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74 lines
1.8 KiB
74 lines
1.8 KiB
var http = require('http');
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var https = require('https');
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var url = require('url');
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var isHttpResource = require('../utils/is-http-resource');
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var isHttpsResource = require('../utils/is-https-resource');
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var override = require('../utils/override');
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var HTTP_PROTOCOL = 'http:';
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function loadRemoteResource(uri, inlineRequest, inlineTimeout, callback) {
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var proxyProtocol = inlineRequest.protocol || inlineRequest.hostname;
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var errorHandled = false;
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var requestOptions;
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var fetch;
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requestOptions = override(
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url.parse(uri),
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inlineRequest || {}
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);
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if (inlineRequest.hostname !== undefined) {
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// overwrite as we always expect a http proxy currently
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requestOptions.protocol = inlineRequest.protocol || HTTP_PROTOCOL;
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requestOptions.path = requestOptions.href;
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}
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fetch = (proxyProtocol && !isHttpsResource(proxyProtocol)) || isHttpResource(uri) ?
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http.get :
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https.get;
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fetch(requestOptions, function (res) {
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var chunks = [];
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var movedUri;
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if (errorHandled) {
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return;
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}
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if (res.statusCode < 200 || res.statusCode > 399) {
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return callback(res.statusCode, null);
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} else if (res.statusCode > 299) {
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movedUri = url.resolve(uri, res.headers.location);
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return loadRemoteResource(movedUri, inlineRequest, inlineTimeout, callback);
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}
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res.on('data', function (chunk) {
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chunks.push(chunk.toString());
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});
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res.on('end', function () {
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var body = chunks.join('');
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callback(null, body);
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});
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})
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.on('error', function (res) {
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if (errorHandled) {
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return;
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}
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errorHandled = true;
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callback(res.message, null);
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})
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.on('timeout', function () {
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if (errorHandled) {
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return;
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}
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errorHandled = true;
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callback('timeout', null);
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})
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.setTimeout(inlineTimeout);
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}
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module.exports = loadRemoteResource;
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