ic-websocket-js/lib/cjs/agent/transforms.js

IC WebSocket on the Internet Computer

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.makeWsNonceTransform = makeWsNonceTransform;
const agent_1 = require("@dfinity/agent");
/**
 * Create a Nonce transform, which takes a function that returns a Buffer, and adds it
 * as the nonce to every call requests.
 * @param nonceFn A function that returns a buffer. By default uses a semi-random method.
 */
function makeWsNonceTransform(nonceFn = agent_1.makeNonce) {
    return async (request) => {
        // Nonce only needs to be inserted into the body for async calls, to prevent replay attacks.
        if (request.endpoint === "call" /* Endpoint.Call */) {
            request.message.nonce = nonceFn();
        }
    };
}
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