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CreateSession

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最后更新时间: 2025-10-30 21:30:28

1. API Description

Domain name for API request: car.intl.tencentcloudapi.com.

This API is used to create a session. The timeout period of the API is 5 seconds.

A maximum of 100 requests can be initiated per second for this API.

We recommend you to use API Explorer
Try it
API Explorer provides a range of capabilities, including online call, signature authentication, SDK code generation, and API quick search. It enables you to view the request, response, and auto-generated examples.

2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name Required Type Description
Action Yes String Common Params. The value used for this API: CreateSession.
Version Yes String Common Params. The value used for this API: 2022-01-10.
Region No String Common Params. This parameter is not required for this API.
UserId Yes String Unique user ID, which is customized by you and is not parsed by CAR. Based on your needs, you can either define unique IDs for users or use timestamps to generate random IDs. Make sure the same ID is used when a user reconnects to your application.
UserIp Yes String Public IP address of the user's client, which is used for nearby scheduling.
ClientSession No String Client-side session information, which is obtained from the SDK. If RunMode is RunWithoutClient, this parameter can be empty.
RunMode No String On-cloud running mode.RunWithoutClient: Keeps the application running on the cloud even when there are no client connections.Empty string (default): Keeps the application running on the cloud only when there are client connections.
ApplicationParameters No String Application startup parameters.This parameter is effective for multi-application projects.
This parameter is effective for single-application projects with prelaunch disabled.This parameter is ineffective for single-application projects with prelaunch enabled.
Note: When this parameter is effective, it will be appended to the startup parameters of application or project configuration in the console.
For example, for a single-application project with prelaunch disabled, if its startup parameter bar is 0 for project configuration in the console and the ApplicationParameters parameter foo is 1, the actual application startup parameters will be bar=0 and foo=1.
HostUserId No String [Multi-person Interaction] Homeowner's user ID, which is required in multi-person interaction mode.
If the user is the homeowner, HostUserID must be the same as UserID.
If the user is not the homeowner, HostUserID must be the homeowner's HostUserID.
Role No String [Multi-person Interaction] Role.
Player: a user who can operate the application via keyboard, mouse, etc.
Viewer: a user who can only watch the video in the room but cannot operate the application.

3. Output Parameters

Parameter Name Type Description
ServerSession String Server-side session information, which is returned to the SDK.
RequestId String The unique request ID, generated by the server, will be returned for every request (if the request fails to reach the server for other reasons, the request will not obtain a RequestId). RequestId is required for locating a problem.

4. Example

Example1 Creating a Session

This example shows you how to create a session.

Input Example

POST / HTTP/1.1
Host: car.intl.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: CreateSession
<Common request parameters>



{
    "UserIp": "125.127.178.228",
    "ClientSession": "eyJhYmMiOjEyM30=",
    "UserId": "cg_user"
}

Output Example

{
    "Response": {
        "ServerSession": "eyJ4dHoiOjc4OX0=",
        "RequestId": "fcf4146f-64d3-496c-88dc-d12f832de313"
    }
}

5. Developer Resources

SDK

TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

Command Line Interface

6. Error Code

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

Error Code Description
FailedOperation Operation failed.
FailedOperation.LockTimeout Concurrency quota not requested or request timed out.
FailedOperation.PathNotFound Failed to find the path.
FailedOperation.ProcessTimeout Processing timed out.
FailedOperation.SlowDown The request of the current UserId is being processed. Try again later.
InternalError Internal error.
InvalidParameter.JsonParseError JSON parsing error.
InvalidParameterValue Invalid parameter value.
LimitExceeded.Role [Multi-person Interaction] The number of persons corresponding to a role exceeds the limit.
OperationDenied Operation denied.
ResourceNotFound.NoIdle No available concurrency quota.
ResourceNotFound.SessionNotFound Unable to find the session.
ResourceUnavailable.Initialization It is being initialized.
UnsupportedOperation.Stopping The session is being terminated.

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