Node.js 代理后面的 npm 失败，状态为 403

我正试着在代理后面跑npm英里.我try 过直接或通过Authoxy输入代理:

npm config set proxy http://localhost:8999
npm config set https-proxy http://localhost:8999

无论我使用哪个代理，在运行npm search时，我总是会出现相同的错误:

npm info it worked if it ends with ok
npm verb cli [ 'node', '/usr/local/bin/npm', 'search' ]
npm info using npm@1.1.45
npm info using node@v0.8.4
npm verb config file /Users/xxx/.npmrc
npm verb config file /usr/local/etc/npmrc
npm verb config file /usr/local/lib/node_modules/npm/npmrc
npm WARN Building the local index for the first time, please be patient
npm verb url raw /-/all
npm verb url resolving [ 'https://registry.npmjs.org/', './-/all' ]
npm verb url resolved https://registry.npmjs.org/-/all
npm info retry registry request attempt 1 at 09:48:47
npm http GET https://registry.npmjs.org/-/all
npm info retry will retry, error on last attempt: Error: tunneling socket could not be established, sutatusCode=403
npm info retry registry request attempt 2 at 09:48:57
npm http GET https://registry.npmjs.org/-/all
npm info retry will retry, error on last attempt: Error: tunneling socket could not be established, sutatusCode=403
npm info retry registry request attempt 3 at 09:49:57
npm http GET https://registry.npmjs.org/-/all
npm ERR! Error: tunneling socket could not be established, sutatusCode=403
npm ERR!     at ClientRequest.onConnect (/usr/local/lib/node_modules/npm/node_modules/request/tunnel.js:148:19)
npm ERR!     at ClientRequest.g (events.js:185:14)
npm ERR!     at ClientRequest.EventEmitter.emit (events.js:115:20)
npm ERR!     at Socket.socketOnData (http.js:1383:11)
npm ERR!     at TCP.onread (net.js:410:27)

命令总是以sutatusCode[sic！]403-这意味着未经授权.我已将Authoxy设置为不需要用户名/密码.当我绕过Authoxy并以http://user:pass@proxy:左舷.

我如何通过代理来实现这一点？

Update

我在NPM项目上创建了一个问题来报告这一点:https://github.com/isaacs/npm/issues/2866