/////////////////////////////////////////////////////////////////////
//  sockFiles.cpp - demonstrate sending files over sockets         //
//                  connection                                     //
//  ver 1.0                                                        //
//  Language:       Visual C++, ver 6.0, SP 5                      //
//  Platform:       Dell Dimension 8100, Win 2000 Pro, SP 2        //
//  Application:    CSE691/791 - SWM&A Demonstration               //
//  Author:         Jim Fawcett, CST 2-187, Syracuse Univ          //
//                  (315) 443-3948, jfawcett@twcny.rr.com          //
/////////////////////////////////////////////////////////////////////

/////////////////////////////////////////////////////////////////////
//  Build Process                                                  //
/////////////////////////////////////////////////////////////////////
//  Required Files:                                                //
//    sockFiles.cpp, socks.h, socks.cpp, sysUtils.h, sysUtils.cpp  //
//                                                                 //
//  Compiler:                                                      //
//    - create a console project sockFile                          //
//    - add files the files listed above
//    - Project Settings\debug\Program Arguments\ filename         //
//    - Project Settings\C/C++\category=code generation            //
//                      \Use run-time library\Debug Multithreaded  //
//    - Project Settings\Link\Object/library modules:              //
//        add wsock32.lib to end of list with preceding space      //
//    - start the socket server created with socks test stub       //
//    - compile, link, and run or:                                 //
//      msdev sockFiles.dsp /make /rebuild                         //
//      debug\sockFiles sockFiles.cpp                              //
//                                                                 //
/////////////////////////////////////////////////////////////////////
/*
    Maintenance History
    ===================
    ver 1.0 : 23 Oct 2001
      - first release

*/

#include "socks.h"      // #include <winsock2.h> from socks.h must
#include <windows.h>    // come before #include <windows.h> -- sigh
#include <cstring>
#include <iostream>
#include "sysUtils.h"
using namespace std;

#define BLOCKSIZE 256

int main(int argc, char *argv[]) {

  cout << "\n  Demonstrating sending files over socket connection "
       << "\n ====================================================\n\n";

  if(argc == 1) {
    cout << "\n  please enter name of file to open on command line\n\n";
    return 1;
  }
  char *fileName = argv[1];
  
//

  // attempt to open file named in first argument of the command line

  HANDLE fileHandle = 
    CreateFile(
      fileName,
      GENERIC_READ,
      FILE_SHARE_READ,
      NULL,
      OPEN_EXISTING,
      FILE_FLAG_SEQUENTIAL_SCAN,
      NULL
    );

  sysError err;
  if(fileHandle == INVALID_HANDLE_VALUE) {
    cout << "\n  " << err.getLastMsg() << endl;
    return 1;
  }
  
  // open connection to server socket

  sockClt toServer;
  if(!toServer.connectTo("127.0.0.1")) {
    cout << "\n  can't open socket connection\n\n";
    return 1;
  }

  // read file in fixed size blocks and write to socket

  unsigned long int numRead;
  const int bufferSize = BLOCKSIZE;
  char buffer[bufferSize];
  BOOL readOK = TRUE;
  while(1) {
    readOK = ReadFile(fileHandle,buffer,bufferSize,&numRead,NULL);
    if(readOK && numRead > 0) {
      buffer[numRead] = '\0';
      cout << "\n  sending " << numRead << " bytes";
      toServer << buffer;
    }
    else
      break;
  }
  CloseHandle(fileHandle);

  cout << "\n\n";
  return 0;
}