Notebook: Notebook gets Malformed HTTP headers from Chrome

[iandreariley]

When I attempt to view notebook at localhost:8888 in chrome, the connection times out, and jupyter notebook generates the following message:

[I 09:08:25.604 NotebookApp] Malformed HTTP message from ::1: Malformed HTTP headers: ''

I have also received:

Malformed HTTP message from ::1: Malformed HTTP headers: '\n\x05z\xc2\xaf\xc3\xa3\xc2\xa0\xc3\x90TP\x03\xc3\x9eSe\xc2\xa3\xc2\x96\xc2\x98\xc3\xab+\xc3\x84\xc3\xbd\xc2\x8a\x19\xc2\x861\xc3\xac3G\x00\x00 \n\n'

Everything works just fine in safari.

My setup is as follows:
macOS sierra 10.12.13
chrome 56.0.2924.87 (64-bit)
jupyter 4.2.0
jupyter notebook 4.2.3

and I'm simply running jupyter notbook from the command line. I get the following log ouput on launch, which I assume is normal:

[I 08:51:09.307 NotebookApp] [nb_conda_kernels] enabled, 3 kernels found
[I 08:51:09.729 NotebookApp] ✓ nbpresent HTML export ENABLED
[W 08:51:09.729 NotebookApp] ✗ nbpresent PDF export DISABLED: No module named nbbrowserpdf.exporters.pdf
[I 08:51:09.734 NotebookApp] [nb_conda] enabled
[I 08:51:09.813 NotebookApp] [nb_anacondacloud] enabled
[I 08:51:09.819 NotebookApp] Serving notebooks from local directory: /Users/ianriley/Development/kaggle
[I 08:51:09.819 NotebookApp] 0 active kernels
[I 08:51:09.819 NotebookApp] The Jupyter Notebook is running at: http://localhost:8888/
[I 08:51:09.819 NotebookApp] Use Control-C to stop this server and shut down all kernels (twice to skip confirmation).

I noticed the pdf warning message, but figured it's not important to viewing a notebook in a browser.

[laian]

same problem on mac

[labeebee]

Even I have the same problem. I tried it on my phone and even checked it with a few friends and it works. Mac is the one making it mess up.

[PeterisP]

Having the same issue on windows 10 with latest anaconda setup - doesn't work when accessing from Chrome with a long delay and the same malformed http message; works fine from Firefox.

[labeebee]

I think this has to do with https://: only. When I tried
http://:
it worked. Not sure of the reason though.

On Wed, Oct 4, 2017 at 5:12 AM, Pēteris Paikens [e-mail]
wrote:

Having the same issue on windows 10 with latest anaconda setup.

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[Rajjae]

Thanks @labeebee ! I encountered the same problem on mac, and your solution worked.

[labeebee]

@Rajjae You are welcome. 👍

[josephinemho]

Two solutions worked for me:

1) Resetting Chrome settings by going to chrome://settings/resetProfileSettings

2) Accessing the notebook via http instead of https (remove the "s" in http) - I was able to access my notebook this way via Safari, but not Chrome as Chrome defaults to https

[bbrighttaer]

@labeebee Thanks a lot!!!

[tanmayasang]

Thanks @labeebee,worked for me on GCP instance :)

[utotch]

same problem on Chrome on Mac to connect jupyter on GCP

[LuisAMM]

I had the same issue and managed to get it to load again by resetting my Chrome profile by going to chrome://settings/resetProfileSettings

[DarkKnightz027]

If you tried to use http://< ip > : < port > and didn't work, try this one:
Clear your browser's cache, then restart Jupiter.

[MohsennnMolaei]

[I 02:26:47.848 LabApp] Malformed HTTP message from 114.221.185.161: no colon in header line
[I 02:26:47.987 LabApp] Malformed HTTP message from 114.221.185.161: Malformed HTTP request line
Same problem on Chrome >>Windows 10 (Also tried on Incognito), works well on IE !!