On 31 Aug 2005 06:03:00 -0700, n00m n00m@narod.ru wrote:
import socket, thread host, port = '192.168.0.3', 1434 s1 = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s2 = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s2.connect((host, 1433)) s1.bind((host, port)) s1.listen(1) cn, addr = s1.accept()
def VB_SCRIPT(): while 1: data = cn.recv(4096) if not data: return s2.send(data) print 'VB_SCRIPT:' + data + '\n\n'
def SQL_SERVER(): while 1: data = s2.recv(4096) if not data: return cn.send(data) print 'SQL_SERVER:' + data + '\n\n'
thread.start_new_thread(VB_SCRIPT,()) thread.start_new_thread(SQL_SERVER,())
This is about the same as:
mktap portforward --port 1434 --host 192.168.0.3 --dest_port 1433 twistd -f portforward.tap
You'll find the code behind these two commands here:
http://cvs.twistedmatrix.com/cvs/trunk/twisted/tap/portforward.py?view=markup&rev=13278
and here:
http://cvs.twistedmatrix.com/cvs/trunk/twisted/protocols/portforward.py?view=markup&rev=12914
And of course, the main Twisted site is http://twistedmatrix.com/.
Some differences between portforward.tap and your code include:
portforward.tap will accept multiple connections, rather than just one. portforward.tap won't print out all the bytes it receives (I assume this is just for debugging purposes anyway - if not, a simple modification will cause it to do this). portforward.tap won't non-deterministically drop traffic, since Twisted checks the return value of send() and properly re-transmits anything which has not actually been sent.
Hope this helps,
Jp