title: node-gyp configure error incorrect header check
body: <p>when install socket.io using npm i got this error..gyp configure error incorrect header check.and i have installed node-gyp and set python parameter also..</p>
  
  <pre>
     python version -2.7
     node version   -0.12.5
     npm version -2.11.2
  </pre>
  
  <pre><code>&gt; utf-8-validate@1.1.0 install /home/local/PAYODA/murugesan.p/Desktop/chat-example/node_modules/socket.io/node_modules/engine.io/node_modules/ws/node_modules/utf-8-validate
  &gt; node-gyp rebuild
  
  gyp WARN install got an error, rolling back install
  gyp ERR! configure error 
  gyp ERR! stack Error: incorrect header check
  gyp ERR! stack     at Zlib._handle.onerror (zlib.js:366:17)
  gyp ERR! System Linux 3.13.0-24-generic
  gyp ERR! command "node" "/usr/local/nodejs/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
  gyp ERR! cwd /home/local/PAYODA/murugesan.p/Desktop/chat-example/node_modules/socket.io/node_modules/engine.io/node_modules/ws/node_modules/utf-8-validate
  gyp ERR! node -v v0.12.5
  gyp ERR! node-gyp -v v2.0.1
  gyp ERR! not ok 
  
  &gt; bufferutil@1.1.0 install /home/local/PAYODA/murugesan.p/Desktop/chat-example/node_modules/socket.io/node_modules/engine.io/node_modules/ws/node_modules/bufferutil
  &gt; node-gyp rebuild
  
  gyp WARN install got an error, rolling back install
  gyp ERR! configure error 
  gyp ERR! stack Error: incorrect header check
  gyp ERR! stack     at Zlib._handle.onerror (zlib.js:366:17)
  gyp ERR! System Linux 3.13.0-24-generic
  gyp ERR! command "node" "/usr/local/nodejs/lib/node_modules/npm/node_modules/node-gyp/bin/node-gyp.js" "rebuild"
  gyp ERR! cwd /home/local/PAYODA/murugesan.p/Desktop/chat-example/node_modules/socket.io/node_modules/engine.io/node_modules/ws/node_modules/bufferutil
  gyp ERR! node -v v0.12.5
  gyp ERR! node-gyp -v v2.0.1
  gyp ERR! not ok 
  npm WARN optional dep failed, continuing utf-8-validate@1.1.0
  </code></pre>