我在自耕农，凉亭，咕噜声和最新的npm版本的安装方面遇到了问题。
我的电脑上安装了最新版本的NodeJS（0.12.2）。 我有npm版本2.7.4，但当我在nodejs文件夹中启动git bash并输入“npm install npm”或“npm install npm @ latest”时，它会显示一条错误消息：
error Windows_NT 6.1.7601
error argv "c:\\Program Files\\nodejs\\node.exe" "c:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "npm@latest"
error node v0.12.2
error npm v2.7.4
error code ETIMEDOUT
error errno ETIMEDOUT
error syscall connect
error network connect ETIMEDOUT
error network This is most likely not a problem with npm itself
error network and is related to network connectivity.
error network In most cases you are behind a proxy or have bad network settings.
error network
error network If you are behind a proxy, please make sure that the
error network 'proxy' config is set properly. See: 'npm help config'
verbose exit [ 1, true ]
完整的调试日志：
0 info it worked if it ends with ok
1 verbose cli [ 'c:\\Program Files\\nodejs\\node.exe',
1 verbose cli 'c:\\Program Files\\nodejs\\node_modules\\npm\\bin\\npm-cli.js',
1 verbose cli 'install',
1 verbose cli 'npm@latest' ]
2 info using npm@2.7.4
3 info using node@v0.12.2
4 warn package.json nodejs@0.12.2 No description
5 warn package.json nodejs@0.12.2 No repository field.
6 warn package.json nodejs@0.12.2 No README data
7 silly cache add args [ 'npm@latest', null ]
8 verbose cache add spec npm@latest
9 silly cache add parsed spec { raw: 'npm@latest',
9 silly cache add scope: null,
9 silly cache add name: 'npm',
9 silly cache add rawSpec: 'latest',
9 silly cache add spec: 'latest',
9 silly cache add type: 'tag' }
10 verbose addNamed npm@latest
11 silly addNamed semver.valid null
12 silly addNamed semver.validRange null
13 info addNameTag [ 'npm', 'latest' ]
14 silly mapToRegistry name npm
15 silly mapToRegistry using default registry
16 silly mapToRegistry registry https://registry.npmjs.org/
17 silly mapToRegistry uri https://registry.npmjs.org/npm
18 verbose addNameTag registry:https://registry.npmjs.org/npm not in flight; fetching
19 verbose request uri https://registry.npmjs.org/npm
20 verbose request no auth needed
21 info attempt registry request try #1 at 09:30:04
22 verbose request id 6fa6dc64e92e52cc
23 http request GET https://registry.npmjs.org/npm
24 info retry will retry, error on last attempt: Error: connect ETIMEDOUT
25 info attempt registry request try #2 at 09:30:35
26 http request GET https://registry.npmjs.org/npm
27 info retry will retry, error on last attempt: Error: connect ETIMEDOUT
28 info attempt registry request try #3 at 09:31:56
29 http request GET https://registry.npmjs.org/npm
30 verbose stack Error: connect ETIMEDOUT
30 verbose stack at exports._errnoException (util.js:746:11)
30 verbose stack at TCPConnectWrap.afterConnect [as oncomplete] (net.js:1000:19)
31 verbose cwd c:\Program Files\nodejs
我已经阅读了一些有nodejs问题的线程，并发现了设置http代理的能力。那是解决方案吗？