Updated Python HTTP OTA Server (markdown)

Python-HTTP-OTA-Server.md

@@ -12,7 +12,7 @@ to superuser privileges and installing additional packages (and libraries) on hi
 
 Python makes available Flask (micro)framework (http://flask.pocoo.org) that can be used at different levels of complexity due to its modular architecture. A simple HTTP server (hello-world) can be developed only by *six* lines of Python code (http://flask.pocoo.org/docs/1.0/quickstart/#a-minimal-application).
 
-A Flask application to offer Sonoff-Tasmota firmware images for OTA upgrades is available in 'tools' directory (https://github.com/arendst/Sonoff-Tasmota/blob/development/tools/fw-server.py).
+A Flask application to offer Sonoff-Tasmota firmware images for OTA upgrades is available in 'tools' directory (https://github.com/arendst/Sonoff-Tasmota/tree/development/tools/fw_server/fw-server.py).
 
 ## Requirements
 
@@ -62,4 +62,57 @@ python fw-server.py -i 192.168.1.1
 
 On Windows operating system it is advisable to use '-i' option because Windows uses UUID name for network interfaces that are not so easy to type...
 
+## Linux server:
+
+If your MQTT broker is hosted on a local server, you may want Tasmota OTA to work the same, as a service. Here is how to achieve this:
+
+- Copy the python script on the linux server
+```
+$ sudo su
+# mkdir /srv/tasmota/fw_server/fw
+# cd /srv/tasmota/fw_server
+# wget https://github.com/arendst/Sonoff-Tasmota/tree/development/tools/fw_server/fw-server.py
+```
+- Create a new file '/etc/systemd/system/tasmota.service' and copy those lines :
+```
+[Unit]
+Description=Local OTA server for Tasmota
+Requires=network.target
+After=network.target multi-user.target
+ 
+[Service]
+#User=XYZ
+Type=idle
+ExecStart=/usr/bin/python /srv/tasmota/fw_server/fw-server.py -d wlan0
+Restart=on-failure
+ 
+[Install]
+WantedBy=multi-user.target
+```
+- User rights
+
+We have created those files and directories as root but it is not desirable, the option `User=XYZ` should be uncommented and `XYZ` replaced by you usernane.
+
+In the following command too, replace twice `XYZ` by your username :
+```
+# chown -hR XYZ:XYZ /srv/tasmota
+```
+- Run the service
+```
+# systemctl daemon-reload
+# systemctl enable tasmota.service
+# systemctl start tasmota.service
+```
+- Check the service is active and runnning.
+```
+# systemctl status tasmota.service
+```
+- Test of the server
+
+To feed the server, we're now able to copy new firmwares in the folder `/srv/tasmota/fw_server/fw` with `XYZ` user rights. It can be done with `scp` or `samba` for instance.
+Let's upload `firmware.bin` into the folder, the service can be tested from any browser by issuing the address `http://<ip_address>:5000/firmware.bin` were <ip_address> is the adress of the linux server.
+If you reboot the server, the service should startup again.
+
+Now if you want PlatformIO to be able to upload your compiled binaries to the local server, you'll still have to setup `ssh` with `ssh-keygen` in order to use the Tasmota script `pio/sftp-uploader.py` without password.
+