// winsock2TestClient.cpp : メイン プロジェクト ファイルです。

#include "stdafx.h"
#include "winsock2.h"
#include <comdef.h>
#include <iostream>
using namespace std;

using namespace System;

#pragma comment( lib, "ws2_32.lib" )

int main(array<System::String ^> ^args)
{
    wchar_t port_number[10];
    DWORD val =
    GetPrivateProfileString( L"TCPIP"
                           , L"Port_Number"
                           , L"NULL"
                           , &port_number[0]
                           , sizeof( port_number )
                           , L"./winsock2TestClient.ini"
                           );
    wprintf( L"%s\n", port_number );

    wchar_t server_ip_address[20];
    GetPrivateProfileString( L"TCPIP"
                           , L"Server_IP_Address"
                           , L"NULL"
                           , &server_ip_address[0]
                           , sizeof( server_ip_address )
                           , L"./winsock2TestClient.ini"
                           );
    wprintf( L"%s\n", server_ip_address );

    WSADATA wsaData;
    int     ret;
    SOCKET  sock;
    char    buf[32];

    struct sockaddr_in server;

    ret = WSAStartup( MAKEWORD( 2, 0 ), &wsaData );
    if ( ret != 0 )
    {
        switch( ret )
        {
        case WSASYSNOTREADY:
            printf( "WSASYSNOTREADY\n" );
            break;
        case WSAVERNOTSUPPORTED:
            printf( "WSAVERNOTSUPPORTED\n" );
            break;
        case WSAEINPROGRESS:
            printf( "WSAEINPROGRESS\n" );
            break;
        case WSAEPROCLIM:
            printf( "WSAEPROCLIM\n" );
            break;
        case WSAEFAULT:
            printf( "WSAEFAULT\n" );
            break;
        default:
            break;
        }
        exit( -1 );
    }
    printf( "WSAStartup successful.\n" );

    sock = socket( AF_INET, SOCK_STREAM, 0 );
    if ( sock == INVALID_SOCKET )
    {
        printf( "error : %d\n", WSAGetLastError() );
        exit( -2 );
    }
    printf( "socket successful.\n" );

    // 接続先指定用構造体の準備
    server.sin_family = AF_INET;
    server.sin_port = htons( _wtoi( port_number ) );
    server.sin_addr.S_un.S_addr
    = inet_addr( ( const char* )_bstr_t( server_ip_address ) );

    // サーバに接続
    int st = connect( sock
                    , ( struct sockaddr* )&server
                    , sizeof( server )
                    );
    if ( st == SOCKET_ERROR )
    {
        printf( "st=%d last=%d\n", st, WSAGetLastError() );
        perror( "connect error!!" );
        exit( -21 );
    }

    // サーバからデータを受信
    memset( buf, 0, sizeof( buf ) );
    int n = recv( sock, buf, sizeof( buf ), 0 );
    if ( n == SOCKET_ERROR )
    {
        switch( WSAGetLastError() )
        {
        case WSAENOTCONN:
            printf( "ソケットが接続されていません。\n" );
            exit( -10 );
        default:
            printf( "error : %d\n", WSAGetLastError() );
            exit( -11 );
        }
    }
    printf( "%d, %s\n", n, buf );

    // winsock2の終了処理
    WSACleanup();
    printf( "WSACleanup successful.\n" );

    return 0;
}