Composer freezing when installing symfony vendors - symfony

Question

I'm trying to install Symfony 2. I get the same issue of I download the archive without vendors and if I try to install via curl.
Running OSX/MAMP setup.
➜ composer install
Loading composer repositories with package information
Installing dependencies (including require-dev)
- Installing symfony/icu (v1.0.0)
Downloading: connection...^C
➜ composer install -vvv
Downloading composer.json
Loading composer repositories with package information
Downloading https://packagist.org/packages.json
Writing /Users/alexlongshaw/.composer/cache/repo/https---packagist.org/packages.json into cache
Downloading https://packagist.org/p/provider-active$fa1339d67d333d9449a21f7a2c80888f2c7a02dbb4d3e6b11a9dd5855df3f537.json
....
Downloading http://packagist.org/p/symfony/class-loader$962a39a1da8588e7f97e22517580a460d5349699d5ccb967167c2a1e9802ce50.json
Reading /Users/alexlongshaw/.composer/cache/repo/https---packagist.org/provider-symfony$class-loader.json from cache
zlib_decode(): data error
http://packagist.org could not be fully loaded, package information was loaded from the local cache and may be out of date
Downloading http://packagist.org/p/symfony/config$eec66e956c41b0728a7fc4f40b95a116bc469f8583c2602b14af3d00f36711fc.json
Writing /Users/alexlongshaw/.composer/cache/repo/https---packagist.org/provider-symfony$config.json into cache
Reading /Users/alexlongshaw/.composer/cache/repo/https---packagist.org/provider-phpoption$phpoption.json from cache
- Installing symfony/icu (v1.0.0)
Downloading https://api.github.com/repos/symfony/Icu/zipball/v1.0.0
Downloading: connection...
As you can see below, if I do composer update I get a similar problem.
➜ composer update
Loading composer repositories with package information
Updating dependencies (including require-dev)
zlib_decode(): data error
http://packagist.org could not be fully loaded, package information was loaded from the local cache and may be out of date
- Installing symfony/icu (v1.0.0)
Downloading: connection...
Any suggestions on how to get past this? It works fine for me on an Ubuntu VM so I presume it is something to do with the setup.
Composer.json
{
"name": "symfony/framework-standard-edition",
"license": "MIT",
"type": "project",
"description": "The \"Symfony Standard Edition\" distribution",
"autoload": {
"psr-0": { "": "src/" }
},
"require": {
"php": ">=5.3.3",
"symfony/symfony": "2.3.*",
"doctrine/orm": ">=2.2.3,<2.4-dev",
"doctrine/doctrine-bundle": "1.2.*",
"twig/extensions": "1.0.*",
"symfony/assetic-bundle": "2.3.*",
"symfony/swiftmailer-bundle": "2.3.*",
"symfony/monolog-bundle": "2.3.*",
"sensio/distribution-bundle": "2.3.*",
"sensio/framework-extra-bundle": "2.3.*",
"sensio/generator-bundle": "2.3.*",
"incenteev/composer-parameter-handler": "~2.0"
},
"scripts": {
"post-install-cmd": [
"Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile"
],
"post-update-cmd": [
"Incenteev\\ParameterHandler\\ScriptHandler::buildParameters",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::buildBootstrap",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::clearCache",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installAssets",
"Sensio\\Bundle\\DistributionBundle\\Composer\\ScriptHandler::installRequirementsFile"
]
},
"config": {
"bin-dir": "bin"
},
"minimum-stability": "stable",
"extra": {
"symfony-app-dir": "app",
"symfony-web-dir": "web",
"incenteev-parameters": {
"file": "app/config/parameters.yml"
},
"branch-alias": {
"dev-master": "2.3-dev"
}
}
}

Answer 1

zlib extension enabled?
check your phpinfo if zlib ( which provides zlib_decode ) is enabled or run
php -m
if your php cli uses a different php.ini
cache problem?
[...] package information was loaded from the local cache and may be out of date
Delete composer's cache folder being...
/Users/alexlongshaw/.composer/cache/
... in your case to prevent updating from cache only and see if a general connection exists.
proxy?
make sure you don't have a proxy set via environment-variables
https_proxy
http_proxy
HTTPS_PROXY
HTTP_PROXY
common problems
composer has built-in capabability of identifying some common problems
composer diagnose

Answer 2

This turned out to be network related. Didn't work on either connection (Broadband or 3G) at home but at work there were no problems