1 files changed, 111 insertions, 0 deletions
diff --git a/deps/npm/node_modules/http-proxy-agent/index.js b/deps/npm/node_modules/http-proxy-agent/index.js
new file mode 100644
index 0000000000..f90a5297ca
--- /dev/null
+++ b/deps/npm/node_modules/http-proxy-agent/index.js
@@ -0,0 +1,111 @@
+
+/**
+ * Module dependencies.
+ */
+
+var net = require('net');
+var tls = require('tls');
+var url = require('url');
+var Agent = require('agent-base');
+var inherits = require('util').inherits;
+var debug = require('debug')('http-proxy-agent');
+
+/**
+ * Module exports.
+ */
+
+module.exports = HttpProxyAgent;
+
+/**
+ * The `HttpProxyAgent` implements an HTTP Agent subclass that connects to the
+ * specified "HTTP proxy server" in order to proxy HTTP requests.
+ *
+ * @api public
+ */
+
+function HttpProxyAgent (opts) {
+  if (!(this instanceof HttpProxyAgent)) return new HttpProxyAgent(opts);
+  if ('string' == typeof opts) opts = url.parse(opts);
+  if (!opts) throw new Error('an HTTP(S) proxy server `host` and `port` must be specified!');
+  debug('creating new HttpProxyAgent instance: %o', opts);
+  Agent.call(this, opts);
+
+  var proxy = Object.assign({}, opts);
+
+  // if `true`, then connect to the proxy server over TLS. defaults to `false`.
+  this.secureProxy = proxy.protocol ? /^https:?$/i.test(proxy.protocol) : false;
+
+  // prefer `hostname` over `host`, and set the `port` if needed
+  proxy.host = proxy.hostname || proxy.host;
+  proxy.port = +proxy.port || (this.secureProxy ? 443 : 80);
+
+  if (proxy.host && proxy.path) {
+    // if both a `host` and `path` are specified then it's most likely the
+    // result of a `url.parse()` call... we need to remove the `path` portion so
+    // that `net.connect()` doesn't attempt to open that as a unix socket file.
+    delete proxy.path;
+    delete proxy.pathname;
+  }
+
+  this.proxy = proxy;
+}
+inherits(HttpProxyAgent, Agent);
+
+/**
+ * Called when the node-core HTTP client library is creating a new HTTP request.
+ *
+ * @api public
+ */
+
+HttpProxyAgent.prototype.callback = function connect (req, opts, fn) {
+  var proxy = this.proxy;
+
+  // change the `http.ClientRequest` instance's "path" field
+  // to the absolute path of the URL that will be requested
+  var parsed = url.parse(req.path);
+  if (null == parsed.protocol) parsed.protocol = 'http:';
+  if (null == parsed.hostname) parsed.hostname = opts.hostname || opts.host;
+  if (null == parsed.port) parsed.port = opts.port;
+  if (parsed.port == 80) {
+    // if port is 80, then we can remove the port so that the
+    // ":80" portion is not on the produced URL
+    delete parsed.port;
+  }
+  var absolute = url.format(parsed);
+  req.path = absolute;
+
+  // inject the `Proxy-Authorization` header if necessary
+  if (proxy.auth) {
+    req.setHeader(
+      'Proxy-Authorization',
+      'Basic ' + Buffer.from(proxy.auth).toString('base64')
+    );
+  }
+
+  // create a socket connection to the proxy server
+  var socket;
+  if (this.secureProxy) {
+    socket = tls.connect(proxy);
+  } else {
+    socket = net.connect(proxy);
+  }
+
+  // at this point, the http ClientRequest's internal `_header` field might have
+  // already been set. If this is the case then we'll need to re-generate the
+  // string since we just changed the `req.path`
+  if (req._header) {
+    debug('regenerating stored HTTP header string for request');
+    req._header = null;
+    req._implicitHeader();
+    if (req.output && req.output.length > 0) {
+      debug('patching connection write() output buffer with updated header');
+      // the _header has already been queued to be written to the socket
+      var first = req.output[0];
+      var endOfHeaders = first.indexOf('\r\n\r\n') + 4;
+      req.output[0] = req._header + first.substring(endOfHeaders);
+      debug('output buffer: %o', req.output);
+    }
+  }
+
+  fn(null, socket);
+};