title: Jupyter Notebook timeout waiting for response in Chrome
body: <p>When I run</p>
  
  <pre><code>jupyter notebook
  </code></pre>
  
  <p>in the terminal, jupyter appears to launches correctly, but any attempt to view the page at localhost:8888 in chrome ends with a timeout. It works just fine in Safari, but it looks like notebook is getting malformed request headers from chrome. Does anyone have suggestions for how to fix this problem?</p>
  
  <p>The output from jupyter reads:</p>
  
  <pre><code>[I 17:32:43.538 NotebookApp] [nb_conda_kernels] enabled, 3 kernels found
  [I 17:32:43.799 NotebookApp] ✓ nbpresent HTML export ENABLED
  [W 17:32:43.799 NotebookApp] ✗ nbpresent PDF export DISABLED: No module named nbbrowserpdf.exporters.pdf
  [I 17:32:43.802 NotebookApp] [nb_conda] enabled
  [I 17:32:43.846 NotebookApp] [nb_anacondacloud] enabled
  [I 17:32:43.852 NotebookApp] Serving notebooks from local directory: /Users/ianriley/Development/kaggle
  [I 17:32:43.852 NotebookApp] 0 active kernels 
  [I 17:32:43.852 NotebookApp] The Jupyter Notebook is running at: http://localhost:8888/
  [I 17:32:43.852 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).
  </code></pre>
  
  <p>However when I navigate to localhost:8888, nothing shows up, and the connection eventually times out. Jupyter then prints the following to console:</p>
  
  <pre><code>[I 17:53:15.524 NotebookApp] Malformed HTTP message from ::1: Malformed HTTP headers: ''
  </code></pre>
  
  <p>Perhaps the weirdest part of this is that I was able to run jupyter notebook just a couple of days ago, and I've not updated since then, to my knowledge. In case it is helpful, I'm running jupyter 4.2.0 on a macbook pro running sierra, and attempting to view the webpage with chrome v 56.0.2924.87. Thanks in advance for any help. Please let me know if I can supply additional information.</p>