Чтобы вспомнить сокеты читаем сначала документацию Python "Socket Programming HOWTO", 17.2, а потом импортированный сюда readme.txt SocksiPy WHAT IS A SOCKS PROXY?
A SOCKS proxy is a proxy server at the TCP level. In other words, it acts as a tunnel, relaying all traffic going through it without modifying it.
A SOCKS proxy is a proxy server at the TCP level. In other words, it acts as a tunnel, relaying all traffic going through it without modifying it.
SocksiPy - A Python SOCKS client module
17.2. socket — Low-level networking interface
17.3. ssl — TLS/SSL wrapper for socket objects
17.6. asyncore — Asynchronous socket handler
17.7. asynchat — Asynchronous socket command/response handler
20.17. SocketServer — A framework for network servers
Socket Programming HOWTO
Sockets and Layers HOWTO Fetch Internet Resources Using urllib2
Today I`m learning "Socket Programming HOWTO" and improve my English
17.2. socket — Low-level networking interface
17.3. ssl — TLS/SSL wrapper for socket objects
17.6. asyncore — Asynchronous socket handler
17.7. asynchat — Asynchronous socket command/response handler
20.17. SocketServer — A framework for network servers
Socket Programming HOWTO
Sockets and Layers HOWTO Fetch Internet Resources Using urllib2
Today I`m learning "Socket Programming HOWTO" and improve my English
Вот библиотека, SocksiPy - A Python SOCKS client module а ниже описание¶
In [1]:
%load http://socksipy.sourceforge.net/readme.txt
In []:
SocksiPy version 1.00
A Python SOCKS module.
(C) 2006 Dan-Haim. All rights reserved.
See LICENSE file for details.
WHAT IS A SOCKS PROXY?
A SOCKS proxy is a proxy server at the TCP level. In other words, it acts as
a tunnel, relaying all traffic going through it without modifying it.
SOCKS proxies can be used to relay traffic using any network protocol that
uses TCP.
WHAT IS SOCKSIPY?
This Python module allows you to create TCP connections through a SOCKS
proxy without any special effort.
PROXY COMPATIBILITY
SocksiPy is compatible with three different types of proxies:
1. SOCKS Version 4 (Socks4), including the Socks4a extension.
2. SOCKS Version 5 (Socks5).
3. HTTP Proxies which support tunneling using the CONNECT method.
SYSTEM REQUIREMENTS
Being written in Python, SocksiPy can run on any platform that has a Python
interpreter and TCP/IP support.
This module has been tested with Python 2.3 and should work with greater versions
just as well.
INSTALLATION
-------------
Simply copy the file "socks.py" to your Python's lib/site-packages directory,
and you're ready to go.
USAGE
------
First load the socks module with the command:
>>> import socks
>>>
The socks module provides a class called "socksocket", which is the base to
all of the module's functionality.
The socksocket object has the same initialization parameters as the normal socket
object to ensure maximal compatibility, however it should be noted that socksocket
will only function with family being AF_INET and type being SOCK_STREAM.
Generally, it is best to initialize the socksocket object with no parameters
>>> s = socks.socksocket()
>>>
The socksocket object has an interface which is very similiar to socket's (in fact
the socksocket class is derived from socket) with a few extra methods.
To select the proxy server you would like to use, use the setproxy method, whose
syntax is:
setproxy(proxytype, addr[, port[, rdns[, username[, password]]]])
Explaination of the parameters:
proxytype - The type of the proxy server. This can be one of three possible
choices: PROXY_TYPE_SOCKS4, PROXY_TYPE_SOCKS5 and PROXY_TYPE_HTTP for Socks4,
Socks5 and HTTP servers respectively.
addr - The IP address or DNS name of the proxy server.
port - The port of the proxy server. Defaults to 1080 for socks and 8080 for http.
rdns - This is a boolean flag than modifies the behavior regarding DNS resolving.
If it is set to True, DNS resolving will be preformed remotely, on the server.
If it is set to False, DNS resolving will be preformed locally. Please note that
setting this to True with Socks4 servers actually use an extension to the protocol,
called Socks4a, which may not be supported on all servers (Socks5 and http servers
always support DNS). The default is True.
username - For Socks5 servers, this allows simple username / password authentication
with the server. For Socks4 servers, this parameter will be sent as the userid.
This parameter is ignored if an HTTP server is being used. If it is not provided,
authentication will not be used (servers may accept unauthentication requests).
password - This parameter is valid only for Socks5 servers and specifies the
respective password for the username provided.
Example of usage:
>>> s.setproxy(socks.PROXY_TYPE_SOCKS5,"socks.example.com")
>>>
After the setproxy method has been called, simply call the connect method with the
traditional parameters to establish a connection through the proxy:
>>> s.connect(("www.sourceforge.net",80))
>>>
Connection will take a bit longer to allow negotiation with the proxy server.
Please note that calling connect without calling setproxy earlier will connect
without a proxy (just like a regular socket).
Errors: Any errors in the connection process will trigger exceptions. The exception
may either be generated by the underlying socket layer or may be custom module
exceptions, whose details follow:
class ProxyError - This is a base exception class. It is not raised directly but
rather all other exception classes raised by this module are derived from it.
This allows an easy way to catch all proxy-related errors.
class GeneralProxyError - When thrown, it indicates a problem which does not fall
into another category. The parameter is a tuple containing an error code and a
description of the error, from the following list:
1 - invalid data - This error means that unexpected data has been received from
the server. The most common reason is that the server specified as the proxy is
not really a Socks4/Socks5/HTTP proxy, or maybe the proxy type specified is wrong.
4 - bad proxy type - This will be raised if the type of the proxy supplied to the
setproxy function was not PROXY_TYPE_SOCKS4/PROXY_TYPE_SOCKS5/PROXY_TYPE_HTTP.
5 - bad input - This will be raised if the connect method is called with bad input
parameters.
class Socks5AuthError - This indicates that the connection through a Socks5 server
failed due to an authentication problem. The parameter is a tuple containing a
code and a description message according to the following list:
1 - authentication is required - This will happen if you use a Socks5 server which
requires authentication without providing a username / password at all.
2 - all offered authentication methods were rejected - This will happen if the proxy
requires a special authentication method which is not supported by this module.
3 - unknown username or invalid password - Self descriptive.
class Socks5Error - This will be raised for Socks5 errors which are not related to
authentication. The parameter is a tuple containing a code and a description of the
error, as given by the server. The possible errors, according to the RFC are:
1 - General SOCKS server failure - If for any reason the proxy server is unable to
fulfill your request (internal server error).
2 - connection not allowed by ruleset - If the address you're trying to connect to
is blacklisted on the server or requires authentication.
3 - Network unreachable - The target could not be contacted. A router on the network
had replied with a destination net unreachable error.
4 - Host unreachable - The target could not be contacted. A router on the network
had replied with a destination host unreachable error.
5 - Connection refused - The target server has actively refused the connection
(the requested port is closed).
6 - TTL expired - The TTL value of the SYN packet from the proxy to the target server
has expired. This usually means that there are network problems causing the packet
to be caught in a router-to-router "ping-pong".
7 - Command not supported - The client has issued an invalid command. When using this
module, this error should not occur.
8 - Address type not supported - The client has provided an invalid address type.
When using this module, this error should not occur.
class Socks4Error - This will be raised for Socks4 errors. The parameter is a tuple
containing a code and a description of the error, as given by the server. The
possible error, according to the specification are:
1 - Request rejected or failed - Will be raised in the event of an failure for any
reason other then the two mentioned next.
2 - request rejected because SOCKS server cannot connect to identd on the client -
The Socks server had tried an ident lookup on your computer and has failed. In this
case you should run an identd server and/or configure your firewall to allow incoming
connections to local port 113 from the remote server.
3 - request rejected because the client program and identd report different user-ids -
The Socks server had performed an ident lookup on your computer and has received a
different userid than the one you have provided. Change your userid (through the
username parameter of the setproxy method) to match and try again.
class HTTPError - This will be raised for HTTP errors. The parameter is a tuple
containing the HTTP status code and the description of the server.
After establishing the connection, the object behaves like a standard socket.
Call the close method to close the connection.
In addition to the socksocket class, an additional function worth mentioning is the
setdefaultproxy function. The parameters are the same as the setproxy method.
This function will set default proxy settings for newly created socksocket objects,
in which the proxy settings haven't been changed via the setproxy method.
This is quite useful if you wish to force 3rd party modules to use a socks proxy,
by overriding the socket object.
For example:
>>> socks.setdefaultproxy(socks.PROXY_TYPE_SOCKS5,"socks.example.com")
>>> socket.socket = socks.socksocket
>>> urllib.urlopen("http://www.sourceforge.net/")
PROBLEMS
---------
If you have any problems using this module, please first refer to the BUGS file
(containing current bugs and issues). If your problem is not mentioned you may
contact the author at the following E-Mail address:
negativeiq@users.sourceforge.net
Please allow some time for your question to be received and handled.
Dan-Haim,
Author.
А вот (socks.py), что у меня в w8¶
In [3]:
%load C:\\Users\\kiss\\Anaconda\\Lib\\site-packages\\socks.py
In []:
"""
SocksiPy - Python SOCKS module.
Version 1.5.0
Copyright 2006 Dan-Haim. All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
1. Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
3. Neither the name of Dan Haim nor the names of his contributors may be used
to endorse or promote products derived from this software without specific
prior written permission.
THIS SOFTWARE IS PROVIDED BY DAN HAIM "AS IS" AND ANY EXPRESS OR IMPLIED
WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
EVENT SHALL DAN HAIM OR HIS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA
OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMANGE.
This module provides a standard socket-like interface for Python
for tunneling connections through SOCKS proxies.
===============================================================================
Minor modifications made by Christopher Gilbert (http://motomastyle.com/)
for use in PyLoris (http://pyloris.sourceforge.net/)
Minor modifications made by Mario Vilas (http://breakingcode.wordpress.com/)
mainly to merge bug fixes found in Sourceforge
Modifications made by Anorov (https://github.com/Anorov)
-Forked and renamed to PySocks
-Fixed issue with HTTP proxy failure checking (same bug that was in the old ___recvall() method)
-Included SocksiPyHandler (sockshandler.py), to be used as a urllib2 handler,
courtesy of e000 (https://github.com/e000): https://gist.github.com/869791#file_socksipyhandler.py
-Re-styled code to make it readable
-Aliased PROXY_TYPE_SOCKS5 -> SOCKS5 etc.
-Improved exception handling and output
-Removed irritating use of sequence indexes, replaced with tuple unpacked variables
-Fixed up Python 3 bytestring handling - chr(0x03).encode() -> b"\x03"
-Other general fixes
-Added clarification that the HTTP proxy connection method only supports CONNECT-style tunneling HTTP proxies
-Various small bug fixes
"""
__version__ = "1.5.0"
import socket
import struct
PROXY_TYPE_SOCKS4 = SOCKS4 = 1
PROXY_TYPE_SOCKS5 = SOCKS5 = 2
PROXY_TYPE_HTTP = HTTP = 3
PRINTABLE_PROXY_TYPES = {SOCKS4: "SOCKS4", SOCKS5: "SOCKS5", HTTP: "HTTP"}
_orgsocket = _orig_socket = socket.socket
class ProxyError(IOError):
"""
socket_err contains original socket.error exception.
"""
def __init__(self, msg, socket_err=None):
self.msg = msg
self.socket_err = socket_err
if socket_err:
self.msg = msg + ": {}".format(socket_err)
def __str__(self):
return self.msg
class GeneralProxyError(ProxyError): pass
class ProxyConnectionError(ProxyError): pass
class SOCKS5AuthError(ProxyError): pass
class SOCKS5Error(ProxyError): pass
class SOCKS4Error(ProxyError): pass
class HTTPError(ProxyError): pass
SOCKS4_ERRORS = { 0x5B: "Request rejected or failed",
0x5C: "Request rejected because SOCKS server cannot connect to identd on the client",
0x5D: "Request rejected because the client program and identd report different user-ids"
}
SOCKS5_ERRORS = { 0x01: "General SOCKS server failure",
0x02: "Connection not allowed by ruleset",
0x03: "Network unreachable",
0x04: "Host unreachable",
0x05: "Connection refused",
0x06: "TTL expired",
0x07: "Command not supported, or protocol error",
0x08: "Address type not supported"
}
DEFAULT_PORTS = { SOCKS4: 1080,
SOCKS5: 1080,
HTTP: 8080
}
def set_default_proxy(proxy_type=None, addr=None, port=None, rdns=True, username=None, password=None):
"""
set_default_proxy(proxy_type, addr[, port[, rdns[, username, password]]])
Sets a default proxy which all further socksocket objects will use,
unless explicitly changed.
"""
socksocket.default_proxy = (proxy_type, addr.encode(), port, rdns,
username.encode() if username else None,
password.encode() if password else None)
setdefaultproxy = set_default_proxy
def get_default_proxy():
"""
Returns the default proxy, set by set_default_proxy.
"""
return socksocket.default_proxy
getdefaultproxy = get_default_proxy
def wrap_module(module):
"""
Attempts to replace a module's socket library with a SOCKS socket. Must set
a default proxy using set_default_proxy(...) first.
This will only work on modules that import socket directly into the namespace;
most of the Python Standard Library falls into this category.
"""
if socksocket.default_proxy:
module.socket.socket = socksocket
else:
raise GeneralProxyError("No default proxy specified")
wrapmodule = wrap_module
def create_connection(dest_pair, proxy_type=None, proxy_addr=None,
proxy_port=None, proxy_username=None,
proxy_password=None, timeout=None):
"""create_connection(dest_pair, **proxy_args) -> socket object
Like socket.create_connection(), but connects to proxy
before returning the socket object.
dest_pair - 2-tuple of (IP/hostname, port).
**proxy_args - Same args passed to socksocket.set_proxy().
timeout - Optional socket timeout value, in seconds.
"""
sock = socksocket()
if isinstance(timeout, (int, float)):
sock.settimeout(timeout)
sock.set_proxy(proxy_type, proxy_addr, proxy_port,
proxy_username, proxy_password)
sock.connect(dest_pair)
return sock
class socksocket(socket.socket):
"""socksocket([family[, type[, proto]]]) -> socket object
Open a SOCKS enabled socket. The parameters are the same as
those of the standard socket init. In order for SOCKS to work,
you must specify family=AF_INET, type=SOCK_STREAM and proto=0.
"""
default_proxy = None
def __init__(self, family=socket.AF_INET, type=socket.SOCK_STREAM, proto=0, _sock=None):
_orig_socket.__init__(self, family, type, proto, _sock)
if self.default_proxy:
self.proxy = self.default_proxy
else:
self.proxy = (None, None, None, None, None, None)
self.proxy_sockname = None
self.proxy_peername = None
self.proxy_negotiators = { SOCKS4: self._negotiate_SOCKS4,
SOCKS5: self._negotiate_SOCKS5,
HTTP: self._negotiate_HTTP
}
def _recvall(self, count):
"""
Receive EXACTLY the number of bytes requested from the socket.
Blocks until the required number of bytes have been received.
"""
data = b""
while len(data) < count:
d = self.recv(count - len(data))
if not d:
raise GeneralProxyError("Connection closed unexpectedly")
data += d
return data
def set_proxy(self, proxy_type=None, addr=None, port=None, rdns=True, username=None, password=None):
"""set_proxy(proxy_type, addr[, port[, rdns[, username[, password]]]])
Sets the proxy to be used.
proxy_type - The type of the proxy to be used. Three types
are supported: PROXY_TYPE_SOCKS4 (including socks4a),
PROXY_TYPE_SOCKS5 and PROXY_TYPE_HTTP
addr - The address of the server (IP or DNS).
port - The port of the server. Defaults to 1080 for SOCKS
servers and 8080 for HTTP proxy servers.
rdns - Should DNS queries be performed on the remote side
(rather than the local side). The default is True.
Note: This has no effect with SOCKS4 servers.
username - Username to authenticate with to the server.
The default is no authentication.
password - Password to authenticate with to the server.
Only relevant when username is also provided.
"""
self.proxy = (proxy_type, addr.encode(), port, rdns,
username.encode() if username else None,
password.encode() if password else None)
setproxy = set_proxy
def get_proxy_sockname(self):
"""
Returns the bound IP address and port number at the proxy.
"""
return self.proxy_sockname
getproxysockname = get_proxy_sockname
def get_proxy_peername(self):
"""
Returns the IP and port number of the proxy.
"""
return _orig_socket.getpeername(self)
getproxypeername = get_proxy_peername
def get_peername(self):
"""
Returns the IP address and port number of the destination
machine (note: get_proxy_peername returns the proxy)
"""
return self.proxy_peername
getpeername = get_peername
def _negotiate_SOCKS5(self, dest_addr, dest_port):
"""
Negotiates a connection through a SOCKS5 server.
"""
proxy_type, addr, port, rdns, username, password = self.proxy
# First we'll send the authentication packages we support.
if username and password:
# The username/password details were supplied to the
# set_proxy method so we support the USERNAME/PASSWORD
# authentication (in addition to the standard none).
self.sendall(b"\x05\x02\x00\x02")
else:
# No username/password were entered, therefore we
# only support connections with no authentication.
self.sendall(b"\x05\x01\x00")
# We'll receive the server's response to determine which
# method was selected
chosen_auth = self._recvall(2)
if chosen_auth[0:1] != b"\x05":
# Note: string[i:i+1] is used because indexing of a bytestring
# via bytestring[i] yields an integer in Python 3
raise GeneralProxyError("SOCKS5 proxy server sent invalid data")
# Check the chosen authentication method
if chosen_auth[1:2] == b"\x02":
# Okay, we need to perform a basic username/password
# authentication.
self.sendall(b"\x01" + chr(len(username)).encode()
+ username
+ chr(len(password)).encode()
+ password)
auth_status = self._recvall(2)
if auth_status[0:1] != b"\x01":
# Bad response
raise GeneralProxyError("SOCKS5 proxy server sent invalid data")
if auth_status[1:2] != b"\x00":
# Authentication failed
raise SOCKS5AuthError("SOCKS5 authentication failed")
# Otherwise, authentication succeeded
# No authentication is required if 0x00
elif chosen_auth[1:2] != b"\x00":
# Reaching here is always bad
if chosen_auth[1:2] == b"\xFF":
raise SOCKS5AuthError("All offered SOCKS5 authentication methods were rejected")
else:
raise GeneralProxyError("SOCKS5 proxy server sent invalid data")
# Now we can request the actual connection
req = b"\x05\x01\x00"
# If the given destination address is an IP address, we'll
# use the IPv4 address request even if remote resolving was specified.
try:
addr_bytes = socket.inet_aton(dest_addr)
req += b"\x01" + addr_bytes
except socket.error:
# Well it's not an IP number, so it's probably a DNS name.
if rdns:
# Resolve remotely
addr_bytes = None
req += b"\x03" + chr(len(dest_addr)).encode() + dest_addr.encode()
else:
# Resolve locally
addr_bytes = socket.inet_aton(socket.gethostbyname(dest_addr))
req += b"\x01" + addr_bytes
req += struct.pack(">H", dest_port)
self.sendall(req)
# Get the response
resp = self._recvall(4)
if resp[0:1] != b"\x05":
raise GeneralProxyError("SOCKS5 proxy server sent invalid data")
status = ord(resp[1:2])
if status != 0x00:
# Connection failed: server returned an error
error = SOCKS5_ERRORS.get(status, "Unknown error")
raise SOCKS5Error("{:#04x}: {}".format(status, error))
# Get the bound address/port
if resp[3:4] == b"\x01":
bound_addr = self._recvall(4)
elif resp[3:4] == b"\x03":
resp += self.recv(1)
bound_addr = self._recvall(ord(resp[4:5]))
else:
raise GeneralProxyError("SOCKS5 proxy server sent invalid data")
bound_port = struct.unpack(">H", self._recvall(2))[0]
self.proxy_sockname = bound_addr, bound_port
if addr_bytes:
self.proxy_peername = socket.inet_ntoa(addr_bytes), dest_port
else:
self.proxy_peername = dest_addr, dest_port
def _negotiate_SOCKS4(self, dest_addr, dest_port):
"""
Negotiates a connection through a SOCKS4 server.
"""
proxy_type, addr, port, rdns, username, password = self.proxy
# Check if the destination address provided is an IP address
remote_resolve = False
try:
addr_bytes = socket.inet_aton(dest_addr)
except socket.error:
# It's a DNS name. Check where it should be resolved.
if rdns:
addr_bytes = b"\x00\x00\x00\x01"
remote_resolve = True
else:
addr_bytes = socket.inet_aton(socket.gethostbyname(dest_addr))
# Construct the request packet
req = struct.pack(">BBH", 0x04, 0x01, dest_port) + addr_bytes
# The username parameter is considered userid for SOCKS4
if username:
req += username
req += b"\x00"
# DNS name if remote resolving is required
# NOTE: This is actually an extension to the SOCKS4 protocol
# called SOCKS4A and may not be supported in all cases.
if remote_resolve:
req += dest_addr.encode() + b"\x00"
self.sendall(req)
# Get the response from the server
resp = self._recvall(8)
if resp[0:1] != b"\x00":
# Bad data
raise GeneralProxyError("SOCKS4 proxy server sent invalid data")
status = ord(resp[1:2])
if status != 0x5A:
# Connection failed: server returned an error
error = SOCKS4_ERRORS.get(status, "Unknown error")
raise SOCKS4Error("{:#04x}: {}".format(status, error))
# Get the bound address/port
self.proxy_sockname = (socket.inet_ntoa(resp[4:]), struct.unpack(">H", resp[2:4])[0])
if remote_resolve:
self.proxy_peername = socket.inet_ntoa(addr_bytes), dest_port
else:
self.proxy_peername = dest_addr, dest_port
def _negotiate_HTTP(self, dest_addr, dest_port):
"""
Negotiates a connection through an HTTP server.
NOTE: This currently only supports HTTP CONNECT-style proxies.
"""
proxy_type, addr, port, rdns, username, password = self.proxy
# If we need to resolve locally, we do this now
addr = dest_addr if rdns else socket.gethostbyname(dest_addr)
self.sendall(b"CONNECT " + addr.encode() + b":" + str(dest_port).encode() +
b" HTTP/1.1\r\n" + b"Host: " + dest_addr.encode() + b"\r\n\r\n")
# We just need the first line to check if the connection was successful
fobj = self.makefile()
status_line = fobj.readline()
fobj.close()
if not status_line:
raise GeneralProxyError("Connection closed unexpectedly")
try:
proto, status_code, status_msg = status_line.split(" ", 2)
except ValueError:
raise GeneralProxyError("HTTP proxy server sent invalid response")
if not proto.startswith("HTTP/"):
raise GeneralProxyError("Proxy server does not appear to be an HTTP proxy")
try:
status_code = int(status_code)
except ValueError:
raise HTTPError("HTTP proxy server did not return a valid HTTP status")
if status_code != 200:
error = "{}: {}".format(status_code, status_msg)
if status_code in (400, 403, 405):
# It's likely that the HTTP proxy server does not support the CONNECT tunneling method
error += ("\n[*] Note: The HTTP proxy server may not be supported by PySocks"
" (must be a CONNECT tunnel proxy)")
raise HTTPError(error)
self.proxy_sockname = (b"0.0.0.0", 0)
self.proxy_peername = addr, dest_port
def connect(self, dest_pair):
"""
Connects to the specified destination through a proxy.
Uses the same API as socket's connect().
To select the proxy server, use set_proxy().
dest_pair - 2-tuple of (IP/hostname, port).
"""
proxy_type, proxy_addr, proxy_port, rdns, username, password = self.proxy
dest_addr, dest_port = dest_pair
# Do a minimal input check first
if (not isinstance(dest_pair, (list, tuple))
or len(dest_pair) != 2
or not isinstance(dest_addr, type(""))
or not isinstance(dest_port, int)):
raise GeneralProxyError("Invalid destination-connection (host, port) pair")
if proxy_type is None:
# Treat like regular socket object
_orig_socket.connect(self, (dest_addr, dest_port))
return
proxy_port = proxy_port or DEFAULT_PORTS.get(proxy_type)
if not proxy_port:
raise GeneralProxyError("Invalid proxy type")
try:
# Initial connection to proxy server
_orig_socket.connect(self, (proxy_addr, proxy_port))
except socket.error as error:
# Error while connecting to proxy
self.close()
proxy_server = "{}:{}".format(proxy_addr.decode(), proxy_port)
printable_type = PRINTABLE_PROXY_TYPES[proxy_type]
msg = "Error connecting to {} proxy {}".format(printable_type,
proxy_server)
raise ProxyConnectionError(msg, error)
else:
# Connected to proxy server, now negotiate
try:
# Calls negotiate_{SOCKS4, SOCKS5, HTTP}
self.proxy_negotiators[proxy_type](dest_addr, dest_port)
except socket.error as error:
# Wrap socket errors
self.close()
raise GeneralProxyError("Socket error", error)
except ProxyError:
# Protocol error while negotiating with proxy
self.close()
raise
Посты чуть ниже также могут вас заинтересовать
Вот хорошее описание сервера, который сделан
ОтветитьУдалитьКлиент <-> Сервер (Python)
http://www.demoriz.ru/post-19
import socket
Удалитьhost = "localhost"
port = 44444
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
s.bind((host, port))
s.listen(5)
sock, addr = s.accept()
while True:
buf = sock.recv(1024)
if buf == "exit":
sock.send("bye")
break
elif buf:
sock.send(buf)
print buf # To view what exactly server resiev
sock.close()
Выше код моего тестового сервера Посмотрел видео о взаимодействии telnetlib с netcat и нашел Python Sock сервер для тестов... и настроил под него Putty
Удалить