Faraday-Proxy Should Handle Lists of POST Data

[kb1lqc]

Summary

Check and fix any errors associated with sending data lists to Proxy via a POST HTTP message. This will help with Data applications. Initial support has been added for this feature but it is apparently broken.

Problem Explanation

• Check that Faraday can or cannot handle list data in BASE64 format sent to it.

@kb1lqd

• If not, fix.

Environment

Software

Faraday Software Master branch

Hardware

Faraday Rev D1

Supporting Information

N/A

[kb1lqc]

Confirming that list support still exists. The documentation is poor 🙄. Hehe. Using POSTman in Chrome I was able to confirm that you can send a list of either one payload or multiple. It is important to remember in python you must dump to JSON with json.dumps()!

LED Commands

BASE64 commands to turn the LEDs on and off include:

LED ON

POST  HTTP/1.1
Host: 127.0.0.1:8000?port=2&nodeid=2&callsign=KB1LQC
Content-Type: application/json
Cache-Control: no-cache
Postman-Token: 010369e5-d416-732e-bfb6-f4cbe9a8587b

{
	"data":["BQZAAACA/wwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHW"]
}

LED OFF

POST  HTTP/1.1
Host: 127.0.0.1:8000?port=2&nodeid=2&callsign=KB1LQC
Content-Type: application/json
Cache-Control: no-cache
Postman-Token: 9d1edba1-b34b-836e-f065-f172f992f9f2

{
	"data":["BQYAAADA/wwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHW"]
}

Python Payload

In Python a valid request would be:

import requests
import json

url = "http://127.0.0.1:8000/"

querystring = {"port":"2","nodeid":"2","callsign":"KB1LQC"}

payload = {"data":["BQZAAACA/wwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHW"]}
payload = json.dumps(payload)
headers = {
    'content-type': "application/json",
    'cache-control': "no-cache"
    }

response = requests.request("POST", url, data=payload, headers=headers, params=querystring)

print(response.text)

Multiple Packets

All we need to do is make the dictionary a list in python before using json.dumps(). The code below sends an LED ON command as the first item and an LED OFF command as the second item:

import requests
import json

url = "http://127.0.0.1:8000/"

querystring = {"port":"2","nodeid":"2","callsign":"KB1LQC"}

payload = {"data":[
                    "BQZAAACA/wwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHW",
                    "BQYAAADA/wwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHW"]}
payload = json.dumps(payload)
headers = {
    'content-type': "application/json",
    'cache-control': "no-cache"
    }

response = requests.request("POST", url, data=payload, headers=headers, params=querystring)

print(response.text)

[kb1lqc]

FYI @kb1lqd there is currently a maximum length of 100 items in the list. Let me know if this should be changed. Sorta arbitrary.