扫一扫
分享文章到微信
扫一扫
关注官方公众号
至顶头条
作者:AustinLei 来源:天极网 2007年10月31日
关键字:
unit uServerMain; interface uses Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs, ScktComp, ToolWin, ComCtrls, ExtCtrls, StdCtrls, Buttons; const CMax=10; //客户端最大连接数 type client_record=record CHandle: integer; //客户端套接字句柄 CSocket:TCustomWinSocket; //客户端套接字 CName:string; //客户端计算机名称 CAddress:string; //客户端计算机IP地址 CUsed: boolean; //客户端联机标志 end; type TfrmServerMain = class(TForm) ServerSocket: TServerSocket; ControlBar1: TControlBar; ToolBar1: TToolBar; tbConnect: TToolButton; tbClose: TToolButton; tbDisconnected: TToolButton; Edit1: TEdit; Memo1: TMemo; StatusBar: TStatusBar; procedure tbConnectClick(Sender: TObject); procedure tbDisconnectedClick(Sender: TObject); procedure ServerSocketClientRead(Sender: TObject;Socket: TCustomWinSocket); procedure ServerSocketListen(Sender: TObject;Socket: TCustomWinSocket); procedure ServerSocketClientConnect(Sender: TObject;Socket: TCustomWinSocket); procedure ServerSocketClientDisconnect(Sender: TObject;Socket: TCustomWinSocket); procedure tbCloseClick(Sender: TObject); procedure FormCreate(Sender: TObject); procedure FormClose(Sender: TObject; var Action: TCloseAction); procedure ServerSocketGetSocket(Sender: TObject; Socket: Integer; var ClientSocket: TServerClientWinSocket); procedure ServerSocketClientError(Sender: TObject; Socket: TCustomWinSocket; ErrorEvent: TErrorEvent; var ErrorCode: Integer); private { Private declarations } public { Public declarations } session: array[0..CMax] of client_record; //客户端连接数组 Sessions: integer; //客户端连接数 end; var frmServerMain: TfrmServerMain; implementation {$R *.DFM} //打开套接字连接,并使套接字进入监听状态 procedure TfrmServerMain.tbConnectClick(Sender: TObject); begin ServerSocket.Open ; end; //关闭套接字连接,不再监听客户端的请求 procedure TfrmServerMain.tbDisconnectedClick(Sender: TObject); begin ServerSocket.Close; StatusBar.Panels[0].Text :='服务器套接字连接已经关闭,无法接受客户端的连接请求.'; end; //从客户端读取信息 procedure TfrmServerMain.ServerSocketClientRead(Sender: TObject;Socket: TCustomWinSocket); var i:integer; begin //将从客户端读取的信息添加到Memo1中 Memo1.Lines.Add(Socket.ReceiveText); for i:=0 to sessions do begin //取得匹配的客户端 if session[i].CHandle = Socket.SocketHandle then begin session[i].CSocket.SendText('回复客户端'+session[i].CAddress+' ==> '+Edit1.Text); end; end; end; //服务器端套接字进入监听状态,以便监听客户端的连接 procedure TfrmServerMain.ServerSocketListen(Sender: TObject;Socket: TCustomWinSocket); begin StatusBar.Panels[0].Text :='等待客户端连接...'; end; //当客户端连接到服务器端以后 procedure TfrmServerMain.ServerSocketClientConnect(Sender: TObject; Socket: TCustomWinSocket); var i,j:integer; begin j:=-1; for i:=0 to sessions do begin //在原有的客户端连接数组中有中断的客户端连接 if not session[i].CUsed then begin session[i].CHandle := Socket.SocketHandle ;//客户端套接字句柄 session[i].CSocket := Socket; //客户端套接字 session[i].CName := Socket.RemoteHost ; //客户端计算机名称 session[i].CAddress := Socket.RemoteAddress ;//客户端计算机IP session[i].CUsed := True; //连接数组当前位置已经占用 Break; end; j:=i; end; if j=sessions then begin inc(sessions); session[j].CHandle := Socket.SocketHandle ; session[j].CSocket := Socket; session[j].CName := Socket.RemoteHost ; session[j].CAddress := Socket.RemoteAddress ; session[j].CUsed := True; end; StatusBar.Panels[0].Text := '客户端 '+Socket.RemoteHost + ' 已经连接'; end; //当客户端断开连接时 procedure TfrmServerMain.ServerSocketClientDisconnect(Sender: TObject; Socket: TCustomWinSocket); var i:integer; begin for i:=0 to sessions do begin if session[i].CHandle =Socket.SocketHandle then begin session[i].CHandle :=0; session[i].CUsed := False; Break; end; end; StatusBar.Panels[0].Text :='客户端 '+Socket.RemoteHost + ' 已经断开'; end; //关闭窗口 procedure TfrmServerMain.tbCloseClick(Sender: TObject); begin Close; end; procedure TfrmServerMain.FormCreate(Sender: TObject); begin sessions := 0; end; procedure TfrmServerMain.FormClose(Sender: TObject;var Action: TCloseAction); begin ServerSocket.Close ; end; //当客户端正在与服务器端连接时 procedure TfrmServerMain.ServerSocketGetSocket(Sender: TObject; Socket: Integer; var ClientSocket: TServerClientWinSocket); begin StatusBar.Panels[0].Text :='客户端正在连接...'; end; //客户端发生错误 procedure TfrmServerMain.ServerSocketClientError(Sender: TObject; Socket: TCustomWinSocket; ErrorEvent: TErrorEvent; var ErrorCode: Integer); begin StatusBar.Panels[0].Text :='客户端'+Socket.RemoteHost +'发生错误!'; ErrorCode := 0; end; end. |
如果您非常迫切的想了解IT领域最新产品与技术信息,那么订阅至顶网技术邮件将是您的最佳途径之一。
现场直击|2021世界人工智能大会
直击5G创新地带,就在2021MWC上海
5G已至 转型当时——服务提供商如何把握转型的绝佳时机
寻找自己的Flag
华为开发者大会2020(Cloud)- 科技行者