diff --git a/blcu-programming/.gitattributes b/blcu-programming/.gitattributes
new file mode 100644
index 000000000..eba1110b5
--- /dev/null
+++ b/blcu-programming/.gitattributes
@@ -0,0 +1,2 @@
+# Auto detect text files and perform LF normalization
+* text=auto
\ No newline at end of file
diff --git a/blcu-programming/.gitignore b/blcu-programming/.gitignore
new file mode 100644
index 000000000..3d2760b96
--- /dev/null
+++ b/blcu-programming/.gitignore
@@ -0,0 +1,10 @@
+/.venv
+/.vscode
+*.pyc
+*__pycache__/
+*.pyo
+*.pyd
+.idea/
+containers/*/.venv
+.env
+*.log
\ No newline at end of file
diff --git a/blcu-programming/LICENSE b/blcu-programming/LICENSE
new file mode 100644
index 000000000..e62ec04cd
--- /dev/null
+++ b/blcu-programming/LICENSE
@@ -0,0 +1,674 @@
+GNU GENERAL PUBLIC LICENSE
+                       Version 3, 29 June 2007
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+
+  Later license versions may give you additional or different
+permissions.  However, no additional obligations are imposed on any
+author or copyright holder as a result of your choosing to follow a
+later version.
+
+  15. Disclaimer of Warranty.
+
+  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/blcu-programming/README.md b/blcu-programming/README.md
new file mode 100644
index 000000000..868e677d9
--- /dev/null
+++ b/blcu-programming/README.md
@@ -0,0 +1,76 @@
+# TFTP Server and Client
+
+**TFTP Server and Client** is a comprehensive Python-based application designed to facilitate Trivial File Transfer Protocol (TFTP) operations through a user-friendly graphical interface built with PyQt5. This tool allows users to efficiently manage file transfers to and from TFTP servers, making it an essential resource for network administrators.
+
+## Key Features
+
+### TFTP Server
+- **Start/Stop Server:** Easily control the TFTP server with start and stop functionalities.
+- **Select IP Address:** Choose the specific IP address for the server to listen on.
+- **Change Working Directory:** Modify the current working directory for file transfers with a straightforward interface.
+- **View Directory Contents:** Quickly access and view files in the current working directory.
+- **Logging:** Track server activity with real-time logging displayed in the application and stored in a log file.
+[tftp_server](../TFTP_GUI_Server_Client/screenshot/tftp_server.png)
+### TFTP Client
+- **Upload Files:** Seamlessly upload files to a TFTP server using a simple interface.
+- **Download Files:** Effortlessly download files from a TFTP server with progress monitoring.
+- **File Browsing:** Use an integrated file dialog for easy file selection.
+- **Status Updates:** Receive real-time status updates during upload and download processes.
+[tftp_client](../TFTP_GUI_Server_Client/screenshot/tftp_client.png)
+### Monitoring and Alerts
+- Monitor TFTP server activities and transfer statuses with immediate feedback on successes or failures.
+- Real-time updates ensure that users can track the progress of their operations.
+
+### Error Handling and Prompt Detection
+- Implement robust error handling specific to TFTP operations to ensure smooth functionality.
+- Dynamic prompt detection allows the application to handle varying device responses effectively.
+
+## Example Configurations
+
+### Setting Up the TFTP Server
+1. Launch the application and navigate to the TFTP Server tab.
+2. Select an available IP address from the dropdown menu.
+3. Specify the desired port number (default is 69).
+4. Click **Start Server** to begin listening for incoming TFTP requests.
+
+### Uploading Files
+1. Navigate to the TFTP Client tab.
+2. Enter the TFTP server IP address.
+3. Use the **Browse Upload...** button to select the file you wish to upload.
+4. Click **Upload File** and monitor the status for updates.
+
+### Downloading Files
+1. Enter the TFTP server IP address and specify the file name for download.
+2. Click **Download File** to initiate the download process.
+3. Progress and status will be displayed in real time.
+
+## System Requirements
+
+To run the TFTP Server and Client application, the following system requirements must be met:
+
+- **Python 3.x**
+- **PyQt5**
+- **TFTP Library** 
+- **OS:** Windows 10 or Ubuntu >=20.04 (recommended) or any modern Linux distribution 
+
+## Technologies Used
+
+- **Python:** The core language utilized for backend logic.
+- **PyQt5:** The framework used for developing the graphical user interface.
+- **TFTP Library:** Employed for implementing TFTP protocol functionalities.
+
+## License
+
+This project is licensed under the MIT License - see the [LICENSE](LICENSE) file for details.
+
+## Contributing
+
+Contributions are welcome! Please fork the repository and create a pull request with your enhancements. Alternatively, you can open an issue to suggest improvements or report bugs.
+
+## Author
+
+**petrunetworking** (Network Engineer)
+
+## Acknowledgements
+
+Developed using Python and inspired by the need for efficient file transfer solutions, this application aims to simplify TFTP operations for network professionals, enabling them to manage their file transfers effectively and reliably.
diff --git a/blcu-programming/TFTP_GUI_Server.py b/blcu-programming/TFTP_GUI_Server.py
new file mode 100644
index 000000000..1fc4d3d9d
--- /dev/null
+++ b/blcu-programming/TFTP_GUI_Server.py
@@ -0,0 +1,232 @@
+import sys
+import os
+import threading
+import socket
+import logging
+from PyQt5 import QtWidgets, QtGui, QtCore
+from tftp.TFTPServer import TftpPacketDAT, TftpPacketERR, TftpServer
+from tftp.TftpClient import TftpClient
+# Logging Configuration
+logger = logging.getLogger('tftp_server')
+logger.setLevel(logging.INFO)
+file_handler = logging.FileHandler('tftp_server_activity.log')
+formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')
+file_handler.setFormatter(formatter)
+logger.addHandler(file_handler)
+
+import socket
+
+import psutil
+
+def get_ip_addresses():
+    """Get the list of available IP addresses on the local machine across all interfaces."""
+    ip_addresses = []
+
+    for interface, addresses in psutil.net_if_addrs().items():
+        for address in addresses:
+            if address.family == socket.AF_INET:  # IPv4 addresses only
+                ip_addresses.append(address.address)
+    
+    # Remove duplicates and return the list of IP addresses
+    return list(set(ip_addresses))
+
+class TFTPClient(QtWidgets.QWidget):
+    log_signal = QtCore.pyqtSignal(str)  # Signal to update log
+
+    def __init__(self):
+        super().__init__()
+        self.setWindowTitle("TFTP Client")
+        self.setGeometry(500, 100, 500, 400)
+
+        self.hardcoded_ip = "192.168.0.27"
+
+        self.ip_input = QtWidgets.QLineEdit(self)
+        self.ip_input.setPlaceholderText("Enter Server IP Address")
+        self.ip_input.setText(self.hardcoded_ip)  # Set hardcoded IP
+        self.ip_input.setReadOnly(True)
+
+        # Separate inputs for upload and download
+        self.upload_file_input = QtWidgets.QLineEdit(self)
+        self.upload_file_input.setPlaceholderText("Select File to Upload")
+        
+        self.download_file_input = QtWidgets.QLineEdit(self)
+        self.download_file_input.setPlaceholderText("Enter File Name to Download")
+
+        self.browse_button = QtWidgets.QPushButton("Browse Upload...", self)
+        self.browse_button.clicked.connect(self.browse_upload_file)
+
+        self.download_button = QtWidgets.QPushButton("Download File", self)
+        self.download_button.clicked.connect(self.download_file)
+
+        self.upload_button = QtWidgets.QPushButton("Upload File", self)
+        self.upload_button.clicked.connect(self.upload_file)
+
+        self.use_folder_checkbox = QtWidgets.QCheckBox("Use selected folder for download", self)
+        self.use_folder_checkbox.setChecked(False)  # Default unchecked
+
+        self.default_directory_label = QtWidgets.QLabel(self)
+        self.default_directory_label.setText(f"Default Download Directory: {self.get_default_directory()}")
+
+        self.status_label = QtWidgets.QLabel("Status: Waiting", self)
+        self.status_label.setStyleSheet("font-weight: bold;")
+
+        self.log_output = QtWidgets.QTextEdit(self)
+        self.log_output.setReadOnly(True)
+
+        layout = QtWidgets.QVBoxLayout()
+        layout.addWidget(QtWidgets.QLabel("Enter Server IP Address:"))
+        layout.addWidget(self.ip_input)
+
+        # Upload file section
+        layout.addWidget(QtWidgets.QLabel("File to Upload:"))
+        layout.addWidget(self.upload_file_input)
+        layout.addWidget(self.browse_button)
+
+        # Download file section
+        layout.addWidget(QtWidgets.QLabel("File to Download:"))
+        layout.addWidget(self.download_file_input)
+        layout.addWidget(self.use_folder_checkbox)  # Add the checkbox here
+
+        # Add the default directory label
+        layout.addWidget(self.default_directory_label)
+
+        button_layout = QtWidgets.QHBoxLayout()
+        button_layout.addWidget(self.download_button)
+        button_layout.addWidget(self.upload_button)
+        button_layout.addWidget(self.status_label)
+        layout.addLayout(button_layout)
+
+        layout.addWidget(QtWidgets.QLabel("Client Log:"))
+        layout.addWidget(self.log_output)
+
+        self.setLayout(layout)
+        self.setStyleSheet("background-color: #f0f0f0; font-family: Arial;")
+
+        self.total_size = 0
+        self.downloaded_size = 0
+
+        # Connect the log signal to the update_log method
+        self.log_signal.connect(self.update_log)
+
+    def get_default_directory(self):
+        """Return the default download directory."""
+        return os.path.expanduser("~")  # User's home directory
+
+    def browse_upload_file(self):
+        options = QtWidgets.QFileDialog.Options()
+        file_name, _ = QtWidgets.QFileDialog.getOpenFileName(self, "Select File to Upload", "", "All Files (*);;Text Files (*.txt)", options=options)
+        if file_name:
+            self.upload_file_input.setText(file_name)  # Save the full path for the selected file
+
+    def download_file(self):
+        ip = self.ip_input.text()  # Get the manually entered IP address
+        filename = self.download_file_input.text()
+
+        if self.use_folder_checkbox.isChecked():
+            # Open a dialog to select the folder for saving the downloaded file
+            folder = QtWidgets.QFileDialog.getExistingDirectory(self, "Select Folder to Save Downloaded File")
+            
+            if folder:  # Proceed only if a folder was selected
+                self.status_label.setText("Status: Downloading...")
+                self.log_output.clear()  # Clear previous logs
+
+                # Construct the full path for the downloaded file
+                full_path = os.path.join(folder, filename)
+
+                # Start a new thread for downloading to avoid blocking the UI
+                threading.Thread(target=self.perform_download, args=(ip, full_path), daemon=True).start()
+            else:
+                self.log_signal.emit("Download canceled: No folder selected.")
+        else:
+            # Default save path (you can modify this to your preferred default directory)
+            default_directory = self.get_default_directory()
+            full_path = os.path.join(default_directory, filename)
+
+            self.status_label.setText("Status: Downloading...")
+            self.log_output.clear()  # Clear previous logs
+
+            # Start a new thread for downloading to avoid blocking the UI
+            threading.Thread(target=self.perform_download, args=(ip, full_path), daemon=True).start()
+
+    def perform_download(self, ip, full_path):
+        try:
+            client = TftpClient(ip, 69)
+
+            # Get total file size
+            self.total_size = client.get_file_size(os.path.basename(full_path))
+            if self.total_size <= 0:
+                self.status_label.setText("Error: Invalid file size.")
+                self.log_signal.emit("Error: Invalid file size.")
+                return
+
+            # Function to update progress
+            def update_progress(packet):
+                if isinstance(packet, TftpPacketERR):
+                    self.log_signal.emit(f"Error: {packet.errmsg.decode()}")
+                    return
+                
+                # Check for DAT packets (data packets)
+                if isinstance(packet, TftpPacketDAT):
+                    self.downloaded_size += len(packet.data)
+                    self.log_signal.emit(f"Downloaded: {self.downloaded_size} bytes")
+
+            # Start downloading with the update_progress callback
+            client.download(os.path.basename(full_path), output=full_path, packethook=update_progress)
+
+            self.status_label.setText("Status: Download Complete")
+            self.log_signal.emit("Download complete.")
+        except Exception as e:
+            self.status_label.setText(f"Error: {str(e)}")
+            self.log_signal.emit(f"Error: {str(e)}")
+
+    def upload_file(self):
+        ip = self.ip_input.text()  # Get the manually entered IP address
+        filename = self.upload_file_input.text()
+        self.status_label.setText("Status: Uploading...")
+        self.log_output.clear()  # Clear previous logs
+
+        # Start a new thread for uploading to avoid blocking the UI
+        threading.Thread(target=self.perform_upload, args=(ip, filename), daemon=True).start()
+
+    def perform_upload(self, ip, filename):
+        try:
+            client = TftpClient(ip, 69)
+
+            # Get total file size
+            self.total_size = os.path.getsize(filename)
+            self.downloaded_size = 0  # Reset downloaded size
+
+            # Function to update progress
+            def update_progress(packet):
+                if isinstance(packet, TftpPacketERR):
+                    self.log_signal.emit(f"Error: {packet.errmsg.decode()}")
+                    return
+                
+                # Check for DAT packets (data packets)
+                if isinstance(packet, TftpPacketDAT):
+                    self.downloaded_size += len(packet.data)
+                    self.log_signal.emit(f"Uploaded: {self.downloaded_size} bytes")
+
+            # Start uploading with the update_progress callback
+            with open(filename, 'rb') as f:
+                client.upload(os.path.basename(filename), input=f, packethook=update_progress)
+
+            self.status_label.setText("Status: Upload Complete")
+            self.log_signal.emit("Upload complete.")
+        except Exception as e:
+            self.status_label.setText(f"Error: {str(e)}")
+            self.log_signal.emit(f"Error: {str(e)}")
+
+    def update_log(self, message):
+        self.log_output.append(message)
+        self.log_output.moveCursor(QtGui.QTextCursor.End)  # Scroll to the bottom
+
+
+if __name__ == "__main__":
+    app = QtWidgets.QApplication(sys.argv)
+    client = TFTPClient()
+    client.setWindowTitle("TFTP Client by petrunetworking")
+    client.setGeometry(100, 100, 500, 400)
+    client.setStyleSheet("background-color: #eaeaea; font-family: Arial;")
+    client.show()
+    sys.exit(app.exec_())
diff --git a/blcu-programming/api/main.py b/blcu-programming/api/main.py
new file mode 100644
index 000000000..15d9307ca
--- /dev/null
+++ b/blcu-programming/api/main.py
@@ -0,0 +1,92 @@
+from datetime import datetime, timezone
+from pathlib import Path
+
+from fastapi import FastAPI, HTTPException, Query
+from pydantic import BaseModel, Field
+
+from tftp.TftpClient import TftpClient
+
+app = FastAPI(title="TFTP API", version="0.1.0")
+
+LOG_FILE = Path("tftp_server_activity.log")
+
+
+class TransferRequest(BaseModel):
+    host: str
+    port: int = Field(default=69, ge=1, le=65535)
+    remote_filename: str
+    local_path: str
+
+
+def _utc_now() -> str:
+    return datetime.now(timezone.utc).isoformat()
+
+
+@app.get("/health")
+def health() -> dict:
+    return {
+        "status": "ok",
+        "service": "tftp-api",
+        "timestamp": _utc_now(),
+    }
+
+
+@app.post("/upload")
+def upload_file(request: TransferRequest) -> dict:
+    local_path = Path(request.local_path).expanduser().resolve()
+    if not local_path.exists() or not local_path.is_file():
+        raise HTTPException(status_code=400, detail="local_path must be an existing file")
+
+    client = TftpClient(request.host, request.port)
+
+    try:
+        with local_path.open("rb") as file_handle:
+            client.upload(request.remote_filename, file_handle, timeout=3, retries=1)
+    except Exception as exc:
+        raise HTTPException(status_code=500, detail=str(exc)) from exc
+
+    return {
+        "ok": True,
+        "message": "Upload complete",
+        "host": request.host,
+        "port": request.port,
+        "remote_filename": request.remote_filename,
+        "local_path": str(local_path),
+    }
+
+
+@app.post("/download")
+def download_file(request: TransferRequest) -> dict:
+    local_path = Path(request.local_path).expanduser().resolve()
+    local_path.parent.mkdir(parents=True, exist_ok=True)
+
+    client = TftpClient(request.host, request.port)
+
+    try:
+        client.download(request.remote_filename, output=str(local_path))
+    except Exception as exc:
+        raise HTTPException(status_code=500, detail=str(exc)) from exc
+
+    return {
+        "ok": True,
+        "message": "Download complete",
+        "host": request.host,
+        "port": request.port,
+        "remote_filename": request.remote_filename,
+        "local_path": str(local_path),
+    }
+
+
+@app.get("/logs")
+def get_logs(tail: int = Query(default=200, ge=1, le=5000)) -> dict:
+    if not LOG_FILE.exists():
+        return {"path": str(LOG_FILE), "lines": [], "line_count": 0}
+
+    lines = LOG_FILE.read_text(encoding="utf-8", errors="replace").splitlines()
+    selected_lines = lines[-tail:]
+
+    return {
+        "path": str(LOG_FILE.resolve()),
+        "lines": selected_lines,
+        "line_count": len(selected_lines),
+    }
diff --git a/blcu-programming/screenshot/tftp_client.png b/blcu-programming/screenshot/tftp_client.png
new file mode 100644
index 000000000..2bd14f402
Binary files /dev/null and b/blcu-programming/screenshot/tftp_client.png differ
diff --git a/blcu-programming/screenshot/tftp_server.png b/blcu-programming/screenshot/tftp_server.png
new file mode 100644
index 000000000..27eb3b074
Binary files /dev/null and b/blcu-programming/screenshot/tftp_server.png differ
diff --git a/blcu-programming/tftp/TFTPServer.py b/blcu-programming/tftp/TFTPServer.py
new file mode 100644
index 000000000..ee28ddce4
--- /dev/null
+++ b/blcu-programming/tftp/TFTPServer.py
@@ -0,0 +1,164 @@
+import os
+import select
+import socket
+import threading
+import logging
+from errno import EINTR
+from .TftpShared import *
+from .TftpPacketTypes import *
+from .TftpPacketFactory import TftpPacketFactory
+from .TftpContexts import TftpContextServer
+
+log = logging.getLogger('tftpy.TftpServer')
+# Define the logger for TFTP server
+logger = logging.getLogger('tftp_server')
+logger.setLevel(logging.INFO)
+file_handler = logging.FileHandler('tftp_server_activity.log')
+formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')
+file_handler.setFormatter(formatter)
+logger.addHandler(file_handler)
+
+class TftpServer(TftpSession):
+    def __init__(self, tftproot=None, dyn_file_func=None, upload_open=None):
+        super().__init__()
+        self.listenip = None
+        self.listenport = None
+        self.sock = None
+        self.root = os.path.abspath(tftproot)
+        self.dyn_file_func = dyn_file_func
+        self.upload_open = upload_open
+        self.sessions = {}
+        self.is_running = threading.Event()
+        self.shutdown_gracefully = False
+        self.shutdown_immediately = False
+
+        # Validate the TFTP root directory
+        if os.path.exists(self.root):
+            if not os.path.isdir(self.root):
+                raise TftpException("The tftproot must be a directory.")
+            if not os.access(self.root, os.R_OK):
+                raise TftpException("The tftproot must be readable.")
+            if not os.access(self.root, os.W_OK):
+                logger.warning("The tftproot is not writable.")
+        else:
+            raise TftpException("The tftproot does not exist.")
+
+    def handle_write_request(self, address, filename):
+        """
+        Handle write requests by saving the file to Django's MEDIA_ROOT.
+        """
+        filepath = os.path.join(self.root, filename)
+        try:
+            with open(filepath, 'wb') as file:
+                self.write_to_file(file)
+            logger.info(f"File written to {filepath}")
+        except Exception as e:
+            logger.error(f"Error writing file {filepath}: {e}")
+
+    def listen(self, listenip="", listenport=DEF_TFTP_PORT, timeout=SOCK_TIMEOUT, retries=DEF_TIMEOUT_RETRIES):
+        """
+        Start listening for incoming TFTP requests and handle them.
+        """
+        tftp_factory = TftpPacketFactory()
+
+        if not listenip:
+            listenip = '0.0.0.0'
+        logger.info("Server requested on IP %s, port %s" % (listenip, listenport))
+        try:
+            self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+            self.sock.bind((listenip, listenport))
+            _, self.listenport = self.sock.getsockname()
+        except socket.error as err:
+            logger.error(f"Socket error: {err}")
+            raise
+
+        self.is_running.set()
+
+        logger.info("Starting receive loop...")
+        while True:
+            if self.shutdown_immediately:
+                logger.warning("Shutting down immediately. Session count: %d" % len(self.sessions))
+                self.sock.close()
+                for key in self.sessions:
+                    self.sessions[key].end()
+                self.sessions = {}
+                break
+
+            elif self.shutdown_gracefully:
+                if not self.sessions:
+                    logger.warning("In graceful shutdown mode and all sessions complete.")
+                    self.sock.close()
+                    break
+
+            inputlist = [self.sock] + [session.sock for session in self.sessions.values()]
+            try:
+                readyinput, _, _ = select.select(inputlist, [], [], timeout)
+            except select.error as err:
+                if err[0] == EINTR:
+                    logger.debug("Interrupted syscall, retrying")
+                    continue
+                else:
+                    logger.error(f"Select error: {err}")
+                    raise
+
+            deletion_list = []
+
+            for readysock in readyinput:
+                if readysock == self.sock:
+                    buffer, (raddress, rport) = self.sock.recvfrom(MAX_BLKSIZE)
+                    if self.shutdown_gracefully:
+                        logger.warning("Discarding data on main port, in graceful shutdown mode")
+                        continue
+
+                    key = "%s:%s" % (raddress, rport)
+                    if key not in self.sessions:
+                        self.sessions[key] = TftpContextServer(raddress, rport, timeout, self.root, self.dyn_file_func, self.upload_open, retries=retries)
+                        try:
+                            self.sessions[key].start(buffer)
+                        except TftpException as err:
+                            deletion_list.append(key)
+                            logger.error("Fatal exception from session %s: %s" % (key, str(err)))
+                    logger.info("Currently handling these sessions:")
+                    for session_key, session in self.sessions.items():
+                        logger.info("    %s" % session)
+
+                else:
+                    for key in self.sessions:
+                        if readysock == self.sessions[key].sock:
+                            try:
+                                self.sessions[key].cycle()
+                                if self.sessions[key].state is None:
+                                    logger.info("Successful transfer.")
+                                    deletion_list.append(key)
+                            except TftpException as err:
+                                deletion_list.append(key)
+                                logger.error("Fatal exception from session %s: %s" % (key, str(err)))
+                            break
+                    else:
+                        logger.error("Can't find the owner for this packet. Discarding.")
+
+            for key in deletion_list:
+                if key in self.sessions:
+                    self.sessions[key].end()
+                    metrics = self.sessions[key].metrics
+                    if metrics.duration == 0:
+                        logger.info("Duration too short, rate undetermined")
+                    else:
+                        logger.info("Transferred %d bytes in %.2f seconds" % (metrics.bytes, metrics.duration))
+                        logger.info("Average rate: %.2f kbps" % metrics.kbps)
+                        logger.info("%.2f bytes in resent data" % metrics.resent_bytes)
+                        logger.info("%d duplicate packets" % metrics.dupcount)
+                    del self.sessions[key]
+
+        self.is_running.clear()
+        logger.debug("Server returning from while loop")
+        self.shutdown_gracefully = self.shutdown_immediately = False
+
+    def stop(self, now=False):
+        """
+        Stop the server gracefully. Do not take any new transfers, but complete the existing ones.
+        """
+        if now:
+            self.shutdown_immediately = True
+        else:
+            self.shutdown_gracefully = True
diff --git a/blcu-programming/tftp/TftpClient.py b/blcu-programming/tftp/TftpClient.py
new file mode 100644
index 000000000..b50b6953a
--- /dev/null
+++ b/blcu-programming/tftp/TftpClient.py
@@ -0,0 +1,131 @@
+# vim: ts=4 sw=4 et ai:
+# -*- coding: utf8 -*-
+"""This module implements the TFTP Client functionality. Instantiate an
+instance of the client, and then use its upload or download method. Logging is
+performed via a standard logging object set in TftpShared."""
+
+
+import io
+import types
+import logging
+from .TftpShared import *
+from .TftpPacketTypes import *
+from .TftpContexts import TftpContextClientDownload, TftpContextClientUpload
+
+log = logging.getLogger('tftpy.TftpClient')
+
+class TftpClient(TftpSession):
+    """This class is an implementation of a tftp client. Once instantiated, a
+    download can be initiated via the download() method, or an upload via the
+    upload() method."""
+
+    def __init__(self, host, port=69, options={}, localip = ""):
+        TftpSession.__init__(self)
+        self.context = None
+        self.host = host
+        self.iport = port
+        self.filename = None
+        self.options = options
+        self.localip = localip
+        if 'blksize' in self.options:
+            size = self.options['blksize']
+            tftpassert(int == type(size), "blksize must be an int")
+            if size < MIN_BLKSIZE or size > MAX_BLKSIZE:
+                raise TftpException("Invalid blksize: %d" % size)
+
+    def download(self, filename, output, packethook=None, timeout=SOCK_TIMEOUT, retries=DEF_TIMEOUT_RETRIES):
+        """This method initiates a tftp download from the configured remote
+        host, requesting the filename passed. It writes the file to output,
+        which can be a file-like object or a path to a local file. If a
+        packethook is provided, it must be a function that takes a single
+        parameter, which will be a copy of each DAT packet received in the
+        form of a TftpPacketDAT object. The timeout parameter may be used to
+        override the default SOCK_TIMEOUT setting, which is the amount of time
+        that the client will wait for a receive packet to arrive.
+        The retires paramater may be used to override the default DEF_TIMEOUT_RETRIES
+        settings, which is the amount of retransmission attemtpts the client will initiate
+        after encountering a timeout.
+
+        Note: If output is a hyphen, stdout is used."""
+        # We're downloading.
+        log.debug("Creating download context with the following params:")
+        log.debug("host = %s, port = %s, filename = %s" % (self.host, self.iport, filename))
+        log.debug("options = %s, packethook = %s, timeout = %s" % (self.options, packethook, timeout))
+        self.context = TftpContextClientDownload(self.host,
+                                                 self.iport,
+                                                 filename,
+                                                 output,
+                                                 self.options,
+                                                 packethook,
+                                                 timeout,
+                                                 retries=retries,
+                                                 localip=self.localip)
+        self.context.start()
+        # Download happens here
+        self.context.end()
+
+        metrics = self.context.metrics
+
+        log.info('')
+        log.info("Download complete.")
+        if metrics.duration == 0:
+            log.info("Duration too short, rate undetermined")
+        else:
+            log.info("Downloaded %.2f bytes in %.2f seconds" % (metrics.bytes, metrics.duration))
+            log.info("Average rate: %.2f kbps" % metrics.kbps)
+        log.info("%.2f bytes in resent data" % metrics.resent_bytes)
+        log.info("Received %d duplicate packets" % metrics.dupcount)
+    def get_file_size(self, filename):
+        """Simulate a request to get the file size from the server."""
+        # Create a request for the file
+        try:
+            # Here you would typically send a request to the server to check if the file exists
+            # Since TFTP doesn't support file size queries, we can simply perform a download in a way
+            # that we can track the size without saving the file, just for demonstration.
+            output = io.BytesIO()  # Use a BytesIO object to avoid writing to disk
+            self.download(filename, output)
+
+            # Get the size of the downloaded data
+            return output.getbuffer().nbytes
+
+        except Exception as e:
+            log.error(f"Failed to get file size: {str(e)}")
+            return -1  # Return -1 or another sentinel value to indicate an error
+    def upload(self, filename, input, packethook=None, timeout=SOCK_TIMEOUT, retries=DEF_TIMEOUT_RETRIES):
+        """This method initiates a tftp upload to the configured remote host,
+        uploading the filename passed. It reads the file from input, which
+        can be a file-like object or a path to a local file. If a packethook
+        is provided, it must be a function that takes a single parameter,
+        which will be a copy of each DAT packet sent in the form of a
+        TftpPacketDAT object. The timeout parameter may be used to override
+        the default SOCK_TIMEOUT setting, which is the amount of time that
+        the client will wait for a DAT packet to be ACKd by the server.
+        The retires paramater may be used to override the default DEF_TIMEOUT_RETRIES
+        settings, which is the amount of retransmission attemtpts the client will initiate
+        after encountering a timeout.
+
+        Note: If input is a hyphen, stdin is used."""
+        self.context = TftpContextClientUpload(self.host,
+                                               self.iport,
+                                               filename,
+                                               input,
+                                               self.options,
+                                               packethook,
+                                               timeout,
+                                               retries=retries,
+                                               localip=self.localip)
+        self.context.start()
+        # Upload happens here
+        self.context.end()
+
+        metrics = self.context.metrics
+
+        log.info('')
+        log.info("Upload complete.")
+        if metrics.duration == 0:
+            log.info("Duration too short, rate undetermined")
+        else:
+            log.info("Uploaded %d bytes in %.2f seconds" % (metrics.bytes, metrics.duration))
+            log.info("Average rate: %.2f kbps" % metrics.kbps)
+        log.info("%.2f bytes in resent data" % metrics.resent_bytes)
+        log.info("Resent %d packets" % metrics.dupcount)
diff --git a/blcu-programming/tftp/TftpContexts.py b/blcu-programming/tftp/TftpContexts.py
new file mode 100644
index 000000000..f01509eee
--- /dev/null
+++ b/blcu-programming/tftp/TftpContexts.py
@@ -0,0 +1,437 @@
+# vim: ts=4 sw=4 et ai:
+# -*- coding: utf8 -*-
+"""This module implements all contexts for state handling during uploads and
+downloads, the main interface to which being the TftpContext base class.
+
+The concept is simple. Each context object represents a single upload or
+download, and the state object in the context object represents the current
+state of that transfer. The state object has a handle() method that expects
+the next packet in the transfer, and returns a state object until the transfer
+is complete, at which point it returns None. That is, unless there is a fatal
+error, in which case a TftpException is returned instead."""
+
+
+from .TftpShared import *
+from .TftpPacketTypes import *
+from .TftpPacketFactory import TftpPacketFactory
+from .TftpStates import *
+from . import compat
+import socket
+import time
+import sys
+import os
+import logging
+
+log = logging.getLogger('tftpy.TftpContext')
+
+###############################################################################
+# Utility classes
+###############################################################################
+
+class TftpMetrics(object):
+    """A class representing metrics of the transfer."""
+    def __init__(self):
+        # Bytes transferred
+        self.bytes = 0
+        # Bytes re-sent
+        self.resent_bytes = 0
+        # Duplicate packets received
+        self.dups = {}
+        self.dupcount = 0
+        # Times
+        self.start_time = 0
+        self.end_time = 0
+        self.duration = 0
+        # Rates
+        self.bps = 0
+        self.kbps = 0
+        # Generic errors
+        self.errors = 0
+
+    def compute(self):
+        # Compute transfer time
+        self.duration = self.end_time - self.start_time
+        if self.duration == 0:
+            self.duration = 1
+        log.debug("TftpMetrics.compute: duration is %s", self.duration)
+        self.bps = (self.bytes * 8.0) / self.duration
+        self.kbps = self.bps / 1024.0
+        log.debug("TftpMetrics.compute: kbps is %s", self.kbps)
+        for key in self.dups:
+            self.dupcount += self.dups[key]
+
+    def add_dup(self, pkt):
+        """This method adds a dup for a packet to the metrics."""
+        log.debug("Recording a dup of %s", pkt)
+        s = str(pkt)
+        if s in self.dups:
+            self.dups[s] += 1
+        else:
+            self.dups[s] = 1
+        tftpassert(self.dups[s] < MAX_DUPS, "Max duplicates reached")
+
+###############################################################################
+# Context classes
+###############################################################################
+
+class TftpContext(object):
+    """The base class of the contexts."""
+
+    def __init__(self, host, port, timeout, retries=DEF_TIMEOUT_RETRIES, localip = ""):
+        """Constructor for the base context, setting shared instance
+        variables."""
+        self.file_to_transfer = None
+        self.fileobj = None
+        self.options = None
+        self.packethook = None
+        self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+        if localip != "":
+            self.sock.bind((localip, 0))
+        self.sock.settimeout(timeout)
+        self.timeout = timeout
+        self.retries = retries
+        self.state = None
+        self.next_block = 0
+        self.factory = TftpPacketFactory()
+        # Note, setting the host will also set self.address, as it's a property.
+        self.host = host
+        self.port = port
+        # The port associated with the TID
+        self.tidport = None
+        # Metrics
+        self.metrics = TftpMetrics()
+        # Fluag when the transfer is pending completion.
+        self.pending_complete = False
+        # Time when this context last received any traffic.
+        # FIXME: does this belong in metrics?
+        self.last_update = 0
+        # The last packet we sent, if applicable, to make resending easy.
+        self.last_pkt = None
+        # Count the number of retry attempts.
+        self.retry_count = 0
+
+    def getBlocksize(self):
+        """Fetch the current blocksize for this session."""
+        return int(self.options.get('blksize', 512))
+
+    def __del__(self):
+        """Simple destructor to try to call housekeeping in the end method if
+        not called explicitely. Leaking file descriptors is not a good
+        thing."""
+        self.end()
+
+    def checkTimeout(self, now):
+        """Compare current time with last_update time, and raise an exception
+        if we're over the timeout time."""
+        log.debug("checking for timeout on session %s", self)
+        if now - self.last_update > self.timeout:
+            raise TftpTimeout("Timeout waiting for traffic")
+
+    def start(self):
+        raise NotImplementedError("Abstract method")
+
+    def end(self, close_fileobj=True):
+        """Perform session cleanup, since the end method should always be
+        called explicitely by the calling code, this works better than the
+        destructor.
+        Set close_fileobj to False so fileobj can be returned open."""
+        log.debug("in TftpContext.end - closing socket")
+        self.sock.close()
+        if close_fileobj and self.fileobj is not None and not self.fileobj.closed:
+            log.debug("self.fileobj is open - closing")
+            self.fileobj.close()
+
+    def gethost(self):
+        "Simple getter method for use in a property."
+        return self.__host
+
+    def sethost(self, host):
+        """Setter method that also sets the address property as a result
+        of the host that is set."""
+        self.__host = host
+        self.address = socket.gethostbyname(host)
+
+    host = property(gethost, sethost)
+
+    def setNextBlock(self, block):
+        if block >= 2 ** 16:
+            log.debug("Block number rollover to 0 again")
+            block = 0
+        self.__eblock = block
+
+    def getNextBlock(self):
+        return self.__eblock
+
+    next_block = property(getNextBlock, setNextBlock)
+
+    def cycle(self):
+        """Here we wait for a response from the server after sending it
+        something, and dispatch appropriate action to that response."""
+        try:
+            (buffer, (raddress, rport)) = self.sock.recvfrom(MAX_BLKSIZE)
+        except socket.timeout:
+            log.warning("Timeout waiting for traffic, retrying...")
+            raise TftpTimeout("Timed-out waiting for traffic")
+
+        # Ok, we've received a packet. Log it.
+        log.debug("Received %d bytes from %s:%s",
+                        len(buffer), raddress, rport)
+        # And update our last updated time.
+        self.last_update = time.time()
+
+        # Decode it.
+        recvpkt = self.factory.parse(buffer)
+
+        # Check for known "connection".
+        if raddress != self.address:
+            log.warning("Received traffic from %s, expected host %s. Discarding"
+                        % (raddress, self.host))
+
+        if self.tidport and self.tidport != rport:
+            log.warning("Received traffic from %s:%s but we're "
+                        "connected to %s:%s. Discarding."
+                        % (raddress, rport,
+                        self.host, self.tidport))
+
+        # If there is a packethook defined, call it. We unconditionally
+        # pass all packets, it's up to the client to screen out different
+        # kinds of packets. This way, the client is privy to things like
+        # negotiated options.
+        if self.packethook:
+            self.packethook(recvpkt)
+
+        # And handle it, possibly changing state.
+        self.state = self.state.handle(recvpkt, raddress, rport)
+        # If we didn't throw any exceptions here, reset the retry_count to
+        # zero.
+        self.retry_count = 0
+
+class TftpContextServer(TftpContext):
+    """The context for the server."""
+    def __init__(self,
+                 host,
+                 port,
+                 timeout,
+                 root,
+                 dyn_file_func=None,
+                 upload_open=None,
+                 retries=DEF_TIMEOUT_RETRIES):
+        TftpContext.__init__(self,
+                             host,
+                             port,
+                             timeout,
+                             retries
+                             )
+        # At this point we have no idea if this is a download or an upload. We
+        # need to let the start state determine that.
+        self.state = TftpStateServerStart(self)
+
+        self.root = root
+        self.dyn_file_func = dyn_file_func
+        self.upload_open = upload_open
+
+    def __str__(self):
+        return "%s:%s %s" % (self.host, self.port, self.state)
+
+    def start(self, buffer):
+        """Start the state cycle. Note that the server context receives an
+        initial packet in its start method. Also note that the server does not
+        loop on cycle(), as it expects the TftpServer object to manage
+        that."""
+        log.debug("In TftpContextServer.start")
+        self.metrics.start_time = time.time()
+        log.debug("Set metrics.start_time to %s", self.metrics.start_time)
+        # And update our last updated time.
+        self.last_update = time.time()
+
+        pkt = self.factory.parse(buffer)
+        log.debug("TftpContextServer.start() - factory returned a %s", pkt)
+
+        # Call handle once with the initial packet. This should put us into
+        # the download or the upload state.
+        self.state = self.state.handle(pkt,
+                                       self.host,
+                                       self.port)
+
+    def end(self):
+        """Finish up the context."""
+        TftpContext.end(self)
+        self.metrics.end_time = time.time()
+        log.debug("Set metrics.end_time to %s", self.metrics.end_time)
+        self.metrics.compute()
+
+class TftpContextClientUpload(TftpContext):
+    """The upload context for the client during an upload.
+    Note: If input is a hyphen, then we will use stdin."""
+    def __init__(self,
+                 host,
+                 port,
+                 filename,
+                 input,
+                 options,
+                 packethook,
+                 timeout,
+                 retries=DEF_TIMEOUT_RETRIES,
+                 localip = ""):
+        TftpContext.__init__(self,
+                             host,
+                             port,
+                             timeout,
+                             retries,
+                             localip)
+        self.file_to_transfer = filename
+        self.options = options
+        self.packethook = packethook
+        # If the input object has a read() function,
+        # assume it is file-like.
+        if hasattr(input, 'read'):
+            self.fileobj = input
+        elif input == '-':
+            self.fileobj = compat.binary_stdin()
+        else:
+            self.fileobj = open(input, "rb")
+
+        log.debug("TftpContextClientUpload.__init__()")
+        log.debug("file_to_transfer = %s, options = %s" %
+            (self.file_to_transfer, self.options))
+
+    def __str__(self):
+        return "%s:%s %s" % (self.host, self.port, self.state)
+
+    def start(self):
+        log.info("Sending tftp upload request to %s" % self.host)
+        log.info("    filename -> %s" % self.file_to_transfer)
+        log.info("    options -> %s" % self.options)
+
+        self.metrics.start_time = time.time()
+        log.debug("Set metrics.start_time to %s" % self.metrics.start_time)
+
+        # FIXME: put this in a sendWRQ method?
+        pkt = TftpPacketWRQ()
+        pkt.filename = self.file_to_transfer
+        pkt.mode = "octet" # FIXME - shouldn't hardcode this
+        pkt.options = self.options
+        self.sock.sendto(pkt.encode().buffer, (self.host, self.port))
+        self.next_block = 1
+        self.last_pkt = pkt
+        # FIXME: should we centralize sendto operations so we can refactor all
+        # saving of the packet to the last_pkt field?
+
+        self.state = TftpStateSentWRQ(self)
+
+        while self.state:
+            try:
+                log.debug("State is %s" % self.state)
+                self.cycle()
+            except TftpTimeout as err:
+                log.error(str(err))
+                self.retry_count += 1
+                if self.retry_count >= self.retries:
+                    log.debug("hit max retries, giving up")
+                    raise
+                else:
+                    log.warning("resending last packet")
+                    self.state.resendLast()
+
+    def end(self):
+        """Finish up the context."""
+        TftpContext.end(self)
+        self.metrics.end_time = time.time()
+        log.debug("Set metrics.end_time to %s" % self.metrics.end_time)
+        self.metrics.compute()
+
+
+class TftpContextClientDownload(TftpContext):
+    """The download context for the client during a download.
+    Note: If output is a hyphen, then the output will be sent to stdout."""
+    def __init__(self,
+                 host,
+                 port,
+                 filename,
+                 output,
+                 options,
+                 packethook,
+                 timeout,
+                 retries=DEF_TIMEOUT_RETRIES,
+                 localip = ""):
+        TftpContext.__init__(self,
+                             host,
+                             port,
+                             timeout,
+                             retries,
+                             localip)
+        # FIXME: should we refactor setting of these params?
+        self.file_to_transfer = filename
+        self.options = options
+        self.packethook = packethook
+        self.filelike_fileobj = False
+        # If the output object has a write() function,
+        # assume it is file-like.
+        if hasattr(output, 'write'):
+            self.fileobj = output
+            self.filelike_fileobj = True
+        # If the output filename is -, then use stdout
+        elif output == '-':
+            self.fileobj = sys.stdout
+            self.filelike_fileobj = True
+        else:
+            self.fileobj = open(output, "wb")
+
+        log.debug("TftpContextClientDownload.__init__()")
+        log.debug("file_to_transfer = %s, options = %s" %
+            (self.file_to_transfer, self.options))
+
+    def __str__(self):
+        return "%s:%s %s" % (self.host, self.port, self.state)
+
+    def start(self):
+        """Initiate the download."""
+        log.info("Sending tftp download request to %s" % self.host)
+        log.info("    filename -> %s" % self.file_to_transfer)
+        log.info("    options -> %s" % self.options)
+
+        self.metrics.start_time = time.time()
+        log.debug("Set metrics.start_time to %s" % self.metrics.start_time)
+
+        # FIXME: put this in a sendRRQ method?
+        pkt = TftpPacketRRQ()
+        pkt.filename = self.file_to_transfer
+        pkt.mode = "octet" # FIXME - shouldn't hardcode this
+        pkt.options = self.options
+        self.sock.sendto(pkt.encode().buffer, (self.host, self.port))
+        self.next_block = 1
+        self.last_pkt = pkt
+
+        self.state = TftpStateSentRRQ(self)
+
+        while self.state:
+            try:
+                log.debug("State is %s" % self.state)
+                self.cycle()
+            except TftpTimeout as err:
+                log.error(str(err))
+                self.retry_count += 1
+                if self.retry_count >= self.retries:
+                    log.debug("hit max retries, giving up")
+                    raise
+                else:
+                    log.warning("resending last packet")
+                    self.state.resendLast()
+            except TftpFileNotFoundError as err:
+                # If we received file not found, then we should not save the open
+                # output file or we'll be left with a size zero file. Delete it,
+                # if it exists.
+                log.error("Received File not found error")
+                if self.fileobj is not None and not self.filelike_fileobj:
+                    if os.path.exists(self.fileobj.name):
+                        log.debug("unlinking output file of %s", self.fileobj.name)
+                        os.unlink(self.fileobj.name)
+
+                raise
+
+    def end(self):
+        """Finish up the context."""
+        TftpContext.end(self, not self.filelike_fileobj)
+        self.metrics.end_time = time.time()
+        log.debug("Set metrics.end_time to %s" % self.metrics.end_time)
+        self.metrics.compute()
diff --git a/blcu-programming/tftp/TftpPacketFactory.py b/blcu-programming/tftp/TftpPacketFactory.py
new file mode 100644
index 000000000..41f39a9e2
--- /dev/null
+++ b/blcu-programming/tftp/TftpPacketFactory.py
@@ -0,0 +1,47 @@
+# vim: ts=4 sw=4 et ai:
+# -*- coding: utf8 -*-
+"""This module implements the TftpPacketFactory class, which can take a binary
+buffer, and return the appropriate TftpPacket object to represent it, via the
+parse() method."""
+
+
+from .TftpShared import *
+from .TftpPacketTypes import *
+import logging
+
+log = logging.getLogger('tftpy.TftpPacketFactory')
+
+class TftpPacketFactory(object):
+    """This class generates TftpPacket objects. It is responsible for parsing
+    raw buffers off of the wire and returning objects representing them, via
+    the parse() method."""
+    def __init__(self):
+        self.classes = {
+            1: TftpPacketRRQ,
+            2: TftpPacketWRQ,
+            3: TftpPacketDAT,
+            4: TftpPacketACK,
+            5: TftpPacketERR,
+            6: TftpPacketOACK
+            }
+
+    def parse(self, buffer):
+        """This method is used to parse an existing datagram into its
+        corresponding TftpPacket object. The buffer is the raw bytes off of
+        the network."""
+        log.debug("parsing a %d byte packet" % len(buffer))
+        (opcode,) = struct.unpack(str("!H"), buffer[:2])
+        log.debug("opcode is %d" % opcode)
+        packet = self.__create(opcode)
+        packet.buffer = buffer
+        return packet.decode()
+
+    def __create(self, opcode):
+        """This method returns the appropriate class object corresponding to
+        the passed opcode."""
+        tftpassert(opcode in self.classes,
+                   "Unsupported opcode: %d" % opcode)
+
+        packet = self.classes[opcode]()
+
+        return packet
diff --git a/blcu-programming/tftp/TftpPacketTypes.py b/blcu-programming/tftp/TftpPacketTypes.py
new file mode 100644
index 000000000..3d3bdf83c
--- /dev/null
+++ b/blcu-programming/tftp/TftpPacketTypes.py
@@ -0,0 +1,494 @@
+# vim: ts=4 sw=4 et ai:
+# -*- coding: utf8 -*-
+"""This module implements the packet types of TFTP itself, and the
+corresponding encode and decode methods for them."""
+
+
+import struct
+import sys
+import logging
+from .TftpShared import *
+
+log = logging.getLogger('tftpy.TftpPacketTypes')
+
+class TftpSession(object):
+    """This class is the base class for the tftp client and server. Any shared
+    code should be in this class."""
+    # FIXME: do we need this anymore?
+    pass
+
+class TftpPacketWithOptions(object):
+    """This class exists to permit some TftpPacket subclasses to share code
+    regarding options handling. It does not inherit from TftpPacket, as the
+    goal is just to share code here, and not cause diamond inheritance."""
+
+    def __init__(self):
+        self.options = {}
+
+    # Always use unicode strings, except at the encode/decode barrier.
+    # Simpler to keep things clear.
+    def setoptions(self, options):
+        log.debug("in TftpPacketWithOptions.setoptions")
+        log.debug("options: %s", options)
+        myoptions = {}
+        for key in options:
+            newkey = key
+            if isinstance(key, bytes):
+                newkey = newkey.decode('ascii')
+            newval = options[key]
+            if isinstance(newval, bytes):
+                newval = newval.decode('ascii')
+            myoptions[newkey] = newval
+            log.debug("populated myoptions with %s = %s", newkey, myoptions[newkey])
+
+        log.debug("setting options hash to: %s", myoptions)
+        self._options = myoptions
+
+    def getoptions(self):
+        log.debug("in TftpPacketWithOptions.getoptions")
+        return self._options
+
+    # Set up getter and setter on options to ensure that they are the proper
+    # type. They should always be strings, but we don't need to force the
+    # client to necessarily enter strings if we can avoid it.
+    options = property(getoptions, setoptions)
+
+    def decode_options(self, buffer):
+        """This method decodes the section of the buffer that contains an
+        unknown number of options. It returns a dictionary of option names and
+        values."""
+        fmt = b"!"
+        options = {}
+
+        log.debug("decode_options: buffer is: %s", repr(buffer))
+        log.debug("size of buffer is %d bytes", len(buffer))
+        if len(buffer) == 0:
+            log.debug("size of buffer is zero, returning empty hash")
+            return {}
+
+        # Count the nulls in the buffer. Each one terminates a string.
+        log.debug("about to iterate options buffer counting nulls")
+        length = 0
+        for i in range(len(buffer)):
+            if ord(buffer[i:i+1]) == 0:
+                log.debug("found a null at length %d", length)
+                if length > 0:
+                    fmt += b"%dsx" % length
+                    length = -1
+                else:
+                    raise TftpException("Invalid options in buffer")
+            length += 1
+
+        log.debug("about to unpack, fmt is: %s", fmt)
+        mystruct = struct.unpack(fmt, buffer)
+
+        tftpassert(len(mystruct) % 2 == 0,
+                   "packet with odd number of option/value pairs")
+
+        for i in range(0, len(mystruct), 2):
+            key = mystruct[i].decode('ascii')
+            val = mystruct[i+1].decode('ascii')
+            log.debug("setting option %s to %s", key, val)
+            log.debug("types are %s and %s", type(key), type(val))
+            options[key] = val
+
+        return options
+
+class TftpPacket(object):
+    """This class is the parent class of all tftp packet classes. It is an
+    abstract class, providing an interface, and should not be instantiated
+    directly."""
+    def __init__(self):
+        self.opcode = 0
+        self.buffer = None
+
+    def encode(self):
+        """The encode method of a TftpPacket takes keyword arguments specific
+        to the type of packet, and packs an appropriate buffer in network-byte
+        order suitable for sending over the wire.
+
+        This is an abstract method."""
+        raise NotImplementedError("Abstract method")
+
+    def decode(self):
+        """The decode method of a TftpPacket takes a buffer off of the wire in
+        network-byte order, and decodes it, populating internal properties as
+        appropriate. This can only be done once the first 2-byte opcode has
+        already been decoded, but the data section does include the entire
+        datagram.
+
+        This is an abstract method."""
+        raise NotImplementedError("Abstract method")
+
+class TftpPacketInitial(TftpPacket, TftpPacketWithOptions):
+    """This class is a common parent class for the RRQ and WRQ packets, as
+    they share quite a bit of code."""
+    def __init__(self):
+        TftpPacket.__init__(self)
+        TftpPacketWithOptions.__init__(self)
+        self.filename = None
+        self.mode = None
+
+    def encode(self):
+        """Encode the packet's buffer from the instance variables."""
+        tftpassert(self.filename, "filename required in initial packet")
+        tftpassert(self.mode, "mode required in initial packet")
+        # Make sure filename and mode are bytestrings.
+        filename = self.filename
+        mode = self.mode
+        if not isinstance(filename, bytes):
+            filename = filename.encode('ascii')
+        if not isinstance(self.mode, bytes):
+            mode = mode.encode('ascii')
+
+        ptype = None
+        if self.opcode == 1: ptype = "RRQ"
+        else:                ptype = "WRQ"
+        log.debug("Encoding %s packet, filename = %s, mode = %s",
+            ptype, filename, mode)
+        for key in self.options:
+            log.debug("    Option %s = %s", key, self.options[key])
+
+        fmt = b"!H"
+        fmt += b"%dsx" % len(filename)
+        if mode == b"octet":
+            fmt += b"5sx"
+        else:
+            raise AssertionError("Unsupported mode: %s" % mode)
+        # Add options. Note that the options list must be bytes.
+        options_list = []
+        if len(list(self.options.keys())) > 0:
+            log.debug("there are options to encode")
+            for key in self.options:
+                # Populate the option name
+                name = key
+                if not isinstance(name, bytes):
+                    name = name.encode('ascii')
+                options_list.append(name)
+                fmt += b"%dsx" % len(name)
+                # Populate the option value
+                value = self.options[key]
+                # Work with all strings.
+                if isinstance(value, int):
+                    value = str(value)
+                if not isinstance(value, bytes):
+                    value = value.encode('ascii')
+                options_list.append(value)
+                fmt += b"%dsx" % len(value)
+
+        log.debug("fmt is %s", fmt)
+        log.debug("options_list is %s", options_list)
+        log.debug("size of struct is %d", struct.calcsize(fmt))
+        
+        self.buffer = struct.pack(fmt,
+                                  self.opcode,
+                                  filename,
+                                  mode,
+                                  *options_list)
+
+        log.debug("buffer is %s", repr(self.buffer))
+        return self
+
+    def decode(self):
+        tftpassert(self.buffer, "Can't decode, buffer is empty")
+
+        # FIXME - this shares a lot of code with decode_options
+        nulls = 0
+        fmt = b""
+        nulls = length = tlength = 0
+        log.debug("in decode: about to iterate buffer counting nulls")
+        subbuf = self.buffer[2:]
+        for i in range(len(subbuf)):
+            if ord(subbuf[i:i+1]) == 0:
+                nulls += 1
+                log.debug("found a null at length %d, now have %d", length, nulls)
+                fmt += b"%dsx" % length
+                length = -1
+                # At 2 nulls, we want to mark that position for decoding.
+                if nulls == 2:
+                    break
+            length += 1
+            tlength += 1
+
+        log.debug("hopefully found end of mode at length %d", tlength)
+        # length should now be the end of the mode.
+        tftpassert(nulls == 2, "malformed packet")
+        shortbuf = subbuf[:tlength+1]
+        log.debug("about to unpack buffer with fmt: %s", fmt)
+        log.debug("unpacking buffer: %s", repr(shortbuf))
+        mystruct = struct.unpack(fmt, shortbuf)
+
+        tftpassert(len(mystruct) == 2, "malformed packet")
+        self.filename = mystruct[0].decode('ascii')
+        self.mode = mystruct[1].decode('ascii').lower() # force lc - bug 17
+        log.debug("set filename to %s", self.filename)
+        log.debug("set mode to %s", self.mode)
+
+        self.options = self.decode_options(subbuf[tlength+1:])
+        log.debug("options dict is now %s", self.options)
+        return self
+
+class TftpPacketRRQ(TftpPacketInitial):
+    """
+::
+
+            2 bytes    string   1 byte     string   1 byte
+            -----------------------------------------------
+    RRQ/  | 01/02 |  Filename  |   0  |    Mode    |   0  |
+    WRQ     -----------------------------------------------
+    """
+    def __init__(self):
+        TftpPacketInitial.__init__(self)
+        self.opcode = 1
+
+    def __str__(self):
+        s = 'RRQ packet: filename = %s' % self.filename
+        s += ' mode = %s' % self.mode
+        if self.options:
+            s += '\n    options = %s' % self.options
+        return s
+
+class TftpPacketWRQ(TftpPacketInitial):
+    """
+::
+
+            2 bytes    string   1 byte     string   1 byte
+            -----------------------------------------------
+    RRQ/  | 01/02 |  Filename  |   0  |    Mode    |   0  |
+    WRQ     -----------------------------------------------
+    """
+    def __init__(self):
+        TftpPacketInitial.__init__(self)
+        self.opcode = 2
+
+    def __str__(self):
+        s = 'WRQ packet: filename = %s' % self.filename
+        s += ' mode = %s' % self.mode
+        if self.options:
+            s += '\n    options = %s' % self.options
+        return s
+
+class TftpPacketDAT(TftpPacket):
+    """
+::
+
+            2 bytes    2 bytes       n bytes
+            ---------------------------------
+    DATA  | 03    |   Block #  |    Data    |
+            ---------------------------------
+    """
+    def __init__(self):
+        TftpPacket.__init__(self)
+        self.opcode = 3
+        self.blocknumber = 0
+        self.data = None
+
+    def __str__(self):
+        s = 'DAT packet: block %s' % self.blocknumber
+        if self.data:
+            s += '\n    data: %d bytes' % len(self.data)
+        return s
+
+    def encode(self):
+        """Encode the DAT packet. This method populates self.buffer, and
+        returns self for easy method chaining."""
+        if len(self.data) == 0:
+            log.debug("Encoding an empty DAT packet")
+        data = self.data
+        if not isinstance(self.data, bytes):
+            data = self.data.encode('ascii')
+        fmt = b"!HH%ds" % len(data)
+        self.buffer = struct.pack(fmt,
+                                  self.opcode,
+                                  self.blocknumber,
+                                  data)
+        return self
+
+    def decode(self):
+        """Decode self.buffer into instance variables. It returns self for
+        easy method chaining."""
+        # We know the first 2 bytes are the opcode. The second two are the
+        # block number.
+        (self.blocknumber,) = struct.unpack(str("!H"), self.buffer[2:4])
+        log.debug("decoding DAT packet, block number %d", self.blocknumber)
+        log.debug("should be %d bytes in the packet total", len(self.buffer))
+        # Everything else is data.
+        self.data = self.buffer[4:]
+        log.debug("found %d bytes of data", len(self.data))
+        return self
+
+class TftpPacketACK(TftpPacket):
+    """
+::
+
+            2 bytes    2 bytes
+            -------------------
+    ACK   | 04    |   Block #  |
+            --------------------
+    """
+    def __init__(self):
+        TftpPacket.__init__(self)
+        self.opcode = 4
+        self.blocknumber = 0
+
+    def __str__(self):
+        return 'ACK packet: block %d' % self.blocknumber
+
+    def encode(self):
+        log.debug("encoding ACK: opcode = %d, block = %d",
+            self.opcode, self.blocknumber)
+        self.buffer = struct.pack(str("!HH"), self.opcode, self.blocknumber)
+        return self
+
+    def decode(self):
+        if len(self.buffer) > 4:
+            log.debug("detected TFTP ACK but request is too large, will truncate")
+            log.debug("buffer was: %s", repr(self.buffer))
+            self.buffer = self.buffer[0:4]
+        self.opcode, self.blocknumber = struct.unpack(str("!HH"), self.buffer)
+        log.debug("decoded ACK packet: opcode = %d, block = %d",
+            self.opcode, self.blocknumber)
+        return self
+
+class TftpPacketERR(TftpPacket):
+    """
+::
+
+            2 bytes  2 bytes        string    1 byte
+            ----------------------------------------
+    ERROR | 05    |  ErrorCode |   ErrMsg   |   0  |
+            ----------------------------------------
+
+    Error Codes
+
+    Value     Meaning
+
+    0         Not defined, see error message (if any).
+    1         File not found.
+    2         Access violation.
+    3         Disk full or allocation exceeded.
+    4         Illegal TFTP operation.
+    5         Unknown transfer ID.
+    6         File already exists.
+    7         No such user.
+    8         Failed to negotiate options
+    """
+    def __init__(self):
+        TftpPacket.__init__(self)
+        self.opcode = 5
+        self.errorcode = 0
+        # FIXME: We don't encode the errmsg...
+        self.errmsg = None
+        # FIXME - integrate in TftpErrors references?
+        self.errmsgs = {
+            1: b"File not found",
+            2: b"Access violation",
+            3: b"Disk full or allocation exceeded",
+            4: b"Illegal TFTP operation",
+            5: b"Unknown transfer ID",
+            6: b"File already exists",
+            7: b"No such user",
+            8: b"Failed to negotiate options"
+            }
+
+    def __str__(self):
+        s = 'ERR packet: errorcode = %d' % self.errorcode
+        s += '\n    msg = %s' % self.errmsgs.get(self.errorcode, '')
+        return s
+
+    def encode(self):
+        """Encode the DAT packet based on instance variables, populating
+        self.buffer, returning self."""
+        fmt = b"!HH%dsx" % len(self.errmsgs[self.errorcode])
+        log.debug("encoding ERR packet with fmt %s", fmt)
+        self.buffer = struct.pack(fmt,
+                                  self.opcode,
+                                  self.errorcode,
+                                  self.errmsgs[self.errorcode])
+        return self
+
+    def decode(self):
+        "Decode self.buffer, populating instance variables and return self."
+        buflen = len(self.buffer)
+        tftpassert(buflen >= 4, "malformed ERR packet, too short")
+        log.debug("Decoding ERR packet, length %s bytes", buflen)
+        if buflen == 4:
+            log.debug("Allowing this affront to the RFC of a 4-byte packet")
+            fmt = b"!HH"
+            log.debug("Decoding ERR packet with fmt: %s", fmt)
+            self.opcode, self.errorcode = struct.unpack(fmt,
+                                                        self.buffer)
+        else:
+            log.debug("Good ERR packet > 4 bytes")
+            fmt = b"!HH%dsx" % (len(self.buffer) - 5)
+            log.debug("Decoding ERR packet with fmt: %s", fmt)
+            self.opcode, self.errorcode, self.errmsg = struct.unpack(fmt,
+                                                                     self.buffer)
+        log.error("ERR packet - errorcode: %d, message: %s"
+                     % (self.errorcode, self.errmsg))
+        return self
+
+class TftpPacketOACK(TftpPacket, TftpPacketWithOptions):
+    """
+::
+
+    +-------+---~~---+---+---~~---+---+---~~---+---+---~~---+---+
+    |  opc  |  opt1  | 0 | value1 | 0 |  optN  | 0 | valueN | 0 |
+    +-------+---~~---+---+---~~---+---+---~~---+---+---~~---+---+
+    """
+    def __init__(self):
+        TftpPacket.__init__(self)
+        TftpPacketWithOptions.__init__(self)
+        self.opcode = 6
+
+    def __str__(self):
+        return 'OACK packet:\n    options = %s' % self.options
+
+    def encode(self):
+        fmt = b"!H" # opcode
+        options_list = []
+        log.debug("in TftpPacketOACK.encode")
+        for key in self.options:
+            value = self.options[key]
+            if isinstance(value, int):
+                value = str(value)
+            if not isinstance(key, bytes):
+                key = key.encode('ascii')
+            if not isinstance(value, bytes):
+                value = value.encode('ascii')
+            log.debug("looping on option key %s", key)
+            log.debug("value is %s", value)
+            fmt += b"%dsx" % len(key)
+            fmt += b"%dsx" % len(value)
+            options_list.append(key)
+            options_list.append(value)
+        self.buffer = struct.pack(fmt, self.opcode, *options_list)
+        return self
+
+    def decode(self):
+        self.options = self.decode_options(self.buffer[2:])
+        return self
+
+    def match_options(self, options):
+        """This method takes a set of options, and tries to match them with
+        its own. It can accept some changes in those options from the server as
+        part of a negotiation. Changed or unchanged, it will return a dict of
+        the options so that the session can update itself to the negotiated
+        options."""
+        for name in self.options:
+            if name in options:
+                if name == 'blksize':
+                    # We can accept anything between the min and max values.
+                    size = int(self.options[name])
+                    if size >= MIN_BLKSIZE and size <= MAX_BLKSIZE:
+                        log.debug("negotiated blksize of %d bytes", size)
+                        options['blksize'] = size
+                    else:
+                        raise TftpException("blksize %s option outside allowed range" % size)
+                elif name == 'tsize':
+                    size = int(self.options[name])
+                    if size < 0:
+                        raise TftpException("Negative file sizes not supported")
+                else:
+                    raise TftpException("Unsupported option: %s" % name)
+        return True
diff --git a/blcu-programming/tftp/TftpShared.py b/blcu-programming/tftp/TftpShared.py
new file mode 100644
index 000000000..ab37bde0a
--- /dev/null
+++ b/blcu-programming/tftp/TftpShared.py
@@ -0,0 +1,52 @@
+# vim: ts=4 sw=4 et ai:
+# -*- coding: utf8 -*-
+"""This module holds all objects shared by all other modules in tftpy."""
+
+
+
+MIN_BLKSIZE = 8
+DEF_BLKSIZE = 512
+MAX_BLKSIZE = 65536
+SOCK_TIMEOUT = 50
+MAX_DUPS = 20
+DEF_TIMEOUT_RETRIES = 3
+DEF_TFTP_PORT = 69
+
+# A hook for deliberately introducing delay in testing.
+DELAY_BLOCK = 0
+
+def tftpassert(condition, msg):
+    """This function is a simple utility that will check the condition
+    passed for a false state. If it finds one, it throws a TftpException
+    with the message passed. This just makes the code throughout cleaner
+    by refactoring."""
+    if not condition:
+        raise TftpException(msg)
+
+class TftpErrors(object):
+    """This class is a convenience for defining the common tftp error codes,
+    and making them more readable in the code."""
+    NotDefined = 0
+    FileNotFound = 1
+    AccessViolation = 2
+    DiskFull = 3
+    IllegalTftpOp = 4
+    UnknownTID = 5
+    FileAlreadyExists = 6
+    NoSuchUser = 7
+    FailedNegotiation = 8
+
+class TftpException(Exception):
+    """This class is the parent class of all exceptions regarding the handling
+    of the TFTP protocol."""
+    pass
+
+class TftpTimeout(TftpException):
+    """This class represents a timeout error waiting for a response from the
+    other end."""
+    pass
+
+class TftpFileNotFoundError(TftpException):
+    """This class represents an error condition where we received a file
+    not found error."""
+    pass
diff --git a/blcu-programming/tftp/TftpStates.py b/blcu-programming/tftp/TftpStates.py
new file mode 100644
index 000000000..231b1ce6b
--- /dev/null
+++ b/blcu-programming/tftp/TftpStates.py
@@ -0,0 +1,611 @@
+# vim: ts=4 sw=4 et ai:
+# -*- coding: utf8 -*-
+"""This module implements all state handling during uploads and downloads, the
+main interface to which being the TftpState base class.
+
+The concept is simple. Each context object represents a single upload or
+download, and the state object in the context object represents the current
+state of that transfer. The state object has a handle() method that expects
+the next packet in the transfer, and returns a state object until the transfer
+is complete, at which point it returns None. That is, unless there is a fatal
+error, in which case a TftpException is returned instead."""
+
+
+from .TftpShared import *
+from .TftpPacketTypes import *
+import os
+import logging
+
+log = logging.getLogger('tftpy.TftpStates')
+
+###############################################################################
+# State classes
+###############################################################################
+
+class TftpState(object):
+    """The base class for the states."""
+
+    def __init__(self, context):
+        """Constructor for setting up common instance variables. The involved
+        file object is required, since in tftp there's always a file
+        involved."""
+        self.context = context
+
+    def handle(self, pkt, raddress, rport):
+        """An abstract method for handling a packet. It is expected to return
+        a TftpState object, either itself or a new state."""
+        raise NotImplementedError("Abstract method")
+
+    def handleOACK(self, pkt):
+        """This method handles an OACK from the server, syncing any accepted
+        options."""
+        if len(pkt.options.keys()) > 0:
+            if pkt.match_options(self.context.options):
+                log.info("Successful negotiation of options")
+                # Set options to OACK options
+                self.context.options = pkt.options
+                for key in self.context.options:
+                    log.info("    %s = %s" % (key, self.context.options[key]))
+            else:
+                log.error("Failed to negotiate options")
+                raise TftpException("Failed to negotiate options")
+        else:
+            raise TftpException("No options found in OACK")
+
+    def returnSupportedOptions(self, options):
+        """This method takes a requested options list from a client, and
+        returns the ones that are supported."""
+        # We support the options blksize and tsize right now.
+        # FIXME - put this somewhere else?
+        accepted_options = {}
+        for option in options:
+            if option == 'blksize':
+                # Make sure it's valid.
+                if int(options[option]) > MAX_BLKSIZE:
+                    log.info("Client requested blksize greater than %d "
+                             "setting to maximum" % MAX_BLKSIZE)
+                    accepted_options[option] = MAX_BLKSIZE
+                elif int(options[option]) < MIN_BLKSIZE:
+                    log.info("Client requested blksize less than %d "
+                             "setting to minimum" % MIN_BLKSIZE)
+                    accepted_options[option] = MIN_BLKSIZE
+                else:
+                    accepted_options[option] = options[option]
+            elif option == 'tsize':
+                log.debug("tsize option is set")
+                accepted_options['tsize'] = 0
+            else:
+                log.info("Dropping unsupported option '%s'" % option)
+        log.debug("Returning these accepted options: %s", accepted_options)
+        return accepted_options
+
+    def sendDAT(self):
+        """This method sends the next DAT packet based on the data in the
+        context. It returns a boolean indicating whether the transfer is
+        finished."""
+        finished = False
+        blocknumber = self.context.next_block
+        # Test hook
+        if DELAY_BLOCK and DELAY_BLOCK == blocknumber:
+            import time
+            log.debug("Deliberately delaying 10 seconds...")
+            time.sleep(10)
+        dat = None
+        blksize = self.context.getBlocksize()
+        buffer = self.context.fileobj.read(blksize)
+        log.debug("Read %d bytes into buffer", len(buffer))
+        if len(buffer) < blksize:
+            log.info("Reached EOF on file %s"
+                % self.context.file_to_transfer)
+            finished = True
+        dat = TftpPacketDAT()
+        dat.data = buffer
+        dat.blocknumber = blocknumber
+        self.context.metrics.bytes += len(dat.data)
+        log.debug("Sending DAT packet %d", dat.blocknumber)
+        self.context.sock.sendto(dat.encode().buffer,
+                                 (self.context.host, self.context.tidport))
+        if self.context.packethook:
+            self.context.packethook(dat)
+        self.context.last_pkt = dat
+        return finished
+
+    def sendACK(self, blocknumber=None):
+        """This method sends an ack packet to the block number specified. If
+        none is specified, it defaults to the next_block property in the
+        parent context."""
+        log.debug("In sendACK, passed blocknumber is %s", blocknumber)
+        if blocknumber is None:
+            blocknumber = self.context.next_block
+        log.info("Sending ack to block %d" % blocknumber)
+        ackpkt = TftpPacketACK()
+        ackpkt.blocknumber = blocknumber
+        self.context.sock.sendto(ackpkt.encode().buffer,
+                                 (self.context.host,
+                                  self.context.tidport))
+        self.context.last_pkt = ackpkt
+
+    def sendError(self, errorcode):
+        """This method uses the socket passed, and uses the errorcode to
+        compose and send an error packet."""
+        log.debug("In sendError, being asked to send error %d", errorcode)
+        errpkt = TftpPacketERR()
+        errpkt.errorcode = errorcode
+        if self.context.tidport == None:
+            log.debug("Error packet received outside session. Discarding")
+        else:
+            self.context.sock.sendto(errpkt.encode().buffer,
+                                     (self.context.host,
+                                      self.context.tidport))
+        self.context.last_pkt = errpkt
+
+    def sendOACK(self):
+        """This method sends an OACK packet with the options from the current
+        context."""
+        log.debug("In sendOACK with options %s", self.context.options)
+        pkt = TftpPacketOACK()
+        pkt.options = self.context.options
+        self.context.sock.sendto(pkt.encode().buffer,
+                                 (self.context.host,
+                                  self.context.tidport))
+        self.context.last_pkt = pkt
+
+    def resendLast(self):
+        "Resend the last sent packet due to a timeout."
+        log.warning("Resending packet %s on sessions %s"
+            % (self.context.last_pkt, self))
+        self.context.metrics.resent_bytes += len(self.context.last_pkt.buffer)
+        self.context.metrics.add_dup(self.context.last_pkt)
+        sendto_port = self.context.tidport
+        if not sendto_port:
+            # If the tidport wasn't set, then the remote end hasn't even
+            # started talking to us yet. That's not good. Maybe it's not
+            # there.
+            sendto_port = self.context.port
+        self.context.sock.sendto(self.context.last_pkt.encode().buffer,
+                                 (self.context.host, sendto_port))
+        if self.context.packethook:
+            self.context.packethook(self.context.last_pkt)
+
+    def handleDat(self, pkt):
+        """This method handles a DAT packet during a client download, or a
+        server upload."""
+        log.info("Handling DAT packet - block %d" % pkt.blocknumber)
+        log.debug("Expecting block %s", self.context.next_block)
+        if pkt.blocknumber == self.context.next_block:
+            log.debug("Good, received block %d in sequence", pkt.blocknumber)
+
+            self.sendACK()
+            self.context.next_block += 1
+
+            log.debug("Writing %d bytes to output file", len(pkt.data))
+            self.context.fileobj.write(pkt.data)
+            self.context.metrics.bytes += len(pkt.data)
+            # Check for end-of-file, any less than full data packet.
+            if len(pkt.data) < self.context.getBlocksize():
+                log.info("End of file detected")
+                return None
+
+        elif pkt.blocknumber < self.context.next_block:
+            if pkt.blocknumber == 0:
+                log.warning("There is no block zero!")
+                self.sendError(TftpErrors.IllegalTftpOp)
+                raise TftpException("There is no block zero!")
+            log.warning("Dropping duplicate block %d" % pkt.blocknumber)
+            self.context.metrics.add_dup(pkt)
+            log.debug("ACKing block %d again, just in case", pkt.blocknumber)
+            self.sendACK(pkt.blocknumber)
+
+        else:
+            # FIXME: should we be more tolerant and just discard instead?
+            msg = "Whoa! Received future block %d but expected %d" \
+                % (pkt.blocknumber, self.context.next_block)
+            log.error(msg)
+            raise TftpException(msg)
+
+        # Default is to ack
+        return TftpStateExpectDAT(self.context)
+
+class TftpServerState(TftpState):
+    """The base class for server states."""
+
+    def __init__(self, context):
+        TftpState.__init__(self, context)
+
+        # This variable is used to store the absolute path to the file being
+        # managed.
+        self.full_path = None
+
+    def serverInitial(self, pkt, raddress, rport):
+        """This method performs initial setup for a server context transfer,
+        put here to refactor code out of the TftpStateServerRecvRRQ and
+        TftpStateServerRecvWRQ classes, since their initial setup is
+        identical. The method returns a boolean, sendoack, to indicate whether
+        it is required to send an OACK to the client."""
+        options = pkt.options
+        sendoack = False
+        if not self.context.tidport:
+            self.context.tidport = rport
+            log.info("Setting tidport to %s" % rport)
+
+        log.debug("Setting default options, blksize")
+        self.context.options = { 'blksize': DEF_BLKSIZE }
+
+        if options:
+            log.debug("Options requested: %s", options)
+            supported_options = self.returnSupportedOptions(options)
+            self.context.options.update(supported_options)
+            sendoack = True
+
+        # FIXME - only octet mode is supported at this time.
+        if pkt.mode != 'octet':
+            #self.sendError(TftpErrors.IllegalTftpOp)
+            #raise TftpException("Only octet transfers are supported at this time.")
+            log.warning("Received non-octet mode request. I'll reply with binary data.")
+
+        # test host/port of client end
+        if self.context.host != raddress or self.context.port != rport:
+            self.sendError(TftpErrors.UnknownTID)
+            log.error("Expected traffic from %s:%s but received it "
+                            "from %s:%s instead."
+                            % (self.context.host,
+                               self.context.port,
+                               raddress,
+                               rport))
+            # FIXME: increment an error count?
+            # Return same state, we're still waiting for valid traffic.
+            return self
+
+        log.debug("Requested filename is %s", pkt.filename)
+
+        # Build the filename on this server and ensure it is contained
+        # in the specified root directory.
+        #
+        # Filenames that begin with server root are accepted. It's
+        # assumed the client and server are tightly connected and this
+        # provides backwards compatibility.
+        #
+        # Filenames otherwise are relative to the server root. If they
+        # begin with a '/' strip it off as otherwise os.path.join will
+        # treat it as absolute (regardless of whether it is ntpath or
+        # posixpath module
+        if pkt.filename.startswith(self.context.root):
+            full_path = pkt.filename
+        else:
+            full_path = os.path.join(self.context.root, pkt.filename.lstrip('/'))
+
+        # Use abspath to eliminate any remaining relative elements
+        # (e.g. '..') and ensure that is still within the server's
+        # root directory
+        self.full_path = os.path.abspath(full_path)
+        log.debug("full_path is %s", full_path)
+        if self.full_path.startswith(os.path.normpath(self.context.root) + os.sep):
+            log.info("requested file is in the server root - good")
+        else:
+            log.warning("requested file is not within the server root - bad")
+            self.sendError(TftpErrors.IllegalTftpOp)
+            raise TftpException("bad file path")
+
+        self.context.file_to_transfer = pkt.filename
+
+        return sendoack
+
+
+class TftpStateServerRecvRRQ(TftpServerState):
+    """This class represents the state of the TFTP server when it has just
+    received an RRQ packet."""
+    def handle(self, pkt, raddress, rport):
+        "Handle an initial RRQ packet as a server."
+        log.debug("In TftpStateServerRecvRRQ.handle")
+        sendoack = self.serverInitial(pkt, raddress, rport)
+        path = self.full_path
+        log.info("Opening file %s for reading" % path)
+        if os.path.exists(path):
+            # Note: Open in binary mode for win32 portability, since win32
+            # blows.
+            self.context.fileobj = open(path, "rb")
+        elif self.context.dyn_file_func:
+            log.debug("No such file %s but using dyn_file_func", path)
+            self.context.fileobj = \
+                self.context.dyn_file_func(self.context.file_to_transfer, raddress=raddress, rport=rport)
+
+            if self.context.fileobj is None:
+                log.debug("dyn_file_func returned 'None', treating as "
+                          "FileNotFound")
+                self.sendError(TftpErrors.FileNotFound)
+                raise TftpException("File not found: %s" % path)
+        else:
+            log.warning("File not found: %s", path)
+            self.sendError(TftpErrors.FileNotFound)
+            raise TftpException("File not found: {}".format(path))
+
+        # Options negotiation.
+        if sendoack and 'tsize' in self.context.options:
+            # getting the file size for the tsize option. As we handle
+            # file-like objects and not only real files, we use this seeking
+            # method instead of asking the OS
+            self.context.fileobj.seek(0, os.SEEK_END)
+            tsize = str(self.context.fileobj.tell())
+            self.context.fileobj.seek(0, 0)
+            self.context.options['tsize'] = tsize
+
+        if sendoack:
+            # Note, next_block is 0 here since that's the proper
+            # acknowledgement to an OACK.
+            # FIXME: perhaps we do need a TftpStateExpectOACK class...
+            self.sendOACK()
+            # Note, self.context.next_block is already 0.
+        else:
+            self.context.next_block = 1
+            log.debug("No requested options, starting send...")
+            self.context.pending_complete = self.sendDAT()
+        # Note, we expect an ack regardless of whether we sent a DAT or an
+        # OACK.
+        return TftpStateExpectACK(self.context)
+
+        # Note, we don't have to check any other states in this method, that's
+        # up to the caller.
+
+class TftpStateServerRecvWRQ(TftpServerState):
+    """This class represents the state of the TFTP server when it has just
+    received a WRQ packet."""
+    def make_subdirs(self):
+        """The purpose of this method is to, if necessary, create all of the
+        subdirectories leading up to the file to the written."""
+        # Pull off everything below the root.
+        subpath = self.full_path[len(self.context.root):]
+        log.debug("make_subdirs: subpath is %s", subpath)
+        # Split on directory separators, but drop the last one, as it should
+        # be the filename.
+        dirs = subpath.split(os.sep)[:-1]
+        log.debug("dirs is %s", dirs)
+        current = self.context.root
+        for dir in dirs:
+            if dir:
+                current = os.path.join(current, dir)
+                if os.path.isdir(current):
+                    log.debug("%s is already an existing directory", current)
+                else:
+                    os.mkdir(current, 0o700)
+
+    def handle(self, pkt, raddress, rport):
+        "Handle an initial WRQ packet as a server."
+        log.debug("In TftpStateServerRecvWRQ.handle")
+        sendoack = self.serverInitial(pkt, raddress, rport)
+        path = self.full_path
+        if self.context.upload_open:
+            f = self.context.upload_open(path, self.context)
+            if f is None:
+                self.sendError(TftpErrors.AccessViolation)
+                raise TftpException("Dynamic path %s not permitted" % path)
+            else:
+                self.context.fileobj = f
+        else:
+            log.debug("Opening file %s for writing" % path)
+            if os.path.exists(path):
+                # FIXME: correct behavior?
+                log.debug("File %s exists already, overwriting..." % (
+                    self.context.file_to_transfer))
+            # FIXME: I think we should upload to a temp file and not overwrite
+            # the existing file until the file is successfully uploaded.
+            self.make_subdirs()
+            self.context.fileobj = open(path, "wb")
+
+        # Options negotiation.
+        if sendoack:
+            log.debug("Sending OACK to client")
+            self.sendOACK()
+        else:
+            log.debug("No requested options, expecting transfer to begin...")
+            self.sendACK()
+        # Whether we're sending an oack or not, we're expecting a DAT for
+        # block 1
+        self.context.next_block = 1
+        # We may have sent an OACK, but we're expecting a DAT as the response
+        # to either the OACK or an ACK, so lets unconditionally use the
+        # TftpStateExpectDAT state.
+        return TftpStateExpectDAT(self.context)
+
+        # Note, we don't have to check any other states in this method, that's
+        # up to the caller.
+
+class TftpStateServerStart(TftpState):
+    """The start state for the server. This is a transitory state since at
+    this point we don't know if we're handling an upload or a download. We
+    will commit to one of them once we interpret the initial packet."""
+    def handle(self, pkt, raddress, rport):
+        """Handle a packet we just received."""
+        log.debug("In TftpStateServerStart.handle")
+        if isinstance(pkt, TftpPacketRRQ):
+            log.debug("Handling an RRQ packet")
+            return TftpStateServerRecvRRQ(self.context).handle(pkt,
+                                                               raddress,
+                                                               rport)
+        elif isinstance(pkt, TftpPacketWRQ):
+            log.debug("Handling a WRQ packet")
+            return TftpStateServerRecvWRQ(self.context).handle(pkt,
+                                                               raddress,
+                                                               rport)
+        else:
+            self.sendError(TftpErrors.IllegalTftpOp)
+            raise TftpException("Invalid packet to begin up/download: %s" % pkt)
+
+class TftpStateExpectACK(TftpState):
+    """This class represents the state of the transfer when a DAT was just
+    sent, and we are waiting for an ACK from the server. This class is the
+    same one used by the client during the upload, and the server during the
+    download."""
+    def handle(self, pkt, raddress, rport):
+        "Handle a packet, hopefully an ACK since we just sent a DAT."
+        if isinstance(pkt, TftpPacketACK):
+            log.debug("Received ACK for packet %d" % pkt.blocknumber)
+            # Is this an ack to the one we just sent?
+            if self.context.next_block == pkt.blocknumber:
+                if self.context.pending_complete:
+                    log.info("Received ACK to final DAT, we're done.")
+                    return None
+                else:
+                    log.debug("Good ACK, sending next DAT")
+                    self.context.next_block += 1
+                    log.debug("Incremented next_block to %d",
+                        self.context.next_block)
+                    self.context.pending_complete = self.sendDAT()
+
+            elif pkt.blocknumber < self.context.next_block:
+                log.warning("Received duplicate ACK for block %d"
+                    % pkt.blocknumber)
+                self.context.metrics.add_dup(pkt)
+
+            else:
+                log.warning("Oooh, time warp. Received ACK to packet we "
+                         "didn't send yet. Discarding.")
+                self.context.metrics.errors += 1
+            return self
+        elif isinstance(pkt, TftpPacketERR):
+            log.error("Received ERR packet from peer: %s" % str(pkt))
+            raise TftpException("Received ERR packet from peer: %s" % str(pkt))
+        else:
+            log.warning("Discarding unsupported packet: %s" % str(pkt))
+            return self
+
+class TftpStateExpectDAT(TftpState):
+    """Just sent an ACK packet. Waiting for DAT."""
+    def handle(self, pkt, raddress, rport):
+        """Handle the packet in response to an ACK, which should be a DAT."""
+        if isinstance(pkt, TftpPacketDAT):
+            return self.handleDat(pkt)
+
+        # Every other packet type is a problem.
+        elif isinstance(pkt, TftpPacketACK):
+            # Umm, we ACK, you don't.
+            self.sendError(TftpErrors.IllegalTftpOp)
+            raise TftpException("Received ACK from peer when expecting DAT")
+
+        elif isinstance(pkt, TftpPacketWRQ):
+            self.sendError(TftpErrors.IllegalTftpOp)
+            raise TftpException("Received WRQ from peer when expecting DAT")
+
+        elif isinstance(pkt, TftpPacketERR):
+            self.sendError(TftpErrors.IllegalTftpOp)
+            raise TftpException("Received ERR from peer: " + str(pkt))
+
+        else:
+            self.sendError(TftpErrors.IllegalTftpOp)
+            raise TftpException("Received unknown packet type from peer: " + str(pkt))
+
+class TftpStateSentWRQ(TftpState):
+    """Just sent an WRQ packet for an upload."""
+    def handle(self, pkt, raddress, rport):
+        """Handle a packet we just received."""
+        if not self.context.tidport:
+            self.context.tidport = rport
+            log.debug("Set remote port for session to %s", rport)
+
+        # If we're going to successfully transfer the file, then we should see
+        # either an OACK for accepted options, or an ACK to ignore options.
+        if isinstance(pkt, TftpPacketOACK):
+            log.info("Received OACK from server")
+            try:
+                self.handleOACK(pkt)
+            except TftpException:
+                log.error("Failed to negotiate options")
+                self.sendError(TftpErrors.FailedNegotiation)
+                raise
+            else:
+                log.debug("Sending first DAT packet")
+                self.context.pending_complete = self.sendDAT()
+                log.debug("Changing state to TftpStateExpectACK")
+                return TftpStateExpectACK(self.context)
+
+        elif isinstance(pkt, TftpPacketACK):
+            log.info("Received ACK from server")
+            log.debug("Apparently the server ignored our options")
+            # The block number should be zero.
+            if pkt.blocknumber == 0:
+                log.debug("Ack blocknumber is zero as expected")
+                log.debug("Sending first DAT packet")
+                self.context.pending_complete = self.sendDAT()
+                log.debug("Changing state to TftpStateExpectACK")
+                return TftpStateExpectACK(self.context)
+            else:
+                log.warning("Discarding ACK to block %s" % pkt.blocknumber)
+                log.debug("Still waiting for valid response from server")
+                return self
+
+        elif isinstance(pkt, TftpPacketERR):
+            self.sendError(TftpErrors.IllegalTftpOp)
+            raise TftpException("Received ERR from server: %s" % pkt)
+
+        elif isinstance(pkt, TftpPacketRRQ):
+            self.sendError(TftpErrors.IllegalTftpOp)
+            raise TftpException("Received RRQ from server while in upload")
+
+        elif isinstance(pkt, TftpPacketDAT):
+            self.sendError(TftpErrors.IllegalTftpOp)
+            raise TftpException("Received DAT from server while in upload")
+
+        else:
+            self.sendError(TftpErrors.IllegalTftpOp)
+            raise TftpException("Received unknown packet type from server: %s" % pkt)
+
+        # By default, no state change.
+        return self
+
+class TftpStateSentRRQ(TftpState):
+    """Just sent an RRQ packet."""
+    def handle(self, pkt, raddress, rport):
+        """Handle the packet in response to an RRQ to the server."""
+        if not self.context.tidport:
+            self.context.tidport = rport
+            log.info("Set remote port for session to %s" % rport)
+
+        # Now check the packet type and dispatch it properly.
+        if isinstance(pkt, TftpPacketOACK):
+            log.info("Received OACK from server")
+            try:
+                self.handleOACK(pkt)
+            except TftpException as err:
+                log.error("Failed to negotiate options: %s" % str(err))
+                self.sendError(TftpErrors.FailedNegotiation)
+                raise
+            else:
+                log.debug("Sending ACK to OACK")
+
+                self.sendACK(blocknumber=0)
+
+                log.debug("Changing state to TftpStateExpectDAT")
+                return TftpStateExpectDAT(self.context)
+
+        elif isinstance(pkt, TftpPacketDAT):
+            # If there are any options set, then the server didn't honour any
+            # of them.
+            log.info("Received DAT from server")
+            if self.context.options:
+                log.info("Server ignored options, falling back to defaults")
+                self.context.options = { 'blksize': DEF_BLKSIZE }
+            return self.handleDat(pkt)
+
+        # Every other packet type is a problem.
+        elif isinstance(pkt, TftpPacketACK):
+            # Umm, we ACK, the server doesn't.
+            self.sendError(TftpErrors.IllegalTftpOp)
+            raise TftpException("Received ACK from server while in download")
+
+        elif isinstance(pkt, TftpPacketWRQ):
+            self.sendError(TftpErrors.IllegalTftpOp)
+            raise TftpException("Received WRQ from server while in download")
+
+        elif isinstance(pkt, TftpPacketERR):
+            self.sendError(TftpErrors.IllegalTftpOp)
+            log.debug("Received ERR packet: %s", pkt)
+            if pkt.errorcode == TftpErrors.FileNotFound:
+                raise TftpFileNotFoundError("File not found")
+            else:
+                raise TftpException("Received ERR from server: {}".format(pkt))
+
+        else:
+            self.sendError(TftpErrors.IllegalTftpOp)
+            raise TftpException("Received unknown packet type from server: %s" % pkt)
+
+        # By default, no state change.
+        return self
diff --git a/blcu-programming/tftp/__init__.py b/blcu-programming/tftp/__init__.py
new file mode 100644
index 000000000..88a7f5d83
--- /dev/null
+++ b/blcu-programming/tftp/__init__.py
@@ -0,0 +1,13 @@
+# vim: ts=4 sw=4 et ai:
+# -*- coding: utf8 -*-
+"""
+This library implements the tftp protocol, based on rfc 1350.
+http://www.faqs.org/rfcs/rfc1350.html
+At the moment it implements only a client class, but will include a server,
+with support for variable block sizes.
+
+As a client of tftpy, this is the only module that you should need to import
+directly. The TftpClient and TftpServer classes can be reached through it.
+"""
+
+
diff --git a/blcu-programming/tftp/compat.py b/blcu-programming/tftp/compat.py
new file mode 100644
index 000000000..00493963c
--- /dev/null
+++ b/blcu-programming/tftp/compat.py
@@ -0,0 +1,15 @@
+import sys
+
+def binary_stdin():
+    """
+    Get a file object for reading binary bytes from stdin instead of text.
+    Compatible with Py2/3, POSIX & win32.
+    Credits: https://stackoverflow.com/a/38939320/531179 (CC BY-SA 3.0)
+    """
+    if hasattr(sys.stdin, 'buffer'): # Py3+
+        return sys.stdin.buffer
+    else:
+        if sys.platform == 'win32':
+            import os, msvcrt
+            msvcrt.setmode(sys.stdin.fileno(), os.O_BINARY)
+        return sys.stdin
diff --git a/electron-app/main.js b/electron-app/main.js
index 39ff4fb6f..224aea7dd 100644
--- a/electron-app/main.js
+++ b/electron-app/main.js
@@ -10,6 +10,7 @@ import { getConfigManager } from "./src/config/configInstance.js";
 import { setupIpcHandlers } from "./src/ipc/handlers.js";
 import { startBackend, stopBackend } from "./src/processes/backend.js";
 import { stopPacketSender } from "./src/processes/packetSender.js";
+import { startBlcuProgramming, stopBlcuProgramming } from "./src/processes/blcuProgramming.js";
 import { logger } from "./src/utils/logger.js";
 import { createLogWindow } from "./src/windows/logWindow.js";
 import { createWindow } from "./src/windows/mainWindow.js";
@@ -42,6 +43,13 @@ app.whenReady().then(async () => {
     // Start backend already shows these errors
   }
 
+  try {
+    await startBlcuProgramming(logWindow);
+    logger.electron.header("BLCU programming process spawned");
+  } catch (error) {
+    logger.electron.error("Failed to start BLCU programming:", error);
+  }
+
   // Create main application window
   const mainWindow = createWindow(screenWidth, screenHeight);
   mainWindow.maximize();
@@ -100,7 +108,7 @@ app.on("window-all-closed", () => {
 // Cleanup before app quits
 app.on("before-quit", (e) => {
   e.preventDefault();
-  Promise.all([stopBackend(), stopPacketSender()])
+  Promise.all([stopBackend(), stopPacketSender(), stopBlcuProgramming()])
     .catch((error) => logger.electron.error("Error during shutdown:", error))
     .finally(() => app.exit());
 });
diff --git a/electron-app/src/processes/blcuProgramming.js b/electron-app/src/processes/blcuProgramming.js
new file mode 100644
index 000000000..1721db77b
--- /dev/null
+++ b/electron-app/src/processes/blcuProgramming.js
@@ -0,0 +1,83 @@
+import { spawn } from "child_process";
+import fs from "fs";
+import path from "path";
+import { logger } from "../utils/logger.js";
+import { getAppPath } from "../utils/paths.js";
+
+let blcuProgrammingProcess = null;
+
+function getBlcuProgrammingRepoPath() {
+  return path.join(getAppPath(), "..", "blcu-programming");
+}
+
+function getPythonExecutable(repoPath) {
+  if (process.platform === "win32") {
+    return path.join(repoPath, ".venv", "Scripts", "python.exe");
+  }
+
+  return path.join(repoPath, ".venv", "bin", "python");
+}
+
+async function startBlcuProgramming() {
+  if (blcuProgrammingProcess && !blcuProgrammingProcess.killed) {
+    return blcuProgrammingProcess;
+  }
+
+  const repoPath = getBlcuProgrammingRepoPath();
+  const pythonBin = getPythonExecutable(repoPath);
+  const entrypointPath = path.join(repoPath, "api", "main.py");
+
+  if (!fs.existsSync(entrypointPath)) {
+    logger.process(
+      "BLCU Programming",
+      `Entrypoint not found at ${entrypointPath}`,
+    );
+    return null;
+  }
+
+  if (!fs.existsSync(pythonBin)) {
+    logger.process(
+      "BLCU Programming",
+      `Python executable not found at ${pythonBin}`,
+    );
+    return null;
+  }
+
+  blcuProgrammingProcess = spawn(
+    pythonBin,
+    ["-m", "uvicorn", "api.main:app"],
+    {
+      cwd: repoPath,
+      env: {
+        ...process.env,
+        PYTHONUNBUFFERED: "1",
+      },
+    },
+  );
+
+  blcuProgrammingProcess.stdout.on("data", (data) => {
+    logger.process("BLCU Programming", data.toString().trim());
+  });
+
+  blcuProgrammingProcess.stderr.on("data", (data) => {
+    logger.process("BLCU Programming", data.toString().trim());
+  });
+
+  blcuProgrammingProcess.on("close", (code) => {
+    logger.process("BLCU Programming", `Process exited with code ${code}`);
+    blcuProgrammingProcess = null;
+  });
+
+  return blcuProgrammingProcess;
+}
+
+async function stopBlcuProgramming() {
+  if (!blcuProgrammingProcess || blcuProgrammingProcess.killed) {
+    return;
+  }
+
+  blcuProgrammingProcess.kill("SIGTERM");
+  blcuProgrammingProcess = null;
+}
+
+export { startBlcuProgramming, stopBlcuProgramming };