Saturday, 8 August 2015

Old encryption used in academic websites

Two of the premiere educational institutions of Europe are using very old SSL ciphers. I disallowed some old ciphers in Firefox and the sites started failing.




Wednesday, 5 August 2015

HTML5 video in YouTube

After Firefox blacklisting all versions of Flash, YouTube started annoying me by asking to enable the plugin for the same. So, I decided to try HTML5 video. So, I requested for it. However, I was only getting 360p videos. After reading a bit about it, I found that I had to enable the following options in about:config page of Firefox.
media.mediasource.enabled
media.mediasource.mp4.enabled
media.mediasource.webm.enabled
media.fragmented-mp4.exposed
media.fragmented-mp4.ffmpeg.enabled
Also, to get H.264 codec, I had to install gst-libav package. That solved the issue and I can get all resolution options after that.

Tuesday, 4 August 2015

Ghostery messing up site

With Ghostery turned off.

When Ghostery is turned on.
I tried turning AdBlock Plus on and off but it does not impact the behaviour.

Monday, 27 July 2015

WDFME.exe using up resources

Recently, I found CPU usage stagnating at 100%. Task manager showed that aggregated CPU usage of all my processes consumed was much less than that. Check processes owned by all users, I found WDFME.exe consuming CPU heavily. It seemed quite unnecessary as my hard disk is of Seagate and the "WD" in the name suggested "Western Digital". So, I killed it. It is essentially the software that comes along with Western digital external hard drives. As it turns out, it is not necessary and it a known resource hog.

Wednesday, 22 July 2015

Concatenating wide character strings

Today I was looking at concatenating multiple wide character strings. I was dealing with PWSTRs. As it turns out, I needed to use wstring to do it. The following code illustrates the method.

std::wstring mywstring(mystring);
std::wstring concatted_stdstr = L"hello " + mywstring + L" blah";
LPWSTR concatenated = concatted_stdstr.c_str();

However, the above gives us a read-only value for the concatenated string. We can use wcsdup() to get a writeable copy. Otherwise, we can cast the read-only string to a writeable one as follows.

PWSTR value = const_cast (concatenated);

Monday, 6 July 2015

Failed optimization probably

Uber drives are taking a longer route because of some misbehaving optimization in Google maps it seems. When a cab is booked near the main gate of Pearl Village (as shown below) the route shown to the driver is optimised one. However, when a booking is done from the far end of the society, the cabbie is shown a rather long route. A part of this way is actually a dirt road. Uber should consider feedback from its drivers regarding such cases.

Thursday, 2 July 2015

HolidayIQ share feature broken

The HolidayIQ app did not have share facility before so you could only read their blogs when you get a push notification but not share it with somebody. Recently, I was glad to see the share feature in their app. However, when I tried using it by sharing on WhatsApp, it seems they messed up again. The shared URL is a shortened URL so the problem is not quite apparent on first sight but when a person opens the URL in a browser on a phone that does not have the app, the URL does not work with a message that the URL was not understood (This message was from Firefox. Other browsers will have similar issues.). The problem is that the URL specifies incorrect protocol. Instead of http:// the shortened URL expands to one starting with holiday:// With phones that have the app, this URL is opened in the HolidayIQ app and causes no issues. However, I think they should use a http:// URL while sharing.

Monday, 29 June 2015

Idle windows isn't really idle

My laptop running Windows 7 using using 50% CPU when it is idle. I don't know why but this allows me very less resources to run other programs.
No programs running.
Any suggestions are welcome.

Monday, 27 April 2015

Finding remote URL of a folder under git

I was trying to recover an old codebase. I could see that it had two remotes one of which was now rejecting pushes. So, I figured the remote must have changed. To verify, I needed to see how to find out the remote URL. I found there are three ways of doing it as follows:
  1. git remote show remote_name # this failed for me as the remote URL was unavailable
  2. git config --get remote.heroku.url # this solved my purpose
  3. git remote -v # simplest of all to remember