[英]How to send and get data from the server using Ratchet
這是我第一次使用套接字,並從Ratchet開始使用,但是我嚴重無法適應它。 仍然嘗試將本教程中的某些部分結合在一起,但遇到了一些問題。 另外,我想知道如何與它一起使用autobahn.js 。 這些教程不清楚。
我的問題
1)如何向所有用戶發送消息,當前用戶除外,說明“ ...已加入”,而“ ...”必須是該用戶的ip。
我嘗試了以下操作,但它在終端上給了我錯誤。
public function onOpen(ConnectionInterface $conn) {
// Store the new connection to send messages to later
$this->clients->attach($conn);
$this->send('new');
echo "New connection! ({$conn->remoteAddress})\n";
}
調用未定義的方法MyApp \\ Chat :: send()
2)怎么做,以便在發送消息時,所有各方(包括正在發送消息的人)都可以查看該消息(這就是每次聊天的工作方式)?
JS
var conn = new WebSocket('ws://localhost:8080');
conn.onopen = function(e) {
//console.log("Connection established!");
$("#chat_window #messages_list").append("<li class='join_disconnect'>127.0.0.1 Online</li>");
}
conn.onmessage = function(e) {
//console.log(e.data);
$("#chat_window #messages_list").append("<li class='thread'>"+e.data+"</li>");
}
conn.onclose = function(e) {
//console.log("Connection Disconnected!");
$("#chat_window #messages_list").append("<li class='join_disconnect'>127.0.0.1 Offline</li>");
};
$(document).ready(function(){
disable_button();
//EMERGENCY EXIT
$('#exit').click(function(){
window.location.replace('http://www.google.com');
});
//PREVENT BLANK INPUT
$('#msg').on('keyup', function(e){
if($(this).val().length>0){
enable_button();
}
else{
disable_button();
}
});
//SEND MESSAGE
$('#snd').click(function(){
var thread = $('#msg').val();
//console.log(thread);
//conn.send(thread);
$.ajax({
type:'POST',
url: './bin/send-message.php',
data: {msg: thread},
success: function(response){
//alert(response);
if(response!=1){
$('#msg').val('');
disable_button();
}
}
});
});
//ENABLE BUTTON
function enable_button() {
var element = document.getElementById('snd');
$(element).addClass('active');
element.style.pointerEvents = '';
}
//DISABLE BUTTON
function disable_button() {
var element = document.getElementById('snd');
$(element).removeClass('active');
element.style.pointerEvents = 'none';
}
});
我知道這些問題很多,但我真的很想知道。 如果有任何循序漸進的易學教程,也歡迎您。
如果您嘗試從Rachet網站的教程中更改示例,那么第一個問題解決方案是:
public function onOpen(ConnectionInterface $conn) {
// first, you are sending to all existing users message of 'new'
foreach ($this->clients as $client) {
$client->send('new');
}
// than,
// Store the new connection to send messages to later
$this->clients->attach($conn);
echo "New connection! ({$conn->resourceId})\n";
}
關於第二個問題,如果我說對了,您應該向所有連接的客戶端發送新消息,如下所示:
public function onMessage(ConnectionInterface $from, $msg) {
$numRecv = count($this->clients) - 1;
echo sprintf('Connection %d sending message "%s" to %d other connection%s' . "\n"
, $from->resourceId, $msg, $numRecv, $numRecv == 1 ? '' : 's');
foreach ($this->clients as $client) {
// remove this check
// if ($from !== $client) {
// The sender is not the receiver, send to each client connected
// $client->send($msg);
// }
// just send to all
$client->send($msg);
}
}
更新 :完整的解決方案。
在Chat.php
,您需要修改一些方法:
public function onOpen(ConnectionInterface $conn) {
// first, you are sending to all existing users message of 'new'
foreach ($this->clients as $client) {
$client->send('<status>' . $conn->remoteAddress . ' Online</status>'); //here we are sending a status-message
}
// than,
// Store the new connection to send messages to later
$this->clients->attach($conn);
echo "New connection! ({$conn->remoteAddress})\n";
}
public function onClose(ConnectionInterface $conn) {
// The connection is closed, remove it, as we can no longer send it messages
$this->clients->detach($conn);
//send to others clients message about disconnected user
foreach ($this->clients as $client) {
$client->send('<status>' . $conn->remoteAddress . ' Offline</status>'); //here we are sending a status-message too
}
echo "Connection {$conn->remoteAddress} has disconnected\n";
}
在您的js
代碼中,修改下一個方法:
conn.onmessage = function(e) {
//console.log(e.data);
var match = e.data.match(/^<status>(.*?)<\/status>$/i);
if (match) {
if (/\d+\.\d+\.\d+\.\d+ online/i.test(match[1])) {
messages.append('<li class="join_connect">' + match[1] + "</li>");
} else if (/\d+\.\d+\.\d+\.\d+ offline/i.test(match[1])) {
messages.append('<li class="join_disconnect">' + match[1] + "</li>");
}
} else {
messages.append('<li class="thread">' + e.data + "</li>");
}
};
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