首页
友链
关于自己
统计
Search
1
便宜的nat机
243 阅读
2
去广告的国外听歌软件Spotify比国内的网易云音乐和QQ音乐要好很多,曲库很全而且免费。
68 阅读
3
我的xyz域名的购买
58 阅读
4
Typecho
33 阅读
5
Java基础复习
27 阅读
默认分类
登录
Search
标签搜索
C语言
Java入门学习
IDEA
Java
php
网络
nat
vps
复习
网页
html
小顾
累计撰写
20
篇文章
累计收到
16
条评论
首页
栏目
默认分类
页面
友链
关于自己
统计
搜索到
20
篇与
的结果
2024-06-26
Cloudflare Workers vless
// <!--GAMFC-->version base on commit 841ed4e9ff121dde0ed6a56ae800c2e6c4f66056, time is 2024-04-16 18:02:37 UTC<!--GAMFC-END-->. // @ts-ignore import { connect } from 'cloudflare:sockets'; // How to generate your own UUID: // [Windows] Press "Win + R", input cmd and run: Powershell -NoExit -Command "[guid]::NewGuid()" let userID = 'd342d11e-d424-4583-b36e-524ab1f0afa4'; let proxyIP = ''; if (!isValidUUID(userID)) { throw new Error('uuid is not valid'); } export default { /** * @param {import("@cloudflare/workers-types").Request} request * @param {{UUID: string, PROXYIP: string}} env * @param {import("@cloudflare/workers-types").ExecutionContext} ctx * @returns {Promise<Response>} */ async fetch(request, env, ctx) { try { userID = env.UUID || userID; proxyIP = env.PROXYIP || proxyIP; const upgradeHeader = request.headers.get('Upgrade'); if (!upgradeHeader || upgradeHeader !== 'websocket') { const url = new URL(request.url); switch (url.pathname) { case '/': return new Response(JSON.stringify(request.cf), { status: 200 }); case `/${userID}`: { const vlessConfig = getVLESSConfig(userID, request.headers.get('Host')); return new Response(`${vlessConfig}`, { status: 200, headers: { "Content-Type": "text/plain;charset=utf-8", } }); } default: return new Response('Not found', { status: 404 }); } } else { return await vlessOverWSHandler(request); } } catch (err) { /** @type {Error} */ let e = err; return new Response(e.toString()); } }, }; /** * * @param {import("@cloudflare/workers-types").Request} request */ async function vlessOverWSHandler(request) { /** @type {import("@cloudflare/workers-types").WebSocket[]} */ // @ts-ignore const webSocketPair = new WebSocketPair(); const [client, webSocket] = Object.values(webSocketPair); webSocket.accept(); let address = ''; let portWithRandomLog = ''; const log = (/** @type {string} */ info, /** @type {string | undefined} */ event) => { console.log(`[${address}:${portWithRandomLog}] ${info}`, event || ''); }; const earlyDataHeader = request.headers.get('sec-websocket-protocol') || ''; const readableWebSocketStream = makeReadableWebSocketStream(webSocket, earlyDataHeader, log); /** @type {{ value: import("@cloudflare/workers-types").Socket | null}}*/ let remoteSocketWapper = { value: null, }; let udpStreamWrite = null; let isDns = false; // ws --> remote readableWebSocketStream.pipeTo(new WritableStream({ async write(chunk, controller) { if (isDns && udpStreamWrite) { return udpStreamWrite(chunk); } if (remoteSocketWapper.value) { const writer = remoteSocketWapper.value.writable.getWriter() await writer.write(chunk); writer.releaseLock(); return; } const { hasError, message, portRemote = 443, addressRemote = '', rawDataIndex, vlessVersion = new Uint8Array([0, 0]), isUDP, } = processVlessHeader(chunk, userID); address = addressRemote; portWithRandomLog = `${portRemote}--${Math.random()} ${isUDP ? 'udp ' : 'tcp ' } `; if (hasError) { // controller.error(message); throw new Error(message); // cf seems has bug, controller.error will not end stream // webSocket.close(1000, message); return; } // if UDP but port not DNS port, close it if (isUDP) { if (portRemote === 53) { isDns = true; } else { // controller.error('UDP proxy only enable for DNS which is port 53'); throw new Error('UDP proxy only enable for DNS which is port 53'); // cf seems has bug, controller.error will not end stream return; } } // ["version", "附加信息长度 N"] const vlessResponseHeader = new Uint8Array([vlessVersion[0], 0]); const rawClientData = chunk.slice(rawDataIndex); // TODO: support udp here when cf runtime has udp support if (isDns) { const { write } = await handleUDPOutBound(webSocket, vlessResponseHeader, log); udpStreamWrite = write; udpStreamWrite(rawClientData); return; } handleTCPOutBound(remoteSocketWapper, addressRemote, portRemote, rawClientData, webSocket, vlessResponseHeader, log); }, close() { log(`readableWebSocketStream is close`); }, abort(reason) { log(`readableWebSocketStream is abort`, JSON.stringify(reason)); }, })).catch((err) => { log('readableWebSocketStream pipeTo error', err); }); return new Response(null, { status: 101, // @ts-ignore webSocket: client, }); } /** * Handles outbound TCP connections. * * @param {any} remoteSocket * @param {string} addressRemote The remote address to connect to. * @param {number} portRemote The remote port to connect to. * @param {Uint8Array} rawClientData The raw client data to write. * @param {import("@cloudflare/workers-types").WebSocket} webSocket The WebSocket to pass the remote socket to. * @param {Uint8Array} vlessResponseHeader The VLESS response header. * @param {function} log The logging function. * @returns {Promise<void>} The remote socket. */ async function handleTCPOutBound(remoteSocket, addressRemote, portRemote, rawClientData, webSocket, vlessResponseHeader, log,) { async function connectAndWrite(address, port) { /** @type {import("@cloudflare/workers-types").Socket} */ const tcpSocket = connect({ hostname: address, port: port, }); remoteSocket.value = tcpSocket; log(`connected to ${address}:${port}`); const writer = tcpSocket.writable.getWriter(); await writer.write(rawClientData); // first write, nomal is tls client hello writer.releaseLock(); return tcpSocket; } // if the cf connect tcp socket have no incoming data, we retry to redirect ip async function retry() { const tcpSocket = await connectAndWrite(proxyIP || addressRemote, portRemote) // no matter retry success or not, close websocket tcpSocket.closed.catch(error => { console.log('retry tcpSocket closed error', error); }).finally(() => { safeCloseWebSocket(webSocket); }) remoteSocketToWS(tcpSocket, webSocket, vlessResponseHeader, null, log); } const tcpSocket = await connectAndWrite(addressRemote, portRemote); // when remoteSocket is ready, pass to websocket // remote--> ws remoteSocketToWS(tcpSocket, webSocket, vlessResponseHeader, retry, log); } /** * * @param {import("@cloudflare/workers-types").WebSocket} webSocketServer * @param {string} earlyDataHeader for ws 0rtt * @param {(info: string)=> void} log for ws 0rtt */ function makeReadableWebSocketStream(webSocketServer, earlyDataHeader, log) { let readableStreamCancel = false; const stream = new ReadableStream({ start(controller) { webSocketServer.addEventListener('message', (event) => { if (readableStreamCancel) { return; } const message = event.data; controller.enqueue(message); }); // The event means that the client closed the client -> server stream. // However, the server -> client stream is still open until you call close() on the server side. // The WebSocket protocol says that a separate close message must be sent in each direction to fully close the socket. webSocketServer.addEventListener('close', () => { // client send close, need close server // if stream is cancel, skip controller.close safeCloseWebSocket(webSocketServer); if (readableStreamCancel) { return; } controller.close(); } ); webSocketServer.addEventListener('error', (err) => { log('webSocketServer has error'); controller.error(err); } ); // for ws 0rtt const { earlyData, error } = base64ToArrayBuffer(earlyDataHeader); if (error) { controller.error(error); } else if (earlyData) { controller.enqueue(earlyData); } }, pull(controller) { // if ws can stop read if stream is full, we can implement backpressure // https://streams.spec.whatwg.org/#example-rs-push-backpressure }, cancel(reason) { // 1. pipe WritableStream has error, this cancel will called, so ws handle server close into here // 2. if readableStream is cancel, all controller.close/enqueue need skip, // 3. but from testing controller.error still work even if readableStream is cancel if (readableStreamCancel) { return; } log(`ReadableStream was canceled, due to ${reason}`) readableStreamCancel = true; safeCloseWebSocket(webSocketServer); } }); return stream; } // https://xtls.github.io/development/protocols/vless.html // https://github.com/zizifn/excalidraw-backup/blob/main/v2ray-protocol.excalidraw /** * * @param { ArrayBuffer} vlessBuffer * @param {string} userID * @returns */ function processVlessHeader( vlessBuffer, userID ) { if (vlessBuffer.byteLength < 24) { return { hasError: true, message: 'invalid data', }; } const version = new Uint8Array(vlessBuffer.slice(0, 1)); let isValidUser = false; let isUDP = false; if (stringify(new Uint8Array(vlessBuffer.slice(1, 17))) === userID) { isValidUser = true; } if (!isValidUser) { return { hasError: true, message: 'invalid user', }; } const optLength = new Uint8Array(vlessBuffer.slice(17, 18))[0]; //skip opt for now const command = new Uint8Array( vlessBuffer.slice(18 + optLength, 18 + optLength + 1) )[0]; // 0x01 TCP // 0x02 UDP // 0x03 MUX if (command === 1) { } else if (command === 2) { isUDP = true; } else { return { hasError: true, message: `command ${command} is not support, command 01-tcp,02-udp,03-mux`, }; } const portIndex = 18 + optLength + 1; const portBuffer = vlessBuffer.slice(portIndex, portIndex + 2); // port is big-Endian in raw data etc 80 == 0x005d const portRemote = new DataView(portBuffer).getUint16(0); let addressIndex = portIndex + 2; const addressBuffer = new Uint8Array( vlessBuffer.slice(addressIndex, addressIndex + 1) ); // 1--> ipv4 addressLength =4 // 2--> domain name addressLength=addressBuffer[1] // 3--> ipv6 addressLength =16 const addressType = addressBuffer[0]; let addressLength = 0; let addressValueIndex = addressIndex + 1; let addressValue = ''; switch (addressType) { case 1: addressLength = 4; addressValue = new Uint8Array( vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength) ).join('.'); break; case 2: addressLength = new Uint8Array( vlessBuffer.slice(addressValueIndex, addressValueIndex + 1) )[0]; addressValueIndex += 1; addressValue = new TextDecoder().decode( vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength) ); break; case 3: addressLength = 16; const dataView = new DataView( vlessBuffer.slice(addressValueIndex, addressValueIndex + addressLength) ); // 2001:0db8:85a3:0000:0000:8a2e:0370:7334 const ipv6 = []; for (let i = 0; i < 8; i++) { ipv6.push(dataView.getUint16(i * 2).toString(16)); } addressValue = ipv6.join(':'); // seems no need add [] for ipv6 break; default: return { hasError: true, message: `invild addressType is ${addressType}`, }; } if (!addressValue) { return { hasError: true, message: `addressValue is empty, addressType is ${addressType}`, }; } return { hasError: false, addressRemote: addressValue, addressType, portRemote, rawDataIndex: addressValueIndex + addressLength, vlessVersion: version, isUDP, }; } /** * * @param {import("@cloudflare/workers-types").Socket} remoteSocket * @param {import("@cloudflare/workers-types").WebSocket} webSocket * @param {ArrayBuffer} vlessResponseHeader * @param {(() => Promise<void>) | null} retry * @param {*} log */ async function remoteSocketToWS(remoteSocket, webSocket, vlessResponseHeader, retry, log) { // remote--> ws let remoteChunkCount = 0; let chunks = []; /** @type {ArrayBuffer | null} */ let vlessHeader = vlessResponseHeader; let hasIncomingData = false; // check if remoteSocket has incoming data await remoteSocket.readable .pipeTo( new WritableStream({ start() { }, /** * * @param {Uint8Array} chunk * @param {*} controller */ async write(chunk, controller) { hasIncomingData = true; // remoteChunkCount++; if (webSocket.readyState !== WS_READY_STATE_OPEN) { controller.error( 'webSocket.readyState is not open, maybe close' ); } if (vlessHeader) { webSocket.send(await new Blob([vlessHeader, chunk]).arrayBuffer()); vlessHeader = null; } else { // seems no need rate limit this, CF seems fix this??.. // if (remoteChunkCount > 20000) { // // cf one package is 4096 byte(4kb), 4096 * 20000 = 80M // await delay(1); // } webSocket.send(chunk); } }, close() { log(`remoteConnection!.readable is close with hasIncomingData is ${hasIncomingData}`); // safeCloseWebSocket(webSocket); // no need server close websocket frist for some case will casue HTTP ERR_CONTENT_LENGTH_MISMATCH issue, client will send close event anyway. }, abort(reason) { console.error(`remoteConnection!.readable abort`, reason); }, }) ) .catch((error) => { console.error( `remoteSocketToWS has exception `, error.stack || error ); safeCloseWebSocket(webSocket); }); // seems is cf connect socket have error, // 1. Socket.closed will have error // 2. Socket.readable will be close without any data coming if (hasIncomingData === false && retry) { log(`retry`) retry(); } } /** * * @param {string} base64Str * @returns */ function base64ToArrayBuffer(base64Str) { if (!base64Str) { return { error: null }; } try { // go use modified Base64 for URL rfc4648 which js atob not support base64Str = base64Str.replace(/-/g, '+').replace(/_/g, '/'); const decode = atob(base64Str); const arryBuffer = Uint8Array.from(decode, (c) => c.charCodeAt(0)); return { earlyData: arryBuffer.buffer, error: null }; } catch (error) { return { error }; } } /** * This is not real UUID validation * @param {string} uuid */ function isValidUUID(uuid) { const uuidRegex = /^[0-9a-f]{8}-[0-9a-f]{4}-[4][0-9a-f]{3}-[89ab][0-9a-f]{3}-[0-9a-f]{12}$/i; return uuidRegex.test(uuid); } const WS_READY_STATE_OPEN = 1; const WS_READY_STATE_CLOSING = 2; /** * Normally, WebSocket will not has exceptions when close. * @param {import("@cloudflare/workers-types").WebSocket} socket */ function safeCloseWebSocket(socket) { try { if (socket.readyState === WS_READY_STATE_OPEN || socket.readyState === WS_READY_STATE_CLOSING) { socket.close(); } } catch (error) { console.error('safeCloseWebSocket error', error); } } const byteToHex = []; for (let i = 0; i < 256; ++i) { byteToHex.push((i + 256).toString(16).slice(1)); } function unsafeStringify(arr, offset = 0) { return (byteToHex[arr[offset + 0]] + byteToHex[arr[offset + 1]] + byteToHex[arr[offset + 2]] + byteToHex[arr[offset + 3]] + "-" + byteToHex[arr[offset + 4]] + byteToHex[arr[offset + 5]] + "-" + byteToHex[arr[offset + 6]] + byteToHex[arr[offset + 7]] + "-" + byteToHex[arr[offset + 8]] + byteToHex[arr[offset + 9]] + "-" + byteToHex[arr[offset + 10]] + byteToHex[arr[offset + 11]] + byteToHex[arr[offset + 12]] + byteToHex[arr[offset + 13]] + byteToHex[arr[offset + 14]] + byteToHex[arr[offset + 15]]).toLowerCase(); } function stringify(arr, offset = 0) { const uuid = unsafeStringify(arr, offset); if (!isValidUUID(uuid)) { throw TypeError("Stringified UUID is invalid"); } return uuid; } /** * * @param {import("@cloudflare/workers-types").WebSocket} webSocket * @param {ArrayBuffer} vlessResponseHeader * @param {(string)=> void} log */ async function handleUDPOutBound(webSocket, vlessResponseHeader, log) { let isVlessHeaderSent = false; const transformStream = new TransformStream({ start(controller) { }, transform(chunk, controller) { // udp message 2 byte is the the length of udp data // TODO: this should have bug, beacsue maybe udp chunk can be in two websocket message for (let index = 0; index < chunk.byteLength;) { const lengthBuffer = chunk.slice(index, index + 2); const udpPakcetLength = new DataView(lengthBuffer).getUint16(0); const udpData = new Uint8Array( chunk.slice(index + 2, index + 2 + udpPakcetLength) ); index = index + 2 + udpPakcetLength; controller.enqueue(udpData); } }, flush(controller) { } }); // only handle dns udp for now transformStream.readable.pipeTo(new WritableStream({ async write(chunk) { const resp = await fetch('https://1.1.1.1/dns-query', { method: 'POST', headers: { 'content-type': 'application/dns-message', }, body: chunk, }) const dnsQueryResult = await resp.arrayBuffer(); const udpSize = dnsQueryResult.byteLength; // console.log([...new Uint8Array(dnsQueryResult)].map((x) => x.toString(16))); const udpSizeBuffer = new Uint8Array([(udpSize >> 8) & 0xff, udpSize & 0xff]); if (webSocket.readyState === WS_READY_STATE_OPEN) { log(`doh success and dns message length is ${udpSize}`); if (isVlessHeaderSent) { webSocket.send(await new Blob([udpSizeBuffer, dnsQueryResult]).arrayBuffer()); } else { webSocket.send(await new Blob([vlessResponseHeader, udpSizeBuffer, dnsQueryResult]).arrayBuffer()); isVlessHeaderSent = true; } } } })).catch((error) => { log('dns udp has error' + error) }); const writer = transformStream.writable.getWriter(); return { /** * * @param {Uint8Array} chunk */ write(chunk) { writer.write(chunk); } }; } /** * * @param {string} userID * @param {string | null} hostName * @returns {string} */ function getVLESSConfig(userID, hostName) { const vlessMain = `vle124ss://${userID}@${hostName}` return `${hostName}`; }
2024年06月26日
22 阅读
0 评论
1 点赞
2024-04-13
CSS初学
{lamp/}static-静态定位relative-相对定位absolute-绝对定位fixed-固定定位sticky<div style="margin-left: auto; margin-right: 25%;"> <p>这段文本向右移动了容器宽度的四分之一。</p> <p>这是另一行文本,也向右移动了容器宽度的四分之一。</p> </div>在这个示例中,margin-right: 25%;样式将使元素向右偏移其父容器宽度的四分之一。
2024年04月13日
17 阅读
0 评论
1 点赞
2024-02-12
Java基础复习
{lamp/}Java字符串细节 public class CharDetail { //编写一个main方法 public static void main(String[] args) { //在java中, char的本质是一个整数,在默认输出时,是 unicode 码对应的字符 //要输出对应的数字,可以(int)字符 char c1 = 97; System.out.println(c1); //a char c2 = 'a'; //输出'a'对应的数字 System.out.println((int)c2); char c3 = '顾'; System.out.println((int)c3); //输出类型是整型,所以输出顾对应的unicode码 char c4 = 39038; System.out.println(c4);//顾 System.out.println('a' + 10); //测试 char c5 = 'b' + 1; System.out.println((int)c5);//99 System.out.println(c5);//99->对应的字符就是编码表 ASCII(规定好的)=> char c6 = 'a'; System.out.ptintln(c6); } }运行如下:
2024年02月12日
27 阅读
0 评论
1 点赞
2024-02-12
免费好用的office软件,比wps office使用更加流畅丝滑
{lamp/}OnlyOffice OnlyOffice是一款自由的办公套件和具有协作功能的软件套件。它具有文本文档、电子表格、演示文稿、表格和PDF在线编辑器以及基于房间的协作平台。OnlyOffice 包括一个名为 OnlyOffice Docs 的在线编辑套件,其中包括:下载地址:https://www.onlyoffice.com/download-desktop.aspx文档编辑器(样式和格式化工具、对象、目录、书签、文档比较、邮件合并等)。电子表格编辑器(400 多个函数和公式、表格模板、命名范围、图表、方程、数据透视表、条件格式、宏等)。演示文稿编辑器(格式化工具、对象、样式选项、过渡、动画、演示者模式)。PDF编辑器(文本注释,包括突出显示、下划线、划掉;注释、手绘图)。表单创建者和填写者(多个可填写字段、扩展字段属性、导出为 PDF)。
2024年02月12日
17 阅读
1 评论
1 点赞
2024-02-02
C语言复习5(指针)
指针也就是内存地址,指针变量是用来存放内存地址的变量。就像其他变量或常量一样,您必须在使用指针存储其他变量地址之前,对其进行声明。指针变量声明的一般形式为:
2024年02月02日
26 阅读
0 评论
1 点赞
1
2
...
4