Send keyer commands from JavaScript

[hcarter333]

Using the code from the ham radio exam, send key down and key up commands over wifi to the pico keyer.

[hcarter333]

Starting from here

         var score_params = "tclass=" +
                      encodeURIComponent(test_type) + 
                      "&name=" + encodeURIComponent(login_user) +
                      "&elementscores=" + encodeURIComponent(score_str) +
                      "&passedseen=" + encodeURIComponent(passedseen_str);

       //Now send the scores to the db
        if (typeof XMLHttpRequest != "undefined") {
            req = new XMLHttpRequest();
        } else if (window.ActiveXObject) {
            req = new ActiveXObject("Microsoft.XMLHTTP");
        }

        req.open("GET", '/hamtestscore', true);
        req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

        req.onreadystatechange = log_scores_cb;
        req.send(score_params);

[hcarter333]

js message post:

client connected from ('192.168.4.16', 64930)
b'GET /light/on HTTP/1.1\r\nHost: 192.168.4.1\r\nConnection: keep-alive\r\nUser-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36\r\nContent-type: application/x-www-form-urlencoded\r\nAccept: */*\r\nOrigin: null\r\nAccept-Encoding: gzip, deflate\r\nAccept-Language: en-US,en;q=0.9\r\n\r\n'

python message post

client connected from ('192.168.4.16', 64952)
b'GET /light/on?msg=k HTTP/1.1\r\nHost: 192.168.4.1\r\nUser-Agent: python-requests/2.31.0\r\nAccept-Encoding: gzip, deflate\r\nAccept: */*\r\nConnection: keep-alive\r\n\r\n'

So the arguments are missing. The orisingal command in the exam file as a POST. Trying that instead.

Nope:

Trying a better GET

[hcarter333]

GET mostly works, but sometimes the Pico gets messages sent twice from JavaScript

https://stackoverflow.com/questions/15958026/getting-errno-9-bad-file-descriptor-in-python-socket

[hcarter333]

No repeated commadns now, just extra commands. Geesh. May have to do with just Python. Also getting connection closed [Errno 9] EBADF

[hcarter333]

connection closed [Errno 9] EBADF

Wound up being caused by an extra client close in the main.py script. It has been resolved.

[hcarter333]

This isn't going to work without a much more complete web server on the pico-W and a much better understanding of what a web browser typically sends. I'm closing it for now. We have other ways to do this with Python.

[hcarter333]

Finished for the moment.