I have an application that uses Holoviews to generate a heatmap plot that is rendered using Bokeh. I upgraded from a Python 2.7 to 3.7 environment and the saved .html plots no longer support the ability to pan, zoom, or reset. I had previously saved versions of the .html files and performed a file diff between and found a few lines that were no longer present in the .html file. I copied those lines from the previous version into the new version and see that the interactive functions now work again. After editing for version, the lines below are what I copied from the old version to the new version to get things working.
link rel="stylesheet" href="https://cdn.pydata.org/bokeh/release/bokeh-1.3.4.min.css"
link rel="stylesheet" href="https://cdn.pydata.org/bokeh/release/bokeh-widgets-1.3.4.min.css"
link rel="stylesheet" href="https://cdn.pydata.org/bokeh/release/bokeh-tables-1.3.4.min.css"
These appear to be related to BokehJS, but I have not been able to figure out what might be missing for them to start being included again. This a server app, and these functions work while the server is running. However, it used to continue to work after closing the server and when opening the saved .html file.
It's never been expected that Bokeh Server app pages could be saved as functioning static HTML, and if that was ever the case in any sense it was unintended and undefined behavior.
Whenever anything like panning or zooming happens, a Bokeh server app page is going to try to communicate those changes to the running Bokeh server (so that any callbacks can run, that's the purpose of a Bokeh server). But if you just "save" the app page, then all these communication attempts cannot succeed because there is no longer a server process for the page to communicate with. I expect if you look at the browser JS console log you will see very many error messages about failed connections, protocol errors, etc.
Related
I am trying to improve my site load speed. When checking on the network requests, there is something that doesn't make sense to me:
How can the content that is going to be requested (css and js files) is being download before the html content has been downloaded?
I have tried with a hard reload and empty cache from chrome, but this has happened again. Morover, the files seem to be dowload from the server and not from the cache.
Another thing I don't get, is why chrome is pating the bar chart almost all with blue, when the majority of the time is waiting for the server to respond (TTFB).
Thanks in advance!
There's a couple of possibilities:
The HTML doesn't download all at once. It's possible for the server to send part of the page, pause, then send the rest. If the part that's sent first contains references to CSS, JS, image, font, or other files, the browser can start downloading those files as soon as it sees them referenced.
HTTP 2.0 supports "server push", a scheme where the web server can indicate to the client through HTTP headers that it should start downloading specific other files. Judging from some of the file names in your network tab, you're using Cloudflare; they use server push for some features, including "Rocket Loader".
Unfortunately I cannot put the code here because despite all kinds of debugging I cannot point to the problem to present the problematic segment of the code. If I try to load a HTML which in turn has other requests (js,css,png, etc.), it loads all except one... The server/browser hangs for some time and then after about a minute or so does actually load! If I try to test the server with individual manual requests of these very URLs in the HTML file, it works fine.
While tying to load the HTML file, Chrome Network tab shows "pending..." of one request or sometimes two. But ultimately all the URLs requested are served. Thats what bugs me...
I tried to set http.globalAgent.maxSockets to 100 as suggested here as the HTML file would make more than 8 requests for the different js, css, etc. This did not help either.
I have reached a deadend. Any help would be appreciated.
I'm using Windows 10 Technical preview. I know it's not yet tweeked out to full usage, but here is my problem.
On local IIS I'm developing my web app. It loads most of the data via ASP.NET MVC API. After the upgrade to Windows 10 I started to get
net::ERR_SPDY_PROTOCOL_ERROR
for all AJAX calls to API. The HTML page loads normally, but the dynamic loading of data content fails. I managed to figure it out by starting Chrome with parameters
--use-spdy=off --use-system-ssl
Strange thing is that on the first start I always get this error and have to restart Chrome. Other browsers fail too, but not with specific error. For the transfer there is used HTTP2.0 protocol, which is based on SPDY protocol.
Do I have to turn something off in IIS?
Edit:
Seems like an IIS problem with HTTP2.0. When trying to enter the site from Windows 8.1 I get the same error.
Most people’s reaction to this error would be to reload the web page. We would actually recommend this as a first response. Sometimes this even does work.
Interesting Factoid: SPDY actually stands for “speedy” and is used to reduce a web pages’ load time
If reloading the web pages does not remove the error, then you should close down Google Chrome and restart it. This alone will not really solve the problem because you will need to clear the cache as soon as you restart the browser.
or in cmd clear dns using this command ipconfig/flushdns
I am working on a local project (read: offline) and I am trying to get Brackets' live preview to work since it comes in handy quite often.
Right now I have opened my project files using Brackets' "open file" option since it supposedly maps the path to the source files. Although I am getting an error saying In order for Live Preview to connect, Chrome needs to be relaunched with remote debugging enabled.
I have read else where that Chrome, by default, does not need to be relaunched for that change and that Brackets force this flag by itself.
I have tried reinstalling Brackets, launching with another project and searched all over Chrome for this flag and did not find any thing.
Any tips?
This page shows you how to instal remote debugging! It's a Chrome dev tool. It's geared towards android apps for whatever reason, but I had that same error, and following the instructions on that page helped me launch the brackets page.
If that doesn't work, here are some troubleshooting tips that have helped me out with live preview:
1) Make sure your filename has a .html at the end
2) Use different browser (I've found chrome to be a bit finicky with brackets)
3) Make a different blank file, launch that, then launch the file
Open the folder, not the file, and then select the file.
I've been uploading files to my site successfully up until now. Unfortunately I've been encountering this inexplicable error.
File and edits that show up in the files in my ftp server, are not showing up on my website.
What's happening!
First, double check that you are naming the new/updated files exactly as they are named in the code for your site. It's possible that you are adding files to the server but your current code is linking to pages or documents with the previous names/spellings, not your new files. Second, are you using a client such as FileZilla to upload these files to the ftp server? If so, be sure to check that you are transferring the local files in the queue to the server after they have been added. Additionally, you could try clearing your browser history. Perhaps your browser is using an outdated, cached version of your site.
Is there a better way to clear my cache?
Yah, most easy way is to use CTRL + F5 combination.
This works in most cases and order browser to reload CURRENT page, not from cach, but from the Internet