@libp2p/multistream-select

@libp2p/multistream-select

JavaScript implementation of multistream-select

Table of contents

• Install
  • Browser <script> tag
• Background
  • What is multistream-select?
  • Select a protocol flow
• API Docs
• License
• Contribution

Install

$ 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.

<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

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/modules/_libp2p_multistream_select.html

License

Licensed under either of

• Apache 2.0, (LICENSE-APACHE / http://www.apache.org/licenses/LICENSE-2.0)
• 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.