Node Module.js

// // An "httputils" module for Node. // // Make an asynchronous HTTP GET request for the specified URL and pass the // HTTP status, headers and response body to the specified callback function. // Notice how we export this method through the exports object. exports.get = function(url, callback) { // Parse the URL and get the pieces we need from it url = require('url').parse(url); var hostname = url.hostname, port = url.port || 80; var path = url.pathname, query = url.query; if (query) path += "?" + query; // Make a simple GET request var client = require("http").createClient(port, hostname); var request = client.request("GET", path, { "Host": hostname // Request headers }); request.end(); // A function to handle the response when it starts to arrive request.on("response", function(response) { // Set an encoding so the body is returned as text, not bytes response.setEncoding("utf8"); // Save the response body as it arrives var body = "" response.on("data", function(chunk) { body += chunk; }); // When response is complete, call the callback response.on("end", function() { if (callback) callback(response.statusCode, response.headers, body); }); }); }; // Simple HTTP POST request with data as the request body exports.post = function(url, data, callback) { // Parse the URL and get the pieces we need from it url = require('url').parse(url); var hostname = url.hostname, port = url.port || 80; var path = url.pathname, query = url.query; if (query) path += "?" + query; // Figure out the type of data we're sending as the request body var type; if (data == null) data = ""; if (data instanceof Buffer) // Binary data type = "application/octet-stream"; else if (typeof data === "string") // String data type = "text/plain; charset=UTF-8"; else if (typeof data === "object") { // Name=value pairs data = require("querystring").stringify(data); type = "application/x-www-form-urlencoded"; } // Make a POST request, including a request body var client = require("http").createClient(port, hostname); var request = client.request("POST", path, { "Host": hostname, "Content-Type": type }); request.write(data); // Send request body request.end(); request.on("response", function(response) { // Handle the response response.setEncoding("utf8"); // Assume it is text var body = "" // To save the response body response.on("data", function(chunk) { body += chunk; }); response.on("end", function() { // When done, call the callback if (callback) callback(response.statusCode, response.headers, body); }); }); };