【发布时间】：2015-08-14 18:24:15
【问题描述】：
我有 server A “windows 7 Pro”，我在其中安装了 node.js 并使用此命令运行它 node ws_server.js following the instructions here
从运行 Apache 2.4/php 5.6.13 的 服务器 B“Windows Server 2008 R2”我想连接到 服务器 A 上的 ws_server。
在 **Server B* 上，我有一个名为 websocket.php 的脚本，代码如下
<script>
$(function() {
var WebSocketClient = require('websocket').client;
var client = new WebSocketClient();
client.on('connectFailed', function(error) {
console.log('Connect Error: ' + error.toString());
});
client.on('connect', function(connection) {
console.log('WebSocket Client Connected');
connection.on('error', function(error) {
console.log("Connection Error: " + error.toString());
});
connection.on('close', function() {
console.log('echo-protocol Connection Closed');
});
connection.on('message', function(message) {
if (message.type === 'utf8') {
console.log("Received: '" + message.utf8Data + "'");
}
});
function sendNumber() {
if (connection.connected) {
var number = Math.round(Math.random() * 0xFFFFFF);
connection.sendUTF(number.toString());
setTimeout(sendNumber, 1000);
}
}
sendNumber();
});
client.connect('ws://ServerA:8080/', 'echo-protocol');
});
</script>
但由于某种原因，我在控制台中收到此错误。
ReferenceError: 要求未定义
我是否需要从服务器 A 的 nodejs 文件夹中获取文件并将其包含在客户端脚本中？如果需要，我需要包含哪些文件？
注意：我也包含了 jQuery 文件
已编辑
这是我的客户代码
<script>
"use strict";
// Initialize everything when the window finishes loading
window.addEventListener("load", function(event) {
var status = document.getElementById("status");
var url = document.getElementById("url");
var open = document.getElementById("open");
var close = document.getElementById("close");
var send = document.getElementById("send");
var text = document.getElementById("text");
var message = document.getElementById("message");
var socket;
status.textContent = "Not Connected";
url.value = "ws://serverB:8080";
close.disabled = true;
send.disabled = true;
// Create a new connection when the Connect button is clicked
open.addEventListener("click", function(event) {
open.disabled = true;
socket = new WebSocket(url.value, "echo-protocol");
socket.addEventListener("open", function(event) {
close.disabled = false;
send.disabled = false;
status.textContent = "Connected";
});
// Display messages received from the server
socket.addEventListener("message", function(event) {
message.textContent = "Server Says: " + event.data;
});
// Display any errors that occur
socket.addEventListener("error", function(event) {
message.textContent = "Error: " + event;
});
socket.addEventListener("close", function(event) {
open.disabled = false;
status.textContent = "Not Connected";
});
});
// Close the connection when the Disconnect button is clicked
close.addEventListener("click", function(event) {
close.disabled = true;
send.disabled = true;
message.textContent = "";
socket.close();
});
// Send text to the server when the Send button is clicked
send.addEventListener("click", function(event) {
socket.send(text.value);
text.value = "";
});
});
</script>
【问题讨论】：
-
你为什么不简单地使用 socket.io ？
-
我不知道。根据我的阅读，我同时需要 node.js 和 socket.io
标签： javascript jquery node.js websocket