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c# TCP Socket通讯基础
在做网络通讯方面的程序时，必不可少的是Socket通讯。
那么我们需要有一套既定的，简易的通讯流程。
如下：
<script type="text/javascript">// </script><script type="text/javascript" src="http://pagead2.googlesyndication.com/pagead/show_ads.js">// </script><pre name="code" class="csharp">public class PublicSocket { public const string DOWNLOAD_STATUS_WAIT = "1"; public const string DOWNLOAD_STATUS_PAUSE = "2"; public const string DOWNLOAD_STATUS_DOWNLOADING = "3"; public const string DOWNLOAD_STATUS_DOWNLOADED = "4"; public const string DOWNLOAD_STATUS_ERROR = "5"; //private XmlHelper xmlhelper = new XmlHelper(); private TcpClient tcpMethod = new TcpClient(); public static string LoginUserName = ""; public static Socket HeadClient = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp); private static string iAddress = "192.168.1.1"; private static int iPort = 7888; private static IPEndPoint endpoint = new IPEndPoint(IPAddress.Parse(iAddress), iPort); public const int LOGIN_NAMEERROR = 100000; public const int LOGIN_CODEERROR = 100001; public const int LOGIN_ERROR = 100002; public const int LOGIN_OK = 100003; public static bool AllowUpdate = true; public static void SocketConnect() { try { if (!HeadClient.Connected) { HeadClient.Connect(endpoint); } } catch (Exception ex) { } } public static void SocketClose() { if (HeadClient.Connected) { HeadClient.Close(); } }public static void ThreadGetSingleDownloadedFile(object data) //object参数可以实现界面传入数据进行使用 { string retMD5 = string.Empty; try { HanleListItemClass formInter = data as HanleListItemClass; XmlDocument aa = XmlHelper.BuildXmlDoc("CMD", "1", "1", new List<HollXmlNode> { new HollXmlNode("ID","2",null), new HollXmlNode("STATE","127",null) }); //主要为了构建XML文件进行Socket的send操作 //构造后如下 <?xml version=‘1.0‘ encoding=‘utf-8‘?><CMD code=‘1‘ index=‘1‘> // <ID>2</ID> // <STATE>127</STATE></CMD> byte[] sendaskbyte = Encoding.UTF8.GetBytes(aa.InnerXml.ToString()); int sendcount = 0; try { sendcount = HeadClient.Send(sendaskbyte, sendaskbyte.Length, 0); } catch (Exception ex) { // return LOGIN_ERROR; } if (sendcount == 0) { //return LOGIN_ERROR; } int ret = SingleDownloadedFileWaitBack(formInter); } catch { //return LOGIN_ERROR; } } public static int SingleDownloadedFileWaitBack(HanleListItemClass tItemclass) { byte[] RetData = http://www.mamicode.com/new byte[36 * 1024]; Array.Clear(RetData, 0, RetData.Length); int datalen = 0; try { datalen = HeadClient.Receive(RetData); if (datalen == 0) { return -1; } //接收到服务器返回的信息 string tcpdatastring = Encoding.UTF8.GetString(RetData).Replace("\0", " "); ; //此处可以根据自己需求处理返回的信息 http://www.cnblogs.com/sosoft/ return 0; } catch (Exception ex) { return 0; } } }
然后再界面调用的时候，我们只需要在事件中这么使用即可
private void button1_Click(object sender, EventArgs e) { PublicSocket.SocketConnect(); ThreadPool.QueueUserWorkItem(new WaitCallback(SocketMethod.ThreadGetTotalState), this); }
同时也把构建XML的类分享出来，使得编码更加简便
1 public class XmlHelper 2 { 3 private static string xmlinit = "<?xml version=‘1.0‘ encoding=‘utf-8‘?><{0} code=‘{1}‘ index=‘{2}‘></{0}>"; 4 5 public static XmlDocument BuildXmlDoc(string xmltype, string code, string index, List<HollXmlNode> xmlnodes) 6 { 7 XmlDocument root = new XmlDocument(); 8 root.LoadXml(string.Format(xmlinit, xmltype, code, index)); 9 10 if (xmlnodes != null)11 {12 for (int i = 0; i < xmlnodes.Count; i++)13 {14 XmlElement parentNode = root.CreateElement(xmlnodes[i].NodeName);15 16 XmlText descText = root.CreateTextNode(xmlnodes[i].NodeValue);17 parentNode.AppendChild(descText);18 19 20 if (xmlnodes[i].NodeAtt != null)21 {22 if (xmlnodes[i].NodeAtt.Count > 0)23 {24 for (int j = 0; j < xmlnodes[i].NodeAtt.Count; j++)25 {26 parentNode.SetAttribute(xmlnodes[i].NodeAtt[j].AttName, xmlnodes[i].NodeAtt[j].AttValue);27 }28 }29 }30 31 root.LastChild.AppendChild(parentNode);32 }33 }34 35 36 return root;37 }38 39 40 }
1 public class HollXmlNode 2 { 3 private string _nodename; 4 private string _nodevalue; 5 private List<HollXmlAttribute> _nodeatt; 6 7 8 public HollXmlNode(string tnodename, string tnodevalue, List<HollXmlAttribute> tnodeatt) 9 {10 _nodename = tnodename;11 _nodevalue =http://www.mamicode.com/ tnodevalue;12 _nodeatt = tnodeatt;13 }14 15 16 public string NodeName17 {18 get { return _nodename; }19 set { _nodename = value; }20 }21 22 23 24 25 public string NodeValue26 {27 get { return _nodevalue; }28 set { _nodevalue =http://www.mamicode.com/ value; }29 }30 31 32 public List<HollXmlAttribute> NodeAtt33 {34 get { return _nodeatt; }35 set { _nodeatt = value; }36 }37 }38 39 40 public class HollXmlAttribute41 {42 private string _attname;43 private string _attvalue;44 45 46 public HollXmlAttribute(string tname, string tvalue)47 {48 _attname = tname;49 _attvalue =http://www.mamicode.com/ tvalue;50 }51 52 53 public string AttName54 {55 get { return _attname; }56 set { _attname = value; }57 }58 59 60 public string AttValue61 {62 get { return _attvalue; }63 set { _attvalue =http://www.mamicode.com/ value; }64 }65 }
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