4. Internet Stream

Internet Stream

  • I

    Hallo
    ich würde gerne 2 kleine programme schreiben:
    -Das erste soll ein server sein
    -Das zweite soll dem Server ein String schicken

    Wie geht das? Also an eine bestimmte URL (mit dyndns.com), die an den server weitergeleitet wird.

    Danke schon mal

    0
  • A

    Hallo

    IchBinRegistriert schrieb:

    Hallo
    ich würde gerne 2 kleine programme schreiben:
    -Das erste soll ein server sein

    Z.B TServerSocket

    -Das zweite soll dem Server ein String schicken

    Z.B. TClientSocket

    Also an eine bestimmte URL (mit dyndns.com), die an den server weitergeleitet wird.

    😕

    bis bald
    akari

    0
  • I

    kannst du mir einen bseispielcode geben wie ich damit ein String verschicken (bzw. empfangen) kann?

    Bei google findet man nur für Java und da weiß ich wie es geht 😃

    0

  • Schau dir mal das Chat-Programm im Unterordner "BCB/Examples" an...

    0

  • Mich interessiere das auch aber ich hab nur den Ordner Demos, mit Beispielen.
    Aber nur lokales Ein Chat Prog hab ich nicht gefunden, oder im Programm-
    ordner ist auch nix "Example mäßiges". Bin zu blöd zum finden 😃 , oder hab es gar nicht 😕 .
    Gibts das noch irgendwo anders zu finden ?

    0

  • Ich habe noch den alten BCB 5, dort gibt es unter "Examples/Internet/Chat" ein Beispielprojekt für die Verwendung von Server- und ClientSocket.

    Wie das bei den anderen Versionen aussieht, weiß ich leider nicht (ansonsten such doch mal einfach nach dem Begriff "ServerSocket" im Ordner 'Demos).

    0
  • I

    kannst du mir vielleicht einen kurzen bsp code geben ich finde das programm nicht 😞

    0

  • Hier mal die beiden Dateien des Formulars (ohne DFM-Datei):
    1. Header

    //----------------------------------------------------------------------------
//Borland C++Builder
//Copyright (c) 1987, 1997 Borland International Inc. All Rights Reserved.
//----------------------------------------------------------------------------
//---------------------------------------------------------------------------
#ifndef mainH
#define mainH
//---------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <StdCtrls.hpp>
#include <Forms.hpp>
#include "ScktComp.hpp"
#include <Buttons.hpp>
#include <ComCtrls.hpp>
#include <ExtCtrls.hpp>
#include <Menus.hpp>
//---------------------------------------------------------------------------
class TChatForm : public TForm
{
__published:	// IDE-managed Components
        TBevel *Bevel1;
        TStatusBar *StatusBar1;
        TPanel *Panel1;
        TSpeedButton *SpeedButton1;
        TMemo *Memo1;
        TMemo *Memo2;
        TMainMenu *MainMenu1;
        TMenuItem *File1;
        TMenuItem *FileListenItem;
        TMenuItem *FileConnectItem;
        TMenuItem *Disconnect1;
        TMenuItem *N1;
        TMenuItem *Exit1;
        TServerSocket *ServerSocket;
        TClientSocket *ClientSocket;
        void __fastcall FileListenItemClick(TObject *Sender);
   void __fastcall FileConnectItemClick(TObject *Sender);
   void __fastcall Exit1Click(TObject *Sender);
   void __fastcall Memo1KeyDown(TObject *Sender, WORD &Key,
      TShiftState Shift);
   void __fastcall FormCreate(TObject *Sender);
   void __fastcall ClientSocketConnect(TObject *Sender,
      TCustomWinSocket *Socket);
   void __fastcall ClientSocketDisconnect(TObject *Sender,
      TCustomWinSocket *Socket);
   void __fastcall ClientSocketRead(TObject *Sender,
      TCustomWinSocket *Socket);
   void __fastcall ServerSocketClientRead(TObject *Sender,
      TCustomWinSocket *Socket);
   void __fastcall ServerSocketAccept(TObject *Sender,
      TCustomWinSocket *Socket);
   void __fastcall ServerSocketClientConnect(TObject *Sender,
      TCustomWinSocket *Socket);
   void __fastcall Disconnect1Click(TObject *Sender);
   void __fastcall ClientSocketError(TObject *Sender,
      TCustomWinSocket *Socket, TErrorEvent ErrorEvent, int &ErrorCode);
   void __fastcall ServerSocketClientDisconnect(TObject *Sender,
      TCustomWinSocket *Socket);
private:	// User declarations
public:		// User declarations
        bool IsServer;
        String Server;
        __fastcall TChatForm(TComponent* Owner);
};

//---------------------------------------------------------------------------
extern TChatForm *ChatForm;
//---------------------------------------------------------------------------
#endif

    2. Source

    //----------------------------------------------------------------------------
//Borland C++Builder
//Copyright (c) 1987, 1997 Borland International Inc. All Rights Reserved.
//----------------------------------------------------------------------------
//---------------------------------------------------------------------------
#include <vcl.h>
#pragma hdrstop

#include "main.h"
//---------------------------------------------------------------------------
#pragma link "ScktComp"
#pragma resource "*.dfm"
TChatForm *ChatForm;
//---------------------------------------------------------------------------
__fastcall TChatForm::TChatForm(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------

void __fastcall TChatForm::FileListenItemClick(TObject *Sender)
{
  FileListenItem->Checked = !FileListenItem->Checked;
  if (FileListenItem->Checked)
  {
     ClientSocket->Active = false;
     ServerSocket->Active = true;
     StatusBar1->Panels->Items[0]->Text = "Listening...";
  }else
  {
     if (ServerSocket->Active)
     { 
        ServerSocket->Active = false;
     }
     StatusBar1->Panels->Items[0]->Text = "";    
  }          
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
void __fastcall TChatForm::FileConnectItemClick(TObject *Sender)
{
  if (ClientSocket->Active)
  { 
    ClientSocket->Active = false;
  }   
  if (InputQuery("Computer to connect to", "Address Name:", Server))
  {
     if (Server.Length() > 0)
     {
        ClientSocket->Host = Server;
        ClientSocket->Active = true;
        FileListenItem->Checked = false;  
     }
  }
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
void __fastcall TChatForm::Exit1Click(TObject *Sender)
{
  ServerSocket->Close();
  ClientSocket->Close();
  Close();   
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
void __fastcall TChatForm::Memo1KeyDown(TObject *Sender, WORD &Key,
      TShiftState Shift)
{
  if (Key == VK_RETURN)
  {
     if (IsServer){ServerSocket->Socket->Connections[0]->SendText(
         Memo1->Lines->Strings[Memo1->Lines->Count - 1]); }
     else
     { ClientSocket->Socket->SendText(Memo1->Lines->Strings[
        Memo1->Lines->Count -1]);}
  }   
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
void __fastcall TChatForm::FormCreate(TObject *Sender)
{
  FileListenItemClick(NULL);   
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
void __fastcall TChatForm::ClientSocketConnect(TObject *Sender,
      TCustomWinSocket *Socket)
{
  StatusBar1->Panels->Items[0]->Text = "Connect to: " + Socket->RemoteHost;   
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
void __fastcall TChatForm::Disconnect1Click(TObject *Sender)
{
  ClientSocket->Active = false;
  ServerSocket->Active = true;
  StatusBar1->Panels->Items[0]->Text = "Listening...";
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
void __fastcall TChatForm::ClientSocketRead(TObject *Sender,
      TCustomWinSocket *Socket)
{
  Memo2->Lines->Add(Socket->ReceiveText());  
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
void __fastcall TChatForm::ServerSocketClientRead(TObject *Sender,
      TCustomWinSocket *Socket)
{
  Memo2->Lines->Add(Socket->ReceiveText());  
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
void __fastcall TChatForm::ServerSocketAccept(TObject *Sender,
      TCustomWinSocket *Socket)
{
  IsServer = true;
  StatusBar1->Panels->Items[0]->Text = "Connect to: " + Socket->RemoteAddress;   
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
void __fastcall TChatForm::ServerSocketClientConnect(TObject *Sender,
      TCustomWinSocket *Socket)
{
  Memo2->Lines->Clear();   
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
void __fastcall TChatForm::ClientSocketDisconnect(TObject *Sender,
      TCustomWinSocket *Socket)
{
  FileListenItemClick(NULL);   
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
void __fastcall TChatForm::ClientSocketError(TObject *Sender,
      TCustomWinSocket *Socket, TErrorEvent ErrorEvent, int &ErrorCode)
{
  Memo2->Lines->Add("Error connecting to:" + Server);   
  ErrorCode = 0;
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
void __fastcall TChatForm::ServerSocketClientDisconnect(TObject *Sender,
      TCustomWinSocket *Socket)
{
  StatusBar1->Panels->Items[0]->Text = "Listening...";
}
//---------------------------------------------------------------------------
//---------------------------------------------------------------------------
    0
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