Created
June 25, 2018 19:06
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| const http = require('http'); | |
| const { parse: urlParse } = require('url'); | |
| const { parse: querystringParse } = require('querystring'); | |
| const log = require('fancy-log'); | |
| const chalk = require('chalk'); | |
| const env = require('minimist')(process.argv.slice(2)); | |
| const getUrlVar = (where, item) => querystringParse(urlParse(where).query)[item]; | |
| const line = '-'.repeat(80); | |
| // destructuring & default | |
| const { | |
| hostname = 'romantycylekkichobyczajow.pl', | |
| port = 80, | |
| serverPort = 1337, | |
| method = 'get', | |
| requiredUrl = '/wp-json/wp/v2/', | |
| requiredContentType = 'application/json', | |
| } = env; | |
| log(chalk.yellow(`running localhost:${serverPort}`)); | |
| log(chalk.yellow('getting json(p) data')); | |
| log(chalk.yellow(`from ${hostname}:${port}${requiredUrl}...`)); | |
| log(chalk.yellow(`visit localhost:${serverPort}${requiredUrl}...`)); | |
| log(chalk.gray(line)); | |
| function onRequest(clientReq, clientRes) { | |
| const options = { | |
| hostname, | |
| port, | |
| path: clientReq.url, | |
| method, | |
| }; | |
| const proxy = http.request(options, function (res) { | |
| const contentType = res.headers['content-type']; | |
| const url = clientReq.url; | |
| if (!url.includes(requiredUrl) || !contentType.includes(requiredContentType)) { | |
| res.pipe(clientRes, { end: true }); | |
| log(chalk.gray(`skip (${res.headers['content-type']}) ${clientReq.url}`)); | |
| return; | |
| } | |
| let body = ''; | |
| const callBackName = getUrlVar(clientReq.url, 'callback') || 'autoCallBackNamePassCallbackParam'; | |
| res | |
| .on('data', chunk => { | |
| body += chunk; | |
| }) | |
| .on('end', () => { | |
| body = callBackName + '(' + body + ');'; | |
| res.headers['content-type'] = 'text/javascript; charset=utf-8'; | |
| res.headers['content-length'] = body.length; | |
| clientRes.writeHead(res.statusCode, res.headers); | |
| clientRes.end(body); | |
| }); | |
| log(`${chalk.blue('serve')} (${chalk.gray(res.headers['content-type'])}) ${clientReq.url}`); | |
| log(querystringParse(urlParse(clientReq.url).query)); | |
| log(chalk.gray(line)); | |
| }); | |
| clientReq.pipe(proxy, { end: true }); | |
| } | |
| http.createServer(onRequest).listen(serverPort); |
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