---
title: Mobile App Development with CORs and Pub/Sub
description: The ability to build apps from your desktop or local server is a huge plus for developers using their own debug tools, test suites, etc. With our latest Version 1.0.4 release, we now support these use
image: https://blog.dreamfactory.com/hubfs/Imported_Blog_Media/team-jason.jpg
---

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 Products & Services

 Use Cases

 Industries

 Connectors

[Blog](https://blog.dreamfactory.com/)

[FREE 30 Minute Demo](https://www.dreamfactory.com/demo)

[AI Data Gateway](https://www.dreamfactory.com/ai-data-gateway/overview)

[Overview Why DreamFactory exists](https://www.dreamfactory.com/ai-data-gateway/overview) [Data Gov, Comp, Security Policy enforcement at the API layer](https://www.dreamfactory.com/ai-data-gateway/ai-data-governance) [Standard API Layer One contract for every backend](https://www.dreamfactory.com/ai-data-gateway/standard-api-layer) [API Gateway Functionality Routing, auth, rate limits, observability](https://www.dreamfactory.com/ai-data-gateway/api-gateway-functionality) [Deployment & Integration Self-hosted, cloud, hybrid](https://www.dreamfactory.com/ai-data-gateway/on-premise-deployment-and-integration) [Developer Productivity Auto-generated, never hand-coded](https://www.dreamfactory.com/ai-data-gateway/ai-development-accelerated) [AI App Architectures Patterns for RAG, agents, MCP](https://www.dreamfactory.com/ai-data-gateway/enterprise-ai-architectures)

AI Data Models

[AIOpenAI](https://www.dreamfactory.com/use-cases/openai) [GGoogle Gemini](https://www.dreamfactory.com/use-cases/google-gemini) [CAnthropic Claude](https://www.dreamfactory.com/use-cases/anthropic-claude-landing) [LMeta Llama](https://www.dreamfactory.com/use-cases/meta-llama) [MMistral AI](https://www.dreamfactory.com/use-cases/mistral) [CoCohere](https://www.dreamfactory.com/use-cases/cohere)

Services and support

[Quickstart Service Packages Expert-led Quickstarts to production](https://www.dreamfactory.com/services-and-support/quickstart-services-packages)

AI Data Models

[Generate & Manage REST APIs From any database, in seconds](https://www.dreamfactory.com/api-management/generate-rest-apis) [Features Security, scripting, self-hosted & more](https://www.dreamfactory.com/api-management/features) [API Generation The complete guide to auto-generated APIs](https://blog.dreamfactory.com/a-complete-guide-to-api-generation) [API Management Concepts, tools, and best practises](https://blog.dreamfactory.com/what-is-api-management-a-brief-overview-of-api-management-concepts-and-tools?_gl=1*jl0njh*_gcl_au*MjQzMjgwMTc3LjE3ODIzMjI3MzY)

AI Use Cases

[AI Data Access Secure, governed reads for your LLMs](https://www.dreamfactory.com/use-cases/ai-data-access) [MCP Server Drop-in Model Context Protocol](https://www.dreamfactory.com/use-cases/mcp-server) [Legacy Modernization Wrap mainframes with REST](https://www.dreamfactory.com/use-cases/legacy-modernization) [Data Governance Audit every call, enforce every policy](https://www.dreamfactory.com/use-cases/data-governance)

[Customer Case Studies](https://www.dreamfactory.com/case-studies)

[Energy Modernization](https://www.dreamfactory.com/case-studies/energy-snowflake-modernization) [Government Modernization](https://www.dreamfactory.com/case-studies/government-mainframe-oracle-modernization) [Government Business Intelligence](https://www.dreamfactory.com/case-studies/government-sql-server-bi-analyst-queries) [Manufacturing Modernization](https://www.dreamfactory.com/case-studies/steel-manufacturing-sap-erp-modernization) [Financial Services Investor Portal](https://www.dreamfactory.com/case-studies/financial-services-sql-server-investor-portal) [Non-Profit Partner Data Sharing](https://www.dreamfactory.com/case-studies/non-profit-sql-server-partner-data-sharing) [Professional Services Exec Dashboards](https://www.dreamfactory.com/case-studies/professional-services-erp-dashboards) [Education HR and External Data Sharing](https://www.dreamfactory.com/case-studies/education-student-hr-sql-server-mysql-external-data-sharing)

Industries

#### [Healthcare HIPAA-grade APIs across EHR, claims, and labs.](https://www.dreamfactory.com/use-cases/healthcare)

#### [Financial Services Portfolios, partners, and portals on one layer.](https://www.dreamfactory.com/use-cases/financial-services)

#### [Government Modernize mainframes without re-platforming.](https://www.dreamfactory.com/use-cases/government)

#### [Manufacturing SAP, MES, and shop-floor data, governed.](https://www.dreamfactory.com/use-cases/manufacturing)

SQL Database

[SQL SQL Server](https://www.dreamfactory.com/connectors/sql-server) [OR Oracle](https://www.dreamfactory.com/connectors/oracle) [PG PostgreSQL](https://www.dreamfactory.com/connectors/postgresql) [My MySQL](https://www.dreamfactory.com/connectors/mysql)

NoSQL & Docs

[Dy DynamoDB](https://www.dreamfactory.com/connectors/dynamodb) [Do DocumentDB](https://www.dreamfactory.com/connectors/azure-documentdb) [Mo MongoDB](https://www.dreamfactory.com/connectors/mongodb) [Cb CouchDB](https://www.dreamfactory.com/connectors/couch-db)

Cloud Warehouses

[S3 S3](https://www.dreamfactory.com/connectors/amazon-s3) [Ab Azureblob](https://www.dreamfactory.com/connectors/azure-blob) [FS FTP/SFTP](https://www.dreamfactory.com/connectors/ftp-sftp) [LS Local Storage](https://www.dreamfactory.com/connectors/local-storage)

C & SaaS

[Sf Salesforce](https://www.dreamfactory.com/connectors/salesforce) [API REST / SOAP](https://www.dreamfactory.com/connectors/soap-to-rest)

[See all 30+ connectors](https://www.dreamfactory.com/connectors)

[![back arrow](https://blog.dreamfactory.com/hubfs/raw_assets/public/dreamfactory/images/orange-arrow.svg) Blog](https://blog.dreamfactory.com/)

# Mobile App Development with CORs and Pub/Sub

 by Terence Bennett

![calendar icon](https://blog.dreamfactory.com/hubfs/raw_assets/public/dreamfactory/images/calendar-icon.svg) January 1, 2026

Table of contents

RECOMMENDED ARTICLES

- [A Complete Guide to API Generation](https://blog.dreamfactory.com/a-complete-guide-to-api-generation)
- [10 Best API Management Tools](https://blog.dreamfactory.com/what-is-api-management-a-brief-overview-of-api-management-concepts-and-tools)
- [Creating a Microsoft SQL Server API in Less Than 5 minutes with DreamFactory](https://blog.dreamfactory.com/creating-a-microsoft-sql-server-api-in-less-than-5-minutes-with-dreamfactory)
- [Hasura vs. DreamFactory: A Comprehensive Comparison](https://blog.dreamfactory.com/hasura-vs-dreamfactory)
- [Build A Snowflake REST API in Less Than 5 Minutes](https://blog.dreamfactory.com/generate-a-snowflake-rest-api-in-less-than-5-minutes)

![JasonSykes](https://blog.dreamfactory.com/hs-fs/hubfs/Imported_Blog_Media/team-jason.jpg?width=147&height=98&name=team-jason.jpg)The ability to build apps from your desktop or local server is a huge plus for developers using their own debug tools, test suites, etc. With our latest Version 1.0.4 release, we now support these use cases plus the ability to run apps from outside of your DSP and still enjoy the flexibility of our REST API.

Simply log in to your DSP and click on the System Config menu item on the left hand side. On the System Config screen you’ll see the CORS Access options. Setting \* will allow you to work from your desktop or anywhere. You may also use your localhost server, or another DSP or remote server you wish to have access to your data or service. Having the allowed verbs checkboxes enforces another layer of access control by locking down the entire DSP to use only the verbs checked for CORS. A future release will have CORS Access specifiable per application.

To use CORS without logging in, you’ll also have to allow for Guest Access, and create a Role for guest user access. This way you can limit any guest access to only database tables or services you see fit.

![system config](https://blog.dreamfactory.com/hubfs/Imported_Blog_Media/system-config.jpg)

If you’d like to pass authentication instead of having a guest role, consult our Swagger API docs [here](https://www.dreamfactory.com/developers/live_API) for the latest API call for logging in a user (see the /user/session POST request). That POST will return a session\_id that you can pass as a new header called X-DreamFactory-Session-Token with all your future API requests. You will also need to include the API name you created with your application as X-DreamFactory-Application-Name if you haven’t already.

We’ve also added live data through a new publication / subscription framework.

We’re using Faye running on Node. Check [here](https://faye.jcoglan.com/browser.html) for the Faye documentation as well some good advice on security.

Need to see it working? Here’s a [Plunker](https://plnkr.co/edit/UXZ1hmo0pHrOi1pxXAMS?p=preview) showing our Angular Todo Application using CORS and PubSub to talk to our demo server.

To see pub/sub working on it’s own, try this real time chat app on [Plunker](https://plnkr.co/edit/xtfzj6g35jPlHbam2yIJ?p=preview)

Enjoy! And as always, if you have any questions, please [contact us](https://www.dreamfactory.com/support/)!

TAGS: [MySQL,](https://blog.dreamfactory.com/tag/mysql) [API Management,](https://blog.dreamfactory.com/tag/api-management-2) [Services,](https://blog.dreamfactory.com/tag/services) [REST,](https://blog.dreamfactory.com/tag/rest) [DreamFactory,](https://blog.dreamfactory.com/tag/dreamfactory) [Data Sources,](https://blog.dreamfactory.com/tag/data-sources) [API Design,](https://blog.dreamfactory.com/tag/api-design) [SOAP,](https://blog.dreamfactory.com/tag/soap) [Database,](https://blog.dreamfactory.com/tag/database) [API](https://blog.dreamfactory.com/tag/api)

![Terence Bennett](https://blog.dreamfactory.com/hs-fs/hubfs/1624046620145.jpg?width=100&height=100&name=1624046620145.jpg)

Terence Bennett

Terence Bennett, CEO of DreamFactory, has a wealth of experience in government IT systems and Google Cloud. His impressive background includes being a former U.S. Navy Intelligence Officer and a former member of Google's Red Team. Prior to becoming CEO, he served as COO at DreamFactory Software.

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