connectproxy

#!/bin/sh
# Use socat to proxy any protocol through an HTTP CONNECT firewall.
# Useful if you are trying to SSH into a remote server or clone git:// from inside a company.
#
# Requires that the proxy allows CONNECT to the port specified
# in this scripts arguments (e.g. git: 9418, SSH: 22, etc).
#
# Save this file as connectproxy somewhere in your path (e.g., ~/bin) and then run
#   chmod +x connectproxy
#   git config --global core.gitproxy connectproxy
#
# Or put the following in your ~/.ssh/config file:
#   Host *
#       ProxyCommand connectproxy %h %p
#
# More details at https://gist.github.com/wheelerlaw/a28c7461d9070a9d746b185aefaef05b

# Configuration. Pulls proxy information from the http_proxy environment variable.
proxy_host=`echo $http_proxy | sed -e "s/[^/]*\/\/\([^@]*@\)\?\([^:/]*\).*/\2/"`
proxy_port=`echo $http_proxy | sed -e "s/[^/]*\/\/\([^@]*@\)\?\([^:/]*\)\(:\([0-9]\{1,5\}\)\)\?.*/\4/"`
dest_host=$1
dest_port=$2

exec socat STDIO PROXY:$proxy_host:$dest_host:$dest_port,proxyport=$proxy_port