在Silverlight中使用Socket进行通信(1)Socket请求-回复方式的简易数据交换

很久之前用过Socket，由于近期项目需要用socket传输视频流，早上花了半小时回顾了一下。

Socket类简要介绍

socket下提供的主要类有四个，分别是socket,tcpclient,tcplistener,udpclient，他们的作用如下：

Socket 含有大量方法用于网络连接，.net中的一些高级类如webrequest,tcpclient等均调用此类来进行操作
TcpClient 提供客户端连接，用于创建和使用tcp网络服务
TcpListener 用于从tcp网络客户端侦听连接
UdpClient 为udp客户端创建连接，是tcp的备用协议，在本地网络使用

Demo测试

这个Demo含有两个project，一个是server,一个是client,为了简洁，均采用控制台程序

服务端：

代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Net.Sockets;

namespace SocketServer
{
    class Program
    {
        public static TcpListener tcpListener;
        private static NetworkStream networkStream;
        private static StreamReader streamReader;
        private static StreamWriter streamWriter;
        public static Socket socketForClient;

static void Main(string[] args)
        {
            try
            {
                tcpListener = new TcpListener(1234);
                tcpListener.Start();
                Console.WriteLine("服务启动，开始监控1234端口");

socketForClient = tcpListener.AcceptSocket();
                networkStream = new NetworkStream(socketForClient);
                streamWriter = new StreamWriter(networkStream);
                streamReader = new StreamReader(networkStream);
                try
                {
                    if (socketForClient.Connected)
                    {
                        Console.WriteLine("客户端已连接");
                        string strInput = streamReader.ReadLine();
                        Console.WriteLine("从客户端传入的字符串是：" + strInput);
                        string strOutput = strInput.ToUpper();
                        streamWriter.Write(strOutput);
                        Console.WriteLine("转换后字符串是" + strOutput);
                        streamWriter.Flush();
                    }
                }
                catch (Exception ex)
                {
                    Console.WriteLine("出现异常：" + ex.Message);
                }
            }
            catch(Exception ex)
            {
                Console.WriteLine("发生异常，关闭连接");
                tcpListener.Stop();
                streamWriter.Close();
                streamReader.Close();
                networkStream.Close();
            }
        }
    }
}

客户端：

代码

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Net.Sockets;

namespace SocketClient
{
    class Program
    {
        public static TcpClient myclient;
        private static NetworkStream networkStream;
        private static StreamReader streamReader;
        private static StreamWriter streamWriter;

static void Main(string[] args)
        {
            try
            {
                try
                {
                    myclient = new TcpClient("localhost", 1234);
                    Console.WriteLine("已经连接到localhost的1234端口");
                }
                catch (Exception ex)
                {
                    Console.WriteLine("未能在1234端口连接上服务器");
                }
                networkStream = myclient.GetStream();
                streamReader = new StreamReader(networkStream);
                streamWriter = new StreamWriter(networkStream);
                Console.WriteLine("请输入一串小写字母：");
                string strInput = Console.ReadLine();
                streamWriter.Write(strInput);
                Console.WriteLine("正在发送消息");
                streamWriter.Flush();
                string strServerComes = streamReader.ReadLine();
                Console.WriteLine("正在从服务端收取消息");
                Console.WriteLine("从服务端收到的消息是：" + strServerComes);
            }
            catch(Exception ex)
            {
                Console.WriteLine("发生异常，关闭连接");
                streamReader.Close();
                streamWriter.Close();
                networkStream.Close();
            }
        }
    }
}

在windows 7 中需要安全设置，否则socket将无法正常访问端口。

接下来将会做socket与silverlight传输文本及视频流的尝试。

转载于:https://www.cnblogs.com/wengyuli/archive/2010/07/01/soket-review.html