☰

Slither.io Server Picker

Pings available servers and lets you pick the one you want. This is a good plugin for playing with friends.

As of 12/01/2017. See the latest version.

// ==UserScript==
// @name         Slither.io Server Picker
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Pings available servers and lets you pick the one you want. This is a good plugin for playing with friends.
// @author       SystemDisc
// @match        http://slither.io/
// @grant        none
// @run-at       document-start
// @require      https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js
// ==/UserScript==

(function() {
	'use strict';

	let serverData = $.ajax({
		type: 'GET',
		url: 'http://slither.io/i33628.txt',
		async: false
	}).responseText;

	let servers = loadSos(serverData);

	$(function() {
		let css = `
			iframe[src="/social-box/"] {
				display: none;
			}
			#sidebar {
				padding: 15px;
				position: fixed;
				top: 0;
				left: 0;
				z-index: 10100;
				background-color: #000;
				height: 100vh;
				width: auto;
				overflow: auto;
			}
			#connectForm {
				margin-bottom: 15px;
			}
			#serverList > .server-listing {
				color: #fff;
				margin-bottom: 5px;
				cursor: pointer;
			}
			#serverList > .server-listing > .server-name, #serverList > .server-listing > .server-ping {
				display: inline-block;
			}
			#serverList > .server-listing > .server-ping {
				margin-left: 10px;
				color: green;
			}
			#serverList > .server-listing > .server-ping.bad {
				color: red;
			}
		`;
		let styleSheet = $('<style type="text/css">');
		styleSheet.html(css);

		let sidebar = $('<div id="sidebar">');

		let connectForm = $('<div id="connectForm">');
		let serverInput = $('<input class="server-input" type="test" name="serverHostname" placeholder="ip:port">');
		let serverConnect = $('<button class="connect-button" type="button">Connect</button>');
		connectForm.append(serverInput);
		connectForm.append(serverConnect);

		let serverList = $('<div id="serverList">');
		let promises = [];
		servers.forEach(function(server) {
			let serverElem = $('<div id="' + server.ip + '" class="server-listing">');
			let serverNameElem = $('<div class="server-name">');
			let serverPingElem = $('<div class="server-ping">');
			serverNameElem.text(server.ip + ':' + server.po);
			serverElem.append(serverNameElem);
			serverElem.append(serverPingElem);
			serverList.append(serverElem);
			let promise = pingServer(server.ip).then(function(ping) {
				let pingElem = $('[id="' + server.ip + '"]').find('.server-ping');
				pingElem.text(ping);
				if (ping > 75) {
					pingElem.addClass('bad');
				}
				let serverList = $('#serverList');
				let serverElems = serverList.children();
				serverElems.sort(function(a, b) {
					let an = +$(a).find('.server-ping').text();
					let bn = +$(b).find('.server-ping').text();
					if (an === 0) {
						an = 1000;
					}
					if (bn === 0) {
						bn = 1000;
					}
					return an > bn? 1:(an < bn? -1:0);
				});
				serverElems.detach().appendTo(serverList);
				$('.server-input').val(serverElems.first().find('.server-name').text());
			}).catch(function(err) {
				$('[id="' + server.ip + '"]').remove();
				return false;
			});
			promises.push(promise);
		});
		sidebar.append(connectForm);
		sidebar.append(serverList);
		$('body').append(sidebar);
		$('head').append(styleSheet);

		$(document).on('click', '#connectForm > .connect-button', function(e) {
			selectServer($('.server-input').val());
		});

		$(document).on('click', '#serverList > .server-listing', function(e) {
			selectServer($(e.currentTarget).find('.server-name').text());
		});

		$('.nsi').on('click', function(e) {
			$('#sidebar').hide();
		});
	});

	console.log(servers);
})();

function selectServer(servername) {
	let ip;
	let port;
	[ip, port] = servername.split(':');
	console.log(ip, +port);
	window.forceServer(ip, +port);
	let serverElem = $('[id="' + ip + '"]');
	serverElem.addClass('selected');
	serverElem.siblings().removeClass('selected');
	$('.server-input').val(servername);
}


function loadSos(chars) {
	/** @type {Array} */
	sos = [];
	/** @type {Array} */
	clus = [];
	chars.charAt(0);
	/** @type {number} */
	var i = 1;
	var d = {};
	/** @type {number} */
	var index = 0;
	/** @type {number} */
	d = index = 0;
	var c;
	/** @type {number} */
	var data = 0;
	/** @type {number} */
	var handle = 0;
	/** @type {Array} */
	var split = [];
	/** @type {Array} */
	var m = [];
	/** @type {Array} */
	var messages = [];
	/** @type {Array} */
	var received = [];
	for (;i < chars.length;) {
		if (c = (chars.charCodeAt(i++) - 97 - handle) % 26, 0 > c && (c += 26), data *= 16, data += c, handle += 7, 1 == d) {
			if (0 == index) {
				split.push(data);
				if (4 == split.length) {
					index++;
				}
			} else {
				if (1 == index) {
					m.push(data);
					if (3 == m.length) {
						index++;
					}
				} else {
					if (2 == index) {
						messages.push(data);
						if (3 == messages.length) {
							index++;
						}
					} else {
						if (3 == index && (received.push(data), 1 == received.length)) {
							d = {};
							/** @type {number} */
							index = c = 0;
							for (;index < m.length;index++) {
								c *= 256;
								c += m[index];
							}
							/** @type {number} */
							index = m = 0;
							for (;index < messages.length;index++) {
								m *= 256;
								m += messages[index];
							}
							/** @type {string} */
							d.ip = split.join(".");
							d.po = c;
							d.ac = m;
							d.wg = m + 5;
							d.clu = received[0];
							/** @type {Array} */
							sos.push(d);
							/** @type {Array} */
							split = [];
							/** @type {Array} */
							m = [];
							/** @type {Array} */
							messages = [];
							/** @type {Array} */
							received = [];
							/** @type {number} */
							index = 0;
						}
					}
				}
			}
			/** @type {number} */
			d = data = 0;
		} else {
			d++;
		}
	}
	return sos;
}

function pingServer(ip) {
	return new Promise(function(resolve, reject) {
		let handle = null;
		let ping = Date.now();
		try {
			handle = new WebSocket('ws://' + ip + ':80/ptc');
		}
		catch (e) {
			handle = null;
			reject(e);
		}
		if (handle) {
			handle.binaryType = "arraybuffer";
			handle.onerror = function(err) {
				reject(err);
			};
			handle.onmessage = function(data) {
				let pong = Date.now();
				if (testing) {
					console.log(ip, ping, pong, pong - ping, data);
				}
				resolve(pong - ping);
			};
			handle.onopen = function(body) {
				console.log(body);
				ping = Date.now();
				let data = new Uint8Array(1);
				data[0] = 112;
				this.send(data);
			};
		}
	});
}