In a nutshell - the question I'm asking is, how do I make a socket
conenction go via a proxy server ?
All our internet traffic has to go through a proxy-server at location
'dav-serv:8080' and I need to make a socket connection through it.
The reason (with code example) is as follows :
I am hacking "Tiny HTTP Proxy" by SUZUKI Hisao to make an http proxy
that modifies URLs. I haven't got very far - having started from zero
knowledge of the 'hyper text transfer protocol'.
It looks like the Tiny HTTP Proxy (using BaseHTTPServer as it's
foundation) intercepts all requests to local addresses and then
re-implements the request (whether it is CONNECT, GET, PUT or
whatever). It logs everything that goes through it - I will simply
edit it to amend the URL that is being asked for.
It looks like the CONNECT and GET requests are just implemented using
simple socket commands. (I say simple because there isn't a lot of
code - I'm not familiar with the actual behaviour of sockets, but it
doesn't look too complicated).
What I need to do is rewrite the soc.connect(hos t_port) line in the
following example so that it connects *via* my proxy-server. (which it
doesn't by default).
I think the current format of host_port is a tuple : (host_domain,
port_no)
Below is a summary of the GET command (I've inlined all the method
calls - this example starts from the do_GET method) :
soc = socket.socket(s ocket.AF_INET, socket.SOCK_STR EAM)
soc.connect(hos t_port)
soc.send("%s %s %s\r\n" % (
self.command,
urlparse.urlunp arse(('', '', path, params, query, '')),
self.request_ve rsion))
self.headers['Connection'] = 'close'
del self.headers['Proxy-Connection']
for key_val in self.headers.it ems():
soc.send("%s: %s\r\n" % key_val)
soc.send("\r\n" )
max_idling=20 # this is really
part of a self._read_writ e method
iw = [self.connection , soc]
ow = []
count = 0
while 1:
count += 1
(ins, _, exs) = select.select(i w, ow, iw, 3)
if exs: break
if ins:
for i in ins:
if i is soc:
out = self.connection
else:
out = soc
data = i.recv(8192)
if data:
out.send(data)
count = 0
else:
print "\t" "idle", count
if count == max_idling: break
print "\t" "bye"
soc.close()
self.connection .close()
Regards,
Fuzzy
conenction go via a proxy server ?
All our internet traffic has to go through a proxy-server at location
'dav-serv:8080' and I need to make a socket connection through it.
The reason (with code example) is as follows :
I am hacking "Tiny HTTP Proxy" by SUZUKI Hisao to make an http proxy
that modifies URLs. I haven't got very far - having started from zero
knowledge of the 'hyper text transfer protocol'.
It looks like the Tiny HTTP Proxy (using BaseHTTPServer as it's
foundation) intercepts all requests to local addresses and then
re-implements the request (whether it is CONNECT, GET, PUT or
whatever). It logs everything that goes through it - I will simply
edit it to amend the URL that is being asked for.
It looks like the CONNECT and GET requests are just implemented using
simple socket commands. (I say simple because there isn't a lot of
code - I'm not familiar with the actual behaviour of sockets, but it
doesn't look too complicated).
What I need to do is rewrite the soc.connect(hos t_port) line in the
following example so that it connects *via* my proxy-server. (which it
doesn't by default).
I think the current format of host_port is a tuple : (host_domain,
port_no)
Below is a summary of the GET command (I've inlined all the method
calls - this example starts from the do_GET method) :
soc = socket.socket(s ocket.AF_INET, socket.SOCK_STR EAM)
soc.connect(hos t_port)
soc.send("%s %s %s\r\n" % (
self.command,
urlparse.urlunp arse(('', '', path, params, query, '')),
self.request_ve rsion))
self.headers['Connection'] = 'close'
del self.headers['Proxy-Connection']
for key_val in self.headers.it ems():
soc.send("%s: %s\r\n" % key_val)
soc.send("\r\n" )
max_idling=20 # this is really
part of a self._read_writ e method
iw = [self.connection , soc]
ow = []
count = 0
while 1:
count += 1
(ins, _, exs) = select.select(i w, ow, iw, 3)
if exs: break
if ins:
for i in ins:
if i is soc:
out = self.connection
else:
out = soc
data = i.recv(8192)
if data:
out.send(data)
count = 0
else:
print "\t" "idle", count
if count == max_idling: break
print "\t" "bye"
soc.close()
self.connection .close()
Regards,
Fuzzy
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