很久之前用過Socket，由于近期項目需要用socket傳輸視頻流，早上花了半小時回顧了一下。

Socket類簡要介紹

socket下提供的主要類有四個，分別是socket,tcpclient,tcplistener,udpclient，他們的作用如下：

Socket 含有大量方法用于網絡連接，.net中的一些高級類如webrequest,tcpclient等均調用此類來進行操作

TcpClient? 提供客戶端連接，用于創建和使用tcp網絡服務

TcpListener? 用于從tcp網絡客戶端偵聽連接

UdpClient? 為udp客戶端創建連接，是tcp的備用協議，在本地網絡使用

?Demo測試

這個Demo含有兩個project，一個是server,一個是client,為了簡潔，均采用控制臺程序

服務端：

?

代碼 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("服務啟動，開始監控1234端口");?

????????????????socketForClient?=?tcpListener.AcceptSocket();?
????????????????networkStream?=?new?NetworkStream(socketForClient);?
????????????????streamWriter?=?new?StreamWriter(networkStream);?
????????????????streamReader?=?new?StreamReader(networkStream);?
????????????????try?
????????????????{?
????????????????????if?(socketForClient.Connected)?
????????????????????{?
????????????????????????Console.WriteLine("客戶端已連接");?
????????????????????????string?strInput?=?streamReader.ReadLine();?
????????????????????????Console.WriteLine("從客戶端傳入的字符串是："?+?strInput);?
????????????????????????string?strOutput?=?strInput.ToUpper();?
????????????????????????streamWriter.Write(strOutput);?
????????????????????????Console.WriteLine("轉換后字符串是"?+?strOutput);?
????????????????????????streamWriter.Flush();?
????????????????????}?
????????????????}?
????????????????catch?(Exception?ex)?
????????????????{?
????????????????????Console.WriteLine("出現異常："?+?ex.Message);?
????????????????}?
????????????}?
????????????catch(Exception?ex)?
????????????{?
????????????????Console.WriteLine("發生異常，關閉連接");?
????????????????tcpListener.Stop();?
????????????????streamWriter.Close();?
????????????????streamReader.Close();?
????????????????networkStream.Close();?
????????????}?
????????}?
????}?
}

?

客戶端：

?

代碼 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("已經連接到localhost的1234端口");?
????????????????}?
????????????????catch?(Exception?ex)?
????????????????{?
????????????????????Console.WriteLine("未能在1234端口連接上服務器");?
????????????????}?
????????????????networkStream?=?myclient.GetStream();?
????????????????streamReader?=?new?StreamReader(networkStream);?
????????????????streamWriter?=?new?StreamWriter(networkStream);?
????????????????Console.WriteLine("請輸入一串小寫字母：");?
????????????????string?strInput?=?Console.ReadLine();?
????????????????streamWriter.Write(strInput);?
????????????????Console.WriteLine("正在發送消息");?
????????????????streamWriter.Flush();?
????????????????string?strServerComes?=?streamReader.ReadLine();?
????????????????Console.WriteLine("正在從服務端收取消息");?
????????????????Console.WriteLine("從服務端收到的消息是："?+?strServerComes);?
????????????}?
????????????catch(Exception?ex)?
????????????{?
????????????????Console.WriteLine("發生異常，關閉連接");?
????????????????streamReader.Close();?
????????????????streamWriter.Close();?
????????????????networkStream.Close();?
????????????}?
????????}?
????}?
}

?

?

?

在windows 7 中需要安全設置，否則socket將無法正常訪問端口。

接下來將會做socket與silverlight傳輸文本及視頻流的嘗試。

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

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