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enable proxy if https_proxy taken by env #39

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enable proxy if https_proxy taken by env #39

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1fa5224
added proxy if https_proxy taken by env
muddydixon May 20, 2016
df3e1c7
supported http/s proxy
muddydixon Jun 14, 2016
99be0b5
fix: according to comment
muddydixon Nov 18, 2016
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21 changes: 20 additions & 1 deletion lib/wit.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,8 +3,10 @@
const fetch = require('node-fetch');
const readline = require('readline');
const uuid = require('node-uuid');
const Url = require('url');
const Logger = require('./logger').Logger;
const logLevels = require('./logger').logLevels;
const HttpsProxyAgent = require('https-proxy-agent');

const DEFAULT_API_VERSION = '20160516';
const DEFAULT_MAX_STEPS = 5;
Expand Down Expand Up @@ -59,7 +61,7 @@ const validateActions = (actions) => {
if (!actions.error) {
throw new Error('The \'error\' action is missing. ' + learnMore);
}

Object.keys(actions).forEach(key => {
if (typeof actions[key] !== 'function') {
l.warn('The \'' + key + '\' action should be a function.');
Expand Down Expand Up @@ -109,9 +111,24 @@ const clone = (obj) => {
}
};

const getProxyAgent = (wit_url) => {
const url = Url.parse(wit_url);
const proxy = url.protocol === "http:" ?
process.env.http_proxy || process.env.HTTP_PROXY :
process.env.https_proxy || process.env.HTTPS_PROXY;
const noProxy = process.env.no_proxy || process.env.NO_PROXY;

const shouldIgnore = noProxy && noProxy.indexOf(url.hostname) > -1;
if (proxy && !shouldIgnore) {
return new HttpsProxyAgent(proxy);
}
if(!proxy) return null;
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nit: maybe we can rewrite like so ->

const shouldIgnore = noProxy && noProxy.indexOf(url.hostname > -1

if (proxy && !shouldIgnore) {
  return new HttpsProxyAgent(proxy)
}

};

const Wit = function(token, actions, logger) {
const baseURL = process.env.WIT_URL || 'https://api.wit.ai';
const version = process.env.WIT_API_VERSION || DEFAULT_API_VERSION;
const proxyAgent = getProxyAgent(baseURL);
const headers = {
'Authorization': 'Bearer ' + token,
'Accept': 'application/vnd.wit.' + version + '+json',
Expand All @@ -135,6 +152,7 @@ const Wit = function(token, actions, logger) {
fetch(baseURL + '/message?' + qs, {
method: 'GET',
headers: headers,
agent: proxyAgent
})
.then(response => Promise.all([response.json(), response.status]))
.then(handler)
Expand All @@ -152,6 +170,7 @@ const Wit = function(token, actions, logger) {
method: 'POST',
headers: headers,
body: JSON.stringify(context),
agent: proxyAgent
})
.then(response => Promise.all([response.json(), response.status]))
.then(handler)
Expand Down
1 change: 1 addition & 0 deletions package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,7 @@
"repository": "https://github.com/wit-ai/node-wit",
"author": "Julien Odent <[email protected]>",
"dependencies": {
"https-proxy-agent": "^1.0.0",
"node-fetch": "^1.5.1",
"node-uuid": "^1.4.7"
}
Expand Down