77 lines
1.9 KiB
JavaScript
77 lines
1.9 KiB
JavaScript
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const Web3 = require('web3');
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const { utils: { asciiToHex, hexToAscii, sha3 } } = Web3;
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const POW_TIME = 1;
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const TTL = 10;
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const POW_TARGET = 0.002;
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const CHANNEL_NAME ="mytest"
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const CHANNEL = Web3.utils.sha3(CHANNEL_NAME).slice(0, 10);
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function createStatusPayload() {
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let tag = '~#c4';
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let content = 'Hello everyone, it\s status js';
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let messageType = '~:public-group-user-message';
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let clockValue = (new Date().getTime()) * 100;
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let contentType = 'text/plain';
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let timestamp = new Date().getTime();
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return asciiToHex(
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JSON.stringify([
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tag,
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[
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content,
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contentType,
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messageType,
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clockValue,
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timestamp,
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],
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]),
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);
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}
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(async () => {
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let web3 = new Web3();
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web3.setProvider(new Web3.providers.WebsocketProvider('ws://localhost:8546', {headers: {Origin: "statusjs"}}));
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await web3.shh.setMinPoW(POW_TARGET);
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let keys = {};
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// keys.symKeyID = await web3.shh.newSymKey();
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// keys.sig = await web3.shh.newKeyPair();
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keys.symKeyID = await web3.shh.generateSymKeyFromPassword(CHANNEL_NAME);
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keys.sig = await web3.shh.newKeyPair();
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console.dir("keys generated");
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console.dir(keys);
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subscription = web3.shh.subscribe("messages", {
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minPow: POW_TARGET,
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symKeyID: keys.symKeyID,
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topics: [CHANNEL]
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}).on('data', (data) => {
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console.dir("message received!");
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console.dir(data);
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console.dir(JSON.parse(hexToAscii(data.payload)));
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}).on('error', () => {
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console.dir("error receiving message");
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});
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web3.shh.post({
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symKeyID: keys.symKeyID, // encrypts using the sym key ID
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sig: keys.sig, // signs the message using the keyPair ID
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ttl: TTL,
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topic: CHANNEL,
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payload: createStatusPayload(),
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powTime: POW_TIME,
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powTarget: POW_TARGET
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}).then(() => {
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console.dir('message sent!');
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}).catch((e) => {
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console.dir("error sending message");
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console.dir(e);
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});
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})()
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