我在代理服务器后面的Windows 7（管理员）中。我试图：＆＃34; npm install express＆＃34;在cmd终端上。我收到以下错误，该怎么办？
C:\Program Files\nodejs>npm config set proxy http://proxy.iiit.ac.in:8080
C:\Program Files\nodejs>npm config set https-proxy http://proxy.iiit.ac.in:8080
C:\Program Files\nodejs>npm config set https-proxy https://proxy.iiit.ac.in:8080
C:\Program Files\nodejs>npm install express
npm ERR! network tunneling socket could not be established, cause=4272:error:140
770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:openssl\ssl\s23_clnt.
c:795:
npm ERR! network
npm ERR! network This is most likely not a problem with npm itself
npm ERR! network and is related to network connectivity.
npm ERR! network In most cases you are behind a proxy or have bad network settin
gs.
npm ERR! network
npm ERR! network If you are behind a proxy, please make sure that the
npm ERR! network 'proxy' config is set properly. See: 'npm help config'
npm ERR! System Windows_NT 6.1.7601
npm ERR! command "C:\\Program Files\\nodejs\\\\node.exe" "C:\\Program Files\\nod
ejs\\node_modules\\npm\\bin\\npm-cli.js" "install" "express"
npm ERR! cwd C:\Program Files\nodejs
npm ERR! node -v v0.10.33
npm ERR! npm -v 1.4.28
npm ERR! code ECONNRESET
npm ERR!
npm ERR! Additional logging details can be found in:
npm ERR! C:\Program Files\nodejs\npm-debug.log
npm ERR! not ok code 0