From: Andrew Lorimer <andrew@lorimer.id.au>
Date: Fri, 7 May 2021 13:24:37 +0000 (+1000)
Subject: restructure project, add setuptools files
X-Git-Tag: v0.0.1~1
X-Git-Url: https://git.lorimer.id.au/ppt-control.git/diff_plain/7cb045a41bc2a2cff810b5176cac78ddf6fbc27b?hp=ee4eafe3cd5e26aaf93702af45cd58eee1b90d03

restructure project, add setuptools files
---

diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..f288702
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,674 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
+
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+  THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
+APPLICABLE LAW.  EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
+HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
+OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
+THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+PURPOSE.  THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
+IS WITH YOU.  SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
+ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
+
+  16. Limitation of Liability.
+
+  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
+GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
+USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
+DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
+PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
+EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
+SUCH DAMAGES.
+
+  17. Interpretation of Sections 15 and 16.
+
+  If the disclaimer of warranty and limitation of liability provided
+above cannot be given local legal effect according to their terms,
+reviewing courts shall apply local law that most closely approximates
+an absolute waiver of all civil liability in connection with the
+Program, unless a warranty or assumption of liability accompanies a
+copy of the Program in return for a fee.
+
+                     END OF TERMS AND CONDITIONS
+
+            How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+state the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+Also add information on how to contact you by electronic and paper mail.
+
+  If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
+
+    <program>  Copyright (C) <year>  <name of author>
+    This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+  You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+<https://www.gnu.org/licenses/>.
+
+  The GNU General Public License does not permit incorporating your program
+into proprietary programs.  If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.  But first, please read
+<https://www.gnu.org/licenses/why-not-lgpl.html>.
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..0fa4b27
--- /dev/null
+++ b/README.md
@@ -0,0 +1,39 @@
+# ppt-control
+
+An interface for controlling PowerPoint slideshows over the network using WebSocket. With the included HTTP frontend, this package can essentially replicate PowerPoint's presenter view on any computer on the local network, with very low processing latency for commands.
+
+This was originally designed for controlling a PowerPoint slideshow from an instance of OBS (Open Broadcaster Software) running on the same computer (removing the need for an extra monitor to show presenter view).
+
+This package includes three main components:
+1. The daemon, which runs in the background, independently of PowerPoint, and listens for WebSocket commands and hosts an HTTP server for the frontend
+2. The HTTP frontend, written in JavaScript, which displays status information and sends commands to the daemon through WebSocket (this can be docked in one of OBS's "custom browser docks")
+3. The OBS script, which allows a mapping of keyboard shortcuts to commands within OBS in order to control the slideshow from anywhere in OBS (keyboard shortcuts are implemented in the HTTP interface but only work when this is focused in OBS)
+
+Due to the implementation's use of `pywin32` for COM communication, this daemon only works on Windows (but the HTTP and WebSocket interfaces can be accessed from any device).
+
+## Installation
+
+`pip install ppt-control`
+will install all three components. You can then start the daemon by running 
+`py -m ppt_control`
+from a command prompt (note the underscore). There are a few steps to set the package up fully:
+
+### Starting the daemon at bootup
+
+To start the daemon automatically at login, run 
+`pip show ppt-control`
+and get the location of the package. Create a shortcut to `ppt_control.py` in Explorer and put it in `%AppData%\Microsoft\Windows\Start Menu\Programs\Startup`.
+
+### Using the HTTP interface in OBS
+
+To view the HTTP interface from within OBS, you can add a "custom browser dock" (View -> Docks -> Custom Browser Docks). The location should be the hostname and port number of the daemon (`http://localhost` by default). You can refresh the custom browser dock with Ctrl+R.
+
+### Global keyboard shortcuts in OBS
+
+Keyboard shortcuts in OBS browser docks only work when the browser dock is focused by clicking in it (there is actually no indication of focus in the interface, but if you click away from the browser dock the shortcuts will not work). To resolve this, there is another Python script called `ppt_control_obs.py` which can be added as a custom script in OBS. This script will listen for specific keys (configured in OBS's Hotkeys settings) and send commands to the daemon directly over WebSocket (no HTTP involved). To add the custom script, go to Tools -> Scripts, then click the + and choose the script. This will be located in the package directory which can be found with
+`pip show ppt-control`
+as above. It is a good idea to turn off the keyboard shortcuts in the HTTP interface after loading the OBS hotkey script, otherwise commands will be sent to the daemon twice when the browser dock is focused.
+
+## Configuration
+
+Various settings can be changed in `%AppData%\ppt-control\ppt-control.ini`. This file is populated with the defaults for all possible settings at installation.
diff --git a/ppt-control.ini b/ppt-control.ini
new file mode 100644
index 0000000..a9b9bdd
--- /dev/null
+++ b/ppt-control.ini
@@ -0,0 +1,14 @@
+[Main]
+logging = debug
+cache = C:\Windows\Temp\ppt-cache
+cache_format = JPG
+cache_timeout = 300
+blackwhite = both
+
+[HTTP]
+interface = 
+port = 80
+
+[WebSocket]
+interface = 0.0.0.0
+port = 5678
diff --git a/ppt_control/__init__.py b/ppt_control/__init__.py
new file mode 100644
index 0000000..8115f6b
--- /dev/null
+++ b/ppt_control/__init__.py
@@ -0,0 +1,5 @@
+from os import getenv
+
+__version__ = "0.0.1"
+__name__ = "ppt-control"
+__configdir__ = getenv("APPDATA") + "\\" + __name__
diff --git a/ppt_control/__main__.py b/ppt_control/__main__.py
new file mode 100644
index 0000000..588f74c
--- /dev/null
+++ b/ppt_control/__main__.py
@@ -0,0 +1,6 @@
+"""
+Executed when ppt_control is executed as a script
+"""
+
+from .ppt_control import start_interface
+start_interface()
diff --git a/ppt_control/config.py b/ppt_control/config.py
new file mode 100644
index 0000000..7964cc9
--- /dev/null
+++ b/ppt_control/config.py
@@ -0,0 +1,43 @@
+from configparser import ConfigParser
+from pkg_resources import Requirement, resource_filename
+
+global prefs
+prefs = None
+
+defaults = {
+        'Main': {
+            'logging': 'info',
+            'cache': r'''C:\Windows\Temp\ppt-cache''',
+            'cache_format': 'JPG',
+            'cache_timeout': 5*60,
+            'blackwhite': 'both'
+        },
+        'HTTP': {
+            'interface': '',
+            'port': 80
+        },
+        'WebSocket': {
+            'interface': '0.0.0.0',
+            'port': 5678
+        }
+}
+
+
+def loadconf(configpaths):
+    """
+    Initial setup for a ConfigParser object. `configpaths` should be a list of
+    configuration files to load (typically only one). To use the generated
+    ConfigParser, use `import logparse.config` and then `config.prefs.get(..)`.
+    The prefs object is returned after creation as a convenience but this method
+    should only be called once per runtime.
+    """
+    prefs = ConfigParser()
+    prefs.read_dict(defaults)
+    try:
+        success = prefs.read(configpaths)
+        print("Loaded {0} config file(s): {1}".format(
+                str(len(success)), str(success)))
+    except Exception as e:
+        print("Error processing config: " + str(e))
+    return prefs
+
diff --git a/ppt_control/http_server_39.py b/ppt_control/http_server_39.py
new file mode 100755
index 0000000..def05f4
--- /dev/null
+++ b/ppt_control/http_server_39.py
@@ -0,0 +1,1294 @@
+"""HTTP server classes.
+
+Note: BaseHTTPRequestHandler doesn't implement any HTTP request; see
+SimpleHTTPRequestHandler for simple implementations of GET, HEAD and POST,
+and CGIHTTPRequestHandler for CGI scripts.
+
+It does, however, optionally implement HTTP/1.1 persistent connections,
+as of version 0.3.
+
+Notes on CGIHTTPRequestHandler
+------------------------------
+
+This class implements GET and POST requests to cgi-bin scripts.
+
+If the os.fork() function is not present (e.g. on Windows),
+subprocess.Popen() is used as a fallback, with slightly altered semantics.
+
+In all cases, the implementation is intentionally naive -- all
+requests are executed synchronously.
+
+SECURITY WARNING: DON'T USE THIS CODE UNLESS YOU ARE INSIDE A FIREWALL
+-- it may execute arbitrary Python code or external programs.
+
+Note that status code 200 is sent prior to execution of a CGI script, so
+scripts cannot send other status codes such as 302 (redirect).
+
+XXX To do:
+
+- log requests even later (to capture byte count)
+- log user-agent header and other interesting goodies
+- send error log to separate file
+"""
+
+
+# See also:
+#
+# HTTP Working Group                                        T. Berners-Lee
+# INTERNET-DRAFT                                            R. T. Fielding
+# <draft-ietf-http-v10-spec-00.txt>                     H. Frystyk Nielsen
+# Expires September 8, 1995                                  March 8, 1995
+#
+# URL: http://www.ics.uci.edu/pub/ietf/http/draft-ietf-http-v10-spec-00.txt
+#
+# and
+#
+# Network Working Group                                      R. Fielding
+# Request for Comments: 2616                                       et al
+# Obsoletes: 2068                                              June 1999
+# Category: Standards Track
+#
+# URL: http://www.faqs.org/rfcs/rfc2616.html
+
+# Log files
+# ---------
+#
+# Here's a quote from the NCSA httpd docs about log file format.
+#
+# | The logfile format is as follows. Each line consists of:
+# |
+# | host rfc931 authuser [DD/Mon/YYYY:hh:mm:ss] "request" ddd bbbb
+# |
+# |        host: Either the DNS name or the IP number of the remote client
+# |        rfc931: Any information returned by identd for this person,
+# |                - otherwise.
+# |        authuser: If user sent a userid for authentication, the user name,
+# |                  - otherwise.
+# |        DD: Day
+# |        Mon: Month (calendar name)
+# |        YYYY: Year
+# |        hh: hour (24-hour format, the machine's timezone)
+# |        mm: minutes
+# |        ss: seconds
+# |        request: The first line of the HTTP request as sent by the client.
+# |        ddd: the status code returned by the server, - if not available.
+# |        bbbb: the total number of bytes sent,
+# |              *not including the HTTP/1.0 header*, - if not available
+# |
+# | You can determine the name of the file accessed through request.
+#
+# (Actually, the latter is only true if you know the server configuration
+# at the time the request was made!)
+
+__version__ = "0.6"
+
+__all__ = [
+    "HTTPServer", "ThreadingHTTPServer", "BaseHTTPRequestHandler",
+    "SimpleHTTPRequestHandler", "CGIHTTPRequestHandler",
+]
+
+import copy
+import datetime
+import email.utils
+import html
+import http.client
+import io
+import mimetypes
+import os
+import posixpath
+import select
+import shutil
+import socket # For gethostbyaddr()
+import socketserver
+import sys
+import time
+import urllib.parse
+import contextlib
+from functools import partial
+
+from http import HTTPStatus
+
+
+# Default error message template
+DEFAULT_ERROR_MESSAGE = """\
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN"
+        "http://www.w3.org/TR/html4/strict.dtd">
+<html>
+    <head>
+        <meta http-equiv="Content-Type" content="text/html;charset=utf-8">
+        <title>Error response</title>
+    </head>
+    <body>
+        <h1>Error response</h1>
+        <p>Error code: %(code)d</p>
+        <p>Message: %(message)s.</p>
+        <p>Error code explanation: %(code)s - %(explain)s.</p>
+    </body>
+</html>
+"""
+
+DEFAULT_ERROR_CONTENT_TYPE = "text/html;charset=utf-8"
+
+class HTTPServer(socketserver.TCPServer):
+
+    allow_reuse_address = 1    # Seems to make sense in testing environment
+
+    def server_bind(self):
+        """Override server_bind to store the server name."""
+        socketserver.TCPServer.server_bind(self)
+        host, port = self.server_address[:2]
+        self.server_name = socket.getfqdn(host)
+        self.server_port = port
+
+
+class ThreadingHTTPServer(socketserver.ThreadingMixIn, HTTPServer):
+    daemon_threads = True
+
+
+class BaseHTTPRequestHandler(socketserver.StreamRequestHandler):
+
+    """HTTP request handler base class.
+
+    The following explanation of HTTP serves to guide you through the
+    code as well as to expose any misunderstandings I may have about
+    HTTP (so you don't need to read the code to figure out I'm wrong
+    :-).
+
+    HTTP (HyperText Transfer Protocol) is an extensible protocol on
+    top of a reliable stream transport (e.g. TCP/IP).  The protocol
+    recognizes three parts to a request:
+
+    1. One line identifying the request type and path
+    2. An optional set of RFC-822-style headers
+    3. An optional data part
+
+    The headers and data are separated by a blank line.
+
+    The first line of the request has the form
+
+    <command> <path> <version>
+
+    where <command> is a (case-sensitive) keyword such as GET or POST,
+    <path> is a string containing path information for the request,
+    and <version> should be the string "HTTP/1.0" or "HTTP/1.1".
+    <path> is encoded using the URL encoding scheme (using %xx to signify
+    the ASCII character with hex code xx).
+
+    The specification specifies that lines are separated by CRLF but
+    for compatibility with the widest range of clients recommends
+    servers also handle LF.  Similarly, whitespace in the request line
+    is treated sensibly (allowing multiple spaces between components
+    and allowing trailing whitespace).
+
+    Similarly, for output, lines ought to be separated by CRLF pairs
+    but most clients grok LF characters just fine.
+
+    If the first line of the request has the form
+
+    <command> <path>
+
+    (i.e. <version> is left out) then this is assumed to be an HTTP
+    0.9 request; this form has no optional headers and data part and
+    the reply consists of just the data.
+
+    The reply form of the HTTP 1.x protocol again has three parts:
+
+    1. One line giving the response code
+    2. An optional set of RFC-822-style headers
+    3. The data
+
+    Again, the headers and data are separated by a blank line.
+
+    The response code line has the form
+
+    <version> <responsecode> <responsestring>
+
+    where <version> is the protocol version ("HTTP/1.0" or "HTTP/1.1"),
+    <responsecode> is a 3-digit response code indicating success or
+    failure of the request, and <responsestring> is an optional
+    human-readable string explaining what the response code means.
+
+    This server parses the request and the headers, and then calls a
+    function specific to the request type (<command>).  Specifically,
+    a request SPAM will be handled by a method do_SPAM().  If no
+    such method exists the server sends an error response to the
+    client.  If it exists, it is called with no arguments:
+
+    do_SPAM()
+
+    Note that the request name is case sensitive (i.e. SPAM and spam
+    are different requests).
+
+    The various request details are stored in instance variables:
+
+    - client_address is the client IP address in the form (host,
+    port);
+
+    - command, path and version are the broken-down request line;
+
+    - headers is an instance of email.message.Message (or a derived
+    class) containing the header information;
+
+    - rfile is a file object open for reading positioned at the
+    start of the optional input data part;
+
+    - wfile is a file object open for writing.
+
+    IT IS IMPORTANT TO ADHERE TO THE PROTOCOL FOR WRITING!
+
+    The first thing to be written must be the response line.  Then
+    follow 0 or more header lines, then a blank line, and then the
+    actual data (if any).  The meaning of the header lines depends on
+    the command executed by the server; in most cases, when data is
+    returned, there should be at least one header line of the form
+
+    Content-type: <type>/<subtype>
+
+    where <type> and <subtype> should be registered MIME types,
+    e.g. "text/html" or "text/plain".
+
+    """
+
+    # The Python system version, truncated to its first component.
+    sys_version = "Python/" + sys.version.split()[0]
+
+    # The server software version.  You may want to override this.
+    # The format is multiple whitespace-separated strings,
+    # where each string is of the form name[/version].
+    server_version = "BaseHTTP/" + __version__
+
+    error_message_format = DEFAULT_ERROR_MESSAGE
+    error_content_type = DEFAULT_ERROR_CONTENT_TYPE
+
+    # The default request version.  This only affects responses up until
+    # the point where the request line is parsed, so it mainly decides what
+    # the client gets back when sending a malformed request line.
+    # Most web servers default to HTTP 0.9, i.e. don't send a status line.
+    default_request_version = "HTTP/0.9"
+
+    def parse_request(self):
+        """Parse a request (internal).
+
+        The request should be stored in self.raw_requestline; the results
+        are in self.command, self.path, self.request_version and
+        self.headers.
+
+        Return True for success, False for failure; on failure, any relevant
+        error response has already been sent back.
+
+        """
+        self.command = None  # set in case of error on the first line
+        self.request_version = version = self.default_request_version
+        self.close_connection = True
+        requestline = str(self.raw_requestline, 'iso-8859-1')
+        requestline = requestline.rstrip('\r\n')
+        self.requestline = requestline
+        words = requestline.split()
+        if len(words) == 0:
+            return False
+
+        if len(words) >= 3:  # Enough to determine protocol version
+            version = words[-1]
+            try:
+                if not version.startswith('HTTP/'):
+                    raise ValueError
+                base_version_number = version.split('/', 1)[1]
+                version_number = base_version_number.split(".")
+                # RFC 2145 section 3.1 says there can be only one "." and
+                #   - major and minor numbers MUST be treated as
+                #      separate integers;
+                #   - HTTP/2.4 is a lower version than HTTP/2.13, which in
+                #      turn is lower than HTTP/12.3;
+                #   - Leading zeros MUST be ignored by recipients.
+                if len(version_number) != 2:
+                    raise ValueError
+                version_number = int(version_number[0]), int(version_number[1])
+            except (ValueError, IndexError):
+                self.send_error(
+                    HTTPStatus.BAD_REQUEST,
+                    "Bad request version (%r)" % version)
+                return False
+            if version_number >= (1, 1) and self.protocol_version >= "HTTP/1.1":
+                self.close_connection = False
+            if version_number >= (2, 0):
+                self.send_error(
+                    HTTPStatus.HTTP_VERSION_NOT_SUPPORTED,
+                    "Invalid HTTP version (%s)" % base_version_number)
+                return False
+            self.request_version = version
+
+        if not 2 <= len(words) <= 3:
+            self.send_error(
+                HTTPStatus.BAD_REQUEST,
+                "Bad request syntax (%r)" % requestline)
+            return False
+        command, path = words[:2]
+        if len(words) == 2:
+            self.close_connection = True
+            if command != 'GET':
+                self.send_error(
+                    HTTPStatus.BAD_REQUEST,
+                    "Bad HTTP/0.9 request type (%r)" % command)
+                return False
+        self.command, self.path = command, path
+
+        # Examine the headers and look for a Connection directive.
+        try:
+            self.headers = http.client.parse_headers(self.rfile,
+                                                     _class=self.MessageClass)
+        except http.client.LineTooLong as err:
+            self.send_error(
+                HTTPStatus.REQUEST_HEADER_FIELDS_TOO_LARGE,
+                "Line too long",
+                str(err))
+            return False
+        except http.client.HTTPException as err:
+            self.send_error(
+                HTTPStatus.REQUEST_HEADER_FIELDS_TOO_LARGE,
+                "Too many headers",
+                str(err)
+            )
+            return False
+
+        conntype = self.headers.get('Connection', "")
+        if conntype.lower() == 'close':
+            self.close_connection = True
+        elif (conntype.lower() == 'keep-alive' and
+              self.protocol_version >= "HTTP/1.1"):
+            self.close_connection = False
+        # Examine the headers and look for an Expect directive
+        expect = self.headers.get('Expect', "")
+        if (expect.lower() == "100-continue" and
+                self.protocol_version >= "HTTP/1.1" and
+                self.request_version >= "HTTP/1.1"):
+            if not self.handle_expect_100():
+                return False
+        return True
+
+    def handle_expect_100(self):
+        """Decide what to do with an "Expect: 100-continue" header.
+
+        If the client is expecting a 100 Continue response, we must
+        respond with either a 100 Continue or a final response before
+        waiting for the request body. The default is to always respond
+        with a 100 Continue. You can behave differently (for example,
+        reject unauthorized requests) by overriding this method.
+
+        This method should either return True (possibly after sending
+        a 100 Continue response) or send an error response and return
+        False.
+
+        """
+        self.send_response_only(HTTPStatus.CONTINUE)
+        self.end_headers()
+        return True
+
+    def handle_one_request(self):
+        """Handle a single HTTP request.
+
+        You normally don't need to override this method; see the class
+        __doc__ string for information on how to handle specific HTTP
+        commands such as GET and POST.
+
+        """
+        try:
+            self.raw_requestline = self.rfile.readline(65537)
+            if len(self.raw_requestline) > 65536:
+                self.requestline = ''
+                self.request_version = ''
+                self.command = ''
+                self.send_error(HTTPStatus.REQUEST_URI_TOO_LONG)
+                return
+            if not self.raw_requestline:
+                self.close_connection = True
+                return
+            if not self.parse_request():
+                # An error code has been sent, just exit
+                return
+            mname = 'do_' + self.command
+            if not hasattr(self, mname):
+                self.send_error(
+                    HTTPStatus.NOT_IMPLEMENTED,
+                    "Unsupported method (%r)" % self.command)
+                return
+            method = getattr(self, mname)
+            method()
+            self.wfile.flush() #actually send the response if not already done.
+        except socket.timeout as e:
+            #a read or a write timed out.  Discard this connection
+            self.log_error("Request timed out: %r", e)
+            self.close_connection = True
+            return
+
+    def handle(self):
+        """Handle multiple requests if necessary."""
+        self.close_connection = True
+
+        self.handle_one_request()
+        while not self.close_connection:
+            self.handle_one_request()
+
+    def send_error(self, code, message=None, explain=None):
+        """Send and log an error reply.
+
+        Arguments are
+        * code:    an HTTP error code
+                   3 digits
+        * message: a simple optional 1 line reason phrase.
+                   *( HTAB / SP / VCHAR / %x80-FF )
+                   defaults to short entry matching the response code
+        * explain: a detailed message defaults to the long entry
+                   matching the response code.
+
+        This sends an error response (so it must be called before any
+        output has been generated), logs the error, and finally sends
+        a piece of HTML explaining the error to the user.
+
+        """
+
+        try:
+            shortmsg, longmsg = self.responses[code]
+        except KeyError:
+            shortmsg, longmsg = '???', '???'
+        if message is None:
+            message = shortmsg
+        if explain is None:
+            explain = longmsg
+        self.log_error("code %d, message %s", code, message)
+        self.send_response(code, message)
+        self.send_header('Connection', 'close')
+
+        # Message body is omitted for cases described in:
+        #  - RFC7230: 3.3. 1xx, 204(No Content), 304(Not Modified)
+        #  - RFC7231: 6.3.6. 205(Reset Content)
+        body = None
+        if (code >= 200 and
+            code not in (HTTPStatus.NO_CONTENT,
+                         HTTPStatus.RESET_CONTENT,
+                         HTTPStatus.NOT_MODIFIED)):
+            # HTML encode to prevent Cross Site Scripting attacks
+            # (see bug #1100201)
+            content = (self.error_message_format % {
+                'code': code,
+                'message': html.escape(message, quote=False),
+                'explain': html.escape(explain, quote=False)
+            })
+            body = content.encode('UTF-8', 'replace')
+            self.send_header("Content-Type", self.error_content_type)
+            self.send_header('Content-Length', str(len(body)))
+        self.end_headers()
+
+        if self.command != 'HEAD' and body:
+            self.wfile.write(body)
+
+    def send_response(self, code, message=None):
+        """Add the response header to the headers buffer and log the
+        response code.
+
+        Also send two standard headers with the server software
+        version and the current date.
+
+        """
+        self.log_request(code)
+        self.send_response_only(code, message)
+        self.send_header('Server', self.version_string())
+        self.send_header('Date', self.date_time_string())
+
+    def send_response_only(self, code, message=None):
+        """Send the response header only."""
+        if self.request_version != 'HTTP/0.9':
+            if message is None:
+                if code in self.responses:
+                    message = self.responses[code][0]
+                else:
+                    message = ''
+            if not hasattr(self, '_headers_buffer'):
+                self._headers_buffer = []
+            self._headers_buffer.append(("%s %d %s\r\n" %
+                    (self.protocol_version, code, message)).encode(
+                        'latin-1', 'strict'))
+
+    def send_header(self, keyword, value):
+        """Send a MIME header to the headers buffer."""
+        if self.request_version != 'HTTP/0.9':
+            if not hasattr(self, '_headers_buffer'):
+                self._headers_buffer = []
+            self._headers_buffer.append(
+                ("%s: %s\r\n" % (keyword, value)).encode('latin-1', 'strict'))
+
+        if keyword.lower() == 'connection':
+            if value.lower() == 'close':
+                self.close_connection = True
+            elif value.lower() == 'keep-alive':
+                self.close_connection = False
+
+    def end_headers(self):
+        """Send the blank line ending the MIME headers."""
+        if self.request_version != 'HTTP/0.9':
+            self._headers_buffer.append(b"\r\n")
+            self.flush_headers()
+
+    def flush_headers(self):
+        if hasattr(self, '_headers_buffer'):
+            self.wfile.write(b"".join(self._headers_buffer))
+            self._headers_buffer = []
+
+    def log_request(self, code='-', size='-'):
+        """Log an accepted request.
+
+        This is called by send_response().
+
+        """
+        if isinstance(code, HTTPStatus):
+            code = code.value
+        self.log_message('"%s" %s %s',
+                         self.requestline, str(code), str(size))
+
+    def log_error(self, format, *args):
+        """Log an error.
+
+        This is called when a request cannot be fulfilled.  By
+        default it passes the message on to log_message().
+
+        Arguments are the same as for log_message().
+
+        XXX This should go to the separate error log.
+
+        """
+
+        self.log_message(format, *args)
+
+    def log_message(self, format, *args):
+        """Log an arbitrary message.
+
+        This is used by all other logging functions.  Override
+        it if you have specific logging wishes.
+
+        The first argument, FORMAT, is a format string for the
+        message to be logged.  If the format string contains
+        any % escapes requiring parameters, they should be
+        specified as subsequent arguments (it's just like
+        printf!).
+
+        The client ip and current date/time are prefixed to
+        every message.
+
+        """
+
+        sys.stderr.write("%s - - [%s] %s\n" %
+                         (self.address_string(),
+                          self.log_date_time_string(),
+                          format%args))
+
+    def version_string(self):
+        """Return the server software version string."""
+        return self.server_version + ' ' + self.sys_version
+
+    def date_time_string(self, timestamp=None):
+        """Return the current date and time formatted for a message header."""
+        if timestamp is None:
+            timestamp = time.time()
+        return email.utils.formatdate(timestamp, usegmt=True)
+
+    def log_date_time_string(self):
+        """Return the current time formatted for logging."""
+        now = time.time()
+        year, month, day, hh, mm, ss, x, y, z = time.localtime(now)
+        s = "%02d/%3s/%04d %02d:%02d:%02d" % (
+                day, self.monthname[month], year, hh, mm, ss)
+        return s
+
+    weekdayname = ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
+
+    monthname = [None,
+                 'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun',
+                 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
+
+    def address_string(self):
+        """Return the client address."""
+
+        return self.client_address[0]
+
+    # Essentially static class variables
+
+    # The version of the HTTP protocol we support.
+    # Set this to HTTP/1.1 to enable automatic keepalive
+    protocol_version = "HTTP/1.0"
+
+    # MessageClass used to parse headers
+    MessageClass = http.client.HTTPMessage
+
+    # hack to maintain backwards compatibility
+    responses = {
+        v: (v.phrase, v.description)
+        for v in HTTPStatus.__members__.values()
+    }
+
+
+class SimpleHTTPRequestHandler(BaseHTTPRequestHandler):
+
+    """Simple HTTP request handler with GET and HEAD commands.
+
+    This serves files from the current directory and any of its
+    subdirectories.  The MIME type for files is determined by
+    calling the .guess_type() method.
+
+    The GET and HEAD requests are identical except that the HEAD
+    request omits the actual contents of the file.
+
+    """
+
+    server_version = "SimpleHTTP/" + __version__
+    extensions_map = _encodings_map_default = {
+        '.gz': 'application/gzip',
+        '.Z': 'application/octet-stream',
+        '.bz2': 'application/x-bzip2',
+        '.xz': 'application/x-xz',
+    }
+
+    def __init__(self, *args, directory=None, **kwargs):
+        if directory is None:
+            directory = os.getcwd()
+        self.directory = os.fspath(directory)
+        super().__init__(*args, **kwargs)
+
+    def do_GET(self):
+        """Serve a GET request."""
+        f = self.send_head()
+        if f:
+            try:
+                self.copyfile(f, self.wfile)
+            finally:
+                f.close()
+
+    def do_HEAD(self):
+        """Serve a HEAD request."""
+        f = self.send_head()
+        if f:
+            f.close()
+
+    def send_head(self):
+        """Common code for GET and HEAD commands.
+
+        This sends the response code and MIME headers.
+
+        Return value is either a file object (which has to be copied
+        to the outputfile by the caller unless the command was HEAD,
+        and must be closed by the caller under all circumstances), or
+        None, in which case the caller has nothing further to do.
+
+        """
+        path = self.translate_path(self.path)
+        f = None
+        if os.path.isdir(path):
+            parts = urllib.parse.urlsplit(self.path)
+            if not parts.path.endswith('/'):
+                # redirect browser - doing basically what apache does
+                self.send_response(HTTPStatus.MOVED_PERMANENTLY)
+                new_parts = (parts[0], parts[1], parts[2] + '/',
+                             parts[3], parts[4])
+                new_url = urllib.parse.urlunsplit(new_parts)
+                self.send_header("Location", new_url)
+                self.end_headers()
+                return None
+            for index in "index.html", "index.htm":
+                index = os.path.join(path, index)
+                if os.path.exists(index):
+                    path = index
+                    break
+            else:
+                return self.list_directory(path)
+        ctype = self.guess_type(path)
+        # check for trailing "/" which should return 404. See Issue17324
+        # The test for this was added in test_httpserver.py
+        # However, some OS platforms accept a trailingSlash as a filename
+        # See discussion on python-dev and Issue34711 regarding
+        # parseing and rejection of filenames with a trailing slash
+        if path.endswith("/"):
+            self.send_error(HTTPStatus.NOT_FOUND, "File not found")
+            return None
+        try:
+            f = open(path, 'rb')
+        except OSError:
+            self.send_error(HTTPStatus.NOT_FOUND, "File not found")
+            return None
+
+        try:
+            fs = os.fstat(f.fileno())
+            # Use browser cache if possible
+            if ("If-Modified-Since" in self.headers
+                    and "If-None-Match" not in self.headers):
+                # compare If-Modified-Since and time of last file modification
+                try:
+                    ims = email.utils.parsedate_to_datetime(
+                        self.headers["If-Modified-Since"])
+                except (TypeError, IndexError, OverflowError, ValueError):
+                    # ignore ill-formed values
+                    pass
+                else:
+                    if ims.tzinfo is None:
+                        # obsolete format with no timezone, cf.
+                        # https://tools.ietf.org/html/rfc7231#section-7.1.1.1
+                        ims = ims.replace(tzinfo=datetime.timezone.utc)
+                    if ims.tzinfo is datetime.timezone.utc:
+                        # compare to UTC datetime of last modification
+                        last_modif = datetime.datetime.fromtimestamp(
+                            fs.st_mtime, datetime.timezone.utc)
+                        # remove microseconds, like in If-Modified-Since
+                        last_modif = last_modif.replace(microsecond=0)
+
+                        if last_modif <= ims:
+                            self.send_response(HTTPStatus.NOT_MODIFIED)
+                            self.end_headers()
+                            f.close()
+                            return None
+
+            self.send_response(HTTPStatus.OK)
+            self.send_header("Content-type", ctype)
+            self.send_header("Content-Length", str(fs[6]))
+            self.send_header("Last-Modified",
+                self.date_time_string(fs.st_mtime))
+            self.end_headers()
+            return f
+        except:
+            f.close()
+            raise
+
+    def list_directory(self, path):
+        """Helper to produce a directory listing (absent index.html).
+
+        Return value is either a file object, or None (indicating an
+        error).  In either case, the headers are sent, making the
+        interface the same as for send_head().
+
+        """
+        try:
+            list = os.listdir(path)
+        except OSError:
+            self.send_error(
+                HTTPStatus.NOT_FOUND,
+                "No permission to list directory")
+            return None
+        list.sort(key=lambda a: a.lower())
+        r = []
+        try:
+            displaypath = urllib.parse.unquote(self.path,
+                                               errors='surrogatepass')
+        except UnicodeDecodeError:
+            displaypath = urllib.parse.unquote(path)
+        displaypath = html.escape(displaypath, quote=False)
+        enc = sys.getfilesystemencoding()
+        title = 'Directory listing for %s' % displaypath
+        r.append('<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" '
+                 '"http://www.w3.org/TR/html4/strict.dtd">')
+        r.append('<html>\n<head>')
+        r.append('<meta http-equiv="Content-Type" '
+                 'content="text/html; charset=%s">' % enc)
+        r.append('<title>%s</title>\n</head>' % title)
+        r.append('<body>\n<h1>%s</h1>' % title)
+        r.append('<hr>\n<ul>')
+        for name in list:
+            fullname = os.path.join(path, name)
+            displayname = linkname = name
+            # Append / for directories or @ for symbolic links
+            if os.path.isdir(fullname):
+                displayname = name + "/"
+                linkname = name + "/"
+            if os.path.islink(fullname):
+                displayname = name + "@"
+                # Note: a link to a directory displays with @ and links with /
+            r.append('<li><a href="%s">%s</a></li>'
+                    % (urllib.parse.quote(linkname,
+                                          errors='surrogatepass'),
+                       html.escape(displayname, quote=False)))
+        r.append('</ul>\n<hr>\n</body>\n</html>\n')
+        encoded = '\n'.join(r).encode(enc, 'surrogateescape')
+        f = io.BytesIO()
+        f.write(encoded)
+        f.seek(0)
+        self.send_response(HTTPStatus.OK)
+        self.send_header("Content-type", "text/html; charset=%s" % enc)
+        self.send_header("Content-Length", str(len(encoded)))
+        self.end_headers()
+        return f
+
+    def translate_path(self, path):
+        """Translate a /-separated PATH to the local filename syntax.
+
+        Components that mean special things to the local file system
+        (e.g. drive or directory names) are ignored.  (XXX They should
+        probably be diagnosed.)
+
+        """
+        # abandon query parameters
+        path = path.split('?',1)[0]
+        path = path.split('#',1)[0]
+        # Don't forget explicit trailing slash when normalizing. Issue17324
+        trailing_slash = path.rstrip().endswith('/')
+        try:
+            path = urllib.parse.unquote(path, errors='surrogatepass')
+        except UnicodeDecodeError:
+            path = urllib.parse.unquote(path)
+        path = posixpath.normpath(path)
+        words = path.split('/')
+        words = filter(None, words)
+        path = self.directory
+        for word in words:
+            if os.path.dirname(word) or word in (os.curdir, os.pardir):
+                # Ignore components that are not a simple file/directory name
+                continue
+            path = os.path.join(path, word)
+        if trailing_slash:
+            path += '/'
+        return path
+
+    def copyfile(self, source, outputfile):
+        """Copy all data between two file objects.
+
+        The SOURCE argument is a file object open for reading
+        (or anything with a read() method) and the DESTINATION
+        argument is a file object open for writing (or
+        anything with a write() method).
+
+        The only reason for overriding this would be to change
+        the block size or perhaps to replace newlines by CRLF
+        -- note however that this the default server uses this
+        to copy binary data as well.
+
+        """
+        shutil.copyfileobj(source, outputfile)
+
+    def guess_type(self, path):
+        """Guess the type of a file.
+
+        Argument is a PATH (a filename).
+
+        Return value is a string of the form type/subtype,
+        usable for a MIME Content-type header.
+
+        The default implementation looks the file's extension
+        up in the table self.extensions_map, using application/octet-stream
+        as a default; however it would be permissible (if
+        slow) to look inside the data to make a better guess.
+
+        """
+        base, ext = posixpath.splitext(path)
+        if ext in self.extensions_map:
+            return self.extensions_map[ext]
+        ext = ext.lower()
+        if ext in self.extensions_map:
+            return self.extensions_map[ext]
+        guess, _ = mimetypes.guess_type(path)
+        if guess:
+            return guess
+        return 'application/octet-stream'
+
+
+# Utilities for CGIHTTPRequestHandler
+
+def _url_collapse_path(path):
+    """
+    Given a URL path, remove extra '/'s and '.' path elements and collapse
+    any '..' references and returns a collapsed path.
+
+    Implements something akin to RFC-2396 5.2 step 6 to parse relative paths.
+    The utility of this function is limited to is_cgi method and helps
+    preventing some security attacks.
+
+    Returns: The reconstituted URL, which will always start with a '/'.
+
+    Raises: IndexError if too many '..' occur within the path.
+
+    """
+    # Query component should not be involved.
+    path, _, query = path.partition('?')
+    path = urllib.parse.unquote(path)
+
+    # Similar to os.path.split(os.path.normpath(path)) but specific to URL
+    # path semantics rather than local operating system semantics.
+    path_parts = path.split('/')
+    head_parts = []
+    for part in path_parts[:-1]:
+        if part == '..':
+            head_parts.pop() # IndexError if more '..' than prior parts
+        elif part and part != '.':
+            head_parts.append( part )
+    if path_parts:
+        tail_part = path_parts.pop()
+        if tail_part:
+            if tail_part == '..':
+                head_parts.pop()
+                tail_part = ''
+            elif tail_part == '.':
+                tail_part = ''
+    else:
+        tail_part = ''
+
+    if query:
+        tail_part = '?'.join((tail_part, query))
+
+    splitpath = ('/' + '/'.join(head_parts), tail_part)
+    collapsed_path = "/".join(splitpath)
+
+    return collapsed_path
+
+
+
+nobody = None
+
+def nobody_uid():
+    """Internal routine to get nobody's uid"""
+    global nobody
+    if nobody:
+        return nobody
+    try:
+        import pwd
+    except ImportError:
+        return -1
+    try:
+        nobody = pwd.getpwnam('nobody')[2]
+    except KeyError:
+        nobody = 1 + max(x[2] for x in pwd.getpwall())
+    return nobody
+
+
+def executable(path):
+    """Test for executable file."""
+    return os.access(path, os.X_OK)
+
+
+class CGIHTTPRequestHandler(SimpleHTTPRequestHandler):
+
+    """Complete HTTP server with GET, HEAD and POST commands.
+
+    GET and HEAD also support running CGI scripts.
+
+    The POST command is *only* implemented for CGI scripts.
+
+    """
+
+    # Determine platform specifics
+    have_fork = hasattr(os, 'fork')
+
+    # Make rfile unbuffered -- we need to read one line and then pass
+    # the rest to a subprocess, so we can't use buffered input.
+    rbufsize = 0
+
+    def do_POST(self):
+        """Serve a POST request.
+
+        This is only implemented for CGI scripts.
+
+        """
+
+        if self.is_cgi():
+            self.run_cgi()
+        else:
+            self.send_error(
+                HTTPStatus.NOT_IMPLEMENTED,
+                "Can only POST to CGI scripts")
+
+    def send_head(self):
+        """Version of send_head that support CGI scripts"""
+        if self.is_cgi():
+            return self.run_cgi()
+        else:
+            return SimpleHTTPRequestHandler.send_head(self)
+
+    def is_cgi(self):
+        """Test whether self.path corresponds to a CGI script.
+
+        Returns True and updates the cgi_info attribute to the tuple
+        (dir, rest) if self.path requires running a CGI script.
+        Returns False otherwise.
+
+        If any exception is raised, the caller should assume that
+        self.path was rejected as invalid and act accordingly.
+
+        The default implementation tests whether the normalized url
+        path begins with one of the strings in self.cgi_directories
+        (and the next character is a '/' or the end of the string).
+
+        """
+        collapsed_path = _url_collapse_path(self.path)
+        dir_sep = collapsed_path.find('/', 1)
+        while dir_sep > 0 and not collapsed_path[:dir_sep] in self.cgi_directories:
+            dir_sep = collapsed_path.find('/', dir_sep+1)
+        if dir_sep > 0:
+            head, tail = collapsed_path[:dir_sep], collapsed_path[dir_sep+1:]
+            self.cgi_info = head, tail
+            return True
+        return False
+
+
+    cgi_directories = ['/cgi-bin', '/htbin']
+
+    def is_executable(self, path):
+        """Test whether argument path is an executable file."""
+        return executable(path)
+
+    def is_python(self, path):
+        """Test whether argument path is a Python script."""
+        head, tail = os.path.splitext(path)
+        return tail.lower() in (".py", ".pyw")
+
+    def run_cgi(self):
+        """Execute a CGI script."""
+        dir, rest = self.cgi_info
+        path = dir + '/' + rest
+        i = path.find('/', len(dir)+1)
+        while i >= 0:
+            nextdir = path[:i]
+            nextrest = path[i+1:]
+
+            scriptdir = self.translate_path(nextdir)
+            if os.path.isdir(scriptdir):
+                dir, rest = nextdir, nextrest
+                i = path.find('/', len(dir)+1)
+            else:
+                break
+
+        # find an explicit query string, if present.
+        rest, _, query = rest.partition('?')
+
+        # dissect the part after the directory name into a script name &
+        # a possible additional path, to be stored in PATH_INFO.
+        i = rest.find('/')
+        if i >= 0:
+            script, rest = rest[:i], rest[i:]
+        else:
+            script, rest = rest, ''
+
+        scriptname = dir + '/' + script
+        scriptfile = self.translate_path(scriptname)
+        if not os.path.exists(scriptfile):
+            self.send_error(
+                HTTPStatus.NOT_FOUND,
+                "No such CGI script (%r)" % scriptname)
+            return
+        if not os.path.isfile(scriptfile):
+            self.send_error(
+                HTTPStatus.FORBIDDEN,
+                "CGI script is not a plain file (%r)" % scriptname)
+            return
+        ispy = self.is_python(scriptname)
+        if self.have_fork or not ispy:
+            if not self.is_executable(scriptfile):
+                self.send_error(
+                    HTTPStatus.FORBIDDEN,
+                    "CGI script is not executable (%r)" % scriptname)
+                return
+
+        # Reference: http://hoohoo.ncsa.uiuc.edu/cgi/env.html
+        # XXX Much of the following could be prepared ahead of time!
+        env = copy.deepcopy(os.environ)
+        env['SERVER_SOFTWARE'] = self.version_string()
+        env['SERVER_NAME'] = self.server.server_name
+        env['GATEWAY_INTERFACE'] = 'CGI/1.1'
+        env['SERVER_PROTOCOL'] = self.protocol_version
+        env['SERVER_PORT'] = str(self.server.server_port)
+        env['REQUEST_METHOD'] = self.command
+        uqrest = urllib.parse.unquote(rest)
+        env['PATH_INFO'] = uqrest
+        env['PATH_TRANSLATED'] = self.translate_path(uqrest)
+        env['SCRIPT_NAME'] = scriptname
+        if query:
+            env['QUERY_STRING'] = query
+        env['REMOTE_ADDR'] = self.client_address[0]
+        authorization = self.headers.get("authorization")
+        if authorization:
+            authorization = authorization.split()
+            if len(authorization) == 2:
+                import base64, binascii
+                env['AUTH_TYPE'] = authorization[0]
+                if authorization[0].lower() == "basic":
+                    try:
+                        authorization = authorization[1].encode('ascii')
+                        authorization = base64.decodebytes(authorization).\
+                                        decode('ascii')
+                    except (binascii.Error, UnicodeError):
+                        pass
+                    else:
+                        authorization = authorization.split(':')
+                        if len(authorization) == 2:
+                            env['REMOTE_USER'] = authorization[0]
+        # XXX REMOTE_IDENT
+        if self.headers.get('content-type') is None:
+            env['CONTENT_TYPE'] = self.headers.get_content_type()
+        else:
+            env['CONTENT_TYPE'] = self.headers['content-type']
+        length = self.headers.get('content-length')
+        if length:
+            env['CONTENT_LENGTH'] = length
+        referer = self.headers.get('referer')
+        if referer:
+            env['HTTP_REFERER'] = referer
+        accept = self.headers.get_all('accept', ())
+        env['HTTP_ACCEPT'] = ','.join(accept)
+        ua = self.headers.get('user-agent')
+        if ua:
+            env['HTTP_USER_AGENT'] = ua
+        co = filter(None, self.headers.get_all('cookie', []))
+        cookie_str = ', '.join(co)
+        if cookie_str:
+            env['HTTP_COOKIE'] = cookie_str
+        # XXX Other HTTP_* headers
+        # Since we're setting the env in the parent, provide empty
+        # values to override previously set values
+        for k in ('QUERY_STRING', 'REMOTE_HOST', 'CONTENT_LENGTH',
+                  'HTTP_USER_AGENT', 'HTTP_COOKIE', 'HTTP_REFERER'):
+            env.setdefault(k, "")
+
+        self.send_response(HTTPStatus.OK, "Script output follows")
+        self.flush_headers()
+
+        decoded_query = query.replace('+', ' ')
+
+        if self.have_fork:
+            # Unix -- fork as we should
+            args = [script]
+            if '=' not in decoded_query:
+                args.append(decoded_query)
+            nobody = nobody_uid()
+            self.wfile.flush() # Always flush before forking
+            pid = os.fork()
+            if pid != 0:
+                # Parent
+                pid, sts = os.waitpid(pid, 0)
+                # throw away additional data [see bug #427345]
+                while select.select([self.rfile], [], [], 0)[0]:
+                    if not self.rfile.read(1):
+                        break
+                exitcode = os.waitstatus_to_exitcode(sts)
+                if exitcode:
+                    self.log_error(f"CGI script exit code {exitcode}")
+                return
+            # Child
+            try:
+                try:
+                    os.setuid(nobody)
+                except OSError:
+                    pass
+                os.dup2(self.rfile.fileno(), 0)
+                os.dup2(self.wfile.fileno(), 1)
+                os.execve(scriptfile, args, env)
+            except:
+                self.server.handle_error(self.request, self.client_address)
+                os._exit(127)
+
+        else:
+            # Non-Unix -- use subprocess
+            import subprocess
+            cmdline = [scriptfile]
+            if self.is_python(scriptfile):
+                interp = sys.executable
+                if interp.lower().endswith("w.exe"):
+                    # On Windows, use python.exe, not pythonw.exe
+                    interp = interp[:-5] + interp[-4:]
+                cmdline = [interp, '-u'] + cmdline
+            if '=' not in query:
+                cmdline.append(query)
+            self.log_message("command: %s", subprocess.list2cmdline(cmdline))
+            try:
+                nbytes = int(length)
+            except (TypeError, ValueError):
+                nbytes = 0
+            p = subprocess.Popen(cmdline,
+                                 stdin=subprocess.PIPE,
+                                 stdout=subprocess.PIPE,
+                                 stderr=subprocess.PIPE,
+                                 env = env
+                                 )
+            if self.command.lower() == "post" and nbytes > 0:
+                data = self.rfile.read(nbytes)
+            else:
+                data = None
+            # throw away additional data [see bug #427345]
+            while select.select([self.rfile._sock], [], [], 0)[0]:
+                if not self.rfile._sock.recv(1):
+                    break
+            stdout, stderr = p.communicate(data)
+            self.wfile.write(stdout)
+            if stderr:
+                self.log_error('%s', stderr)
+            p.stderr.close()
+            p.stdout.close()
+            status = p.returncode
+            if status:
+                self.log_error("CGI script exit status %#x", status)
+            else:
+                self.log_message("CGI script exited OK")
+
+
+def _get_best_family(*address):
+    infos = socket.getaddrinfo(
+        *address,
+        type=socket.SOCK_STREAM,
+        flags=socket.AI_PASSIVE,
+    )
+    family, type, proto, canonname, sockaddr = next(iter(infos))
+    return family, sockaddr
+
+
+def test(HandlerClass=BaseHTTPRequestHandler,
+         ServerClass=ThreadingHTTPServer,
+         protocol="HTTP/1.0", port=8000, bind=None):
+    """Test the HTTP request handler class.
+
+    This runs an HTTP server on port 8000 (or the port argument).
+
+    """
+    ServerClass.address_family, addr = _get_best_family(bind, port)
+
+    HandlerClass.protocol_version = protocol
+    with ServerClass(addr, HandlerClass) as httpd:
+        host, port = httpd.socket.getsockname()[:2]
+        url_host = f'[{host}]' if ':' in host else host
+        print(
+            f"Serving HTTP on {host} port {port} "
+            f"(http://{url_host}:{port}/) ..."
+        )
+        try:
+            httpd.serve_forever()
+        except KeyboardInterrupt:
+            print("\nKeyboard interrupt received, exiting.")
+            sys.exit(0)
+
+if __name__ == '__main__':
+    import argparse
+
+    parser = argparse.ArgumentParser()
+    parser.add_argument('--cgi', action='store_true',
+                       help='Run as CGI Server')
+    parser.add_argument('--bind', '-b', metavar='ADDRESS',
+                        help='Specify alternate bind address '
+                             '[default: all interfaces]')
+    parser.add_argument('--directory', '-d', default=os.getcwd(),
+                        help='Specify alternative directory '
+                        '[default:current directory]')
+    parser.add_argument('port', action='store',
+                        default=8000, type=int,
+                        nargs='?',
+                        help='Specify alternate port [default: 8000]')
+    args = parser.parse_args()
+    if args.cgi:
+        handler_class = CGIHTTPRequestHandler
+    else:
+        handler_class = partial(SimpleHTTPRequestHandler,
+                                directory=args.directory)
+
+    # ensure dual-stack is not disabled; ref #38907
+    class DualStackServer(ThreadingHTTPServer):
+        def server_bind(self):
+            # suppress exception when protocol is IPv4
+            with contextlib.suppress(Exception):
+                self.socket.setsockopt(
+                    socket.IPPROTO_IPV6, socket.IPV6_V6ONLY, 0)
+            return super().server_bind()
+
+    test(
+        HandlerClass=handler_class,
+        ServerClass=DualStackServer,
+        port=args.port,
+        bind=args.bind,
+    )
diff --git a/ppt_control/ppt_control.py b/ppt_control/ppt_control.py
new file mode 100755
index 0000000..6b0f818
--- /dev/null
+++ b/ppt_control/ppt_control.py
@@ -0,0 +1,579 @@
+import sys
+sys.coinit_flags= 0
+import win32com.client
+import pywintypes
+import os
+import shutil
+#import http.server as server
+import socketserver
+import threading
+import asyncio
+import websockets
+import logging, logging.handlers
+import json
+import urllib
+import posixpath
+import time
+import pythoncom
+import pystray
+import tkinter as tk
+from tkinter import ttk
+from PIL import Image
+from copy import copy
+
+import ppt_control.http_server_39 as server
+import ppt_control.config as config
+
+logging.basicConfig()
+
+global http_daemon
+global ws_daemon
+global STATE
+global STATE_DEFAULT
+global current_slideshow
+global interface_root
+global logger
+global refresh_daemon
+global status_label
+global http_label
+global ws_label
+global http_server
+scheduler = None
+current_slideshow = None
+CACHEDIR = r'''C:\Windows\Temp\ppt-cache'''
+interface_root = None
+CONFIG_FILE = r'''..\ppt-control.ini'''
+LOGFILE = r'''..\ppt-control.log'''
+logger = None
+refresh_daemon = None
+status_label = None
+http_label = None
+ws_label = None
+ws_daemon = None
+http_server = None
+
+
+class Handler(server.SimpleHTTPRequestHandler):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, directory=os.path.dirname(os.path.realpath(__file__)) + r'''\static''')
+        
+    def translate_path(self, path):
+        """Translate a /-separated PATH to the local filename syntax.
+
+        Components that mean special things to the local file system
+        (e.g. drive or directory names) are ignored.  (XXX They should
+        probably be diagnosed.)
+
+        """
+        # abandon query parameters
+        path = path.split('?',1)[0]
+        path = path.split('#',1)[0]
+        # Don't forget explicit trailing slash when normalizing. Issue17324
+        trailing_slash = path.rstrip().endswith('/')
+        try:
+            path = urllib.parse.unquote(path, errors='surrogatepass')
+        except UnicodeDecodeError:
+            path = urllib.parse.unquote(path)
+        path = posixpath.normpath(path)
+        words = path.split('/')
+        words = list(filter(None, words))
+        if len(words) > 0 and words[0] == "cache":
+            black = 0
+            if current_slideshow:
+                try:
+                    path = CACHEDIR + "\\" + current_slideshow.name()
+                except Exception as e:
+                    path = os.path.join(os.path.dirname(os.path.realpath(__file__)), r'''\static\black.jpg''') + '/'
+                    logger.warning("Failed to get current slideshow name: ", e)
+            else:
+                path = os.path.join(os.path.dirname(os.path.realpath(__file__)), r'''\static\black.jpg''') + '/'
+                return path
+            words.pop(0)
+        else:
+            path = self.directory
+        for word in words:
+            if os.path.dirname(word) or word in (os.curdir, os.pardir):
+                # Ignore components that are not a simple file/directory name
+                continue
+            path = os.path.join(path, word)
+        if trailing_slash:
+            path += '/'
+        return path
+
+
+def run_http():
+    global http_server
+    http_server = server.HTTPServer(("", 80), Handler)
+    http_server.serve_forever()
+
+STATE_DEFAULT = {"connected": 0, "current": 0, "total": 0, "visible": 0, "name": ""}
+STATE = copy(STATE_DEFAULT)
+USERS = set()
+
+
+def state_event():
+    return json.dumps({"type": "state", **STATE})
+
+
+def users_event():
+    return json.dumps({"type": "users", "count": len(USERS)})
+
+
+async def notify_state():
+    global STATE
+    if current_slideshow and STATE["connected"] == 1:
+        try:
+            STATE["current"] = current_slideshow.current_slide()
+            STATE["total"] = current_slideshow.total_slides()
+            STATE["visible"] = current_slideshow.visible()
+            STATE["name"] = current_slideshow.name()
+        except Exception as e:
+            logger.info("Failed to update state variables, presumably PPT instance doesn't exist anymore: {}".format(e))
+            current_slideshow.unload()
+    else:
+        STATE = copy(STATE_DEFAULT)
+    if USERS:  # asyncio.wait doesn't accept an empty list
+        message = state_event()
+        await asyncio.wait([user.send(message) for user in USERS])
+
+
+async def notify_users():
+    if USERS:  # asyncio.wait doesn't accept an empty list
+        message = users_event()
+        await asyncio.wait([user.send(message) for user in USERS])
+
+
+async def register(websocket):
+    USERS.add(websocket)
+    await notify_users()
+
+
+async def unregister(websocket):
+    USERS.remove(websocket)
+    await notify_users()
+
+
+async def ws_handle(websocket, path):
+    logger.debug("Received websocket request")
+    global current_slideshow
+    # register(websocket) sends user_event() to websocket
+    await register(websocket)
+    try:
+        await websocket.send(state_event())
+        async for message in websocket:
+            data = json.loads(message)
+            if data["action"] == "prev":
+                if current_slideshow:
+                    current_slideshow.prev()
+                await notify_state()
+            elif data["action"] == "next":
+                if current_slideshow:
+                    current_slideshow.next()
+                await notify_state()
+            elif data["action"] == "first":
+                if current_slideshow:
+                    current_slideshow.first()
+                await notify_state()
+            elif data["action"] == "last":
+                if current_slideshow:
+                    current_slideshow.last()
+                await notify_state()
+            elif data["action"] == "black":
+                if current_slideshow:
+                    if current_slideshow.visible() == 3:
+                        current_slideshow.normal()
+                    else:
+                        current_slideshow.black()
+                await notify_state()
+            elif data["action"] == "white":
+                if current_slideshow:
+                    if current_slideshow.visible() == 4:
+                        current_slideshow.normal()
+                    else:
+                        current_slideshow.white()
+                await notify_state()
+            elif data["action"] == "goto":
+                if current_slideshow:
+                    current_slideshow.goto(int(data["value"]))
+                await notify_state()
+            elif data["action"] == "refresh":
+                await notify_state()
+                if current_slideshow:
+                    current_slideshow.export_current_next()
+                    current_slideshow.refresh()
+            else:
+                logger.error("unsupported event: {}", data)
+    finally:
+        await unregister(websocket)
+
+def run_ws():
+    # https://stackoverflow.com/questions/21141217/how-to-launch-win32-applications-in-separate-threads-in-python/22619084#22619084
+    # https://www.reddit.com/r/learnpython/comments/mwt4qi/pywintypescom_error_2147417842_the_application/
+    pythoncom.CoInitializeEx(pythoncom.COINIT_MULTITHREADED)
+    asyncio.set_event_loop(asyncio.new_event_loop())
+    #start_server = websockets.serve(ws_handle, "0.0.0.0", 5678, ping_interval=None)
+    start_server = websockets.serve(ws_handle, "0.0.0.0", 5678)
+    asyncio.get_event_loop().run_until_complete(start_server)
+    asyncio.get_event_loop().run_forever()
+
+def start_http():
+    http_daemon = threading.Thread(name="http_daemon", target=run_http)
+    http_daemon.setDaemon(True)
+    http_daemon.start()
+    logger.info("Started HTTP server")
+
+def restart_http():
+    global http_server
+    if http_server:
+        http_server.shutdown()
+        http_server = None
+        refresh_status()
+    start_http()
+    refresh_status()
+
+def start_ws():
+    global ws_daemon
+    ws_daemon = threading.Thread(name="ws_daemon", target=run_ws)
+    ws_daemon.setDaemon(True)
+    ws_daemon.start()
+    logger.info("Started websocket server")
+
+class Slideshow:
+    def __init__(self, instance):
+        self.instance = instance
+        if self.instance is None:
+            raise ValueError("PPT instance cannot be None")
+
+        if self.instance.SlideShowWindows.Count == 0:
+            raise ValueError("PPT instance has no slideshow windows")
+        self.view = self.instance.SlideShowWindows[0].View
+
+        if self.instance.ActivePresentation is None:
+            raise ValueError("PPT instance has no  active presentation")
+        self.presentation = self.instance.ActivePresentation
+
+        self.export_current_next()
+
+    def unload(self):
+        connect_ppt()
+
+    def refresh(self):
+        logger.debug("Refreshing")
+        try:
+            if self.instance is None:
+                raise ValueError("PPT instance cannot be None")
+
+            if self.instance.SlideShowWindows.Count == 0:
+                raise ValueError("PPT instance has no slideshow windows")
+            self.view = self.instance.SlideShowWindows[0].View
+
+            if self.instance.ActivePresentation is None:
+                raise ValueError("PPT instance has no  active presentation")
+        except:
+            self.unload()
+
+    def total_slides(self):
+        try:
+            self.refresh()
+            return len(self.presentation.Slides)
+        except (ValueError, pywintypes.com_error):
+            self.unload()
+
+    def current_slide(self):
+        try:
+            self.refresh()
+            return self.view.CurrentShowPosition
+        except (ValueError, pywintypes.com_error):
+            self.unload()
+
+    def visible(self):
+        try:
+            self.refresh()
+            return self.view.State
+        except (ValueError, pywintypes.com_error):
+            self.unload()
+
+    def prev(self):
+        try:
+            self.refresh()
+            self.view.Previous()
+            self.export_current_next()
+        except (ValueError, pywintypes.com_error):
+            self.unload()
+
+    def next(self):
+        try:
+            self.refresh()
+            self.view.Next()
+            self.export_current_next()
+        except (ValueError, pywintypes.com_error):
+            self.unload()
+
+    def first(self):
+        try:
+            self.refresh()
+            self.view.First()
+            self.export_current_next()
+        except (ValueError, pywintypes.com_error):
+            self.unload()
+                
+    def last(self):
+        try:
+            self.refresh()
+            self.view.Last()
+            self.export_current_next()
+        except (ValueError, pywintypes.com_error):
+            self.unload()
+
+    def goto(self, slide):
+        try:
+            self.refresh()
+            if slide <= self.total_slides():
+                self.view.GotoSlide(slide)
+            else:
+                self.last()
+                self.next()
+            self.export_current_next()
+        except (ValueError, pywintypes.com_error):
+            self.unload()
+
+    def black(self):
+        try:
+            self.refresh()
+            self.view.State = 3
+            self.export_current_next()
+        except (ValueError, pywintypes.com_error):
+            self.unload()
+
+    def white(self):
+        try:
+            self.refresh()
+            self.view.State = 4
+            self.export_current_next()
+        except (ValueError, pywintypes.com_error):
+            self.unload()
+
+    def normal(self):
+        try:
+            self.refresh()
+            self.view.State = 1
+            self.export_current_next()
+        except (ValueError, pywintypes.com_error):
+            self.unload()
+
+    def name(self):
+        try:
+            self.refresh()
+            return self.presentation.Name
+        except (ValueError, pywintypes.com_error):
+            self.unload()
+
+
+    def export_current_next(self):
+        self.export(self.current_slide())
+        self.export(self.current_slide() + 1)
+        self.export(self.current_slide() + 2)
+
+    def export(self, slide):
+        destination = CACHEDIR + "\\" + self.name() + "\\" + str(slide) + ".jpg"
+        os.makedirs(os.path.dirname(destination), exist_ok=True)
+        if not os.path.exists(destination) or time.time() - os.path.getmtime(destination) > config.prefs.getint("Main", "cache_timeout"):
+            if slide <= self.total_slides():
+                attempts = 0
+                while attempts < 3:
+                    try:
+                        self.presentation.Slides(slide).Export(destination, "JPG")
+                        break
+                    except:
+                        pass
+                    attempts += 1
+            elif slide == self.total_slides() + 1:
+                shutil.copyfileobj(open(os.path.dirname(os.path.realpath(__file__)), r'''\static\black.jpg''', 'rb'), open(destination, 'wb'))
+            else:
+                pass
+
+    def export_all(self):
+        for i in range(1, self.total_slides()):
+            self.export(i)
+
+def get_ppt_instance():
+    instance = win32com.client.Dispatch('Powerpoint.Application')
+    if instance is None or instance.SlideShowWindows.Count == 0:
+        return None
+    return instance
+
+def get_current_slideshow():
+    return current_slideshow
+
+def refresh_interval():
+    while getattr(refresh_daemon, "do_run", True):
+        logger.debug("Triggering server-side refresh")
+        current_slideshow.refresh()
+        refresh_status()
+        time.sleep(1)
+
+def refresh_status():
+    if status_label is not None:
+        status_label.config(text="PowerPoint status: " + ("not " if not STATE["connected"] else "") +  "connected")
+        http_label.config(text="HTTP server: " + ("not " if http_server is None else "") +  "running")
+        #ws_label.config(text="WebSocket server: " + ("not " if ws_daemon is not None or not ws_daemon.is_alive() else "") +  "running")
+
+def connect_ppt():
+    global STATE
+    global refresh_daemon
+    if STATE["connected"] == 1:
+        logger.info("Disconnected from PowerPoint instance")
+        refresh_daemon.do_run = False
+        STATE = copy(STATE_DEFAULT)
+        refresh_status()
+        logger.debug("State is now " + str(STATE))
+    while True:
+        try:
+            instance = get_ppt_instance()
+            global current_slideshow
+            current_slideshow = Slideshow(instance)
+            STATE["connected"] = 1
+            STATE["current"] = current_slideshow.current_slide()
+            STATE["total"] = current_slideshow.total_slides()
+            refresh_status()
+            logger.info("Connected to PowerPoint instance")
+            refresh_daemon = threading.Thread(name="refresh_daemon", target=refresh_interval)
+            refresh_daemon.setDaemon(True)
+            refresh_daemon.start()
+            break
+        except ValueError as e:
+            current_slideshow = None
+            pass
+        time.sleep(1)
+
+def start(_=None):
+    start_http()
+    start_ws()
+    connect_ppt()
+
+def on_closing():
+    global status_label
+    global http_label
+    global ws_label
+    status_label = None
+    http_label = None
+    ws_label = None
+    interface_root.destroy()
+    
+def open_settings(_=None):
+    global interface_root
+    interface_root = tk.Tk()
+    interface_root.protocol("WM_DELETE_WINDOW", on_closing)
+    interface_root.iconphoto(False, tk.PhotoImage(file="static/icons/ppt.png"))
+    interface_root.geometry("600x300+300+300")
+    app = Interface(interface_root)
+    interface_thread = threading.Thread(target=interface_root.mainloop())
+    interface_thread.setDaemon(True)
+    interface_thread.start()
+
+def null_action():
+    pass
+
+def save_settings():
+    pass
+
+class Interface(ttk.Frame):
+
+    def __init__(self, parent):
+        ttk.Frame.__init__(self, parent)
+
+        self.parent = parent
+
+        self.initUI()
+
+    def initUI(self):
+        global status_label
+        global http_label
+        global ws_label
+        self.parent.title("ppt-control")
+        self.style = ttk.Style()
+        #self.style.theme_use("default")
+        self.focus_force()
+
+        self.pack(fill=tk.BOTH, expand=1)
+
+        quitButton = ttk.Button(self, text="Cancel", command=interface_root.destroy)
+        quitButton.place(x=480, y=280)
+
+        save_button = ttk.Button(self, text="OK", command=save_settings)
+        save_button.place(x=400, y=280)
+
+        reset_ppt_button = ttk.Button(self, text="Reconnect", command=connect_ppt)
+        reset_ppt_button.place(x=300, y=10)
+
+        reset_http_button = ttk.Button(self, text="Restart", command=restart_http)
+        reset_http_button.place(x=300, y=30)
+
+        reset_ws_button = ttk.Button(self, text="Restart", command=null_action)
+        reset_ws_button.place(x=300, y=50)
+
+        status_label = ttk.Label(self)
+        status_label.place(x=10,y=10)
+
+        http_label = ttk.Label(self)
+        http_label.place(x=10,y=30)
+
+        ws_label = ttk.Label(self)
+        ws_label.place(x=10,y=50)
+
+        refresh_status()
+        
+        
+
+def show_icon():
+    logger.debug("Starting system tray icon")
+    menu = (pystray.MenuItem("Status", lambda: null_action(), enabled=False),
+            pystray.MenuItem("Restart", lambda: start()),
+            pystray.MenuItem("Settings", lambda: open_settings()))
+    icon = pystray.Icon("ppt-control", Image.open(os.path.dirname(os.path.realpath(__file__)) + r'''\static\icons\ppt.ico'''), "ppt-control", menu)
+    icon.visible = True
+    icon.run(setup=start)
+
+def start_interface():
+    global logger
+
+    # Load config
+    config.prefs = config.loadconf(CONFIG_FILE)
+
+    # Set up logging
+    if config.prefs["Main"]["logging"] == "debug":
+        log_level = logging.DEBUG
+    elif config.prefs["Main"]["logging"] == "info":
+        log_level = logging.CRITICAL
+    else:
+        log_level = logging.WARNING
+    log_level = logging.DEBUG
+
+    log_formatter = logging.Formatter("%(asctime)s [%(threadName)-12.12s] [%(levelname)-7.7s]  %(message)s")
+    logger = logging.getLogger("ppt-control")
+    logger.setLevel(log_level)
+    logger.propagate = False
+
+    file_handler = logging.FileHandler("{0}/{1}".format(os.getenv("APPDATA"), LOGFILE))
+    file_handler.setFormatter(log_formatter)
+    file_handler.setLevel(log_level)
+    logger.addHandler(file_handler)
+
+    console_handler = logging.StreamHandler()
+    console_handler.setFormatter(log_formatter)
+    console_handler.setLevel(log_level)
+    logger.addHandler(console_handler)
+
+    logging.getLogger("asyncio").setLevel(logging.ERROR)
+    logging.getLogger("asyncio.coroutines").setLevel(logging.ERROR)
+    logging.getLogger("websockets.server").setLevel(logging.ERROR)
+    logging.getLogger("websockets.protocol").setLevel(logging.ERROR)
+
+
+    logger.debug("Finished setting up config and logging")
+
+    # Start systray icon and server
+    show_icon()
+
+if __name__ == "__main__":
+    start_interface()
diff --git a/ppt_control/ppt_control_obs.py b/ppt_control/ppt_control_obs.py
new file mode 100755
index 0000000..e36957e
--- /dev/null
+++ b/ppt_control/ppt_control_obs.py
@@ -0,0 +1,175 @@
+# -*- coding: utf-8 -*-
+
+import obspython as obs
+import asyncio
+import websockets
+import threading
+from time import sleep
+
+PORT_DEFAULT = 5678
+HOSTNAME_DEFAULT = "localhost"
+
+hotkey_id_first = None
+hotkey_id_prev = None
+hotkey_id_next = None
+hotkey_id_last = None
+hotkey_id_black = None
+hotkey_id_white = None
+
+HOTKEY_NAME_FIRST = 'powerpoint_slides.first'
+HOTKEY_NAME_PREV = 'powerpoint_slides.previous'
+HOTKEY_NAME_NEXT = 'powerpoint_slides.next'
+HOTKEY_NAME_LAST = 'powerpoint_slides.last'
+HOTKEY_NAME_BLACK = 'powerpoint_slides.black'
+HOTKEY_NAME_WHITE = 'powerpoint_slides.white'
+
+HOTKEY_DESC_FIRST = 'First PowerPoint slide'
+HOTKEY_DESC_PREV = 'Previous PowerPoint slide'
+HOTKEY_DESC_NEXT = 'Next PowerPoint slide'
+HOTKEY_DESC_LAST = 'Last PowerPoint slide'
+HOTKEY_DESC_BLACK = 'Black PowerPoint slide'
+HOTKEY_DESC_WHITE = 'White PowerPoint slide'
+
+global cmd
+global attempts
+cmd = ""
+hostname = HOSTNAME_DEFAULT
+port = PORT_DEFAULT
+attempts = 0
+
+async def communicate():
+    async with websockets.connect("ws://%s:%s" % (hostname, port), ping_interval=None) as websocket:
+        global cmd
+        global attempts 
+        while True:
+            if cmd:
+                try:
+                    await websocket.send('{"action": "%s"}' % cmd)
+                    cmd = ""
+                except websockets.ConnectionClosed as exc:
+                    attempts += 1
+                    if attempts == 4:
+                        print("Failed to send command after {} attempts - aborting connection".format(attempts))
+                        attempts = 0
+                        cmd = ""
+                        raise websockets.exceptions.ConnectionClosedError(1006, "Sending command failed after {} attempts".format(attempts))
+            await asyncio.sleep(0.05 + 0.5*attempts**2)
+
+def run_ws():
+    while True:
+        try:
+            asyncio.set_event_loop(asyncio.new_event_loop())
+            asyncio.get_event_loop().run_until_complete(communicate())
+        except (OSError, websockets.exceptions.ConnectionClosedError):
+            # No server available - just keep trying
+            pass
+        except Exception as e:
+            print("Failed to connect to websocket: {} - {}".format(type(e), e))
+        finally:
+            sleep(1)
+
+#------------------------------------------------------------
+# global functions for script plugins
+
+def script_load(settings):
+    global hotkey_id_first
+    global hotkey_id_prev
+    global hotkey_id_next
+    global hotkey_id_last
+    global hotkey_id_black
+    global hotkey_id_white
+
+    hotkey_id_first = register_and_load_hotkey(settings, HOTKEY_NAME_FIRST, HOTKEY_DESC_FIRST, first_slide)
+    hotkey_id_prev = register_and_load_hotkey(settings, HOTKEY_NAME_PREV, HOTKEY_DESC_PREV, prev_slide)
+    hotkey_id_next = register_and_load_hotkey(settings, HOTKEY_NAME_NEXT, HOTKEY_DESC_NEXT, next_slide)
+    hotkey_id_last = register_and_load_hotkey(settings, HOTKEY_NAME_LAST, HOTKEY_DESC_LAST, last_slide)
+    hotkey_id_black = register_and_load_hotkey(settings, HOTKEY_NAME_BLACK, HOTKEY_DESC_BLACK, black)
+    hotkey_id_white = register_and_load_hotkey(settings, HOTKEY_NAME_WHITE, HOTKEY_DESC_WHITE, white)
+
+    ws_daemon = threading.Thread(name="ws_daemon", target=run_ws)
+    ws_daemon.setDaemon(True)
+    ws_daemon.start()
+    print("Started websocket client")
+
+def script_unload():
+    obs.obs_hotkey_unregister(first_slide)
+    obs.obs_hotkey_unregister(prev_slide)
+    obs.obs_hotkey_unregister(next_slide)
+    obs.obs_hotkey_unregister(last_slide)
+    obs.obs_hotkey_unregister(black)
+    obs.obs_hotkey_unregister(white)
+
+def script_save(settings):
+    save_hotkey(settings, HOTKEY_NAME_FIRST, hotkey_id_first)
+    save_hotkey(settings, HOTKEY_NAME_PREV, hotkey_id_prev)
+    save_hotkey(settings, HOTKEY_NAME_NEXT, hotkey_id_next)
+    save_hotkey(settings, HOTKEY_NAME_LAST, hotkey_id_last)
+    save_hotkey(settings, HOTKEY_NAME_BLACK, hotkey_id_black)
+    save_hotkey(settings, HOTKEY_NAME_WHITE, hotkey_id_white)
+
+def script_description():
+    return """ppt-control client
+
+    Provides hotkeys for controlling PowerPoint slides using websockets.
+    Go to OBS settings -> Hotkeys to change hotkeys (none set by default)."""
+
+def script_defaults(settings):
+    obs.obs_data_set_default_string(settings, 'hostname', HOSTNAME_DEFAULT)
+    obs.obs_data_set_default_int(settings, 'port', PORT_DEFAULT)
+
+def script_properties():
+    props = obs.obs_properties_create()
+
+    obs.obs_properties_add_text(props, "hostname", "Hostname: ", obs.OBS_TEXT_DEFAULT)
+    obs.obs_properties_add_int(props, "port", "Port: ", 0, 9999, 1)
+    return props
+
+def script_update(settings):
+    global port
+    port = obs.obs_data_get_int(settings, "port")
+    hostname = obs.obs_data_get_string(settings, "hostname")
+
+def register_and_load_hotkey(settings, name, description, callback):
+    hotkey_id = obs.obs_hotkey_register_frontend(name, description, callback)
+    hotkey_save_array = obs.obs_data_get_array(settings, name)
+    obs.obs_hotkey_load(hotkey_id, hotkey_save_array)
+    obs.obs_data_array_release(hotkey_save_array)
+
+    return hotkey_id
+
+def save_hotkey(settings, name, hotkey_id):
+    hotkey_save_array = obs.obs_hotkey_save(hotkey_id)
+    obs.obs_data_set_array(settings, name, hotkey_save_array)
+    obs.obs_data_array_release(hotkey_save_array)
+
+#-------------------------------------
+
+def first_slide(pressed):
+    if pressed:
+        global cmd
+        cmd = "first"
+
+def prev_slide(pressed):
+    if pressed:
+        global cmd
+        cmd = "prev"
+
+def next_slide(pressed):
+    if pressed:
+        global cmd
+        cmd = "next"
+
+def last_slide(pressed):
+    if pressed:
+        global cmd
+        cmd = "last"
+
+def black(pressed):
+    if pressed:
+        global cmd
+        cmd = "black"
+
+def white(pressed):
+    if pressed:
+        global cmd
+        cmd = "white"
diff --git a/ppt_control/static/black.jpg b/ppt_control/static/black.jpg
new file mode 100755
index 0000000..7b05935
Binary files /dev/null and b/ppt_control/static/black.jpg differ
diff --git a/ppt_control/static/icons/first.svg b/ppt_control/static/icons/first.svg
new file mode 100644
index 0000000..8d0f155
--- /dev/null
+++ b/ppt_control/static/icons/first.svg
@@ -0,0 +1 @@
+<svg aria-hidden="true" focusable="false" data-prefix="fas" data-icon="step-backward" class="svg-inline--fa fa-step-backward fa-w-14" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path fill="currentColor" d="M64 468V44c0-6.6 5.4-12 12-12h48c6.6 0 12 5.4 12 12v176.4l195.5-181C352.1 22.3 384 36.6 384 64v384c0 27.4-31.9 41.7-52.5 24.6L136 292.7V468c0 6.6-5.4 12-12 12H76c-6.6 0-12-5.4-12-12z"></path></svg>
\ No newline at end of file
diff --git a/ppt_control/static/icons/last.svg b/ppt_control/static/icons/last.svg
new file mode 100644
index 0000000..7064515
--- /dev/null
+++ b/ppt_control/static/icons/last.svg
@@ -0,0 +1 @@
+<svg aria-hidden="true" focusable="false" data-prefix="fas" data-icon="step-forward" class="svg-inline--fa fa-step-forward fa-w-14" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 448 512"><path fill="currentColor" d="M384 44v424c0 6.6-5.4 12-12 12h-48c-6.6 0-12-5.4-12-12V291.6l-195.5 181C95.9 489.7 64 475.4 64 448V64c0-27.4 31.9-41.7 52.5-24.6L312 219.3V44c0-6.6 5.4-12 12-12h48c6.6 0 12 5.4 12 12z"></path></svg>
\ No newline at end of file
diff --git a/ppt_control/static/icons/left.svg b/ppt_control/static/icons/left.svg
new file mode 100644
index 0000000..acb94c1
--- /dev/null
+++ b/ppt_control/static/icons/left.svg
@@ -0,0 +1 @@
+<svg aria-hidden="true" focusable="false" data-prefix="fas" data-icon="chevron-circle-left" class="svg-inline--fa fa-chevron-circle-left fa-w-16" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path fill="currentColor" d="M256 504C119 504 8 393 8 256S119 8 256 8s248 111 248 248-111 248-248 248zM142.1 273l135.5 135.5c9.4 9.4 24.6 9.4 33.9 0l17-17c9.4-9.4 9.4-24.6 0-33.9L226.9 256l101.6-101.6c9.4-9.4 9.4-24.6 0-33.9l-17-17c-9.4-9.4-24.6-9.4-33.9 0L142.1 239c-9.4 9.4-9.4 24.6 0 34z"></path></svg>
\ No newline at end of file
diff --git a/ppt_control/static/icons/ppt.ico b/ppt_control/static/icons/ppt.ico
new file mode 100644
index 0000000..460c2ef
Binary files /dev/null and b/ppt_control/static/icons/ppt.ico differ
diff --git a/ppt_control/static/icons/ppt.png b/ppt_control/static/icons/ppt.png
new file mode 100755
index 0000000..841b67b
Binary files /dev/null and b/ppt_control/static/icons/ppt.png differ
diff --git a/ppt_control/static/icons/right.svg b/ppt_control/static/icons/right.svg
new file mode 100644
index 0000000..a9e5aa7
--- /dev/null
+++ b/ppt_control/static/icons/right.svg
@@ -0,0 +1 @@
+<svg aria-hidden="true" focusable="false" data-prefix="fas" data-icon="chevron-circle-right" class="svg-inline--fa fa-chevron-circle-right fa-w-16" role="img" xmlns="http://www.w3.org/2000/svg" viewBox="0 0 512 512"><path fill="currentColor" d="M256 8c137 0 248 111 248 248S393 504 256 504 8 393 8 256 119 8 256 8zm113.9 231L234.4 103.5c-9.4-9.4-24.6-9.4-33.9 0l-17 17c-9.4 9.4-9.4 24.6 0 33.9L285.1 256 183.5 357.6c-9.4 9.4-9.4 24.6 0 33.9l17 17c9.4 9.4 24.6 9.4 33.9 0L369.9 273c9.4-9.4 9.4-24.6 0-34z"></path></svg>
\ No newline at end of file
diff --git a/ppt_control/static/index.html b/ppt_control/static/index.html
new file mode 100755
index 0000000..b19415f
--- /dev/null
+++ b/ppt_control/static/index.html
@@ -0,0 +1,49 @@
+<!DOCTYPE html>
+<html>
+	<head>
+    	<link href="style.css" rel="stylesheet" type="text/css" media="all" />
+    	<script src="settings.js"></script>
+        <meta name="viewport" content="width=device-width, initial-scale=1" />
+        <title>ppt-control</title>
+    </head>
+    <body onload="initSettings();">
+
+    	<div id="img_container">
+
+        	<div id="current_div">
+        		<h1>Current slide</h1>
+        		<img id="current_img" src="/black.jpg" />
+        	</div>
+
+        	<div id="next_div">
+        		<h1>Next slide</h1>
+        		<img id="next_img" src="/black.jpg" />
+        	</div>
+
+        </div>
+
+		<div id="controls_container">
+			<div id="controls_container_inner">
+        		<p>
+        			<img class="icon" id="first" src="icons/first.svg" />
+        			<img class="icon" id="prev" src="icons/left.svg" />
+        			<img class="icon" id="next" src="icons/right.svg" />
+        			<img class="icon" id="last" src="icons/last.svg" />
+                                <span id="count"><span id="slide_label">Current: </span><input type="text" id="current"></input>/<span id="total">?</span></span>
+        			<button id="black">Black</button>
+        			<button id="white">White</button>
+        		</p>
+
+        		<input type="checkbox" checked="true" id="show_current">Show current slide</input>
+        		<input type="checkbox" checked="true" id="show_next">Show next slide</input>
+        		<input type="checkbox" checked="true" id="shortcuts">Keyboard shortcuts</input>
+
+        		<p class="users">Not connected</p>
+        	</div>
+        </div>
+
+		<img id="preload_img" style="display: none;" />
+    	<script src="ppt-control.js"></script>
+
+    </body>
+</html>
diff --git a/ppt_control/static/ppt-control.js b/ppt_control/static/ppt-control.js
new file mode 100644
index 0000000..9bba171
--- /dev/null
+++ b/ppt_control/static/ppt-control.js
@@ -0,0 +1,240 @@
+var DEFAULT_TITLE = "ppt-control"
+var preloaded = false;
+var preload = [];
+
+function imageRefresh(id) {
+    img = document.getElementById(id);
+    var d = new Date;
+    var http = img.src;
+    if (http.indexOf("?t=") != -1) { http = http.split("?t=")[0]; } 
+    img.src = http + '?t=' + d.getTime();
+}
+
+function startWebsocket() {
+    ws = new WebSocket("ws://" + window.location.host + ":5678/");
+    ws.onclose = function(){
+        //websocket = null;
+        setTimeout(function(){startWebsocket()}, 10000);
+    }
+    return ws;
+}
+
+var websocket = startWebsocket();
+
+var prev = document.querySelector('#prev'),
+    next = document.querySelector('#next'),
+    first = document.querySelector('#first'),
+    last = document.querySelector('#last'),
+    black = document.querySelector('#black'),
+    white = document.querySelector('#white'),
+    slide_label = document.querySelector('#slide_label'),
+    current = document.querySelector('#current'),
+    total = document.querySelector('#total'),
+    users = document.querySelector('.users'),
+    current_img = document.querySelector('#current_img'),
+    next_img = document.querySelector('#next_img'),
+    current_div = document.querySelector('#current_div'),
+    next_div = document.querySelector('#next_div'),
+    controls_container = document.querySelector('#controls_container'),
+    controls_container_inner = document.querySelector('#controls_container_inner'),
+    show_current = document.querySelector('#show_current'),
+    show_next = document.querySelector('#show_next'),
+    shortcuts = document.querySelector('#shortcuts');
+
+prev.onclick = function (event) {
+    websocket.send(JSON.stringify({action: 'prev'}));
+}
+
+next.onclick = function (event) {
+    websocket.send(JSON.stringify({action: 'next'}));
+}
+
+first.onclick = function (event) {
+    websocket.send(JSON.stringify({action: 'first'}));
+}
+
+last.onclick = function (event) {
+    websocket.send(JSON.stringify({action: 'last'}));
+}
+
+black.onclick = function (event) {
+    websocket.send(JSON.stringify({action: 'black'}));
+}
+
+white.onclick = function (event) {
+    websocket.send(JSON.stringify({action: 'white'}));
+}
+
+current.onblur = function (event) {
+    websocket.send(JSON.stringify({action: 'goto', value: current.value}));
+}
+
+current.addEventListener('keyup',function(e){
+    if (e.which == 13) this.blur();
+});
+
+current_img.onclick = function (event) {
+	next.click()
+}
+
+next_img.onclick = function (event) {
+	next.click()
+}
+
+
+function sync_current() {
+    if (show_current.checked) {
+        current_div.style.display = "block";
+        slide_label.style.display = "none";
+        next_div.style.width = "25%";
+    } else {
+        current_div.style.display = "none";
+        slide_label.style.display = "inline";
+        next_div.style.width = "calc(100% - 20px)";
+    }
+    set_control_width();
+    saveSettings();
+}
+show_current.onclick = sync_current;
+
+function sync_next() {
+    if (show_next.checked) {
+        next_div.style.display = "block";
+        current_div.style.width = "70%";
+    } else {
+        next_div.style.display = "none";
+        current_div.style.width = "calc(100% - 20px)";
+    }
+    set_control_width();
+    saveSettings();
+}
+show_next.onclick = sync_next;
+
+function sync_shortcuts() {
+  saveSettings();
+}
+shortcuts.onclick = sync_shortcuts;
+
+function set_control_width() {
+	var width = window.innerWidth
+	|| document.documentElement.clientWidth
+	|| document.body.clientWidth;
+    if (show_current.checked && show_next.checked && width > 800) {
+        controls_container_inner.style.width = "70%"
+    } else {
+    	controls_container_inner.style.width = "100%"
+    }
+}
+
+
+document.addEventListener('keydown', function (e) {
+	if (shortcuts.checked) {
+		switch (e.key) {
+			case "Left":
+			case "ArrowLeft":
+			case "Up":
+			case "ArrowUp":
+			case "k":
+			case "K":
+				prev.click();
+				break;
+			case " ":
+			case "Spacebar":
+			case "Enter":
+			case "Right":
+			case "ArrowRight":
+			case "Down":
+			case "ArrowDown":
+			case "j":
+			case "J":
+				next.click();
+				break;
+			case "b":
+			case "B":
+				black.click();
+			case "w":
+			case "W":
+				white.click();
+			default:
+				return
+		}
+	}
+});
+
+function sleep(ms) {
+      return new Promise(resolve => setTimeout(resolve, ms));
+}
+
+function disconnect() {
+	document.title = DEFAULT_TITLE;
+    current_img.src = "/black.jpg";
+    next_img.src = "/black.jpg";
+    users.textContent = "Connection to PowerPoint failed";
+}
+
+websocket.onmessage = function (event) {
+	console.log("Received data");
+    data = JSON.parse(event.data);
+    switch (data.type) {
+        case 'state':
+            if (data.connected == "0" || data.connected == 0) {
+				console.log("Disconnected");
+            	disconnect();
+            	break;
+            }
+            var d = new Date;
+            switch (data.visible) {
+                case 3:
+                    current_img.src = "/black.jpg";
+                    break;
+                case 4:
+                    current_img.src = "/white.jpg";
+                    break;
+                default:
+                    //current_img.src = "/cache/" + data.current + ".jpg?t=" + d.getTime();
+                    current_img.src = "/cache/" + data.current + ".jpg";
+                    break;
+            }
+            if (data.current == data.total + 1) { 
+                //next_img.src = "/cache/" + (data.total + 1) + ".jpg?t=" + d.getTime();
+                next_img.src = "/cache/" + (data.total + 1) + ".jpg";
+            } else {
+                //next_img.src = "/cache/" + (data.current + 1) + ".jpg?t=" + d.getTime();
+                next_img.src = "/cache/" + (data.current + 1) + ".jpg";
+            }
+
+			if (document.activeElement != current) {
+            	current.value = data.current;
+            }
+            total.textContent = data.total;
+            document.title = data.name;
+            break;
+        case 'users':
+            users.textContent = (
+                data.count.toString() + " client" +
+                (data.count == 1 ? "" : "s"));
+            break;
+        default:
+            console.error(
+                "unsupported event", data);
+    }
+	if (preloaded == false && ! isNaN(total.textContent)) {
+		image = document.getElementById("preload_img");
+		for (let i=1; i<=Number(total.textContent); i++) {
+			image.src = "/cache/" + i + ".jpg";
+			preload.push(image);
+    		console.log("Preloaded " + total.textContent);
+			//sleep(0.5)
+		}
+		preloaded = true;
+	}
+
+};
+
+var interval = setInterval(refresh, 1000);
+
+function refresh() {
+	console.log("Refreshing")
+    websocket.send(JSON.stringify({action: 'refresh'}));
+}
+
diff --git a/ppt_control/static/settings.js b/ppt_control/static/settings.js
new file mode 100644
index 0000000..901af0b
--- /dev/null
+++ b/ppt_control/static/settings.js
@@ -0,0 +1,50 @@
+const COOKIENAME = "settings";
+const COOKIEEXP = 365;
+
+function setCookie(cname, cvalue, exdays) {
+    var d = new Date();
+    d.setTime(d.getTime() + (exdays*24*60*60*1000));
+    var expires = "expires="+ d.toUTCString();
+    document.cookie = cname + "=" + cvalue + ";" + expires + ";path=/";
+}
+
+function getCookie(cname) {
+    var name = cname + "=";
+    var decodedCookie = decodeURIComponent(document.cookie);
+    var ca = decodedCookie.split(';');
+    for(var i = 0; i <ca.length; i++) {
+        var c = ca[i];
+        while (c.charAt(0) == ' ') {
+            c = c.substring(1);
+        }
+        if (c.indexOf(name) == 0) {
+            return c.substring(name.length, c.length);
+        }
+    }
+    return 0;
+}
+
+function saveSettings() {
+    console.log("Saving settings")
+    settingsString = JSON.stringify({showcurrent: show_current.checked, shownext: show_next.checked, enable_shortcuts: shortcuts.checked});
+    setCookie(COOKIENAME, settingsString, COOKIEEXP);
+}
+
+function initSettings() {
+    if (getCookie(COOKIENAME) == 0) {
+        if (window.obssstudio) {
+                shortcuts.checked = False;
+                show_current.checked = False;
+        }
+        saveSettings()
+    } else {
+        cookie = JSON.parse(getCookie(COOKIENAME));
+        show_current.checked = cookie.showcurrent;
+        show_next.checked = cookie.shownext;
+        shortcuts.checked = cookie.enable_shortcuts;
+        sync_current();
+        sync_next();
+    }
+
+}
+
diff --git a/ppt_control/static/style.css b/ppt_control/static/style.css
new file mode 100644
index 0000000..01c5734
--- /dev/null
+++ b/ppt_control/static/style.css
@@ -0,0 +1,77 @@
+#img_container, #controls_container {
+	width: 100%;
+	max-width: 1500px;
+	margin: auto;
+}
+
+img {
+	width: 100%;
+}
+
+#current_div {
+	float: left;
+	width: 70%;
+	margin: 10px;
+}
+
+#next_div {
+	width: 25%;
+	float: left;
+	margin: 10px;
+}
+
+h1 {
+    font-size: 20px;
+    font-weight: 300;
+    margin-bottom: 0;
+}
+
+p {
+	clear: both;
+}
+
+body {
+    background: #3a393a;
+    color: #efefef;
+    font-family: sans-serif;
+    #max-width: 500px;
+}
+
+input {
+  	width: 20px;
+  	font-size: 17px;
+}
+
+#count {
+	float: right;
+}
+
+@media only screen and (max-width: 800px) {
+	#current_div, #next_div {
+		width: calc(100% - 20px) !important;
+	}
+}
+
+.icon {
+	width: 50px;
+	filter: invert(88%) sepia(4%) saturate(15%) hue-rotate(18deg) brightness(92%) contrast(97%);
+}
+
+.icon:hover {
+	cursor: pointer;
+	filter: invert(100%) sepia(24%) saturate(1720%) hue-rotate(187deg) brightness(123%) contrast(87%);
+}
+
+.icon#first, .icon#last {
+	width: 20px;
+	margin-bottom: 10px;
+}
+
+button {
+	float: right;
+	margin: 0 10px 0 0;
+}
+
+input[type='checkbox'] {
+	font-size: 15px;
+}
diff --git a/ppt_control/static/white.jpg b/ppt_control/static/white.jpg
new file mode 100644
index 0000000..d4a375a
Binary files /dev/null and b/ppt_control/static/white.jpg differ
diff --git a/setup.py b/setup.py
new file mode 100644
index 0000000..dd4b9bd
--- /dev/null
+++ b/setup.py
@@ -0,0 +1,32 @@
+import setuptools
+from os import path
+import ppt_control      # Import main module so we can set the version
+
+here = path.abspath(path.dirname(__file__))
+
+# Get the long description from the README file
+with open(path.join(here, 'README.md'), encoding='utf-8') as f:
+    long_description = f.read()
+setuptools.setup(
+    name='ppt-control',
+    version=ppt_control.__version__,
+    description='Interface for controlling PowerPoint slideshows over WebSocket/HTTP',
+    long_description_content_type='text/markdown',
+    url='https://git.lorimer.id.au/ppt-control.git',
+    author='Andrew Lorimer',
+    author_email='andrew@lorimer.id.au',
+    classifiers=[                       # https://pypi.org/classifiers/
+        'Development Status :: 4 - Beta',
+        'Programming Language :: Python :: 3',
+        'License :: OSI Approved :: GNU General Public License v3 (GPLv3)',
+        'Operating System :: Microsoft :: Windows',
+        'Topic :: Multimedia'
+    ],
+    keywords='ppt-control ppt_control powerpoint ppt',
+    packages=setuptools.find_packages(),
+    python_requires='>3.6',    # as of v0.0.1, OBS only supports use of Python 3.6 for scripts. Otherwise the package works fine on > 3.6.
+    install_requires=['pywin32', 'websockets', 'pystray'],   # https://packaging.python.org/en/latest/requirements.html
+    data_files=[(ppt_control.__configdir__, ['ppt-control.ini'])],
+    package_data={"": ["static/*", "static/icons/*"]}
+    #include_package_data=True
+)