I am trying to set up Squid on Debian and am getting a connection refused error:

squidclient http://www.apple.com/ > test
client: ERROR: Cannot connect to 127.0.0.1:3128: Connection refused

Here is my config:

visible_hostname none

cache_effective_user proxy
cache_effective_group proxy

cache_dir ufs /var/spool/squid 2048 16 256
cache_mem 512 MB

cache_access_log /var/log/squid/access.log

emulate_httpd_log on

strip_query_terms off
read_ahead_gap 128 Kb

collapsed_forwarding on
refresh_stale_hit 30 seconds

retry_on_error on

maximum_object_size_in_memory 1 MB

acl all src 0.0.0.0/0.0.0.0
acl purgehosts src 127.0.0.1/255.255.255.255

# Caching static objects in __data is important.
# Without that, apache processes sit around spooling static objects.
acl QUERY urlpath_regex /cgi-bin/ /_edit /_admin /_login /_nocache /_recache /__lib /__fudge
acl PURGE method PURGE
acl POST method POST

cache deny QUERY
cache deny POST

http_access allow PURGE purgehosts
http_access deny PURGE
http_access allow all

http_port 127.0.0.1:80
http_port 50.56.206.139:80
cache_peer 127.0.0.1 parent 80 0 originserver no-query no-digest default

redirect_rewrites_host_header off

read_ahead_gap 128 Kb

shutdown_lifetime 5 seconds

Any ideas why this is happening? What have I missed?