Build a simple proxy

Question

Make the shortest proxy server.

Input/Output Specifications

Client:

• Input: a port number (32-bit integer) (,) or (space) a url (see test cases)
• Output: html source of the url

Server:

• Input: port to listen to (32-bit integer)
• Output: REC when input is received from the client, OK when finished sending the html source to the client.

Rules

• You may make either a complete program or functions in an interpreted language.
• Input is taken through stdin or given as a arguments.
• Your code has to work for the given test cases only (more is optional, less is invalid).
• The client output has to be the same as with what you get when you "view source" from a browser.
• The server may exit after each handled request (i.e does not have to be persistent/daemon)
• (edit) Any other input/output than what specified, is forbidden.

Test cases (client inputs)

1. N₁ https://stackoverflow.com/
2. N₂ http://en.wikipedia.org/wiki/Proxy_server
3. N₃ http://stackexchange.com/search?q=code+golf

where N_i are random integers between 1 and 2048.

Answer 1

ZSH - 57 + 42 characters

Server:

s=$(nc -l $1)
echo REC
curl -s $s|nc 127.0.0.1 $1
echo OK

Client:

echo $2|nc 127.0.0.1 $1
echo "$(nc -l $1)"

Usage:

sudo zsh server.zsh 123

sudo zsh client.zsh 123 http://stackoverflow.com/
sudo zsh client.zsh 123 http://en.wikipedia.org/wiki/Proxy_server
sudo zsh client.zsh 123 "http://stackexchange.com/search?q=code+golf"