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{-# LANGUAGE OverloadedStrings #-}
import Network.Socks5
import Network.Socket hiding (recv)
import Network.Socket.ByteString
import Network.BSD
import Network
import Data.ByteString.Char8 ()
import qualified Data.ByteString.Char8 as BC
import System.IO (hClose, hFlush)
import System.Environment (getArgs)
main = do
args <- getArgs
let serverName = "localhost"
let serverPort = 1080
let destinationName = case args of
[] -> "www.google.com"
(x:_) -> x
-- socks server is expected to be running on localhost port 1080
he <- getHostByName serverName
let socksServerAddr = SockAddrInet serverPort (head $ hostAddresses he)
example1 socksServerAddr destinationName
example2 socksServerAddr destinationName
example3 serverName serverPort destinationName 80
where
-- connect to @destName on port 80 through the socks server
-- www.google.com get resolve on the client here and then the sockaddr is
-- passed to socksConnectAddr
example1 socksServerAddr destName = do
socket <- socket AF_INET Stream defaultProtocol
gHost <- getHostByName destName
let destinationAddr = SockAddrInet 80 (head $ hostAddresses gHost)
socksConnectAddr socket socksServerAddr destinationAddr
sendAll socket "GET / HTTP/1.0\r\n\r\n"
recv socket 4096 >>= putStrLn . show
sClose socket
-- connect to @destName on port 80 through the socks server
-- the server is doing the resolution itself
example2 socksServerAddr destName = do
socket <- socket AF_INET Stream defaultProtocol
socksConnectName socket socksServerAddr destName 80
sendAll socket "GET / HTTP/1.0\r\n\r\n"
recv socket 4096 >>= putStrLn . show
sClose socket
example3 sname sport dname dport = do
handle <- socksConnectTo sname (PortNumber sport) dname (PortNumber dport)
BC.hPut handle "GET / HTTP/1.0\r\n\r\n"
hFlush handle
BC.hGet handle 1024 >>= putStrLn . show
hClose handle
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