Request Syntax Request Parameters Response Syntax Response Elements Errors Examples See Also

ClaimGameServer

This operation is used with the GameLift FleetIQ solution and game server groups.

Locates an available game server and temporarily reserves it to host gameplay and players. This operation is called from a game client or client service (such as a matchmaker) to request hosting resources for a new game session. In response, GameLift FleetIQ locates an available game server, places it in CLAIMED status for 60 seconds, and returns connection information that players can use to connect to the game server.

To claim a game server, identify a game server group. You can also specify a game server ID, although this approach bypasses GameLift FleetIQ placement optimization. Optionally, include game data to pass to the game server at the start of a game session, such as a game map or player information.

When a game server is successfully claimed, connection information is returned. A claimed game server's utilization status remains AVAILABLE while the claim status is set to CLAIMED for up to 60 seconds. This time period gives the game server time to update its status to UTILIZED (using UpdateGameServer) once players join. If the game server's status is not updated within 60 seconds, the game server reverts to unclaimed status and is available to be claimed by another request. The claim time period is a fixed value and is not configurable.

If you try to claim a specific game server, this request will fail in the following cases:

If the game server utilization status is UTILIZED.
If the game server claim status is CLAIMED.

Note

When claiming a specific game server, this request will succeed even if the game server is running on an instance in DRAINING status. To avoid this, first check the instance status by calling DescribeGameServerInstances.

Learn more

GameLift FleetIQ Guide

Request Syntax


{
   "GameServerData": "string",
   "GameServerGroupName": "string",
   "GameServerId": "string"
}

Request Parameters

For information about the parameters that are common to all actions, see Common Parameters.

The request accepts the following data in JSON format.

Note

In the following list, the required parameters are described first.

GameServerGroupName

A unique identifier for the game server group where the game server is running. Use either the GameServerGroup name or ARN value. If you are not specifying a game server to claim, this value identifies where you want GameLift FleetIQ to look for an available game server to claim.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 256.

Pattern: [a-zA-Z0-9-\.]+|^arn:.*:gameservergroup\/[a-zA-Z0-9-\.]+

Required: Yes

GameServerData

A set of custom game server properties, formatted as a single string value. This data is passed to a game client or service when it requests information on game servers using ListGameServers or ClaimGameServer.

Type: String

Length Constraints: Minimum length of 1. Maximum length of 1024.

Pattern: .*\S.*

Required: No

GameServerId

A custom string that uniquely identifies the game server to claim. If this parameter is left empty, GameLift FleetIQ searches for an available game server in the specified game server group.

Type: String

Length Constraints: Minimum length of 3. Maximum length of 128.

Pattern: [a-zA-Z0-9-\.]+

Required: No

Response Syntax


{
   "GameServer": { 
      "ClaimStatus": "string",
      "ConnectionInfo": "string",
      "GameServerData": "string",
      "GameServerGroupArn": "string",
      "GameServerGroupName": "string",
      "GameServerId": "string",
      "InstanceId": "string",
      "LastClaimTime": number,
      "LastHealthCheckTime": number,
      "RegistrationTime": number,
      "UtilizationStatus": "string"
   }
}

Response Elements

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

The following data is returned in JSON format by the service.

GameServer

Object that describes the newly claimed game server.

Type: GameServer object

Errors

For information about the errors that are common to all actions, see Common Errors.

ConflictException

The requested operation would cause a conflict with the current state of a service resource associated with the request. Resolve the conflict before retrying this request.

HTTP Status Code: 400

InternalServiceException

The service encountered an unrecoverable internal failure while processing the request. Clients can retry such requests immediately or after a waiting period.

HTTP Status Code: 500

InvalidRequestException

One or more parameter values in the request are invalid. Correct the invalid parameter values before retrying.

HTTP Status Code: 400

NotFoundException

A service resource associated with the request could not be found. Clients should not retry such requests.

HTTP Status Code: 400

OutOfCapacityException

The specified game server group has no available game servers to fulfill a ClaimGameServer request. Clients can retry such requests immediately or after a waiting period.

HTTP Status Code: 400

UnauthorizedException

The client failed authentication. Clients should not retry such requests.

HTTP Status Code: 400

Examples

Reserve a game server for a new game session

This example reserves an available game server to host a new game session. Because the request does not specify a game server ID, GameLift selects an available game server with optimal placement.

HTTP requests are authenticated using an AWS Signature Version 4 signature in the Authorization header field.

Sample Request


{
   "GameServerGroupName": "MegaFrogServers_NA"
}

CLI command:

aws gamelift claim-game-server \
    --game-server-group-name MegaFrogServers_NA

Sample Response


{
   "GameServer": { 
      "ClaimStatus": "CLAIMED",
      "ConnectionInfo": "192.0.2.0.80",
      "GameServerData": "",
      "GameServerGroupArn": "arn:aws:gamelift:us-west-2::GameServerGroup/MegaFrogServers_NA",
      "GameServerGroupName": "MegaFrogServers_NA",
      "GameServerId": "mega-frog-game-12345678",
      "InstanceId": "i-1234567890abcdef0",
      "LastClaimTime": 1580218197.293,
      "LastHealthCheckTime": 1580218197.293,
      "RegistrationTime": 1580218197.293,
      "UtilizationStatus": "AVAILABLE"
   }
}