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@anlumo anlumo Preserve websocket server IP over reloading the web page. 03492fe Mar 2, 2019
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@pfalcon @dpgeorge @mcauser @anlumo
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<!doctype html>
<html>
<head>
<title>MicroPython WebREPL</title>
<!--
term.js
Copyright (c) 2012-2013, Christopher Jeffrey (MIT License)
Copyright (c) 2016, Paul Sokolovsky
-->
<style>
html {
background: #555;
}
h1 {
margin-bottom: 20px;
font: 20px/1.5 sans-serif;
}
/*
.terminal {
float: left;
border: #000 solid 5px;
font-family: "DejaVu Sans Mono", "Liberation Mono", monospace;
font-size: 11px;
color: #f0f0f0;
background: #000;
}
.terminal-cursor {
color: #000;
background: #f0f0f0;
}
*/
.file-box {
margin: 4px;
padding: 4px;
background: #888;
}
</style>
<script src="term.js"></script>
<script src="FileSaver.js"></script>
</head>
<body>
<div style="display:inline-block; vertical-align:top;">
<form>
<input type="text" name="webrepl_url" id="url" value="ws://192.168.4.1:8266/" />
<input type="submit" id="button" value="Connect" onclick="button_click(); return false;" />
</form>
<div id="term">
</div>
</div>
<div id="file-boxes" style="display:inline-block; vertical-align:top; width:230px;">
<div class="file-box">
<strong>Send a file</strong>
<input type="file" id="put-file-select" />
<div id="put-file-list"></div>
<input type="button" value="Send to device" id="put-file-button" onclick="put_file(); return false;" />
</div>
<div class="file-box">
<strong>Get a file</strong>
<input type="text" name="get_filename" id="get_filename" value="" size="13" />
<input type="button" value="Get from device" onclick="get_file(); return false;" />
</div>
<div class="file-box" id="file-status"><span style="color:#707070">(file operation status)</span></div>
</div>
<br clear="both" />
<i>Terminal widget should be focused (text cursor visible) to accept input. Click on it if not.</i><br/>
<i>To paste, press Ctrl+A, then Ctrl+V</i>
</body>
<script>
;
var term;
var ws;
var connected = false;
var binary_state = 0;
var put_file_name = null;
var put_file_data = null;
var get_file_name = null;
var get_file_data = null;
function calculate_size(win) {
var cols = Math.max(80, Math.min(150, (win.innerWidth - 280) / 7)) | 0;
var rows = Math.max(24, Math.min(80, (win.innerHeight - 180) / 12)) | 0;
return [cols, rows];
}
(function() {
window.onload = function() {
var url = window.location.hash.substring(1);
if (url) {
document.getElementById('url').value = 'ws://' + url;
}
var size = calculate_size(self);
term = new Terminal({
cols: size[0],
rows: size[1],
useStyle: true,
screenKeys: true,
cursorBlink: false
});
term.open(document.getElementById("term"));
show_https_warning();
};
window.addEventListener('resize', function() {
var size = calculate_size(self);
term.resize(size[0], size[1]);
});
}).call(this);
function show_https_warning() {
if (window.location.protocol == 'https:') {
var warningDiv = document.createElement('div');
warningDiv.style.cssText = 'background:#f99;padding:5px;margin-bottom:10px;line-height:1.5em;text-align:center';
warningDiv.innerHTML = [
'At this time, the WebREPL client cannot be accessed over HTTPS connections.',
'Use a HTTP connection, eg. <a href="http://micropython.org/webrepl/">http://micropython.org/webrepl/</a>.',
'Alternatively, download the files from <a href="https://github.com/micropython/webrepl">GitHub</a> and run them locally.'
].join('<br>');
document.body.insertBefore(warningDiv, document.body.childNodes[0]);
term.resize(term.cols, term.rows - 7);
}
}
function button_click() {
if (connected) {
ws.close();
} else {
document.getElementById('url').disabled = true;
document.getElementById('button').value = "Disconnect";
connected = true;
connect(document.getElementById('url').value);
}
}
function prepare_for_connect() {
document.getElementById('url').disabled = false;
document.getElementById('button').value = "Connect";
}
function update_file_status(s) {
document.getElementById('file-status').innerHTML = s;
}
function connect(url) {
window.location.hash = url.substring(5);
ws = new WebSocket(url);
ws.binaryType = 'arraybuffer';
ws.onopen = function() {
term.removeAllListeners('data');
term.on('data', function(data) {
// Pasted data from clipboard will likely contain
// LF as EOL chars.
data = data.replace(/\n/g, "\r");
ws.send(data);
});
term.on('title', function(title) {
document.title = title;
});
term.focus();
term.element.focus();
term.write('\x1b[31mWelcome to MicroPython!\x1b[m\r\n');
ws.onmessage = function(event) {
if (event.data instanceof ArrayBuffer) {
var data = new Uint8Array(event.data);
switch (binary_state) {
case 11:
// first response for put
if (decode_resp(data) == 0) {
// send file data in chunks
for (var offset = 0; offset < put_file_data.length; offset += 1024) {
ws.send(put_file_data.slice(offset, offset + 1024));
}
binary_state = 12;
}
break;
case 12:
// final response for put
if (decode_resp(data) == 0) {
update_file_status('Sent ' + put_file_name + ', ' + put_file_data.length + ' bytes');
} else {
update_file_status('Failed sending ' + put_file_name);
}
binary_state = 0;
break;
case 21:
// first response for get
if (decode_resp(data) == 0) {
binary_state = 22;
var rec = new Uint8Array(1);
rec[0] = 0;
ws.send(rec);
}
break;
case 22: {
// file data
var sz = data[0] | (data[1] << 8);
if (data.length == 2 + sz) {
// we assume that the data comes in single chunks
if (sz == 0) {
// end of file
binary_state = 23;
} else {
// accumulate incoming data to get_file_data
var new_buf = new Uint8Array(get_file_data.length + sz);
new_buf.set(get_file_data);
new_buf.set(data.slice(2), get_file_data.length);
get_file_data = new_buf;
update_file_status('Getting ' + get_file_name + ', ' + get_file_data.length + ' bytes');
var rec = new Uint8Array(1);
rec[0] = 0;
ws.send(rec);
}
} else {
binary_state = 0;
}
break;
}
case 23:
// final response
if (decode_resp(data) == 0) {
update_file_status('Got ' + get_file_name + ', ' + get_file_data.length + ' bytes');
saveAs(new Blob([get_file_data], {type: "application/octet-stream"}), get_file_name);
} else {
update_file_status('Failed getting ' + get_file_name);
}
binary_state = 0;
break;
case 31:
// first (and last) response for GET_VER
console.log('GET_VER', data);
binary_state = 0;
break;
}
}
term.write(event.data);
};
};
ws.onclose = function() {
connected = false;
if (term) {
term.write('\x1b[31mDisconnected\x1b[m\r\n');
}
term.off('data');
prepare_for_connect();
}
}
function decode_resp(data) {
if (data[0] == 'W'.charCodeAt(0) && data[1] == 'B'.charCodeAt(0)) {
var code = data[2] | (data[3] << 8);
return code;
} else {
return -1;
}
}
function put_file() {
var dest_fname = put_file_name;
var dest_fsize = put_file_data.length;
// WEBREPL_FILE = "<2sBBQLH64s"
var rec = new Uint8Array(2 + 1 + 1 + 8 + 4 + 2 + 64);
rec[0] = 'W'.charCodeAt(0);
rec[1] = 'A'.charCodeAt(0);
rec[2] = 1; // put
rec[3] = 0;
rec[4] = 0; rec[5] = 0; rec[6] = 0; rec[7] = 0; rec[8] = 0; rec[9] = 0; rec[10] = 0; rec[11] = 0;
rec[12] = dest_fsize & 0xff; rec[13] = (dest_fsize >> 8) & 0xff; rec[14] = (dest_fsize >> 16) & 0xff; rec[15] = (dest_fsize >> 24) & 0xff;
rec[16] = dest_fname.length & 0xff; rec[17] = (dest_fname.length >> 8) & 0xff;
for (var i = 0; i < 64; ++i) {
if (i < dest_fname.length) {
rec[18 + i] = dest_fname.charCodeAt(i);
} else {
rec[18 + i] = 0;
}
}
// initiate put
binary_state = 11;
update_file_status('Sending ' + put_file_name + '...');
ws.send(rec);
}
function get_file() {
var src_fname = document.getElementById('get_filename').value;
// WEBREPL_FILE = "<2sBBQLH64s"
var rec = new Uint8Array(2 + 1 + 1 + 8 + 4 + 2 + 64);
rec[0] = 'W'.charCodeAt(0);
rec[1] = 'A'.charCodeAt(0);
rec[2] = 2; // get
rec[3] = 0;
rec[4] = 0; rec[5] = 0; rec[6] = 0; rec[7] = 0; rec[8] = 0; rec[9] = 0; rec[10] = 0; rec[11] = 0;
rec[12] = 0; rec[13] = 0; rec[14] = 0; rec[15] = 0;
rec[16] = src_fname.length & 0xff; rec[17] = (src_fname.length >> 8) & 0xff;
for (var i = 0; i < 64; ++i) {
if (i < src_fname.length) {
rec[18 + i] = src_fname.charCodeAt(i);
} else {
rec[18 + i] = 0;
}
}
// initiate get
binary_state = 21;
get_file_name = src_fname;
get_file_data = new Uint8Array(0);
update_file_status('Getting ' + get_file_name + '...');
ws.send(rec);
}
function get_ver() {
// WEBREPL_REQ_S = "<2sBBQLH64s"
var rec = new Uint8Array(2 + 1 + 1 + 8 + 4 + 2 + 64);
rec[0] = 'W'.charCodeAt(0);
rec[1] = 'A'.charCodeAt(0);
rec[2] = 3; // GET_VER
// rest of "rec" is zero
// initiate GET_VER
binary_state = 31;
ws.send(rec);
}
function handle_put_file_select(evt) {
// The event holds a FileList object which is a list of File objects,
// but we only support single file selection at the moment.
var files = evt.target.files;
// Get the file info and load its data.
var f = files[0];
put_file_name = f.name;
var reader = new FileReader();
reader.onload = function(e) {
put_file_data = new Uint8Array(e.target.result);
document.getElementById('put-file-list').innerHTML = '' + escape(put_file_name) + ' - ' + put_file_data.length + ' bytes';
document.getElementById('put-file-button').disabled = false;
};
reader.readAsArrayBuffer(f);
}
document.getElementById('put-file-select').addEventListener('click', function(){
this.value = null;
}, false);
document.getElementById('put-file-select').addEventListener('change', handle_put_file_select, false);
document.getElementById('put-file-button').disabled = true;
</script>
</html>
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