sockets problem programming

Hello!

I am trying to establish a connection between two programs via sockets on the same computer.

I have two files (and two Visual C++ 6.0 running). The connection is established, bytes are sent, but they are not received.

Help me please. What should I change!


First file:

Code:

---

#include <stdio.h>
#include "winsock2.h"

SOCKET ListenSocket;
SOCKADDR_IN service;
SOCKET AcceptSocket;

SOCKET ConnectSocket;
SOCKADDR_IN clientService;


//----------------------
// Declare and initialize variables.
int bytesSent;
int bytesRecv = SOCKET_ERROR;
char sendbuf[32] = "Client: Sending data.";
char recvbuf[32] = "";


void Accept() {

  //----------------------
  // Initialize Winsock.
  WSADATA wsaData;
  int iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
  if (iResult != NO_ERROR)
    printf("Error at WSAStartup()\n");

  //----------------------
  // Create a SOCKET for listening for
  // incoming connection requests.
 
  ListenSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (ListenSocket == INVALID_SOCKET) {
    printf("Error at socket(): %ld\n", WSAGetLastError());
    WSACleanup();
    return;
  }

  //----------------------
  // The sockaddr_in structure specifies the address family,
  // IP address, and port for the socket that is being bound.
 
  service.sin_family = AF_INET;
  service.sin_addr.s_addr = inet_addr("127.18.2.15");
  service.sin_port = htons(27015);

  if (bind( ListenSocket,
    (SOCKADDR*) &service,
    sizeof(service)) == SOCKET_ERROR) {
    printf("bind() failed.\n");
    closesocket(ListenSocket);
    return;
  }

  //----------------------
  // Listen for incoming connection requests.
  // on the created socket
  if (listen( ListenSocket, 1 ) == SOCKET_ERROR)
    printf("Error listening on socket.\n");

  //----------------------
  // Create a SOCKET for accepting incoming requests.
 
  printf("Waiting for client to connect...\n");

  //----------------------
  // Accept the connection.
  while(1) {
    AcceptSocket = SOCKET_ERROR;
    while( AcceptSocket == SOCKET_ERROR ) {
      AcceptSocket = accept( ListenSocket, NULL, NULL );
    }
    printf("Client connected.\n");
    ListenSocket = AcceptSocket;
    break;
  }

  WSACleanup();
  return;
}


void SendReceive() {
 
  //----------------------
  // Initialize Winsock
  WSADATA wsaData;
  int iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
  if (iResult != NO_ERROR)
    printf("Error at WSAStartup()\n");

  while( bytesRecv == SOCKET_ERROR ) {
    bytesRecv = recv( ConnectSocket, recvbuf, 32, 0 );
    if ( bytesRecv == 0 || bytesRecv == WSAECONNRESET ) {
      printf( "Connection Closed.\n");
      break;
    }
   
        if (bytesRecv == -1)
        {
                printf( "Bytes Recv: %ld\n", bytesRecv );
                printf("Error at socket(): %ld\n", WSAGetLastError());
        }
  }

  WSACleanup();
  return;
}


void main ()
{
        Accept();
        SendReceive();
}

---

Second file:

Code:

---

#include <stdio.h>
#include "winsock2.h"

SOCKET ListenSocket;
SOCKADDR_IN service;
SOCKET AcceptSocket;

SOCKET ConnectSocket;
SOCKADDR_IN clientService;


//----------------------
// Declare and initialize variables.
int bytesSent;
int bytesRecv = SOCKET_ERROR;
char sendbuf[32] = "Client: Sending data.";
char recvbuf[32] = "";


void SendReceive() {
  //----------------------
  // Initialize Winsock
  WSADATA wsaData;
  int iResult = WSAStartup(MAKEWORD(2,2), &wsaData);
  if (iResult != NO_ERROR)
    printf("Error at WSAStartup()\n");

  //----------------------
  // Create a SOCKET for connecting to server
 
  ConnectSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if (ConnectSocket == INVALID_SOCKET) {
    printf("Error at socket(): %ld\n", WSAGetLastError());
    WSACleanup();
    return;
  }

  //----------------------
  // The sockaddr_in structure specifies the address family,
  // IP address, and port of the server to be connected to.
  clientService.sin_family = AF_INET;
  clientService.sin_addr.s_addr = inet_addr( "127.18.2.15" );
  clientService.sin_port = htons( 27015 );

  //----------------------
  // Connect to server.
  if ( connect( ConnectSocket, (SOCKADDR*) &clientService, sizeof(clientService) ) == SOCKET_ERROR) {
    printf( "Failed to connect.\n" );
    WSACleanup();
    return;
  }
 

  //----------------------
  // Send and receive data.

        bytesSent = send( ConnectSocket, sendbuf, strlen(sendbuf), 0 );
        printf( "Bytes Sent: %ld\n", bytesSent );
 

  WSACleanup();
  return;
}


void main ()
{
        SendReceive();       
}

---

Thanx a lot!