replace-inj-sentry-host.user.js

replace-inj-sentry-host.user.js

// ==UserScript==
// @name         Replace RPC and Rest injective sentry in Requests
// @version      1.0
// @description  Replaces the host for outgoing network requests (fetch & XHR)
// @match        https://market.injera.io/*
// @match        https://injera.io/*
// @grant        none
// ==/UserScript==

(function () {
  'use strict';

  var oldRPC = "sentry.tm.injective.network";
  var newRPC = "injective-rpc.publicnode.com";

  var oldRest = "sentry.lcd.injective.network";
  var newRest = "injective-rest.publicnode.com";

  var oldGrpc = "sentry.chain.grpc-web.injective.network";
  var newGrpc = "injective-grpc-web.publicnode.com";

  // --------------------------------------------
  // 1) Intercept fetch
  // --------------------------------------------
  const originalFetch = window.fetch;
  window.fetch = async function (input, init) {
    // 'input' can be a string (URL) or a Request object
    let url = (typeof input === 'string') ? input : input.url;

    // Build a URL object to manipulate easily
    const urlObj = new URL(url, location.origin);

    if (urlObj.host === oldRPC) {
      urlObj.host = newRPC;
    }

    if (urlObj.host === oldRest) {
      urlObj.host = newRest;
    }

    if (urlObj.host === oldGrpc) {
      urlObj.host = newGrpc;
    }

    // Call the original fetch with the updated URL
    return originalFetch.call(this, urlObj.toString(), init);
  };

  // --------------------------------------------
  // 2) Intercept XMLHttpRequest (XHR)
  // --------------------------------------------
  const origOpen = window.XMLHttpRequest.prototype.open;
  window.XMLHttpRequest.prototype.open = function (method, url, ...args) {
    // Create a URL object, relative to current page if needed
    const urlObj = new URL(url, location.origin);

    if (urlObj.host === oldRPC) {
      urlObj.host = newRPC;
    }

    if (urlObj.host === oldRest) {
      urlObj.host = newRest;
    }

    if (urlObj.host === oldGrpc) {
      urlObj.host = newGrpc;
    }

    // Call the original XHR .open() with our modified URL
    return origOpen.call(this, method, urlObj.toString(), ...args);
  };

})();