您的位置:

WebSocket教程详解

一、多对多聊天

WebSocket是一种支持双向通信的网络技术,它解决了HTTP协议的单向通信问题。在实际应用中,多对多聊天是WebSocket的一个常见应用场景。

以下是一个简单的多对多聊天的代码示例:

// 客户端代码

var socket = new WebSocket("ws://localhost:8080");

socket.onopen = function() {
  console.log("连接成功。");
}

socket.onmessage = function(event) {
  console.log("接收到消息:" + event.data);
}

document.getElementById("sendButton").addEventListener("click", function() {
  var messageInput = document.getElementById("messageInput");
  socket.send(messageInput.value);
  messageInput.value = "";
});

// 服务端代码

var WebSocketServer = require("ws").Server;
var wss = new WebSocketServer({ port: 8080 });

wss.on("connection", function(socket) {
  console.log("有新的客户端连接。");

  socket.on("message", function(message) {
    console.log("接收到消息:" + message);
    wss.clients.forEach(function(client) {
      client.send(message);
    });
  });
});

上面的代码中,客户端通过WebSocket连接服务端,当客户端发送消息时,服务端会将消息广播给所有连接的客户端。

二、Webservice教程

WebSocket与传统的HTTP通信有所不同。WebSocket是一种独立于HTTP协议的协议,它需要在WebSocket服务器上运行WebSocket协议的软件。在实际应用中,我们可以使用Webservice来实现WebSocket通信,Webservice是一个较为常见的软件。

以下是一个基于Webservice的简单WebSocket代码示例:

// 客户端代码

var socket = new WebSocket("ws://localhost:8080");

socket.onopen = function() {
  console.log("连接成功。");
}

socket.onmessage = function(event) {
  console.log("接收到消息:" + event.data);
}

document.getElementById("sendButton").addEventListener("click", function() {
  var messageInput = document.getElementById("messageInput");
  socket.send(messageInput.value);
  messageInput.value = "";
});

// 服务端代码

var WebSocketServer = require("ws").Server;
var http = require("http");
var express = require("express");
var app = express();
var server = http.createServer(app);
var wss = new WebSocketServer({ server });

app.use(express.static("public"));

wss.on("connection", function(socket) {
  console.log("有新的客户端连接。");

  socket.on("message", function(message) {
    console.log("接收到消息:" + message);
    wss.clients.forEach(function(client) {
      client.send(message);
    });
  });
});

server.listen(8080, function() {
  console.log("服务器已经启动。");
});

三、易语言WebSocket教程

易语言是一种编程语言,它可以很方便地与WebSocket通信进行集成。

以下是一个基于易语言的简单WebSocket代码示例:

' 客户端代码

Dim WebSocket As New WebSocket("ws://localhost:8080")

WebSocket.OnOpen = Sub()
  FeiQSend "连接成功。"
End Sub

WebSocket.OnMessage = Sub(Message As String)
  FeiQSend "接收到消息:" + Message
End Sub

Function FeiQSend(Message As String) As Integer
  ' 向飞鸽传书发送消息
End Function

Function SendButton_Click() As Integer
  Dim MessageInput As String
  MessageInput = GetDlgItemText(FORM1, IDC_EDIT1)
  WebSocket.Send MessageInput
  SetDlgItemText FORM1, IDC_EDIT1, ""
End Function

' 服务端代码

Dim WebSocketServer As New WebSocketServer(8080)

WebSocketServer.OnConnection = Sub(Socket As WebSocket)
  FeiQSend "有新的客户端连接。"
End Sub

WebSocketServer.OnMessage = Sub(Socket As WebSocket, Message As String)
  FeiQSend "接收到消息:" + Message
  WebSocketServer.SendAll Message
End Sub

Function FeiQSend(Message As String) As Integer
  ' 向飞鸽传书发送消息
End Function

四、宝塔WebSocket教程

宝塔是一种常见的服务器管理软件。在宝塔上部署WebSocket服务器非常简单。

以下是一个基于宝塔的简单WebSocket代码示例:

// 客户端代码

var socket = new WebSocket("ws://example.com:8080");

socket.onopen = function() {
  console.log("连接成功。");
}

socket.onmessage = function(event) {
  console.log("接收到消息:" + event.data);
}

document.getElementById("sendButton").addEventListener("click", function() {
  var messageInput = document.getElementById("messageInput");
  socket.send(messageInput.value);
  messageInput.value = "";
});

// 服务端代码

var WebSocketServer = require("ws").Server;
var wss = new WebSocketServer({ port: 8080 });

wss.on("connection", function(socket) {
  console.log("有新的客户端连接。");

  socket.on("message", function(message) {
    console.log("接收到消息:" + message);
    wss.clients.forEach(function(client) {
      client.send(message);
    });
  });
});

五、易语言编写WebSocket教程

易语言虽然不支持WebSocket,但我们可以通过编写一个WebSocket服务器的中间件,来实现在易语言中与WebSocket通信。

以下是一个基于中间件的简单WebSocket服务器代码示例:

' 客户端代码

Dim WebSocket As New WebSocket("ws://localhost:8080")

WebSocket.OnOpen = Sub()
  FeiQSend "连接成功。"
End Sub

WebSocket.OnMessage = Sub(Message As String)
  FeiQSend "接收到消息:" + Message
End Sub

Function FeiQSend(Message As String) As Integer
  ' 向飞鸽传书发送消息
End Function

Function SendButton_Click() As Integer
  Dim MessageInput As String
  MessageInput = GetDlgItemText(FORM1, IDC_EDIT1)
  WebSocket.Send MessageInput
  SetDlgItemText FORM1, IDC_EDIT1, ""
End Function

' 服务端代码

Redim Clients(0)

Listen 8080, "WebSocketMiddleware.dll", "WebSocketMiddleware"

Sub WebSocketMiddleware(ClientID As Integer, Message As String)
  If ClientID = -1 Then
    ' 新的客户端连接
    Clients(Ubound(Clients) + 1) = ClientID
    Exit Sub
  End If
  
  FeiQSend "接收到消息:" + Message
  
  For i = 1 to Ubound(Clients)
    If Clients(i) <> ClientID Then
      SendMessage Clients(i), Message
    End If
  Next
End Sub

Function FeiQSend(Message As String) As Integer
  ' 向飞鸽传书发送消息
End Function

六、WebSocket菜鸟教程

WebSocket有很多细节和注意点,初学者可以先参考菜鸟教程。

以下是一篇基础的WebSocket教程:

  
    <script>
      var socket = new WebSocket("ws://localhost:8080");

      socket.onopen = function() {
        console.log("连接成功。");
      }

      socket.onmessage = function(event) {
        console.log("接收到消息:" + event.data);
      }

      function sendMessage() {
        var messageInput = document.getElementById("messageInput");
        socket.send(messageInput.value);
        messageInput.value = "";
      }
    </script>
  
  
    <input id="messageInput">