homebridge-smartsystem/duotecno/api.ts

SmartServer (Proxy Websockets to TCP sockets, Smappee MQTT, Duotecno IP Nodes, Homekit interface)

import * as http from "http";
import { err } from "./logger";




///////////////////
// http function //
///////////////////
export async function get(host: string, port: number, path: string, headers = {}): Promise<string> {
  return request('GET', host, port, path, {}, headers);
}

export async function post(host: string, port: number, path: string, body: object, headers = {}): Promise<string> {
  return request('POST', host, port, path, body, headers);
}

async function request(method: string, host: string, port: number, path: string, body: object, headers = {}): Promise<string> {
  let timer;
  let httpReq: http.ClientRequest;

  return new Promise<any>((resolve, reject) => {
    try {
      timer = setTimeout(() => { 
        if (httpReq) {
          httpReq.destroy();
        }
        reject("Request to " + host + path + " timed out"); 
      }, 4000);

      httpReq = http.request({ host, port, path, headers, method }, (response) => {
        let str = '';
      
        // another chunk of data has been received, so append it to `str`
        response.on('data', (chunk) => {
          str += chunk;
        });
      
        // the whole response has been received, 
        // stop the timer and resolve the promise with ithe collected result
        response.on('end', () => {
          if (timer) clearTimeout(timer);
          resolve(str);
        });

      }).on('error', (e) => {
        if (timer) clearTimeout(timer);
        err("http", "http.get failed with " + JSON.stringify(e));
        reject(e);
      });

      if (method === "POST") {
        httpReq.write(JSON.stringify(body));
      }
      httpReq.end();


    } catch(error) {
      err("http", "http.request " + method + " to " + host + " with " + path + " failed with " + error.message);
      reject(error);
    }
  });
}