title: Git SSH over NPM behind a proxy not working
body: <p>I'm trying to do a npm install of a project which contains a dependency of a git repository, accessed by ssh.</p>
  
  <p>I'm receiving the following error </p>
  
  <pre><code>npm ERR! git fetch -a origin (git://github.com/chartjs/color-string.git) fatal:
      unable to connect to github.com:
  npm ERR! git fetch -a origin (git://github.com/chartjs/color-string.git) github.
      com[0: 192.30.252.122]: errno=Result too large
  npm ERR! Windows_NT 6.1.7601
  npm ERR! argv "C:\\Program Files\\nodejs\\node.exe" "C:\\Program Files\\nodejs\\
      node_modules\\npm\\bin\\npm-cli.js" "install"
  npm ERR! node v5.10.1
  npm ERR! npm  v3.8.3
  npm ERR! code 128
  </code></pre>
  
  <p>If I try the git fetch outside npm it works well, but inside the npm install process it fails.</p>
  
  <p>I have configured and working the <code>git http.proxy</code> and <code>https.proxy</code> configurations, and I have also a <code>GIT_SSH</code> environment variable, public and private keys, <code>.ssh/config</code> files for github... etc etc. 
  <strong>EDITED:</strong>
  I have also configured the npm http and https proxy</p>
  
  <p>It's like npm is overriding my <code>GIT_SSH</code> environment variable or the rest of git configuration.</p>
  
  <p>Any ideas?</p>
  
  <p>Thanks in advance.</p>