Add http tunnel client implements

This commit is contained in:
Sambo Chea 2022-06-24 23:44:12 +07:00
parent c68968022e
commit 1c5468bbe8
7 changed files with 599 additions and 132 deletions

132
.gitignore vendored
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# http-tunnel-client # HTTP Tunnel Client
A lightweight http tunnel client using nodejs.
### Contributors
- Original [web-tunnel](https://github.com/web-tunnel/lite-http-tunnel-client)
- Sambo Chea <sombochea@cubetiqs.com>

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bin/http-tunnel Normal file
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#!/usr/bin/env node
require('../client');

179
client.js Normal file
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const os = require("os");
const fs = require("fs");
const path = require("path");
const http = require("http");
const { io } = require("socket.io-client");
const HttpsProxyAgent = require("https-proxy-agent");
const { program, InvalidArgumentError, Argument } = require("commander");
const { TunnelRequest, TunnelResponse } = require("./lib");
let socket = null;
function keepAlive() {
setTimeout(() => {
if (socket && socket.connected) {
socket.send("ping");
}
keepAlive();
}, 5000);
}
function initClient(options) {
const initParams = {
path: "/$web_tunnel",
transports: ["websocket"],
auth: {
token: options.token,
},
};
const http_proxy = process.env.https_proxy || process.env.http_proxy;
if (http_proxy) {
initParams.agent = new HttpsProxyAgent(http_proxy);
}
socket = io(options.server, initParams);
socket.on("connect", () => {
if (socket.connected) {
console.log("client connect to server successfully");
}
});
socket.on("connect_error", (e) => {
console.log("connect error", e && e.message);
});
socket.on("disconnect", () => {
console.log("client disconnected");
});
socket.on("request", (requestId, request) => {
const isWebSocket = request.headers.upgrade === "websocket";
console.log(`${isWebSocket ? "WS" : request.method}: `, request.path);
request.port = options.port;
request.hostname = options.host;
if (options.origin) {
request.headers.host = options.origin;
}
const tunnelRequest = new TunnelRequest({
requestId,
socket: socket,
});
const localReq = http.request(request);
tunnelRequest.pipe(localReq);
const onTunnelRequestError = (e) => {
tunnelRequest.off("end", onTunnelRequestEnd);
localReq.destroy(e);
};
const onTunnelRequestEnd = () => {
tunnelRequest.off("error", onTunnelRequestError);
};
tunnelRequest.once("error", onTunnelRequestError);
tunnelRequest.once("end", onTunnelRequestEnd);
const onLocalResponse = (localRes) => {
localReq.off("error", onLocalError);
if (isWebSocket && localRes.upgrade) {
return;
}
const tunnelResponse = new TunnelResponse({
responseId: requestId,
socket: socket,
});
tunnelResponse.writeHead(
localRes.statusCode,
localRes.statusMessage,
localRes.headers,
localRes.httpVersion
);
localRes.pipe(tunnelResponse);
};
const onLocalError = (error) => {
console.log(error);
localReq.off("response", onLocalResponse);
socket.emit("request-error", requestId, error && error.message);
tunnelRequest.destroy(error);
};
const onUpgrade = (localRes, localSocket, localHead) => {
// localSocket.once('error', onTunnelRequestError);
if (localHead && localHead.length) localSocket.unshift(localHead);
const tunnelResponse = new TunnelResponse({
responseId: requestId,
socket: socket,
duplex: true,
});
tunnelResponse.writeHead(null, null, localRes.headers);
localSocket.pipe(tunnelResponse).pipe(localSocket);
};
localReq.once("error", onLocalError);
localReq.once("response", onLocalResponse);
if (isWebSocket) {
localReq.on("upgrade", onUpgrade);
}
});
keepAlive();
}
program.name("http-tunnel").description("HTTP tunnel client");
program
.command("start")
.argument("<port>", "local server port number", (value) => {
const port = parseInt(value, 10);
if (isNaN(port)) {
throw new InvalidArgumentError("Not a number.");
}
return port;
})
.option("-p, --profile <string>", "setting profile name", "config")
.option("-h, --host <string>", "local host value", "localhost")
.option("-o, --origin <string>", "change request origin")
.action((port, options) => {
const configDir = path.resolve(os.homedir(), ".http-tunnel");
if (!fs.existsSync(configDir)) {
fs.mkdirSync(configDir);
}
let config = {};
const configFilePath = path.resolve(configDir, `${options.profile}.json`);
if (fs.existsSync(configFilePath)) {
config = JSON.parse(fs.readFileSync(configFilePath, "utf8"));
}
if (!config.server) {
console.log("Please set remote tunnel server firstly");
return;
}
if (!config.token) {
console.log(`Please set jwt token for ${config.server} firstly`);
return;
}
options.port = port;
options.token = config.token;
options.server = config.server;
initClient(options);
});
program
.command("config")
.addArgument(new Argument("<type>", "config type").choices(["jwt", "server"]))
.argument("<value>", "config value")
.option("-p --profile <string>", "setting profile name", "config")
.action((type, value, options) => {
const configDir = path.resolve(os.homedir(), ".http-tunnel");
if (!fs.existsSync(configDir)) {
fs.mkdirSync(configDir);
}
let config = {};
const configFilePath = path.resolve(configDir, `${options.profile}.json`);
if (fs.existsSync(configFilePath)) {
config = JSON.parse(fs.readFileSync(configFilePath, "utf8"));
}
if (type === "jwt") {
config.token = value;
}
if (type === "server") {
config.server = value;
}
fs.writeFileSync(configFilePath, JSON.stringify(config, null, 2));
console.log(`${type} config saved successfully`);
});
program.parse();

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lib.js Normal file
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const stream = require("stream");
class TunnelRequest extends stream.Readable {
constructor({ socket, requestId }) {
super();
this._socket = socket;
this._requestId = requestId;
const onRequestPipe = (requestId, data) => {
if (this._requestId === requestId) {
this.push(data);
}
};
const onRequestPipes = (requestId, data) => {
if (this._requestId === requestId) {
data.forEach((chunk) => {
this.push(chunk);
});
}
};
const onRequestPipeError = (requestId, error) => {
if (this._requestId === requestId) {
this._socket.off("request-pipe", onRequestPipe);
this._socket.off("request-pipes", onRequestPipes);
this._socket.off("request-pipe-error", onRequestPipeError);
this._socket.off("request-pipe-end", onRequestPipeEnd);
this.destroy(new Error(error));
}
};
const onRequestPipeEnd = (requestId, data) => {
if (this._requestId === requestId) {
this._socket.off("request-pipe", onRequestPipe);
this._socket.off("request-pipes", onRequestPipes);
this._socket.off("request-pipe-error", onRequestPipeError);
this._socket.off("request-pipe-end", onRequestPipeEnd);
if (data) {
this.push(data);
}
this.push(null);
}
};
this._socket.on("request-pipe", onRequestPipe);
this._socket.on("request-pipes", onRequestPipes);
this._socket.on("request-pipe-error", onRequestPipeError);
this._socket.on("request-pipe-end", onRequestPipeEnd);
}
_read() {}
}
class TunnelResponse extends stream.Duplex {
constructor({ socket, responseId, duplex }) {
super();
this._socket = socket;
this._responseId = responseId;
if (duplex) {
// for websocket request bidirection
const onResponsePipe = (responseId, data) => {
if (this._responseId === responseId) {
this.push(data);
}
};
const onResponsePipes = (responseId, data) => {
if (this._responseId === responseId) {
data.forEach((chunk) => {
this.push(chunk);
});
}
};
const onResponsePipeError = (responseId, error) => {
if (this._responseId === responseId) {
this._socket.off("response-pipe", onResponsePipe);
this._socket.off("response-pipes", onResponsePipes);
this._socket.off("response-pipe-error", onResponsePipeError);
this._socket.off("response-pipe-end", onResponsePipeEnd);
this.destroy(new Error(error));
}
};
const onResponsePipeEnd = (responseId, data) => {
if (this._responseId === responseId) {
this._socket.off("response-pipe", onResponsePipe);
this._socket.off("response-pipes", onResponsePipes);
this._socket.off("response-pipe-error", onResponsePipeError);
this._socket.off("response-pipe-end", onResponsePipeEnd);
if (data) {
this.push(data);
}
this.push(null);
}
};
this._socket.on("response-pipe", onResponsePipe);
this._socket.on("response-pipes", onResponsePipes);
this._socket.on("response-pipe-error", onResponsePipeError);
this._socket.on("response-pipe-end", onResponsePipeEnd);
}
}
_write(chunk, encoding, callback) {
this._socket.emit("response-pipe", this._responseId, chunk);
this._socket.io.engine.once("drain", () => {
callback();
});
}
_writev(chunks, callback) {
this._socket.emit("response-pipes", this._responseId, chunks);
this._socket.io.engine.once("drain", () => {
callback();
});
}
_final(callback) {
this._socket.emit("response-pipe-end", this._responseId);
this._socket.io.engine.once("drain", () => {
callback();
});
}
_destroy(e, callback) {
if (e) {
this._socket.emit(
"response-pipe-error",
this._responseId,
e && e.message
);
this._socket.io.engine.once("drain", () => {
callback();
});
return;
}
callback();
}
writeHead(statusCode, statusMessage, headers, httpVersion) {
this._socket.emit("response", this._responseId, {
statusCode,
statusMessage,
headers,
httpVersion,
});
}
_read(size) {}
}
exports.TunnelRequest = TunnelRequest;
exports.TunnelResponse = TunnelResponse;

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package-lock.json generated Normal file
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}

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package.json Normal file
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{
"name": "@cubetiq/http-tunnel-client",
"version": "1.0.0",
"description": "A lightweight http tunnel client",
"main": "client.js",
"bin": {
"http-tunnel": "bin/http-tunnel"
},
"scripts": {
"start": "node client.js"
},
"repository": {
"type": "git",
"url": "https://git.cubetiqs.com/cubetiq/http-tunnel-client.git"
},
"keywords": [
"http-tunnel-client"
],
"author": "Sambo Chea <sombochea@cubetiqs.com>",
"license": "ISC",
"dependencies": {
"commander": "^9.3.0",
"https-proxy-agent": "^5.0.1",
"socket.io-client": "^4.5.1"
}
}