# js-libp2p-multistream-select

**Repository Path**: mirrors_libp2p/js-libp2p-multistream-select

## Basic Information

- **Project Name**: js-libp2p-multistream-select
- **Description**: JavaScript implementation of multistream-select
- **Primary Language**: Unknown
- **License**: Apache-2.0
- **Default Branch**: master
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2022-06-16
- **Last Updated**: 2026-07-18

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# 📁 Archived - this module has been merged into [js-libp2p](https://github.com/libp2p/js-libp2p/tree/master/packages/multistream-select)

# @libp2p/multistream-select <!-- omit in toc -->

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> JavaScript implementation of multistream-select

## Table of contents <!-- omit in toc -->

- [Install](#install)
  - [Browser `<script>` tag](#browser-script-tag)
- [Background](#background)
  - [What is `multistream-select`?](#what-is-multistream-select)
  - [Select a protocol flow](#select-a-protocol-flow)
- [API Docs](#api-docs)
- [License](#license)
- [Contribution](#contribution)

## Install

```console
$ npm i @libp2p/multistream-select
```

### Browser `<script>` tag

Loading this module through a script tag will make it's exports available as `Libp2pMultistreamSelect` in the global namespace.

```html
<script src="https://unpkg.com/@libp2p/multistream-select/dist/index.min.js"></script>
```

## Background

### What is `multistream-select`?

TLDR; multistream-select is protocol multiplexing per connection/stream. [Full spec here](https://github.com/multiformats/multistream-select)

### Select a protocol flow

The caller will send "interactive" messages, expecting for some acknowledgement from the callee, which will "select" the handler for the desired and supported protocol:

    < /multistream-select/0.3.0  # i speak multistream-select/0.3.0
    > /multistream-select/0.3.0  # ok, let's speak multistream-select/0.3.0
    > /ipfs-dht/0.2.3            # i want to speak ipfs-dht/0.2.3
    < na                         # ipfs-dht/0.2.3 is not available
    > /ipfs-dht/0.1.9            # What about ipfs-dht/0.1.9 ?
    < /ipfs-dht/0.1.9            # ok let's speak ipfs-dht/0.1.9 -- in a sense acts as an ACK
    > <dht-message>
    > <dht-message>
    > <dht-message>

## API Docs

- <https://libp2p.github.io/js-libp2p-multistream-select>

## License

Licensed under either of

- Apache 2.0, ([LICENSE-APACHE](LICENSE-APACHE) / <http://www.apache.org/licenses/LICENSE-2.0>)
- MIT ([LICENSE-MIT](LICENSE-MIT) / <http://opensource.org/licenses/MIT>)

## Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.