player experiences when connected to a fleet in the Region. Amazon GameLift uses latency data to reorder the list of destinations to place the game session in a Region with minimal lag. If latency data is provided for multiple players, Amazon GameLift calculates each Region's average lag for all players and reorders to get the best game play across all players.

To place a new game session request, specify the following:

If successful, a new game session placement is created.

To track the status of a placement request, call DescribeGameSessionPlacement and check the request's status. If the status is FULFILLED, a new game session has been created and a game session ARN and Region are referenced. If the placement request times out, you can resubmit the request or retry it with a different queue.


For .NET Core this operation is only available in asynchronous form. Please refer to StartGameSessionPlacementAsync.

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


public abstract StartGameSessionPlacementResponse StartGameSessionPlacement(
         StartGameSessionPlacementRequest request
Type: Amazon.GameLift.Model.StartGameSessionPlacementRequest

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

Return Value
The response from the StartGameSessionPlacement service method, as returned by GameLift.


InternalServiceException The service encountered an unrecoverable internal failure while processing the request. Clients can retry such requests immediately or after a waiting period.
InvalidRequestException One or more parameter values in the request are invalid. Correct the invalid parameter values before retrying.
NotFoundException THe requested resources was not found. The resource was either not created yet or deleted.
UnauthorizedException The client failed authentication. Clients should not retry such requests.

Version Information

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

See Also