2018-04-06 18:31:25 +10:00
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# DwebTransports
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2018-04-08 14:53:19 +10:00
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General transport library for Decentralized Web handles multiple underlying transports.
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## Background
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This library is part of a general project at the Internet Archive (archive.org)
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to support the decentralized web.
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###Goals
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* to allow a single API that can be used for most basic interactions with
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decentralized transports.
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* to support multiple URLs, on different transports, so that the (current) underlying unreliability
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is hidden.
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### Node Installation
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* Clone this repo.
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* Until this is in npm, add the line
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`"dweb-transports": "git+https://git@github.com/mitra42/dweb-transports.git",`
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to your package.json file in the dependencies section.
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* (TODO Note location above will change to an internetarchive repo)
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* `npm install dweb-transports` will install the dependencies including IPFS & WebTorrent
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`const DwebTransports = require(dweb-transport)` will add all Transports to a Javascript file.
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* TODO writeup how to require only some of the transports.
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* Then see usage API below
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### Installation and usage in the Browser
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* TODO installation of dev dependencies
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* Install npm & node
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* Clone this repo and cd to it.
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* `npm bundle` will create dist/dweb_transports_bundle.js
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* Add `<SCRIPT type="text/javascript" src="dweb_transports_bundle.js"></SCRIPT>` to your `<HEAD>`
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* TODO need to split out necessary from htmlutils so p_connect exposed
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Then code like this should work.
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```
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async function main() {
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try {
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// Connect to a set of transports, that the user can override
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// p_connect will look for "?transport=HTTP" etc to override defaults
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await p_connect({defaulttransport: ["HTTP", "IPFS"]});
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// Code you want to happen after connection goes here
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// Fetch some data from a service, specifiying two places to get it
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foo = await DwebTransports.p_fetch(["http://bar.com/foo.json", "ipfs:/ipfs/Q1abc"], verbose);
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} catch(err) {
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alert(err.message);
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}
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}
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var searchparams = new URL(window.location.href).searchParams;
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// Allow specifying ?verbose=true in URL to get debugging
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var verbose = searchparams.get("verbose") || false;
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```
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