Added assignment-1

assignment-1/config.js

@@ -0,0 +1,30 @@
+/*
+ * Create and export configuration variables
+ *
+ */
+
+// Container for all environments
+const environments = {};
+
+// Staging (default) environment
+environments.staging = {
+  'httpPort' : 3000,
+  'httpsPort' : 3001,
+  'envName' : 'staging'
+};
+
+// Production environment
+environments.production = {
+  'httpPort' : 5000,
+  'httpsPort' : 5001,
+  'envName' : 'production'
+};
+
+// Determine which environment was passed as a command-line argument
+const currentEnvironment = typeof(process.env.NODE_ENV) == 'string' ? process.env.NODE_ENV.toLowerCase() : '';
+
+// Check that the current environment is one of the environments above, if not default to staging
+const environmentToExport = typeof(environments[currentEnvironment]) == 'object' ? environments[currentEnvironment] : environments.staging;
+
+// Export the module
+module.exports = environmentToExport;

assignment-1/https/cert.pem

@@ -0,0 +1,24 @@
+-----BEGIN CERTIFICATE-----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+YHtfVsxcLtJnx7Oc44v42WVnomUv03wfGdJn+Dq9PwF+9yXajg0i2himop/Uo9wz
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+9kszxLZB2zQr9ooSSVGI3VSgIWR1FEZNfgCP6+vFAgMBAAGjUzBRMB0GA1UdDgQW
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+vsD67g+bJDAPBgNVHRMBAf8EBTADAQH/MA0GCSqGSIb3DQEBCwUAA4IBAQCmISx9
+/WHZsC22vIDo6mNJUKeMqHp2qVGz16sGmCW2388z/xVWhM/ODxjgcg/IBvDMfXtM
+spLt/voykTyk59qMM+QgTgjsfd3aSUB6hEaFIJxHevI9A0G5NJFFlyUsq6hY5ugx
+n+LuOPTyLBrnK+W7ICxtYm3PTA+TlqUI1klbknhpaj4JQaXBAKPC4IGzA9qag3ii
+wC2vdsB+mSwSNuhU8ku9eadDskGM3DBkNac8FSym7fzuZEMvzzGN9aPUI6RegLDb
+RfMBJ2EjN3aMpsP7aG4WfY23MEYfZZhEF6JEakyBYFa0vtlJvVVoxgNSMnPO9iHW
+3zRy2K4Ebxjg6Icq
+-----END CERTIFICATE-----

assignment-1/https/key.pem

@@ -0,0 +1,28 @@
+-----BEGIN PRIVATE KEY-----
+MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQD10Q1Syh8vUVN+
+ELL20UyqFTo4iqNXsYCmocWDrlHTJkO4xNkLOJprlSdxQkDoWpKIcvY9dQJHbSu8
+1qIy13nrZ57NuEEcfpyyYpG93cVHhJk3O1JMgGUmY2heXHeeU4+TGwOB9Wykz9cj
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+GdJn+Dq9PwF+9yXajg0i2himop/Uo9wzYjW1pYIGab/uAxU6ikv06scZhH8l88bW
+H8LRgT3xEbeyqhcOUdYtGP+jAJlMK+dx9kszxLZB2zQr9ooSSVGI3VSgIWR1FEZN
+fgCP6+vFAgMBAAECggEBAIwAqsPyVlyOxyzPuf4VKsLcIDK/01RIxmshS+s5x2Sp
+MHz1sGBRtrF7W+GHyIwNudN5FoHeOJQRu41r+SlXzBqlA69LN9pQylJXDYbD3m5j
+ORhZ8v+bSQDaMUE9DOvhz64K/q5v55bewTuoDrNaKY+EDQlGTiDhxFBVjpgF+9Pr
+hUbQ0FDtic0qGEheXcmKtPCggEYoBIdXyPvaftigPg7IJeeXMMISSp9p6X9vIvuu
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+QwEs9y+4RovX8a7/fbS4kC6nl8eAvObZJkXueU8S1kECgYEA/FIsr4IDpPgiohbo
+1cOG3QsL/v2HP4vBnTz6vyPfwLMmqi7J0XdROfnw5EXHN741BlcSQejCO52OlIBG
+/Kt2NRmSrjn3gzw5vyzmokCwqIHRtC9Ue8O/e3wniVWXnbJZQYzFX3Uze6on/sIg
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+5SOuQjWIWp0CgYEApEsZf5onp1ZOrr4+E1qCSRG1WO5aD11/z1Nybdz9B6tfRLa8
+gKCxig+d8/Ufd8NpIVy2raXSOyEnQriYAFPg30hsgveJm7EuZLXm4sU+giotkqay
+2velidFYqQrLc0o65fy0U6irwh0Ud8SNv4RvZKhmQv+bhpjCVIrKYKA46skCgYB0
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+0aS6NNmdxgNn8KQc7/xhrrrsK3vPiWuUxnGVv2UY45N0xsCfFElrSmaUHS2j6/zh
+wWHwH58ncsn8+OIRjbWfiii0EIHUq16GHqCnnlFvJQKBgC4erKAQyLf2a9zVpKhs
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+uJrinuDOSvEVv8H8ZKTuOMXRVD4PSpC0wMMJR6uPH1ce8+KHyzcLzcV+6OoiZDLu
+z3U9pX/nq0yUlLGYKaHSUczC
+-----END PRIVATE KEY-----

assignment-1/index.js

@@ -0,0 +1,112 @@
+/*
+  Homework assignment #1
+*/
+
+
+// import all dependencies
+
+const http = require('http');
+const https = require('https');
+const url  = require('url' );
+const { StringDecoder } = require('string_decoder');
+const fs = require('fs');
+const config = require('./config');
+
+// create a http server and start it
+http.createServer((req , res) => {
+  unifiedServer(req ,res);
+})
+.listen(config.httpPort, () => console.log("http Server listening on port " + config.httpPort));
+
+
+let httpsServerOptions = {
+  'key': fs.readFileSync('./https/key.pem'),
+  'cert': fs.readFileSync('./https/cert.pem')
+};
+
+// create a https server and start it
+https.createServer(httpsServerOptions,(req,res) =>{
+  unifiedServer(req,res);
+})
+.listen(config.httpsPort,()=>{
+ console.log("https Server listening on port "+config.httpsPort);
+});
+
+
+//create a unifiedServer
+const unifiedServer = (req ,res) => {
+
+  // get headers and method from request object
+  let { headers , method } = req ;
+
+  //parse the url from request object
+  let parsedUrl = url.parse(req.url , true);
+
+  //get query and pathname from parsedUrl
+  let { pathname , query } = parsedUrl;
+
+  //trim the pathname using regex
+  let trimmedPath = pathname.replace(/^\/+|\/+$/g, '');
+
+
+  //get payload from request , if any
+  let decoder = new StringDecoder('utf-8');
+
+  let buffer = '';
+  req.on('data' , (data) => buffer += decoder.write(data));
+  req.on('end' , () => {
+    buffer += decoder.end();
+
+    // Construct the data object to send to the handler
+    let data = {
+      'trimmedPath' : trimmedPath,
+      'queryStringObject' : query,
+      'method' : method.toLowerCase(),
+      'headers' : headers,
+      'payload' : buffer
+    };
+
+    //choose a handler from router
+    let chosenHandler = router[trimmedPath] ? router[trimmedPath] : handlers.notFound;
+
+    //route the request to chosen handler
+    chosenHandler(data, (statusCode, payload) => {
+      // Use the status code returned from the handler, or set the default status code to 200
+      statusCode = typeof(statusCode) == 'number' ? statusCode : 200;
+
+      // Use the payload returned from the handler, or set the default payload to an empty object
+      payload = typeof(payload) == 'object'? payload : {};
+
+      // Convert the payload to a string
+      let payloadString = JSON.stringify(payload);
+
+      // Return the response
+      res.writeHead(statusCode,{'Content-Type': 'application/json'});
+      res.end(payloadString);
+      console.log("Returning this response: ",statusCode,payloadString);
+
+    });
+
+
+  });
+
+};
+
+
+//define handlers
+const handlers = {};
+
+//hello handler
+handlers.hello = (data , callback) => {
+  callback(300 , {'welcomeMessage': 'welcome to my assignment #1'});
+}
+//not found handler , returns empty object
+handlers.notFound = (data , callback) => {
+  callback(404);
+}
+
+//define router
+
+const router = {
+  'hello' : handlers.hello
+}