I'm trying to install Laravel on my computer with Composer. So I did install Composer well.

And now I run the command line:

composer create-project laravel/laravel demo --prefer-dist

But i always have this error:

[Composer\Downloader\TransportException] The    "http://packagist.org/p/laravel/laravel$43a87aca57a4c34246b77034dd42057 3201ad96143b5c65bb87611e6d808d872.json" file could not be downloaded: send of 103 bytes failed with errno=10053 Une connexion ?tablie a ?t? abandonn?e par un logiciel de votre ordinateur h?te. send of 21 bytes failed with errno=10053 Une connexion ?tablie a ?t? abandonn?e par un logiciel de votre ordinateur h?te. send of 114 bytes failed with errno=10053 Une connexion ?tablie a ?t? aband onn?e par un logiciel de votre ordinateur h?te. send of 2 bytes failed with errno=10053 Une connexion ?tablie a ?t? abandon n?e par un logiciel de votre ordinateur h?te. send of 2 bytes failed with errno=10053 Une connexion ?    tablie a ?t? abandon n?e par un logiciel de votre ordinateur h?te. failed to open stream: HTTP request failed!
install [--prefer-source] [--prefer-dist] [--dry-run] [--dev] [--no-dev] [--no-p lugins] [--no-custom-installers] [--no-scripts] [--no-progress] [-v|vv|vvv|--ver bose] [-o|--optimize-autoloader] [packages1] ... [packagesN]    

I googled it, but didn't find an answer. I'm at home and don't have proxy who stop me.

I tried to update composer. Here the message:

You are already using composer version 1e27ff5e22df81e3cd0cd36e5fdd4a3c5a031f4a. 

Apparently I already have the last version of composer. I also tried running composer global require, but still have the same error message. I don't know what to do?

Do you have an idea why I have this problem?

Thanks