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Showing posts from February, 2010

[ OFF TOPIC ] Wet iPhone

Few days ago I have been driving my motorcycle back from work to my home, there was at the time an unexpected pouring rain, needless to say I was wet to my bones When I have arrived home I saw that my iPhone suffered a wet shower, I didn’t know if it damaged my iPhone as it was functioning, so I went to sleep. the next day I tried to open my phone and my precious iPhone refused to function properly, the screen was really dark, I started to cry (not really) then I went to my friend to search for a solution, I saw that someone had saved his blackberry using a bawl of rice, I was skeptic and started to plan the funeral but I have inserted my precious to a bawl of rice (Persian rice), then after almost 2 nights I have opened my iPhone and like magic it started speaking to me again.conclusion: driving in motorcycle in the rain can damage your iPhone!A bawl off rice can be more then a Chinese side dish

[ OFF TOPIC ] VMWARE ESX Clone

Ok, I wish to share with you a tool I created and is helping me in my day to day work. for thouse of you that are using ESX or ESXi (especialy the ESXi as it is free) without the Virtual Center you probebly noticed that there is no clone option, now it is no problem for us tech people to overcome this problem, but some times we are lazy (dont tell that to anyone).I have done a simple shell script that run under the ESX or ESXi console (in the ESXi there is the unsupported console) please noice as I written it very fast and for my use it has almost no tolerance for user error so play with care. Get it here

TCP Over Satellite communications

First I would like to say it has been a very long time since my last article, but now I am in the mode for writing so I would like to share my expireance with TCP and Satellite Communication challanges. I am working at Expand Networks and one of our advantages is in optimizing TCP communication in challanging enviorments such as Satellite, so what is so challanging you ask?? The Satellites we use for communication are up in the sky ~35000 kilometer away from ground also called GEO Sat Communication between ground station to the Satellite easly impacted from enviorment (clouds, rain, snow, solar events...)Satellite is a shared resourceAll the Satellite set a big challange in TCP communication, one of the main is RTT (round trip time), the other is packet loss due to channel error's the satellite may encounter.To overcome this challanges we use some of the avilable TCP enhancments avilable such as: proxying the TCP session and in the session over the satelite increasing Window Siz…