CommonJS HttpClient implementation for Node using node-fibers

httpclient.js

require('fibers');
var http = require('http');

exports.HttpClient = HttpClient;

// {method, url, headers, body}
// return value is {status:status, headers:{..}, body:[..]}
function HttpClient (settings) {
  if (!(this instanceof HttpClient)) return new HttpClient(settings);
  this.guts = {};
  if (settings) this.setOptions(settings);
};

HttpClient.prototype = {
  
  create : function () {
    this.setOptions({
        "method" : "GET",
        "headers" : {},
        "body" : []
    });
    return this;
  },

  setOptions : function (settings) {
    for (var key in settings)  if (settings.hasOwnProperty(key)) {
        this.setOption(key, settings[key]);
    }
    return this;
  },

  setOption : function (key, val) {
    switch (key) {
      case "headers":
          if (typeof val !== 'object') throw new Error(
              "HttpClient: headers must be a simple object."
          );
          return this.setHeaders(val);
      case "body":
          if (typeof val.forEach !== 'function') throw new Error(
              "HttpClient: body must be iterable."
          );
          // fallthrough
      default:
          this.guts[key] = val;
    }
    return this;
  },

  setHeaders : function (headers) {
    for (var h in headers) if (headers.hasOwnProperty(h)) {
        this.setHeader(h, headers[h]);
    }
    return this;
  },

  setHeader : function (key, val) {
    if (!this.guts.hasOwnProperty("headers")) this.guts.headers = {};
    this.guts.headers[key] = val;
    return this;
  },

  write : function (data) {
    var len = this.guts.headers["Content-Length"] || 0;
    len += data.length;
    this.guts.headers["Content-Length"] = len;
    this.guts.body.push(data);
    return this;
  },

  connect : function (decode) {  
    //if (decode) HttpClient.decode(resp);
    return this;
  },
  
  read : function() {
		var fiber = Fiber.current;
		var options = {
			method: this.guts.method,
			host: 'www.google.com',
			port: 80, //TODO extract this
			path: '/'
		};
		var req = http.request(options, function(response) {
			fiber.run(response);
		});
		req.end();
		
		var response = yield();
		var data = [];
		response.on('data', function(chunk) {
			data.push(chunk);
		});
		response.on('end', function() {
			fiber.run();
		});
		
		yield();
		
		return {
			status: response.statusCode, 
			headers: response.headers, 
			body: data.join('')
		};        
  },
  
  finish : function() {
    return this.connect().read(); 
  }
};