@zkp2p/reclaim-witness-sdk
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<div> <div> <img src="https://raw.githubusercontent.com/reclaimprotocol/.github/main/assets/banners/Attestor-Core.png" /> </div> </div>
92 lines • 8.4 kB
JavaScript
;
var __importDefault = (this && this.__importDefault) || function (mod) {
return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.createServer = createServer;
const http_1 = require("http");
const serve_static_1 = __importDefault(require("serve-static"));
const config_1 = require("../config");
const socket_1 = require("../server/socket");
const generics_1 = require("../server/utils/generics");
const keep_alive_1 = require("../server/utils/keep-alive");
const utils_1 = require("../utils");
const bgp_listener_1 = require("../utils/bgp-listener");
const env_1 = require("../utils/env");
const signatures_1 = require("../utils/signatures");
const ws_1 = require("../utils/ws");
const ws_2 = require("ws");
const PORT = +((0, env_1.getEnvVariable)('PORT') || config_1.API_SERVER_PORT);
const DISABLE_BGP_CHECKS = (0, env_1.getEnvVariable)('DISABLE_BGP_CHECKS') === '1';
/**
* Creates the WebSocket API server,
* creates a fileserver to serve the browser RPC client,
* and listens on the given port.
*/
async function createServer(port = PORT) {
const http = (0, http_1.createServer)();
const serveBrowserRpc = (0, serve_static_1.default)('browser', { index: ['index.html'] });
const bgpListener = !DISABLE_BGP_CHECKS
? (0, bgp_listener_1.createBgpListener)(utils_1.logger.child({ service: 'bgp-listener' }))
: undefined;
const wss = new ws_2.WebSocketServer({ noServer: true });
http.on('upgrade', handleUpgrade.bind(wss));
http.on('request', (req, res) => {
var _a;
// simple way to serve files at the browser RPC path
if (!((_a = req.url) === null || _a === void 0 ? void 0 : _a.startsWith(config_1.BROWSER_RPC_PATHNAME))) {
res.statusCode = 404;
res.end('Not found');
return;
}
req.url = req.url.slice(config_1.BROWSER_RPC_PATHNAME.length) || '/';
serveBrowserRpc(req, res, (err) => {
var _a, _b;
if (err) {
utils_1.logger.error({ err, url: req.url }, 'Failed to serve file');
}
res.statusCode = (_a = err === null || err === void 0 ? void 0 : err.statusCode) !== null && _a !== void 0 ? _a : 404;
res.end((_b = err === null || err === void 0 ? void 0 : err.message) !== null && _b !== void 0 ? _b : 'Not found');
});
});
// wait for us to start listening
http.listen(port);
await new Promise((resolve, reject) => {
http.once('listening', () => resolve());
http.once('error', reject);
});
wss.on('connection', (ws, req) => handleNewClient(ws, req, bgpListener));
utils_1.logger.info({
port,
apiPath: config_1.WS_PATHNAME,
browserRpcPath: config_1.BROWSER_RPC_PATHNAME,
signerAddress: (0, generics_1.getAttestorAddress)(signatures_1.SelectedServiceSignatureType)
}, 'WS server listening');
const wssClose = wss.close.bind(wss);
wss.close = (cb) => {
wssClose(() => http.close(cb));
bgpListener === null || bgpListener === void 0 ? void 0 : bgpListener.close();
};
return wss;
}
async function handleNewClient(ws, req, bgpListener) {
(0, ws_1.promisifySend)(ws);
const client = await socket_1.AttestorServerSocket.acceptConnection(ws, { req, bgpListener, logger: utils_1.logger });
// if initialisation fails, don't store the client
if (!client) {
return;
}
ws.serverSocket = client;
(0, keep_alive_1.addKeepAlive)(ws, utils_1.logger.child({ sessionId: client.sessionId }));
}
function handleUpgrade(request, socket, head) {
const { pathname } = new URL(request.url, 'wss://base.url');
if (pathname === config_1.WS_PATHNAME) {
this.handleUpgrade(request, socket, head, (ws) => {
this.emit('connection', ws, request);
});
return;
}
socket.destroy();
}
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