Sphinx WebAssembly example

index.js

import * as wasm from "nym-sphinx-wasm";

async function main() {
    var gatewayUrl = "wss://path.to.gateway:1793";
    var directoryUrl = "https://directory.nymtech.net/api/presence/topology";

    // Get the topology, then the mixnode and provider data
    const topology = await getTopology(directoryUrl);

    // Set up a websocket connection to the gateway node
    var connection = await connectWebsocket(gatewayUrl).then(function (c) {
        return c
    }).catch(function (err) {
        console.log("Websocket ERROR: " + err);
    })

    // Set up the send button
    const sendButton = document.querySelector('#send-button');
    sendButton.onclick = function () {
        sendMessageToMixnet(connection, topology);
    }
}

// Create a Sphinx packet and send it to the mixnet through the Gateway node. 
function sendMessageToMixnet(connection, topology) {
    var recipient = document.getElementById("recipient").value;
    var sendText = document.getElementById("sendtext").value;
    let packet = wasm.create_sphinx_packet(JSON.stringify(topology), sendText, recipient);
    connection.send(packet);
    displaySend(packet);
    display("Sent a Sphinx packet containing message: " + sendText);
}

async function getTopology(directoryUrl) {
    let response = await http('get', directoryUrl);
    let topology = JSON.parse(response);
    return topology;
}

// Let's get started!
main();

// http and websocket connection code below here, omitted for example