http-server

A multiplexing http webserver capable of running on a Raspberry Pi. Built in C.

The webserver stores "notes" that are displayed in a basic HTML table.

Notes can be retrieved through GET or added with POST

Example GET Request

• When the server is running, the browser can be used to query the list of notes in the database
• The notes can also be filtered with query params in the URL such as to, from and id

Example POST Request

• The database of notes can be added to by POSTing the data
  • The data requires the to, from, and note strings
• The data cannot be passed in the POST as query parameters
• Example CURL POST request:

curl -X POST http://192.168.1.225:2000/ -d "to=Ryan" -d "from=Eric" -d "note=Go to Costco to join the membership"

Example Serving Multiple Clients

• The HTTP webserver is capable of serving multiple clients at once
• The database results can be filtered with query params!

Notes

typedef struct inote {
    char to[32];
    char from[32];
    char note[256];
    unsigned int id;
} inote_t; 

• The notes are basic structs containig the elements as shown above

Setup Raspberry Pi To Be HTTP-Server

Confirm the Pi is up-to-date

sudo apt update
sudo apt upgrade
sudo apt install gcc
sudo apt install build-essential

• scp the project files to the pi

Copy project over to Pi

ssh pi@192.168.1.225 "mkdir -p /home/pi/http-server"
scp -r src/ Makefile  pi@192.168.1.225:/home/pi/http-server/

• Ensure these commands are being done in the root of this git repo/directory
• Create a http-server directory on the Pi in case one does not exist yet
• SCP over only the relevant files from the repo
  • That is the Makefile and the src/ dir

Build project on the Pi

pi@raspberrypi:~/http-server $ make

• SSH into the Pi and run make within the root of the http-server directory

Run the HTTP server!

pi@raspberrypi:~/http-server $ ./server
Server is up and available through:
lo - 127.0.0.1:2000
wlan0 - 192.168.1.225:2000
Server ready to service client msgs.