我已经购买了WebSocket模块并将其安装在WAMP环境中。我也有一个PHP脚本,可以在正确的位置生成IPC文件,并永远循环以监听事件。但是,使用此客户端代码:
var websocket = null;
var connect = function() {
var button = document.getElementById('connect-button');
// This function is a convenience function, to set the content
// of the response display
var setResponse = function(text) {
var element = document.getElementById('response');
element.innerHTML = text;
}
// A message telling the user we started connecting is always
// useful
button.innerHTML = 'Connecting ...';
// The file name `demo.ws' could in principle help in having multiple
// websockets at a single domain name.
//
// It's not implemented right now, but it can be if it's needed and
// it's not too hard.
//var url = "ws://websocket-example/websocket-example/websocket-example-websocket.rp";
var url = 'ws://' + window.location.hostname + '/WebSocket/websocket-example-websocket.rp';
// Create the websocket connection now
websocket = new WebSocket(url, 'standard');
// Install the handlers, the On Open handler is triggered
// immediately after the conection has been established
// and a successful handshake
websocket.onopen = function(event) {
// Update the connection status indicator
var element = document.getElementById('connection-status');
var input = document.getElementById('input');
element.innerHTML = 'Connected Now';
element.setAttribute('class', 'online');
// Update the button, and install a new handler to allow
// closing the websocket connection
button.innerHTML = 'Close';
button.onclick = function() {
websocket.close();
}
input.focus();
input.value = '';
}
// On close and on error handler, this is a simple demo
// hence the simplistic approach. Ideally this should be
// two separate functions
websocket.onclose =
websocket.onerror = function(event) {
// Update the connection status indicator
var element = document.getElementById('connection-status');
var input = document.getElementById('input');
element.innerHTML = 'Offline';
element.setAttribute('class', 'offline');
// Update button click handler, to reconnect if requested
button.innerHTML = 'Connect';
button.onclick = connect;
input.value = '';
// Clear the response text
setResponse('');
// Reset the websocket global variable
websocket = null;
}
// On message handler, triggered when a message is received
websocket.onmessage = function(event) {
// Set the response text
setResponse(event.data);
}
}
var send = function(message) {
// Send a message to the server but check that the websocket
// was connected first
if (websocket === null)
return;
// It's ok so, send the message now
websocket.send(message);
}
触发连接后,我的请求失败,并出现以下错误:
并且
websocket
仍然是null
。我绝对不理解此错误,因为200似乎是可以的状态,但是我的请求仍然失败。 IPC文件是在服务器启动后生成的,位于正确的位置,并且执行脚本的用户具有请求该文件的必要特权。此行为的原因是什么,我该如何解决? 最佳答案
在WebSocket连接上,您需要101 Switching Protocols
状态响应。
获得200
状态响应,可能意味着该请求未到达您的WebSocket处理程序。
我还将研究开发工具,并检查响应是否具有任何WebSocket握手 header 。
如果有的话,我认为这是模块的问题。否则,可能是您的配置。