> For the complete documentation index, see [llms.txt](https://rxjs.gitbook.io/rx-txjs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://rxjs.gitbook.io/rx-txjs/class/txqueuepoint.md).

# TxQueuePoint

* a class using message queue communication as part of C2C (component-2-component data transfering).
* it include a TxConntor type member implement all the details needed to connect, send and receive data from queue.

Defining a queue point is as follow:

```
// get a new queue-point under the name 'GITHUB::GIST::C2' and save on the registry
queuepoint = TxQueuePointRegistry.instance.queue('GITHUB::GIST::C2');    
```

queuepoint (as mountpoint) objects are kept in TxQueuePointRegistry by their identifier (a selector) which could be a string as well as Symbol.

* **C2C**

  * first define a driver (see C2C section).
  * then define a queuepoint as follow:

  ```
  queuepoint: TxQueuePoint = TxQueuePointRegistry.instance.queue('GITHUB::API::AUTH');
   
    constructor() {
    }
   
    async init() {
      await this.queuepoint.queue().connect('example-1.queuepoint', 'Q1Component.tasks');
      await this.queuepoint.queue().subscribe(
        async (data) => {
          console.log("[Q1Component:subscribe] got data = " + data);
          await this.queuepoint.queue().next('example-2.queuepoint', 'Q2Component.tasks', {from: 'example-1.queuepoint', data: 'data'});
        });
   
      return this;
    }   
    .
    .      
  ```