aspnetcore/samples/ChatSample/Views/Home/Index.cshtml

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@{
ViewData["Title"] = "Chat";
}
@*<link rel="stylesheet" href="~/css/chat.css" />*@
<script>
function hubConnection(url) {
var ws = new WebSocket(url);
var id = 0;
var calls = {};
var methods = {};
ws.onopen = function () {
console.log('Opened!');
};
ws.onmessage = function (event) {
let response = {};
//if (document.getElementById('formatType').value == 'line') {
// let parts = event.data.split(',');
// if (event.data[0] == 'R') {
// response.Id = parts[0].slice(2);
// response.Result = parts[1].slice(1);
// }
// else if (event.data[0] == 'C') {
// response.Method = parts[1].slice(1);
// response.Arguments = parts.slice(2).join();
// }
// else {
// response.error = parts[0].slice(1);
// }
//}
//else {
response = JSON.parse(event.data);
//}
// Response
if (response.Id) {
var cb = calls[response.Id];
delete calls[response.Id];
if (response.Error) {
cb.error(response.Error);
}
else {
cb.success(response.Result);
}
}
else {
// Reverse JSON RPC
methods[response.Method](response.Arguments);
}
};
ws.onclose = function (event) {
console.log('Closed!');
};
this.invoke = function (method, args, formatType) {
return new Promise((resolve, reject) => {
calls[id] = { success: resolve, error: reject };
if (formatType == 'line') {
ws.send(`CI${id},M${method},${args.join()}\n`);
}
else {
ws.send(JSON.stringify({ method: method, arguments: args, id: id }));
}
id++;
});
};
this.on = function (method, fn) {
methods[method] = fn;
};
}
document.addEventListener('DOMContentLoaded', () => {
run('json');
});
function run(formatType) {
var conn = new hubConnection(`ws://${document.location.host}/hubs/ws?formatType=${formatType}`);
conn.on('Send', function (message) {
var child = document.createElement('li');
child.innerText = message;
document.getElementById('messages').appendChild(child);
});
document.getElementById('sendmessage').addEventListener('submit', event => {
let data = document.getElementById('new-message').value;
conn.invoke('ChatSample.Hubs.Chat.Send', [data], formatType).catch(err => {
var child = document.createElement('li');
child.style.color = 'red';
child.innerText = err;
document.getElementById('messages').appendChild(child);
});
event.preventDefault();
});
};
</script>
<div id="chat-area">
<ul id="messages"></ul>
<ul id="users"></ul>
<div class="clear">
</div>
<form id="sendmessage" action="#">
<input type="text" id="new-message" />
<input type="submit" id="send" value="Send" class="send" />
</form>
</div>