aliez-apireq/index.js

aliez request api webrequest httprequest

'use strict';

var http = require('http'), url = require('url');

var httpRequest = function(options, cb){
	/* options:
	 *
	 * {
	 * 		url: {string},				// 请求地址
	 * 		method: {string},			// 请求方法
	 * 		headers: {object},			// 可选请求头
	 * 		data: {object}				// 可选post数据
	 * }
	 */
	if('object' == typeof options){
		if('string' != typeof options.url){
			cb.call(this, new Error('no request url in option object'));
			return;
		}
		
		var reqobj = url.parse(options.url);
		delete reqobj.slashes;
		delete reqobj.hash;
		delete reqobj.search;
		delete reqobj.query;
		delete reqobj.pathname;
		delete reqobj.href;
		if(options.method){
			reqobj.method = options.method;
		}
		if(options.headers){
			reqobj.headers = options.headers;
			if(options.data && options.method == 'POST'){
				reqobj.headers['content-type'] = 'application/x-www-form-urlencoded';
			}
		}
		var req = http.request(reqobj, function(res){
			var buf = new Buffer('');
			res.on('data', function(chunk){
				buf = Buffer.concat([buf, chunk]);
			}).on('end', function(){
				try{
					var json = JSON.parse(buf.toString());
					if('function' == typeof cb){
						cb.call(this, null, json);
					}
				}catch(e){
					if('function' == typeof cb){
						cb.call(this, null, buf.toString());
					}
				}
			});
		});
		req.on('error', function(err){
			if('function' == typeof cb){
				cb.call(this, err);
			}
		}).on('timeout', function(){
			if('function' == typeof cb){
				cb.call(this, new Error('timeout'));
			}
		});
		if(options.timeout){
			req.setTimeout(options.timeout);
		}
		if(options.data && options.method == 'POST'){
			req.end(JSON.stringify(options.data));
		}else{
			req.end();
		}
	}else{
		if('function' == typeof cb) cb.call(this, new Error('No option object'));
	}
}

var request = function(req, res, done){
	req.apireq = httpRequest;
	done();
}

module.exports = request;