After thinking about this for 2 weeks, I have to ask this question.
I've created a NW.js app that works smoothly and nice on 7 different laptops and PCs. The app shows html videos and contains a bunch of javascripts, I've got deloped since 2 years. Alls this works fine on every laptop/PC.
Here comes the problem:
On one laptop the app works, too, but the app isn't able neither to show HTML frame contents nor to execute js scripts from a specific web domain. This only occurs with a specific domain (that I'm the owner of).
The strange thing is, that this happens only on one laptop.
The laptop uses the same internet connection as some other devices. I reinstalled the app, deleted all subfolders from the app folder, but the error is back. In the frame I see the silly message, that the website is down or moved.
You likely have a system-wide proxy configured or possibly some AV software installed on that laptop is blocking that site. Attempt to access the same URL through another browser (Chrome, Edge, Firefox, etc.) to confirm.
Could be related to your hosts file.
C:\Windows\System32\drivers\etc\hosts
That is a plain text file without an extension. You can put URL's or IP addresses in it and it will block any access to them globally on the computer.
Though Sysrage is probably right, it's more likely that you just have some AV/firewall/security software blocking stuff it shouldn't (happens all the time, they can be "over protective" sometimes)
If it is something related to your NW.js install, and it isn't happening on other machines (so you know your app code is correct), then you could try deleting the app data folder for you app. To find it's location on the computer run console.log(nw.App.dataPath). It should be something like:
C:\Users\YOUR USER NAME\AppData\Local\YOUR APP NAME
You can just delete the whole folder (make sure your app isn't running first). Then the next time you open your app it will recreate that folder (it's a chromium thing). Things like saved passwords or dev tool customization or spellcheck dictionary modifications are stored in there. So maybe there's just something funky that needs cleared out.
Related
I encounter the problem when I try to access the website of my software engineering uni course. On my desktop (Win10), phone and tablet (both Android) I receive a "SSL_ERROR_NO_CYPHER_OVERLAP"-Error when trying to access the site.
The error appears regardless of browser, it seems to be system-wide.
Interestingly enough I can access the site on my laptop (Win10 + Manjaro) and could also access it on my desktops Manjaro partition. I could also access it on my phone in the uni-network - but not using mobile data.
However I am not sure, whether mobile data is to blame, as I logged in with my firefox account before receiving the error. Naturally I assumed it may have something to do with my firefox-preferences, but i am using the same account on my Manjaro Systems as well as the Win10 partition of my laptop. Besides me, none of my friends, except one have this problem.
I ran the URL through multiple different SSL-Checkers and every one of them encountered problems regarding the SSL-certificates. As the problem occures in different networks I can also rule out some router-settings of my home-network being the cause. Have you encountered such an error before and is there anything I can do on my own or is this an issue I should take up with my course-instructor and ask him to take a look at his server?
As it turns out the browser plugin "HTTPS Everywhere" was causing the problem.
The error occured in different browsers without the plugin because I copy-pasted the https URL. The issue appeared on my phone because of the shared browser history, which autocompleted the URL to the https version. The plugin is not installed on my Manjaro's Firefox, which is a bit strange as I though it would be shared.
Additionally, on Manjaro, Firefox does not suggest the https version of the site for auto-completion - maybe it favors sites opened on the specific device over sites opened on different devices. Either way, it works now.
I'm using WKHtmlToPdf to generate some docs here at work, in internal applications, for over one and half year without any problem. Some applications are coded in C++, some in AutoIt3, and today, after restarting all the computers due to external reasons (power generator would be tested), wkhtmltopdf stopped working on all machines at my company.
I can't even run it from command line. Whether I try to convert a webpage or a local HTML file, it always hangs on 10%. All our machines are Windows 8 32 bits and runs their own install (the applications aren't running under a network share).
I tried downloading wkhtmltopdf again from the website, installing it, etc, but nothing worked. I also tried adding --disable-javascript option, which also didn't work. Cleaning %TEMP% folder did not help too.
I never faced anything like this. All the machines were restarted normally, going to start menu, etc. And it does not look like a network issue, since I'm accessing internet to write this, and we are a small company, we use a standard Wi-Fi router, just like your house. Nothing was changed, no file deleted, no Windows update, no network settings... just a restart. I saw some guys facing the same problem when trying to run wkhtmltopdf from PHP, but in this case, I have this problem even by running it from DOS, as anyone would do.
wkhtmltoimage is working fine. Just wkhtmltopdf stopped working.
Screenshot
In my case, wkhtmltopdf was hanging on files locally stored after the progress counter had made an initial jump to the percentage corresponding to 1 page. It turned out that I had an http_proxy variable set to some unaccessible proxy server. Clearing this environment variable solved the issue.
At present, I start up red5 in linux command line ./red5.sh and it runs the script. Then I go to http://localhost:5080 demos page to set up my camera and audio input and all works fine in testing the stream both on demo page and in swf of my webpage.
Question is, do I need to include some java and/or action script for the swf player to
bypass the red5 demo page so I can directly connect my input and stream in the code of the page? Also so only logged in webpage viewers can connect?
Overall wondering if there is a way of hiding the server stream from anyone not logged in to view it on my site? I understand in webapps folder somewhere there is the hosts list of IP but it would be impossible to know the IP of the viewers as opposed to unwanted viewers or bandwidth stealers.
I am trying to set up a site for poetry readings and make it so readers can record live to my server and then logged in viewers can view from my website. I am trying to figure out whether I must have that red5 page open and if that doesn't pose some kind of risk.
Found my own way of doing this just by removing and renaming files and folders.
If you go to usr/local/red5/webapps here lies all the directories for viewing when you go to default port 5080 so I simply installed the applications I needed and then took everything out of there except those applications I wanted and needed to run. I took out all and placed it in a folder in /var directory named it red5_movedstuff in case I want access to further applications later on.Then I renamed the applications I am using in webapps folder and kept admin folder to access them but I renamed my applications and had to importantly rename also in WEB-INF for each application name change.
Now if someone goes to myip:5080 they get a blank page and by changing names of applications I've hidden my directories beyond that including list of streams.
Okay so I want to make an application that launches other applications. However, the goal here is to make the app "portable" in that I can go from one windows desktop to another while using the same application from a usb drive. So here is a different rundown of what I mean:
I have aplication X. I use it on machine 1 and I want to use it on machine 2. However, machine 2 is my buddy's and he does not want me installing things on it. So, I take all the files that the installer made on my system, and put them into folders. App X put files in the windows folder that it expects when it is launched. If I merely run the the app and it looks in the windows dir it will not find the files. I do not have/want the ability to put files in the windows dir. I want to tell the app to look in folder a for files in folder b instead of where it would normally look. I could then use this program on any machine without having to modify the machine in any way.
Is this doable? If so what is it called so I can look it up?
EDIT: the win dir was an example. I would like the app to be self contained in a folder on the thumb drive. I want to redirect the where the app looks for files to a folder I specify.
This can be done, but how easily depends entirely on the program that you are launching.
The sorts of things that applications will do are:
Just run happily being executed anywhere (no dependencies). These are very easy!
Require some environment variables to be set up. This is easy to do - you can launch a new process with a modified environment if you wish.
Read files from disk. Usually when loading things like .dlls, applications will search on the PATH for the dlls, so they can be copied into the application folder (next to the .exe) and it will run happily on any system. However, in some cases applications will use fixed (or at least, less flexible) paths so that they will be harder to launch successfully.
Read registry settings. This is trickier. You need to know what state is required by the application, have your launcher record the old registry state, change it and run the application, then wait for application exit to restore the original state. This has to be bullet-proof to avoid corruption of the user's registry.
Ultimately you'll need to investigate, for each app you want to launch, just what it needs to run.
If the apps are commercial, then be careful that you are not breaking any licensing (EULA) terms by running them in this way.
Another alternative would be to set up a virtual PC image and simply execute that on the host PC so there is no need to worry about any special cases for each application. Depending on the VPC software you have available you may need to install software on the host PC to allow a virtual PC session to be run though, which may defeat the purpose/intent.
I think the system you describe is U3 (more info at http://en.wikipedia.org/wiki/U3). It requires the application to follow the U3 protocol, but if the application does, then it can be run off of a U3 flash drive without any install or admin permissions required on the host machine.
It's a proprietary technology, and supported by only a few vendors that I've seen.
If you really want portability and power, consider VMWare Player, and carry and entire machine, customized to your needs, on the flash drive. Of course, your friend would probably have to allow you to install VMWare Player.
We have an Adobe AIR application which could be possibly downloaded from multiple domains. And when it's run, it should connect back to the site it was downloaded from to get data to show to the user.
So far we have a separate application build for each domain with a site URL hardcoded into it. And I wonder is there a way for AIR application to find out at runtime the URL (or at least domain) from which it was downloaded?
What we would like to have is a single downloadable binary served from all different domains, which still can know it's origin URL.
There's no function to retrieve such information, it would just make no sense if you think about it.
The most stable way is to include an external configuration file into the package.
Note that you can use ANT to automate this process for this final deployment.
There's no direct way to do it.
Here are some options which come in mind:
Build different versions for each site (this could be automated)
Let user choose the site at first launch
Try to guess it using using whatever resources you have (timezone, language, etc)
How should this work? The only solution i see (independent from AIR) is that you deliver an extra (properties) file with the application, containing the URL downloaded from. So you dont need to build a separate app for each domain, but only package a different domain-file with it. The app then reads this file and executes some context sensitive stuff.
I am trying to address the exact same issue right now.
It looks like you can modify the install badge to pass parameters to the air app.
From what I gather the values are only passed down on install or launch-from-badge.
Something I plan on researching is that one of the parameters in "AIRBadge.as" is _appURL which is the URL of the page the badge is on. I don't yet know if that value makes it down to the installed AIR app in some way; but it could be a useful property. I'm ultimately hoping that the AIR install process injects that into the application descriptor xml, but I'm not holding my breath.
Check this page out: http://archive.davidtucker.net/2008/01/10/air-tip-5-passing-arguments-to-an-application-on-install/#
When the user downloads, you could store their IP address in your central DB. Then when the app is installed and runs the first time, the app could hit your central DB to match up their IP address with the server they downloaded from.
A cookie with a specific name being stored on a download page, and the AIR app looking for that? Though that might not work for direct downloads. It might also be hard to pull off since knowing the specific browser used to download it would be an issue.