我目前正在使用delphi 6(是的,我知道..但它到目前为止已完成工作。)
我正在使用Serversocket和客户端套接字。当我的客户端连接到我的服务器时,我想让它发送一些信息,如computername,lAN IP,操作系统名称,ping。
目前我只有客户端将计算机名称发送到服务器,我想知道如何发送多个信息,并在我的网格中进行相应的设置?这是源代码:
客户端:
unit client1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ScktComp;
type
TForm1 = class(TForm)
Client1: TClientSocket;
procedure FormCreate(Sender: TObject);
procedure FormClose(Sender: TObject; var Action: TCloseAction);
procedure Client1Connect(Sender: TObject; Socket: TCustomWinSocket);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
function Getusernamefromwindows: string;
var
iLen: Cardinal;
begin
iLen := 256;
Result := StringOfChar(#0, iLen);
GetUserName(PChar(Result), iLen);
SetLength(Result, iLen);
end;
function Getcomputernamefromwindows: string;
var
iLen: Cardinal;
begin
iLen := MAX_COMPUTERNAME_LENGTH + 1;
Result := StringOfChar(#0, iLen);
GetComputerName(PChar(Result), iLen);
SetLength(Result, iLen);
end;
function osver: string;
begin
result := 'Unknown';
case Win32MajorVersion of
4:
case Win32MinorVersion of
0: result := 'windows 95';
10: result := 'Windows 98';
90: result := 'Windows ME';
end;
5:
case Win32MinorVersion of
0: result := 'windows 2000';
1: result := 'Windows XP';
end;
6:
case Win32MinorVersion of
0: result := 'Windows Vista';
1: result := 'Windows 7';
end;
end;
end;
procedure TForm1.FormCreate(Sender: TObject);
begin
Client1.Host := '192.168.1.106';
Client1.Active := true;
end;
procedure TForm1.FormClose(Sender: TObject; var Action: TCloseAction);
begin
Client1.Active := false;
end;
procedure TForm1.Client1Connect(Sender: TObject; Socket: TCustomWinSocket);
begin
Client1.Socket.SendText(Getcomputernamefromwindows + '/' + Getusernamefromwindows);
(*Upon connection to server, I would like it send the os name, but as you
can see I already have SendText being used*)
end;
end.
服务器:
unit server1;
interface
uses
Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
Dialogs, ComCtrls, ScktComp, Grids, DBGrids;
type
TForm1 = class(TForm)
Server1: TServerSocket;
PageControl1: TPageControl;
TabSheet1: TTabSheet;
TabSheet2: TTabSheet;
TabSheet3: TTabSheet;
TabSheet4: TTabSheet;
StringGrid1: TStringGrid;
procedure FormCreate(Sender: TObject);
procedure Server1ClientConnect(Sender: TObject;
Socket: TCustomWinSocket);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.dfm}
procedure TForm1.FormCreate(Sender: TObject);
begin
With StringGrid1 do begin
Cells[0,0] := 'Username';
Cells[1,0] := 'IP Address';
Cells[2,0] := 'Operating System';
Cells[3,0] := 'Ping';
end;
end;
(* cells [0,0][1,0][2,0][3,0]
are not to be changed for
these are used to put the
titles in
*)
procedure TForm1.Server1ClientConnect(Sender: TObject;
Socket: TCustomWinSocket);
var
begin
with StringGrid1 do begin
Cells[0,1] := Socket.ReceiveText;
Cells[1,1] := Server1.Socket.Connections[0].RemoteAddress;
(*in this area I want it to receive the os version info and place it in
Cells[2,1]*)
end;
end;
end.
答案 0 :(得分:7)
你已经知道了答案,因为你已经在做了。发送带有分隔符的各种字符串(在您的示例中,您使用的是/
,但您也可以使用CRLF,字符串长度前缀等),然后使用一些最终分隔符来表示数据的结尾。
您的代码存在的真正问题是使用SendText()
和ReceiveText()
。 SendText()
无法保证一次性发送整个字符串。它返回实际发送的字节数。如果少于字符串长度,则必须再次调用SendText()
以发送剩余字节。对于ReceiveText()
,它只返回当时套接字上的任意数据,这可能是一个不完整的字符串,或者多个字符串合并在一起。
您正在使用较低级别的I / O方法,而无需先设计更高级别的协议来描述正在发送的数据。你需要一个协议。设计您希望数据的外观,然后按照这种方式格式化数据并使用方法发送/接收数据,然后在收到数据时根据需要拆分数据。
因此,在这种情况下,您可以发送一个包含/
- 分隔值的CRLF分隔字符串。然后服务器将读取,直到它到达CRLF,然后拆分该行并使用相应的值。