> ## Documentation Index > Fetch the complete documentation index at: https://developers.liara.ir/llms.txt > Use this file to discover all available pages before exploring further. # Change the app's port > Redeploys the app's latest successful release with a new port. If the app has no successful release, nothing changes. Team permission: `operate` or `manage`. Errors from this endpoint use the body `{"message": "..."}` instead of the standard error body. ## OpenAPI ````yaml /spec/paas.yaml post /v1/projects/update-port openapi: 3.0.1 info: title: Apps & Deployments version: 1.0.0 description: > Create apps, deploy them, change their plans and settings, and read their logs, metrics and events. ## Identifying an app Most endpoints identify an app by its **name** (`project_id`, for example `my-app`). Some use its **ID** instead (`projectID`, the 24-character `_id` returned when you create or list apps). Each endpoint says which one it expects. ## Deploying 1. Upload your source code as a `.tar.gz` or `.zip` archive with `POST /v2/projects/{project_id}/sources`. You get a `sourceID`. 2. Create a release with `POST /v2/projects/{project_id}/releases`, passing the `sourceID`. For `docker` apps you can pass a ready-made `image` instead. 3. Follow the build with `GET /v2/releases/{releaseID}/build-logs` and check the release `state` with `GET /v1/releases/{releaseID}` until it's `READY` (or `FAILED`, `CANCELED`, `TIMEDOUT` or `UNHEALTHY`). ## Interactive shell (WebSocket) Open a shell in a running app over WebSocket: ```text wss://api.liara.ir/v1/exec?token=&project_id=&cmd= ``` - `token`: your API token. - `project_id`: the app's name. - `cmd`: the command to run, for example `/bin/bash`. URL-encode it. - `teamID` (optional): the team that owns the app. You need the `operate` or `manage` permission on the app. Everything you send is passed to the command's input, and its output is sent back to you. If the app has never been deployed successfully, you get the message `Service does not exist yet. You should have at least one successful release.` and the connection closes. The handshake fails with `401` for a missing or invalid token, `400` if `project_id` or `cmd` is missing or `teamID` is invalid, `403` without access to the team or app, and `404` if the app doesn't exist. ## Team permissions With `teamID`, each endpoint needs one of the project permissions it lists (`view`, `deploy`, `operate` or `manage`). A permission from your role or a resource permission on that app both count. servers: - url: https://api.liara.ir security: - bearerAuth: [] tags: - name: Apps description: Create, list, inspect and delete apps. - name: Configuration description: Environment variables, port, DNS servers, plans and scaling. - name: Settings description: >- Read-only filesystem, default subdomain, zero-downtime deployment and fixed outbound IP. - name: Deployments description: Upload source code, create releases, follow builds and roll back. - name: Logs, Metrics & Events description: Runtime logs, resource usage and lifecycle events. - name: Networks description: Private networks that apps and databases are created in. paths: /v1/projects/update-port: post: tags: - Configuration summary: Change the app's port description: >- Redeploys the app's latest successful release with a new port. If the app has no successful release, nothing changes. Team permission: `operate` or `manage`. Errors from this endpoint use the body `{"message": "..."}` instead of the standard error body. operationId: updatePort parameters: - $ref: '#/components/parameters/TeamID' requestBody: required: true content: application/json: schema: type: object required: - project - port properties: project: type: string description: The app's name. port: type: integer minimum: 1 description: The port your app listens on. example: project: my-app port: 8080 responses: '200': description: >- The app has no successful release; nothing changed. The response body is empty. '201': description: The app is being redeployed with the new port. content: application/json: schema: type: object properties: message: type: string example: message: success '400': description: >- `project` or `port` is missing or invalid, or the app doesn't exist or is frozen. content: application/json: schema: $ref: '#/components/schemas/MessageError' example: message: port should be a number and is required. '401': $ref: '#/components/responses/Unauthorized' '403': $ref: '#/components/responses/TeamForbidden' components: parameters: TeamID: name: teamID in: query required: false description: >- Run the request in the context of a team you belong to, instead of your personal account. schema: $ref: '#/components/schemas/ObjectID' example: '000000000000000000000002' schemas: MessageError: type: object description: Error body used by a few endpoints instead of the standard one. properties: message: type: string ObjectID: type: string pattern: ^[0-9a-fA-F]{24}$ description: 24-character hexadecimal ID. AuthError: type: object description: Error body returned when the API token is rejected. properties: error: type: string Error: type: object description: Standard error body. properties: statusCode: type: integer error: type: string description: HTTP status text. message: type: string description: What went wrong. data: type: object nullable: true description: >- Extra details. When present, `code` is a stable, machine-readable error code. properties: code: type: string responses: Unauthorized: description: The API token is missing, invalid or expired. content: application/json: schema: $ref: '#/components/schemas/AuthError' example: error: Unauthorized. TeamForbidden: description: >- With `teamID`: you aren't a member of the team (`team_not_found`), or you don't have the required permission on this app (`no_permission`). content: application/json: schema: $ref: '#/components/schemas/Error' examples: teamNotFound: summary: Not a team member value: statusCode: 403 error: Forbidden message: Team not found data: code: team_not_found noPermission: summary: Missing permission value: statusCode: 403 error: Forbidden message: You do not have permission to access this resource. data: code: no_permission securitySchemes: bearerAuth: type: http scheme: bearer description: 'Send your API token as `Authorization: Bearer `.' ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.