clientsocket:array[1..50] of tcustomwinsocket; clientuser:array[1..50] of string;
clientsocket:array[1..50] of tcustomwinsocket; clientuser:array[1..50] of string;一个存客户端,一个存名字
我现在是这样作的:不过觉得订烦 type TClientRecord=Record crHandle:THandle; //客户句柄 crSocket:TCustomWinSocket; //客户socket crComputer:string; //客户计算机名 crIp:string; //客户IP crUsed:boolean; //此用户是否在线 crSendData:array of string; //发送数据 crDataCount:integer; // crCount:integer; crUserID:string; //用户ID crRights:string; //用户权限 end;type TSess=class(TObject) private MaxCount:integer; //最大客户数量 public LinkedCount:integer; //在线客户数量 Count:integer; //曾经最大在线数量即最大的索引号 Clients:array [0..MaxClient-1] of TClientRecord; //客户记录 constructor create; function AddClient(Socket:TCustomWinSocket):boolean; procedure UpdateClient(index:integer;Socket:TCustomWinsocket); procedure DelClient(index:integer); function FindClient(var index:integer;crHandle:THandle):boolean; function FindUnUsed(var Index:Integer):Boolean; end;
TIdTCPServer creates a secondary listening thread that is independent from the main thread of the program. The listener thread listens for incoming requests from clients. For each client that it answers, it creates a new thread to specifically service that individual client connection. The appropriate events are then fired within the context of that thread.
clientuser:array[1..50] of string;
clientuser:array[1..50] of string;一个存客户端,一个存名字
type
TClientRecord=Record
crHandle:THandle; //客户句柄
crSocket:TCustomWinSocket; //客户socket
crComputer:string; //客户计算机名
crIp:string; //客户IP
crUsed:boolean; //此用户是否在线
crSendData:array of string; //发送数据
crDataCount:integer; //
crCount:integer;
crUserID:string; //用户ID
crRights:string; //用户权限
end;type
TSess=class(TObject)
private
MaxCount:integer; //最大客户数量
public
LinkedCount:integer; //在线客户数量
Count:integer; //曾经最大在线数量即最大的索引号
Clients:array [0..MaxClient-1] of TClientRecord; //客户记录
constructor create;
function AddClient(Socket:TCustomWinSocket):boolean;
procedure UpdateClient(index:integer;Socket:TCustomWinsocket);
procedure DelClient(index:integer);
function FindClient(var index:integer;crHandle:THandle):boolean;
function FindUnUsed(var Index:Integer):Boolean;
end;
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;
利用这个记录类型数据保存客户端的信息,同时保存当前客户端的连接状态。其中,CHandle保存客户端套接字句柄,以便准确定位每个与服务器端保持连接的客户端;Csocket保存客户端套接字,通过它可以对客户端进行回复。Cused记录当前客户端是否与服务器端保持连接。
下面对组件ServerSocket和ClientSocket的属性设置简单说明。
ServerSocket的属性:
· Port,是通信的端口,必须设置。在本例中设置为1025;
· ServerTypt,服务器端读写信息类型,设置为stNonBlocking表示异步读写信息,本例中采用这种方式。
· ThreadCacheSize,客户端的最大连接数,就是服务器端最多允许多少客户端同时连接。本例采用默认值10。
其它属性采用默认设置即可。
ClientSocket的属性:
· Port,是通信的端口,必须与服务器端的设置相同。在本例中设置为1025;
· ClientType,客户端读写信息类型,应该与服务器端的设置相同,为stNonBlocking表示异步读写信息。
· Host,客户端要连接的服务器的IP地址。必须设置,当然也可以在代码中动态设置。
其它属性采用默认设置即可。
程序源代码:
· 服务器端源码(uServerMain.pas):
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.
unit uClientMain;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
ScktComp, ComCtrls, ToolWin, ExtCtrls, StdCtrls, Buttons;
const
SocketHost = '172.16.1.6'; //服务器端地址
type
TfrmClientMain = class(TForm)
ControlBar1: TControlBar;
ToolBar1: TToolBar;
tbConnected: TToolButton;
tbSend: TToolButton;
tbClose: TToolButton;
tbDisconnected: TToolButton;
ClientSocket: TClientSocket;
Edit1: TEdit;
Memo1: TMemo;
StatusBar: TStatusBar;
btnSend: TBitBtn;
procedure tbConnectedClick(Sender: TObject);
procedure tbDisconnectedClick(Sender: TObject);
procedure ClientSocketRead(Sender: TObject; Socket: TCustomWinSocket);
procedure tbSendClick(Sender: TObject);
procedure tbCloseClick(Sender: TObject);
procedure FormShow(Sender: TObject);
procedure ClientSocketConnect(Sender: TObject;
Socket: TCustomWinSocket);
procedure ClientSocketConnecting(Sender: TObject;
Socket: TCustomWinSocket);
procedure ClientSocketDisconnect(Sender: TObject;
Socket: TCustomWinSocket);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure ClientSocketError(Sender: TObject; Socket: TCustomWinSocket;
ErrorEvent: TErrorEvent; var ErrorCode: Integer);
private
{ Private declarations }
public
{ Public declarations }
end;
var
frmClientMain: TfrmClientMain;
implementation
{$R *.DFM}
//打开套接字连接
procedure TfrmClientMain.tbConnectedClick(Sender: TObject);
begin
ClientSocket.Open ;
end;
//关闭套接字连接
procedure TfrmClientMain.tbDisconnectedClick(Sender: TObject);
begin
ClientSocket.Close;
end;
//接受服务器端的回复
procedure TfrmClientMain.ClientSocketRead(Sender: TObject;
Socket: TCustomWinSocket);
begin
Memo1.Lines.Add(Socket.ReceiveText);
end;
//发送信息到服务器端
procedure TfrmClientMain.tbSendClick(Sender: TObject);
begin
ClientSocket.Socket.SendText(Edit1.Text);
end;
procedure TfrmClientMain.tbCloseClick(Sender: TObject);
begin
Close;
end;
//设置要连接的服务器端地址
procedure TfrmClientMain.FormShow(Sender: TObject);
begin
ClientSocket.Host := SocketHost;
end;
//已经连接到服务器端
procedure TfrmClientMain.ClientSocketConnect(Sender: TObject;
Socket: TCustomWinSocket);
begin
tbSend.Enabled := True;
tbDisconnected.Enabled :=True;
btnSend.Enabled := True;
StatusBar.Panels[0].Text := '已经连接到 '+ Socket.RemoteHost ;
end;
//正在连接到服务器端
procedure TfrmClientMain.ClientSocketConnecting(Sender: TObject;
Socket: TCustomWinSocket);
begin
StatusBar.Panels[0].Text := '正在连接到服务器... ' ;
end;
//当断开与服务器端的连接时发生
procedure TfrmClientMain.ClientSocketDisconnect(Sender: TObject;
Socket: TCustomWinSocket);
begin
tbSend.Enabled := False;
btnSend.Enabled := False;
tbDisconnected.Enabled := False;
StatusBar.Panels[0].Text := '已经断开与 '+ Socket.RemoteHost +' 的连接';
end;
procedure TfrmClientMain.FormClose(Sender: TObject;
var Action: TCloseAction);
begin
ClientSocket.Close ;
end;
//当与服务器端的连接发生错误时
procedure TfrmClientMain.ClientSocketError(Sender: TObject;
Socket: TCustomWinSocket; ErrorEvent: TErrorEvent;
var ErrorCode: Integer);
begin
StatusBar.Panels[0].Text := '与服务器端的连接发生错误';
ErrorCode := 0;
end;
end.
小结
上述方法是比较简单的实现方法,同时也是相对较容易理解的方法。通过这个方法,笔者成功实现了局域网内多个客户端与服务器端进行Socket通信的功能,同时可以保证一个客户端的连接、通信或是断开都不影响其它客户端的正常通信。
完全可以完成你的要求
它的Athread估计比自己写的稳定点
TSimpleClient = class(TObject)(保存一个用户信息)
FCHandle: integer;
FListLink: Integer;
FCSocket:TCustomWinSocket;
FCAddress:string;
FCUsed: boolean;
end
Clients: TList;(在将TSimpleClient加到Clients,存储了所有用户信息)